Premium
CONDITIONS FOR THE AUTOLYSIS OF ALPHA‐GALACTOSIDES AND PHYTIC ACID IN CALIFORNIA SMALL WHITE BEANS
Author(s) -
BECKER ROBERT,
OLSON ALFRED C.,
FREDERICK DORIS P.,
KON SAMUEL,
GUMBMANN MICHAEL R.,
WAGNER JOSEPH R.
Publication year - 1974
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1974.tb17975.x
Subject(s) - raffinose , stachyose , phytic acid , autolysis (biology) , chemistry , food science , sucrose , hydrolysis , inositol , biochemistry , incubation , galactose , enzyme , receptor
The conditions for the autolysis of stachyose, raffinose and phytic acid in California small white beans were determined. It was found that initially the beans contain about 3.7% stachyose, 0.4% raffinose and no detectable verbascose. Optimum conditions for autolysis of these sugars are pH 5 and 45–65°C. Approximately 30% of the sugars are hydrolyzed in 9 hr, 50% in 24 hr and 70% in 48 hr. Disappearance of the oligosaccharides is accompanied by corresponding increases in galactose and sucrose. Other changes occur during incubation, including the hydrolysis of phytic acid with the production of inorganic phosphate and inositol. Optimum conditions for the production of inorganic phosphate and inositol are pH 5 and 35–45°C. When fed to rats incubated preparations of beans produced less hydrogen than nonincubated preparations.