Document Detail


Determination of 15 Isoflavone Isomers in Soy Foods and Supplements by High-Performance Liquid Chromatography.
MedLine Citation:
PMID:  22433078     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Soy isoflavone is the generic name for the isoflavones found in soy. We determined the concentrations of 15 soy isoflavone species, including 3 succinyl glucosides, in 22 soy foods and isoflavone supplements by high-performance liquid chromatography (HPLC). The total isoflavone contents in 14 soy foods and 8 supplements ranged from 45 to 735 µg/g and 1,304 to 90,224 µg/g, respectively. Higher amounts of succinyl glucosides were detected in natto, a typical fermented soy product in Japan; these ranged from 30 to 80 µg/g and comprised 4.1-¬10.9% of the total isoflavone content. In soy powder, 59 µg/g of succinyl glucosides were detected, equivalent to 4.6% of the total isoflavone content. These data suggest that the total isoflavone contents may be underestimated in the previous studies that have not included succinyl glucosides, especially for Bacillus subtilis-fermented soy food products.
Authors:
Kaoru Yanaka; Jun Takebayashi; Teruki Matsumoto; Yoshiko Ishimi
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-3-21
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  -     ISSN:  1520-5118     ISO Abbreviation:  -     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-3-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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