Functional food ingredients based on organic complexes of biometals with compounds of postbiotic origin
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Дата
2022
Автори
Назва журналу
Номер ISSN
Назва тому
Видавець
Анотація
Functional food ingredients based on complexes of biometals,
products of postbiotic origin and dietary fiber of wheat bran were obtained in the work.
Products of postbiotic origin were obtained by ultrasonic treatment and enzymatic
conversion of peptidoglycans of Lactobacillus delbrueckii subsp. Bulgaricus B-3964.
As a result of these transformations, a mixture of amino acids, low molecular weight
peptides and muropeptides was obtained, the concentration of which is 10.24 mg/cm
3
,
6.45 mg/cm
3
and 2.25 mg/cm
3
, respectively. This hydrolyzate was used as a mixed
ligand system to obtain complexes of +.Fe
3+
,
Са
2+
and Mg
2+
. The progress of
complexation was monitored using nephelometry. It has been established that the
studied system of bioligands binds Fe
3+
ions in quantity 32 mol/dm
3
·10
-2
, Са
2+
– 28
mol/dm
3
·10
-2
та Mg
2+
– 24 mol/dm
3
·10
-2
. The behavior of complexes at different pH
and temperature values was studied. They are found to be stable in the pH range
inherent in most food and digestive systems. The differential scanning calorimetry
method shows that the obtained complexes are stable in the temperature range of 44–
180 °С, which allows to recommend them as functional food ingredients for food
products whose technology requires high-temperature processing. The feasibility of
the obtained biometals complexes immobilization at dietary fibers is substantiated. It
is proved that immobilization occurs only by physical sorption, which contributes to
the complete release of the active components in environments that mimic the pH of
the small intestine, where the absorption of biometals is been. The presence in the
investigated ingredients composition of the bimetals in organic form, low molecular
weight muropeptides with immunotropic activity, dietary fibers, allows to classify these
preparations in the category of polyfunctional.
Опис
Sirotyuk A. Functional food ingredients based on organic complexes of biometals with compounds of postbiotic origin / A. Sirotyuk ; advisor A. Kapustian // Black Sea Science 2022 : proc. of the Intern. Competition of Student Scientific Works / Odesa National University of Technology ; eds. B. Yegorov, M. Mardar [et al.]. – Odessa : ONUT, 2022. – P. 75–83 : tabl., fig. – Ref.: 21 tit.
Ключові слова
functional food ingredients, biometals, postbiotics, chelate complexes, muropeptides, dietary fiber