Харчова наука і технологія (Food science and technology)

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A RESOURCE-SAVING AND ENERGY-EFFICIENT TECHNOLOGY OF FERMENTATION OF WORT FROM STARCH-CONTAINING RAW MATERIALS FOR BIOTHETANOL PRODUCTION
(2022) S. Kovalchuk, T. Mudrak
In the context of market economy, an urgent task of the alcohol industry is reducing the cost of commercial products by creating and introducing innovative energy-efficient and resource-saving technologies. In this aspect, a task of current importance is developing a technology that involves using new high-yielding races of distiller’s yeast to ferment highly concentrated wort obtained from grain raw materials. The wort used for fermentation was from different types of grain raw materials: maize, rye, wheat. The studies have shown that an increase in the concentration of dry matter of maize wort (up to 30%) makes it possible to obtain wash with the alcohol concentration 15.65% vol., an increase in the dry mater concentration of wheat wort (up to 27%) – 14.10% vol., in that of rye wort (up to 24%) – 13.00% vol. ethanol. With the standard yield of alcohol from 1 tonne of standard starch, the maximum alcohol content in the maize wash was 14.91% vol., while in the wheat wash, it was 14.1% vol., and in the rye wash, 13.0% vol. It has been studied how the temperature of fermentation of high-concentration wort affects the chemical and technological parameters of fermented maize wash. It has been established that the stage-by-stage fermentation of maize grain wort (at 35 and 30°С) creates conditions for additional saccharification of dextrins in the wort and for its effective end-fermentation. Therefore, this technique is especially effective in the fermentation of high-concentration wort. The introduction of the technology developed will allow efficiently processing agricultural raw materials into alcohol and reducing production waste (post-alcohol stillage). To validate the results of the theoretical and laboratory studies, the technology of highly concentrated alcohol wash from grain raw materials has been tested in the conditions of alcohol production at the company TOV FAZOR in Kozhanka, Fastiv District, Kyiv Region (capacity 6000 dal of alcohol-containing liquids a day). For the manufacturing tests, technological guidelines were developed and approved according to the due procedure.
ADJUSTING FLOUR QUALITY BY ENZYMES: CURRENT STATE, PROBLEM ANALYSIS, FUTURE DEVELOPMENT PROSPECTS
(2019) D. Zhygunov, D. Marchenkov, T. Lebedenko
The article overviews the issue of wheat flour modification by enzymes. The role of enzymes in the dough formation process is considered. Modern ways of providing the desired dough parameters for flour products in conditions of Ukraine are shown. Recommendations and suggested directions for further research are given. Flour is a complex multicomponent product and have to correspond with a number of requirements for its composition and properties. Different conditions of grain cultivation and storage result in significant deviations of its quality indicators when it comes to flour mills. The modification of flour going through adding several technological additives, in particular by enzyme products. The action of enzymes to a large extent allows to adjust the properties of the dough and of flour end-products. In addition, enzymes further affect the nutritional values of flour, which makes it possible for the flour production to use low-quality grain, while maintaining the planned quality indicators of flour. The functional properties of flour fractions obtained on different technological passages depend on the content of various anatomical parts of the grain from which they derived from. Particle size, starch damage, protein content, fat content, ash content and intensity of enzyme activity vary significantly depending on the type of grinding equipment. All this gives reason for recommending the introduction of enzymes not while manufacturing bakery end-products but still at the stage of flour production. The damage to the grain with a corn bug, grain germination in Ukraine puts grain-processing plants the task of assessing the activity of own grain enzyme systems. Indirectly, this can be estimated using the gluten deformation index and the grain Falling Number. But the estimation of enzyme systems by such methods does not allow precisely to calculate the amount and composition of enzyme products necessary to achieve maximum effect when adjusting flour properties. The issue of removing anti-nutrient factors in flour, which is largely inhibitors of the action of both their own grain enzyme systems and additionally introduced enzyme preparations, is also relevant.
