Food Science and Technology International, Tokyo
Online ISSN : 1881-3976
Print ISSN : 1341-7592
ISSN-L : 1341-7592
Notes
Photo-Isomerization of the Nasunin, the Major Eggplant Anthocyanins
Kazuya HAYASHIHiroko SHINAGAWAAtsuko SUZUKIAkio TSUKUI
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1998 年 4 巻 1 号 p. 25-28

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It was reported that the acyl moieties of acylated anthocyanins with hydroxycinnamic acids were photo-isomerized from the trans- to the cis-isomer by light irradiation. We studied the effects of light irradiation on nasunin, p-coumaroylated anthocyanin from eggplant, and characterized the photo-isomerized anthocyanin by high performance liquid chromatography and fast atom bombardment mass spectroscopy. The photo-isomerization occurred under acidic conditions and was repressed with α-glucosylrutin that strongly absorbed ultraviolet light.

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© 1998 by the Japanese Society for Food Science and Technology
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