The contents and distributions of major isoflavones in commercial soy products

Shyh Hsiang Lin, Hsiang Chi Peng, Yi Wen Chien

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This study investigated the isoflavone content and the in vitro antioxidant ability of various traditional soybean products sold in supermarkets. The distribution and content of four major isoflavones, daidzin plus genistin, daidzein, and genistein were analyzed by HPLC, while the in vitro antioxidant ability was evaluated by measuring the percentage inhibition of the oxidation of linoleic acid. It was found that the distribution and content of isoflavones varied in different traditional soy products. Glycosidic isoflavones (genistin and daidzin) seemed to be the major isoflavones in unfermented products, while genistien was dominant in fermented bean curd but not in miso. Unfermented soy products had better antioxidant abilities according to the results from the in vitro test. However, further investigations are necessary to determine the in vivo antioxidant effects.

Original languageEnglish
Pages (from-to)139-146
Number of pages8
JournalNutritional Sciences Journal
Volume27
Issue number3
Publication statusPublished - Sep 2002

Fingerprint

soybean products
Isoflavones
isoflavones
Antioxidants
daidzin
genistin
antioxidants
miso
Soy Foods
tofu
daidzein
Genistein
supermarkets
genistein
Linoleic Acid
Soybeans
linoleic acid
High Pressure Liquid Chromatography
oxidation
In Vitro Techniques

Keywords

  • Antioxidant ability
  • Isoflavone
  • Soy

ASJC Scopus subject areas

  • Food Science
  • Medicine (miscellaneous)

Cite this

The contents and distributions of major isoflavones in commercial soy products. / Lin, Shyh Hsiang; Peng, Hsiang Chi; Chien, Yi Wen.

In: Nutritional Sciences Journal, Vol. 27, No. 3, 09.2002, p. 139-146.

Research output: Contribution to journalArticle

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