IN VITRO   DIGESTIBILITY OF CRYSTALLINE PROTEINS FROM BEANS (PHASEOLUS VULGARIS).

The susceptibility of crystalline and amorphous proteins from beans to enzymatic hydrolysis was compared. The crystalline proteins were obtained by precipitation the crystals (5⁰C, 18 h) from acid extracts. The amorphous forms were obtained by isoelectric precipitation of proteins from alkaline extracts. The content of proteins in crystalline forms was higher (81-82%) than in amorphous forms (77%). The differences were observed for the susceptibilities of crystalline and amorphous proteins to enzymes. The crystalline proteins showed higher values for in vitro digestibility (80-81%) than amorphous proteins (78-80%). The reverse relationship was observed when the proteins were digested with one enzyme, i.e. trypsin, and the results were monitored by electrophoretical separation of proteins and by determining the increase in free α-amino groups.

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DETERMINATION OF TRYPSIN INHIBITOR ACTIVITY OF MICROWAVE-HEATED BEAN SEEDS USING BROMOCRESOLE PURPLE INDEX (BCPI

EFFECT OF EXTRUSION VARIABLES ON AMINO ACIDS, AVAILABLE LYSINE AND IN VITRO PROTEIN DIGESTIBILITY OF THE EXTRUDATES FROM PINTO BEAN (PHASEOLUS VULGARIS).

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eISSN:	2083-6007
ISSN:	1230-0322

W latach 2022-2024 kwartalnik naukowy Polish Journal of Food and Nutrition Sciences realizuje projekt nr RCN/SP/0520/2021/1 finansowany ze środków budżetu państwa – Ministerstwo Edukacji i Nauki w ramach programu „Rozwój czasopism naukowych”. Dofinansowanie wynosi 120 000 zł. W ramach projektu podejmowane są działania zmierzające do podniesienia poziomu praktyk wydawniczych i edytorskich, zwiększenia wpływu czasopism na rozwój nauki oraz utrzymania się czasopism w międzynarodowym obiegu naukowym.

In the years 2022-2024, the scientific quarterly Polish Journal of Food and Nutrition Sciences accomplishes a project no. RCN/SP/0520/2021/1 financed from the state budged – Ministry of Education and Science Republic of Poland in the framework of a program “Development of scientific journals”. The financing amounts to 120,000 PLN. The program aims at improving the level of publishing and editing practices, increasing the impact of scientific journals on science development, and extending the international range of scientific journals.