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논문 기본 정보

자료유형
학술저널
저자정보
Seok Joong Kim (Dongduk Women"s University) Jee-Young Shin (Korea Food Research Institute) Moo-Ho Cho (Catholic University of Daegu) Young-Sook Oh (Catholic University of Daegu) Na-Young Park (Catholic University of Daegu) Shin Ho Lee (Catholic University of Daegu)
저널정보
한국식품과학회 Food Science and Biotechnology Food Science and Biotechnology vol 16. no 3
발행연도
2007.6
수록면
444 - 450 (7page)

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초록· 키워드

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The antioxidant activity and isoflavone content of chokong, Rhynchosia nolubilis seeds pickled in vinegar at 4℃ for 2 weeks, were investigated. The polyphenol content and 2,2-diphenyl-1-pycrylhydrazyl (DPPH) radical-scavenging capacity were lower in chokong than in raw seeds. Based on isoflavone analysis, the aglycone (daidzein and genistein) content was high in chokong while the content of the corresponding glucosides (daidzin and genistin) was similar to that in raw seeds. Thermal processing, in which seeds were heated in vinegar at 121℃ for 20 min, reduced the polyphenol content but did not affect the DPPH radical-scavenging capacity compared to the pickling process. The heated seeds had a 2.6 to 2.7 times higher glucoside content and 51 to 55% lower aglycone content than chokong, depending on the kind of vinegar used. During pickling and thermal processing, vinegars were more effective at eluting antioxidants and isoflavones from seeds than other solutions such as acetic, citric acid and HCL solutions, distilled water, and phosphate buffer (pH 7.0).

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Abstract
Introduction
Materials and Methods
Results and Discussion
Acknowledgments

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