AN INNOVATIVE TECHNOLOGY OF WAFFLES WITH FUNCTIONAL PROPERTIES
(2020) Е. Iorgacheva, G. Korkach, T. Lebedenko, O. Kotuzaki
The high-priority tasks of today’s confectionery industry include the development and introduction of functional-purpose confections. These products are supposed to be of high technological qualities, be effective in production to the extent possible, and have physiological functional properties due to the physiologically valuable ingredients in their composition. These ingredients include the synbiotic complex composed of probiotics (bifidobacteria, lactobacilli) and prebiotics (inulin and lactulose). This complex has been studied in this research. The paper gives reasons why waffles with fatty fillings are the ones to which the synbiotic complex should be added. It has been established what mass fraction of the ingredients at what stage of fatty filling production should be added. It has been studied how the synbiotic complex affects the structural and mechanical properties of the fatty filling: its effective viscosity, adhesive strength, and critical shear stress. It has been found that the maximum shear rate that still allows obtaining a high-quality filling is 5.4 s-1. The specific pull-off force of the fatty filling with the synbiotic added becomes lower compared to that of the control sample. This helps reduce the energy consumed in the course of moulding waffles. An innovative manufacturing technology for waffles with synbiotic supplements has been developed and proved practical. It includes the stages of preparing microencapsulated microorganisms and adding prebiotics, and provides the technological parameters of fatty filling preparation. It has been established that the synbiotic included into the composition of the new fatty filling decreases the maturation of waffle blocks by 40–45%, and allows reducing the layer of filling to 1–1.5 mm. It has been proven that the synbiotic complex as an ingredient in the fatty filling of waffles will allow developing and manufacturing confections that improve human microflora. These new specialised products will be socially significant, as they will help solve a topical and important task of the confectionery industry: prevent gastrointestinal diseases.
ANALYSIS OF A NEW DIAFILTRATION METHOD OF CLEANING BUTTERMILK FROM LACTOSE WITH MINERAL COMPOSITION PRESERVED
(2018) S. Bondar, O. Chabanova, T. Sharakhmatova, A. Trubnikova
Removing lactose from buttermilk and other dairy products is a topical problem, as there is a significant increase in morbidity rates due to lactose intolerance. In many cases, milk and dairy products containing lactose can not be completely excluded from the diet. These products have a number of valuable components. There are several ways to remove lactose from milk or other dairy products. They are based on separation methods of processing and on the use of enzymes. Among the separation methods, membrane treatment, including diafiltration, is of particular importance. A technique of engineering calculation of cleaning an ultrafiltration buttermilk concentrate is suggested. As a solvent that reduces the concentration of lactose, a nanofiltrate permeate of buttermilk ultrafiltration is used. This method allows preserving the chemical composition of the concentrate with lactose effectively removed. Basing on the experimental data of membrane productivity and their selectivity for lactose, the main characteristics of diafiltration are calculated for various practical applications. For practical purposes, it is advisable to use a buttermilk permeate nanofiltrate using highly selective lactose membranes. Selectivity for salts should be minimal. When comparing the different diafiltration variants, the most suitable is a periodic method, with continuous dilution, and a continuous method with a crossflow and reverse flow of the nanofiltrate. The smallest аmount of a nanofiltrate is observed in the case of a continuous countercurrent. The time for diafiltration treatment depends on the membrane’s specific parameters, process operating parameters, and the selected lactose purification variant. The most cost-effective is the continuous variant with a countercurrent nanofiltrate. However, it can not be recommended because of the considerable duration of the process. The suggested technique for calculating diafiltration allows quick evaluation of possible options of purifying the product from lactose, and concludes which one is optimal.
Analysis of alternative methods and price politic of icewine production
(2017) V. Ostapenko, O. Tkachenko, E. Iukuridze
The artificial methods of must concentration were discussed in current study: the microwave vacuum dehydration, reverse osmosis and cryoextraction. The main factor of using of alternative ways is deficiently low temperatures in winter period that are necessary for freezing grapes on vine according to the classical technology. The benefits and disadvantages of using of non-classic processes to obtain sweet musts were shown. The physical, chemical and sensory characteristics of wine made from grapes previously frozen by alternative and natural ways were analyzed. Indicators influencing on price of icewines and dessert wines bottle including agricultural climatic, technological and marketing factors were determined. Detailed indicators highlight specificity of used technology and represent consumer preferences. Producers of winemaking regions of Argentina, New Zealand, Israel, Ukraine and Australia adhere to provisions that are inconsistent with the standards of Canada and the European countries regarding the icewine output. These instruments determine the processing of grapes and parameters reflect on parameters of the finished product.
