文章基本信息

标题：Inhibitory Effects of Citrus hassaku Extract and Its Flavanone Glycosides on Melanogenesis
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作者：Kimihisa Itoh ; Noriko Hirata ; Megumi Masuda 等
期刊名称：Biological and Pharmaceutical Bulletin
印刷版ISSN：0918-6158
电子版ISSN：1347-5215
出版年度：2009
卷号：32
期号：3
页码：410-415
DOI：10.1248/bpb.32.410
出版社：The Pharmaceutical Society of Japan
摘要：The 50% ethanolic extract (CH-ext) obtained from the unripe fruit of Citrus hassaku exhibited significant tyrosinase inhibitory activity. The CH-ext showed antioxidant activity, such as superoxide dismutase (SOD)-like activity and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging activity. Activity-guided fractionation of the CH-ext indicated that flavanone glycoside-rich fractions showed potent tyrosinase inhibitory activity. Further examination revealed that the tyrosinase inhibitory activity and antioxidant activity of the CH-ext were attributable to naringin and neohesperidin, respectively. The CH-ext showed inhibition of melanogenesis without any effects on cell proliferation in cultured murine B16 melanoma cells after glucosamine exposure. The topical application of the CH-ext to the dorsal skin of brownish guinea pigs showed in vivo preventive effects against UVB-induced pigmentation.
关键词：Citrus hassaku;flavanone glycoside;tyrosinase;melanogenesis