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Urease activity in soybean meal products
Author(s) -
Smith Allan K.,
Belter Paul A.,
Anderson Robert L.
Publication year - 1956
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02665111
Subject(s) - urease , soybean meal , food science , chemistry , titration , meal , raw material , chromatography , biochemistry , enzyme , organic chemistry
Summary A method which uses direct titration of ammonia as a measure of urease activity was modified for use in the assay of raw and of slightly denatured soybean meal. The modifications which were adopted were the use of glutathione, a presoaking of the sample for 30 min. at 40°C., and making of the assay at 40°C. Data on the urease activity of several varieties of soybeans, and for immature and frost‐damaged soybeans were determined.