ANALYSIS OF THE EXISTING METHODS AND SPECIFIC FEATURES OF DRYING SHIITAKE MUSHROOMS
(2021) L. Avdieieva, E Zhukotskyi, H. Dekusha, S. Ivanov
The paper reviews and analyses the advantages and disadvantages of the existing technologies of drying shiitake mushrooms, which are a valuable source of bioactive polysaccharides, vitamins, antioxidants, etc. The findings presented in the paper show how various drying methods and their thermotechnological operating parameters affect the mechanostructural properties, chemical composition, content of aromatic substances and other compounds of mushrooms. It has been demonstrated that the traditional convection drying of shiitake in the temperature range 50–60°C allows maximum preservation of phenolic compounds, organic acids, nucleotides, sulphuric aromatic substances, and enhances the unique aroma of the mushroom. Radiation drying has such advantages as lower shrinkage of dried shiitake mushrooms, a higher coefficient of rehydration and higher hardness, and the drying time reduced by 66% compared with freeze-drying. Vacuum drying makes it possible to obtain high quality products, but significantly increases the duration of the process and reduces the content of aromatics. Radiation drying combined with hot air allows obtaining a dry form of shiitake rich in protein and bioactive polysaccharides and having high physicochemical properties, and reduces the duration of the process by 37.5% compared with convection drying. Spray drying of shiitake mushrooms is highly practical economically and allows organising industrial manufacture of high-quality dry mushroom powder in large volumes. It is characteristic of this drying method that its temperature effect on the product is slight, which makes it possible to preserve thermolabile bioactive substances. When using spray drying, it is advisable to add dextrin additives. This improves the structuring and moisture-conducting properties of the suspensions and their thermal stability, and helps preserve the unique aroma of shiitake mushrooms due to encapsulation of aromatic compounds. Studying the effect of various drying methods on the physicochemical properties of shiitake will lead to improving the existing technological processes and will make it possible to obtain products with desired properties.
ANTIBACTERIAL AND ANTIFUNGAL EFFECT OF ACHILLEA MILLEFOLIUM ESSENTIAL OIL DURING SHELF LIFE OF MAYONNAISE
(2019) Asiye Ahmadi-Dastgerdi
The importance of food-borne disease and consumer demands for avoiding synthetic food preservatives shifted the research interest to natural food preservatives such as essential oils which have antimicrobial activity. Also, spoilage of foods by fungi is a major problem, especially in developing countries. The aim of this study was to evaluate the efficiency of Achillea millefolium essential oil as natural food preservative in high fat and low fat mayonnaise kept at 4°C for 6 months. Mayonnaise samples were divided into four experimental treatments, namely: EO (essential oil in concentrations of 0.45-7.2 mg/ml), BS (sodium benzoate and potassium sorbate in concentration of 0.75 mg/ml), Cmo (control: no preservative with added microorganisms) and C (control: no preservative and no added microorganisms). The results showed that of essential oil of Achillea millefolium had influence against all of the tested microorganisms in mayonnaise and all of the pathogens and fungi did not grow in mayonnaise, whereas in the control samples all of the microorganisms grew. The maximum cell counts of bacteria and fungus in low fat mayonnaise were approximately lower than the high fat mayonnaise or resistance to inactivation of microorganisms appeared to be greater in high fat mayonnaise than in low fat mayonnaise (p< 0.05). Also, BS samples exhibited antimicrobial properties against tested species during storage. In conclusion the essential oil of Achillea millefolium would lead to control food pathogenic organisms and food spoilage organisms and therefore, it can be used as natural preservative in food industry such as mayonnaise.
ANTIMICROBIAL BIODEGRADABLE PACKAGING FOR SLICED BAKERY
(2021) О. Shulga, A. Chorna, S Shulga
In the modern minds of the advanced ecology and safety of food products control, it is relevant the development of antimicrobial biodegradable packaging. The article presents the results of the antagonistic action of nanodispersed titanium dioxide powder (TiO2) at the warehouse of biodegradable packaging for bakery products on the living of microorganisms (Escherichia сoli, Bacillus subtilis, Candida albicans, Aspergillus niger). It is known there are developments on the use of antimicrobial substances of both organic and inorganic origin, the microbiological action of the substances used have an effect on pathogenic, opportunistic, fungi, gram-negative and gram-positive bacteria. We found that the introduction of 1% TiO2 r into the molding solution allows to give the package antibacterial properties, as it inhibits the development of Escherichia coli and Bacillus subtilis, as there is a delay in the growth of their colonies compared to the sample without packaging with TiO2. According to the results of provocative testing, biodegradable packaging with a content of 1% TiO2 has an inhibitory effect on Bacillus subtilis. In addition to antimicrobial properties, the package under study must also have barrier properties, so the vapor permeability of the presented package was determined. The study results show that the addition of 1% TiO2 slightly reduces the vapor permeability, but the increase in the concentration 2–5% of TiO2 causes an increase in vapor permeability from 4.7 to 5.2 mg / (m∙h∙kPa). The vapor permeability of the presented biodegradable antimicrobial packaging is due to the presence of pores, the number and size of which were determined experimentally. Thus, nanodispersed TiO2 in the amount of 1% in the molding solution of the biodegradable coating is an effective antimicrobial component for antimicrobial coatings, which does not impair their barrier properties.
