Biological and Pharmaceutical Bulletin
Online ISSN : 1347-5215
Print ISSN : 0918-6158
ISSN-L : 0918-6158
Inhibitory Effects of Tannins on NADH Dehydrogenases of Various Organisms
Kiyoshi KONISHI, Hirokazu ADACHI, Naoko ISHIGAKI, Yumiko KANAMURA, Isao ADACHI, Takashi TANAKA, Itsuo NISHIOKA, Gen-ichiro NONAKA, Isamu HORIKOSHI
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Keywords: NADH dehydrogenase, respiratory chain, tannin, mitochondria, bacteria
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1993 Volume 16 Issue 7 Pages 716-718

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Abstract

We examined the effects of purified tannins and related compounds (33 species) on NADH-ubiquinone-1 oxidoreductase activity in four kinds of organism (Paracoccus denitrificans, Bacillus subtilis, Photobacterium phosphoreum, and Thermus thermophilus HB-8) and rat liver mitochondria. In addition to pentagalloylglucose, which was reported as a potent inhibitor of NADH dehydrogenases (NDH), sanguiin H-11, oolonghomobisflavan A, and polymerized procyanidin are potent inhibitors for both types of NDH (NDH-1 and NDH-2). We found that some other tannins contained in tea are also inhibitors of NDH from all organisms.

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