Antioxidant Activity of a Medicine Based on Aspergillus oryzae NK Koji Measured by a Modified t-Butyl Peroxyl Radical Scavenging Assay

Toshiyuki KAWASUMI; Masami SATO; Yoshihiro TSURIYA; Shigenori UENO

doi:10.1271/bbb.63.581

Microbiology & Fermentation Technology Notes

Antioxidant Activity of a Medicine Based on Aspergillus oryzae NK Koji Measured by a Modified t-Butyl Peroxyl Radical Scavenging Assay

Toshiyuki KAWASUMI, Masami SATO, Yoshihiro TSURIYA, Shigenori UENO

著者情報

キーワード: antioxidant, t-butyl peroxyl radical scavengers, medicine, Aspergillus oryzae, koji

ジャーナルフリー

1999 年 63 巻 3 号 p. 581-584

DOI https://doi.org/10.1271/bbb.63.581

詳細

抄録

A koji-based medicine composed of powder of Aspergillus oryzae NK koji, dried yeast, and lactobacilli koji had high antioxidant activity measured by a modified t-butyl peroxyl radical scavenging assay. This activity was mainly derived from A. oryzae NK koji. Digestion of koji-making grain germ medium with several commercial enzymes also increased antioxidant activity. By two weeks of oral administration of A. oryzae NK koji, the serum lipid peroxide levels elevated in STZ-induced diabetic rats could be decreased significantly.

責任著者(Corresponding author)

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