APPLICATION OF THE IMPEDANCE METHOD FOR DETERMINATION OF MONOSODIUM GLUTAMATE IN FOOD PRODUCTS
(2020) Yu. Slyva, E. Pokhodylo
The article presents the results of studying how impedance analysis can be used for determination of monosodium glutamate in order to identify food fraud. We have suggested that the parameters of complex conductivity (admittance) of a two-terminal circuit could allow detecting monosodium glutamate (E 621), an additive used in the food industry to enrich the taste. The method involves passing current of different frequencies through solid foodstuffs and a cell with liquid foodstuffs, measuring the electrical conductivity, and determining and analysing the frequency dependence of admittance. The active G component and the reactive B component of the admittance have been measured at different frequencies, from 100 Hz to 100 kHz. For the experiment, food samples were prepared in accordance with the Codex Alimentarius recommendations for the dosage of the food additive E 621: orange juice with monosodium glutamate added in the amount of 0.3%, and mashed potatoes with glutamate added in the amount of 1%, of the total weight of the products. The temperature of the tested products was 22 ± 0.2°С. The results of the studies have shown the dependences of the admittance components on the frequency for the control samples of juice and mashed potatoes and for the samples with monosodium glutamate added. The dependence of the active component and the reactive component of the foodstuff admittance have been established, with monosodium glutamate (added in the above-specified proportion) and without it. The difference is in how the dependences change in their nature. The monosodium glutamate curves both in juice and in mashed potatoes are similar. The samples containing monosodium glutamate have far higher values of the active and reactive admittance component than the control samples do, with a distinct peak of the reactive component characteristic. Therefore, impedance analysis is a possible method to detect quickly the flavour enhancer monosodium glutamate in foods of different consistency and thus identify food fraud.
ASCORBIC ACID AND PHENOLIC SUBSTANCES IN THE UNFORTIFIED WILD STRAWBERRY WINE MATERIALS
(2020) A. Tokar, L. Matenchuk, S. Myroniuk, M. Shcherbak, V. Khareba
The content of ascorbic acid and phenolic substances in natural juices and unfortified wine materials from garden strawberries of Polka and Pegas varieties was investigated. The content of ascorbic acid was 271-417 mg/dm3 and of phenolic substances – 1280-1500 mg/dm3. The content of these ingredients depends on the variety characteristics (dominant influence) and the weather conditions of the growing season. 230 g of white sugar was added to one dm3 of strawberry juice for the production of unfortified wine materials intended for sweet wines. The wort was pasteurized at 85°C for 5 minutes, cooled and fermented using active dry yeast: the race EC 1118 (France), ENSIS LE-C1, ENSIS LE-1, ENSIS LE-5, ENSIS LE-6 (Spain) in accordance with the manufacturer's recommendations. It has been found that the content of ascorbic acid and phenolic substances decreases during wort preparation and fermentation. The average loss of ascorbic acid during wort preparation is 17.4% and of phenolic substances – from 1.1 to 4.9%. The reduction in the content of these components due to the dilution of sugar during wort preparation is 14-15%. The duration of fermentation of strawberry worts with an initial mass concentration of invert sugars 274 g/ dm3 is 70-77 days. The output of cleared wine material after fermentation depends on the variety characteristics, the year conditions and the yeast race used, and ranges from 86.9 to 92.7%. Loss of ascorbic acid during wort fermentation averages 49.3%, phenolic substances 21.6%. Ascorbic acid content of 86-158 mg/dm3 and phenolic substances of 720–1080 mg/dm3 were found in unfortified strawberry wines. In particular, according to the average data of two years, the content of phenolic substances in the wine materials from strawberries of the Polka variety were 197 mg/dm3 higher than their content in the wine materials from the berries of the Pegas variety. The content of ascorbic acid in wine materials in relation to the content in the juices corresponding to fresh berries is 25.4-41.3%, on average – 33.6%; of phenolic substances – 56.2-72.0%, on average 62.6%. In order to better preserve the ascorbic acid, the ENSISLE-C1 yeast race (Spain) and the phenolic substances EC-1118 (France) should be used. The results of studies confirm that unfortified sweet wines from wild strawberries can be attributed to the products with health-promoting properties.
