Trypsin Inhibitor Activity in Commercial Soybean Products in Japan.
نویسندگان
چکیده
منابع مشابه
A Soybean Trypsin Inhibitor
Five trypsin and cu-chymotrypsin inhibitors which have low molecular weights (ranging from 6800 to 8600) and are present in soybean seeds of the Tracy variety have been isolated and purified, and single crystals which give x-ray diffraction data beyond 3-A spacings have been obtained from one of them. The trypsin inhibitor crystallizes in a monoclinic unit cell of symmetry P2, and dimensions a ...
متن کاملCrystalline Soybean Trypsin Inhibitor
A study has been made of the general properties of crystalline soybean trypsin inhibitor. The soy inhibitor is a stable protein of the globulin type of a molecular weight of about 24,000. Its isoelectric point is at pH 4.5. It inhibits the proteolytic action approximately of an equal weight of crystalline trypsin by combining with trypsin to form a stable compound. Chymotrypsin is only slightly...
متن کاملIsolation and Characterization of Trypsin Inhibitors (Kunitz Soybean Trypsin Inhibitor, Bowman-birk Inhibitor) in Soybean
Soybean (Glycine max (L.) Merr.) has emerged as one of the most economical and nutritious foods. Kunitz Soybean Trypsin Inhibitor (KSTI) and Bowman -Birk Inhibitor (BBI) are the two major trypsin inhibitors in soybeans. The ingested soybean trypsin inhibitors cause growth depression as demonstrated in different animal species and human. The main part of the present study was devoted to isolatio...
متن کاملIsoelectric Point Differences in Commercial Soybean Trypsin Inhibitors!
Isoelectric points of Kunitz' crystalline soybean trypsin inhibitor (STl), Bowman-Birk STI, and STI prepared by chromatography on diethylaminoethyI (DEAE)-cellulose were investigated by isoelectric focusing, gel filtration, ion-exchange resin treatment, solubility test, and titration. Results suggest that the STI of Kunitz may have an isoelectric point below pH 4.5. The isoelectric focusing pat...
متن کاملStability of the allergenic soybean Kunitz trypsin inhibitor.
The soybean Kunitz trypsin inhibitor (SKTI) is a 21.5 kDa allergenic protein that belongs to the family of all antiparallel beta-sheet proteins that are highly resistant to thermal and chemical denaturation. Spectroscopic and biochemical techniques such as circular dichroism (CD), ANS fluorescence and proteolysis were used to study its molecular structure under denaturing conditions such as aci...
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ژورنال
عنوان ژورنال: Journal of Nutritional Science and Vitaminology
سال: 1997
ISSN: 0301-4800,1881-7742
DOI: 10.3177/jnsv.43.575