ASSESSMENT OF THE QUALITY OF MODERN COMMERCIAL PORK PRODUCTS
(2020) K. Garmatyk, R. Susol, M. Broshkov, O. Danchuk, Ih. Panikar, L. Susol
By a morphological study of carcasses of young pig stock of different origin, it has been proved that up-to-date crossbreeding schemes using meat-type breeds as parents increase the percentage of meat in a carcass and optimise the lean-to-fat ratio. Physicochemical analysis of pork obtained from pigs of different breeds has shown that all the parameters investigated are within the current physiological standards. Most parameters have shown no significant difference, though tend to exhibit some peculiarities associated with the effect of a genotype on how this or that physicochemical characteristic manifests itself. The use of the Piétrain breed as the sire line decreases the intramuscular fat content, and hence the calorific value of pork. The back fat of this breed has the highest melting point, which indicates its high storability, but somewhat lower cooking properties than those of similar products obtained from offspring of Large White and Landrace parents. The pH and water-holding capacity of the pork of Piétrain-sired offspring make it quite similar to PSE (Pale, Soft, Exudative) meat: this pork is slightly less tender and paler in colour and exhibits greater weight loss during thermal processing. Also, the result of a comprehensive sensory evaluation of boiled pork and pork broth obtained from Piétrain-sired young stock was the lowest, which is consistent with most of the physicochemical properties of pork from pigs of this genotype. So, it is the 75% purebred Landrace that should be favoured as a terminal sire line in crossbreeding programmes in order to obtain pork and bacon of improved quality in intensive commercial swine production systems. It is recommended to combine Piétrain and Duroc lines to produce terminal sires, ½ (Piétrain + Duroc), that will be further mated with two-breed-cross dams – ½ (Large White + Landrace).
ATP MONITORING AS AN EXPRESS METHOD TO DETERMINE OBJECT CONTAMINATION
(2019) T. Volovyk, A. Yegorova, O. Kylymenchuk, M. Okhotska, A. Kyshenia, V. Khareba
The article presents the results of indication of water and surface contamination. The researches were aimed at estimation of water safety and sanitary-hygienic condition of surfaces. To study the contamination of water samples and common surfaces, we used the traditional method and the bioluminescence-based express method. The bioluminescence method is based on determining the total amount of ATP (bacterial, somatic and extracellular) on contact surfaces and in water. The level of ATP (adenosine triphosphate) was determined using the Lumitester PD-30 (Kikkoman, Japan) luminometer device according to the manufacturer's instructions, using special test systems. The ATP bioluminescence method is commercially more available for simple and quick monitoring of the sanitary-hygienic control effectiveness according to the HACCP principles or international requirements. The traditional method of determining water (and other material) contamination was performed by inoculating water or surface wiping on a common nutrient medium and further cultivation under appropriate conditions. The strongest glowing reaction was observed in sea water, which can be explained by the presence of organic substances in it, while the bioluminescence values in potable (bottled) and filtered water tests were most close to control test. The results of testing the sanitary-hygienic condition of surfaces showed that the amount of adenosine triphosphate exceeded the limits in almost all tested objects. However, a slight exceeding of adenosine triphosphate level was observed on the internal surface of new (plastic) food containers. The investigations performed show that the bioluminescence-based express method can be used as a primary control that gives immediate information about the contamination of both surfaces and liquids. Using the bioluminescence method can shorten the time of the study and therefore reduce the cost of the test. However, when determination of qualitative and quantitative composition of the tested object’s microbiota is necessary, then the classical microbiological control must be performed.
Bacillus cereus: характеристика, біологічна дія, особливості визначення в харчових продуктах
(2017) І. В. Пилипенко, Л.М. Пилипенко, О.С. Ільєва, Г.В. Ямборко
Наведено характеристику, основні властивості, біологічну дію Bacillus cereus і перелік деяких харчових продуктів, які найчастіше можуть бути контаміновані цими мікроорганізмами. Охарактеризовано класичні та сучасні методи визначення Bacillus cereus. Наведено результати розробленого пріоритетного методу підготовки зразків харчової сировини і продуктів її переробки, що дозволяє визначити мікробіологічні забруднення без тривалого накопичення культур мікроорганізмів. Представлено результати прискореної індикації Bacillus cereus в харчовій рослинній сировині та продуктах її переробки. Методом полімеразної ланцюгової реакції (ПЛР) підтверджено групо- та видоспецифічність методу визначення Bacillus cereus.
BAKING PROPERTIES OF DIFFERENT AMARANTH FLOURS AS WHEAT BREAD INGREDIENTS
(2021) S. Mykolenko, D. Zhygunov, T. Rudenko
The technological properties of full-fat amaranth flour depend on the varietal characteristics of the Ukrainian amaranth grain and differ significantly from amaranth flour from flakes and amaranth flour from groats. In comparison with patent wheat flour, amaranth flour has a lower moisture content, higher water absorption capacity and autolytic activity. The variety of Amaranthus hypochondriacus significantly effects on the whiteness of full-fat flours, the lightest of which is obtained from the grain cultivar Kharkivsky-1. A higher fat, protein, and fibre content makes amaranth flours more acidic. The water absorption capacity of the flours shows positive correlation with their autolytic activity (+0.885). The acidity negatively correlates with the moisture (-0.939) and whiteness (-0.814) of the flours. Using amaranth flour of the different types to replace 5, 15, and 25% of patent wheat flour when making bread increases its specific volume and crumb porosity and decreases its shape stability. The positive correlation of the overall quality of the bread samples under study with their specific volume (+0.540) and the negative correlation with the acidity (- 0.685) are statistically significant. The shape stability negatively correlates with the porosity (-0.598), and the latter positively correlates with the specific volume (+0.533). The use of full-fat amaranth flour increases the specific volume and porosity of bread by 1.1–1.3 and 1.1 times respectively. The use of defatted flour from flakes leads to a 1.3–1.9 -fold increase in the specific volume and to a 1.1–1.2 -old increase in the porosity. Incorporation of amaranth flour from groats allows increasing the specific volume and porosity of bread by 1.3–1.5 and 1.1–1.2 times respectively. The bread samples with 25% of all amaranth flours considered and with 15% of full-fat flour of the Liera variety have the lowest consumer characteristics. It has been proved that using 5–15% of full-fat flour from the amaranth grain of variety Kharkivsky-1 and defatted flour from flakes and groats (by-products of processing amaranth grain into oil) improves the quality and nutritional value of bread.
BASIC INGREDIENTS AND THEIR ANALYSIS DURING THE FORMATION OF BEER QUALITY
(2018) N. Penkina, L. Tatar, А. Оdаrchеnco, V. Demchenko
The analysis and comparative description are carried out of varieties of brewing barley light malt and type 90 hops from domestic and foreign producers, as the main plant raw material that forms the quality of beer. The quality indexes of malt samples and hop pellets have been tested for compliance with applicable standards.The obtained results indicate that the varieties of barley malt are homogeneous grain mass, do not contain moldy and damaged grains, weed impurities, have a color from light yellow to gray to yellow. Ten samples of malt of various grades for beer production have been studied in terms of mass fraction of moisture (3.2–3.7%), mass fraction of extract in dry matter of fine malt (82.4–87.5%), degree (0 9–1.2%), the mass fraction of protein substances in dry matter of malt (9.1–10.1%), the Kolbach index (39.1–40.2%), the amount of nitrogenous substances (0.70–0, 74%). It has been established that the quantitative content of β-glucans significantly differs in different varieties: the minimum amount is contained in the malt Château Wien, the maximum is Pilsner Weyermann and Munich.According to the research results, it has been established that barley malt varieties have a pronounced malt aroma and sufficient fermentative activity and can serve as the base in the mash in the production of beer. It is proved that malt samples have an acceptable amount of toxic substances and radionuclides that will not affect the quality of the finished product. In assessing the quality of varieties of hop pellets by organoleptic indicators, the mass fraction of moisture and α-acids, it is established that the samples have the values of the indicators within the permissible limits. The samples have a cylindrical shape of different hues and approximately the same size; pure hop aroma, without an off-aroma; the color on the surface and at the boundary of the pellets meets the requirements of the standard. The mass fraction of α-acids is in the range from 3.0 to 12.7 %. It is revealed that bitter and aromatic hops are used for pellet production. The samples Magnym and Hallertau Perle are classified as bitter varieties. Hop pellets of the varieties Premiant and Sladek are bitter and aromatic.According to the results of the determination of quality indicators, the following ones have been identified as the best: malt – Munich, Pilsner, Carabohemian, hop pellets – Bramling Cross, Mandarina Bavaria and Magnym. The proposed varieties of malt and hops allow obtaining beer with high organoleptic characteristics, colloidal stability and expand the range of the industry by creating new varieties to meet the needs of the consumer.
BIOACTIVATED BUCKWHEAT IN TERMS OF ITS NUTRITIONAL VALUEBIOACTIVATED BUCKWHEAT IN TERMS OF ITS NUTRITIONAL VALUE
(2021) M. Zenkova
Buckwheat is a gluten-free pseudocereal crop consumed as functional food in some regions. Traditionally, buckwheat grain is used to make buckwheat groats and flour. Bioactivation improves the nutritional value of buckwheat grain by activating hydrolytic enzymes that make nutrients available for the plant’s growth and for the human body. The article contains research on the content of nutrients in bioactivated buckwheat grain of the Kupava variety grown in Belarus. The study examined hulled buckwheat kernels (not steamed) of the botanical variety Kupava, cream-coloured with a greenish hue, with the humidity 12.0%, and with the proportion of sound kernels 99.4%. At the first stage of germination, bioactivated buckwheat grain was obtained in 48 hours. It had the following characteristics: humidity (39.2±1.0)%, sprout size (2.0±0.5) mm. According to the organoleptic parameters, the grain had a pleasant sweetish taste and a subtle nutty aftertaste. The components of bioactivated buckwheat grain that provide a person with the largest amounts of macronutrients are starch (31.84±0.6)%, sugars (5.1±0.3)%, and protein (5.67±0.02)%. Bioactivated buckwheat grain contains all essential amino acids (30.5% of the total quantity of amino acids). The limiting amino acid is threonine (amino acid score 31.7%). Of nonessential amino acids, there is a high content of glutamic acid (1.0972 g per 100 g). The difference ratio of the amino acid score is 54.75%, the potential biological value of the protein is 45.25%. 100 g of sprouted buckwheat grain contains 48.5% of the daily requirement of manganese, 24.0% of copper, 18.9% and 34.0% of iron (for women and for men respectively), about 23.0% of the daily requirement of vitamin B1, and 12.7% of the daily requirement of vitamin E. Besides, bioactivated buckwheat grain contains fibre (6.5% of the daily requirement on average). Bioactivated buckwheat grain can be consumed as a meal in its own right, as a side dish, as an additive to salads and fermented dairy products, or as a dessert when mixed with fruit purée, honey, or dried fruit.
BIOCHEMICAL COMPOSITION OF MILLET GRAIN AND ITS CHANGES DURING STORAGE
(2022) О. Gorlachova, S. Gorbachova, L. Kobyzeva, О. Suprun, N. Ilchenko, T. Sheliakina
The total fat content, the fatty acid composition of oil (11 fatty acids), and the total carotenoid content in grain of 8 millet varieties harvested in 2020–2021 have been investigated. The mean value of the total fat content in millet grain was 4.4±0.12%, and the varieties did not differ significantly in this parameter. The total carotenoid content averaged 6.7±0.94 mg/kg. The oil from modern millet varieties was notable for high contents of linoleic (62.4±1.32%) and oleic acids (25.1±1.67%), indicating their high nutritional value. The fatty acids in the millet grain were ranked in order of descending contents as follows: С18:2 > С18:1 > С16:0 > С18:0 > С18:2 > С24:0 > С20:0 > С16:1 > С22:0 > С20:1 > С14:1. A high content of linoleic acid in grain was recorded in the varieties Omriyane (63.6±0.07%), Sozh (62.7±0.34%), Yulin 1 (62.4±0.03%), Bila Altanka (62.8±0.04%), Kharkivske 57 (63.2±0.45%), and Zhodynske (63.3±0.31%). The varieties Sozh and Yulin 1 had an above-average content of oleic acid (26.1±0.19% and 26.0±0.01% respectively). The highest oleic acid content was observed in the variety Bohatyrske (28.5±0.15%). These data prove that high levels of linoleic and oleic acids can be combined in one genotype. The carotenoid content in the varieties Slobozhanske, Omriyane, Bila Altanka, and Yulin 1 was significantly higher than the mean value (by 0.6, 0.7, 1.1, and 0.5 mg/kg respectively). Correlation analysis has allowed determining genetic relationships between the total oils, carotenoids, and fatty acids of grain, and has shown weak to very weak correlations between their total contents. However, the oleic acid content was moderately and negatively correlated with the carotenoid content (r=-0.550) as well as with linoleic (r=-0.717), stearic (r=-0.574), eicosanoic (r=-0.590), and lignoceric (r=-0.533) acid contents. This means that breeding of high-quality millet cultivars is complicated. During long-term storage (5 years) of Kharkivske 57 grain, the total oil content decreased by 0.25%, but this change was not statistically significant. After the five-year storage, the carotenoid content decreased by 4.74 mg/kg. The acid value of oil in 2020 was 5.10 mg KOH/100 g of substance. After the five-year storage, it increased to 9.53 mg KOH/100 g of substance. No significant changes were observed in the quantity or quality of fatty acids in Kharkivske 57 oil. Nevertheless, the storage of millet grain was accompanied by a slight increase in palmitic, stearic, linoleic, linolenic, eicosanoic, eicosenoic, behenic, and lignoceric acids.
BIOLOGICAL VALUE AND CONSUMER PROPERTIES OF FISH PASTES
(2021) A. Menchynska, T. Manoli, L. Tyshchenko, O. Pylypchuk, A. Ivanyuta, N. Holembovska, M. Nikolaenko
The paper presents a study of the quality parameters of fish pastes and confirms their value as food products with optimised nutritional and biological characteristics. Sensory evaluation of fish pastes has shown that the samples developed have higher consumer properties compared with the control sample. The results of the profile analysis by the flavour method show that the paste Ikrynka is the closest to the ideal taste profile. The findings on the chemical composition characterise fish pastes as products with high nutritional value due to the significant content of proteins and lipids. The paste Ikrynka contains 12.68% of proteins, and the paste Zakusochna 13.43%, which is at the level of the control sample (13.05%). The mass fraction of lipids in the experimental samples exceeds the control: in the paste Ikrynka, the lipid content is 40.06%, in Zakusochna, it is 36.64%, and in the control sample, the proportion of lipids is 11.41%. The results of studying the amino acid composition of proteins show that in the test samples, all essential amino acids are present. They are well-balanced, which indicates their high biological value and makes the pastes easily assimilated by the human body. The study of the fatty acid composition of lipids present in the fish pastes shows that in the samples developed, polyunsaturated fatty acids predominate: their share in the paste Zakusochna is 44.23%, and in Ikrynka, 48.42%. By the ratios of the fatty acids С18:2:С18:1, С18:2:С18:3, and ω6:ω3, both samples of pastes are equivalent to ideal fat, which indicates high biological effectiveness of lipids in fish pastes. It has been found that the pastes Ikrynka and Zakusochna are high in vitamin E (1.83 mg/100 g and 1.64 mg/100 g respectively) due to a significant amount of vegetable oil in their composition. Ikrynka contains quite a lot of carotenoids (3.47 mg/100 g) due to the presence of carrots in its composition. The results of studying the mineral composition show that the samples of pastes developed are a source of zinc
BIOLOGICAL VALUE OF TOMATO PROCESSING BY-PRODUCTS
(2021) O. Benderska, A. Bessarab, B. Iegorov, M. Kashkano, V. Shutyuk
The article analyzes the biological value of secondary products of tomato processing, namely tomato seeds, which, for the most part, is not considered as an object of processing. The use of secondary raw materials formed in the production of tomato products as a source of biologically active substances with their subsequent use in food technology is proposed. The results of theoretical and experimental studies of the biological value of tomato seeds. It has been found that tomato seeds have a high nutritional and biological value due to the high concentration of proteins, lipids, and carbohydrates. Accordingly, this value complies with modern recommendations on healthy diet for the population. Also, tomato seeds are rich in polyunsaturated fatty acids, phospholipids, macro- and micronutrient elements, vitamin E, and fiber. However, its nutritional value is substantially reduced by natural biologically active anti-alimentary substances, namely proteinase inhibitors. A first experimental is antinutrients tomato seeds. А number of trypsin inhibitors of tomato seeds use micronating processing , a significant reduction has been achieved. The use of hydrothermal and micronization treatment of tomato seeds to reduce the activity of trypsin inhibitors is proposed. Hydrothermal treatment for 40 min at a water temperature of 90..100°C reduced trypsin inhibitory activity by 1..3% from baseline. Thus, when you stand micronating processing maturity during 60s reducing trypsin inhibitors is about 34 % and for biological maturity is 28.8%. It was found that technology tomato seeds processing allows to obtain a biologically valuable product, which is mainly represented by lipid up to 40%, as well as significant content of protein substances, carbohydrates and fibre. The purpose of this paper is the study of chemical composition and biological value of secondary tomato resources, namely tomato seeds, as well as researching the possibility of its application in food technology. It is also concerned with determination of quantitative and qualitative composition of anti-nutrients of tomato seeds and selection of ways to decrease the activity of anti-nutrients of tomato seeds.
BIOSORBENTS – PROSPECTIVE MATERIALS FOR HEAVY METAL IONS EXTRACTION FROM WASTEWATER
(2018) О. Kovalenko, V. Novoseltseva, N. Kovalenko
The article deals with ecological safety, resource saving, economic efficienty in the technologies of wastewater purification from heavy metals ions. It is shown that modern technologies of wastewater purification from such substances need to be improved. А promising way to solve this problem is the production and wide use of carbon sorbents obtained from the waste of processing agricultural raw materials and waste generated at food enterprises. Scientific research is actively carried out in this area. This is due to the possibility of organizing the process of wastewater purification from heavy metal ions in a cheap and effective way. The development of biosorbent production is relevant for Ukraine, as the development of agriculture and food industry is of primary importance. The article presents the results of an analytical review of literary sources on various aspects of the scientific problem. In particular, possible sources of raw materials for the production of biosorbents, classical and modified technologies for their production, mechanisms of biosorption using raw materials with different chemical composition, sorption characteristics of biosorbents, and indicators of the economic efficiency of their production are considered.

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