Studies on Antimicrobial and Antioxidative Substance of Yuzu (Citrus junos hort. ex Tanaka) Seed


	Journal of Biological Sciences
	Year: 2006 \| Volume: 6 \| Issue: 1 \| Page No.: 135-139 DOI: 10.3923/jbs.2006.135.139

Studies on Antimicrobial and Antioxidative Substance of Yuzu (Citrus junos hort. ex Tanaka) Seed

Yukiko Nakazono , Yuka Watanabe , Fumio Hashinaga and Kenjiro Tadera

Abstract: A yuzu (Citrus junos hort. ex Tanaka) seed extract with 80% methanol showed a potent antimicrobial activity against Micrococcus luteus, Staphylococcus aureus, Escherichia coli and Salmonella enteritidis. The antimicrobial substance was purified by adsorption column chromatography and identified as p-methoxycinnamic acid by gas chromatography-mass spectrometry. Minimum inhibitory concentrations of p-methoxycinnamic acid against M. luteus, S. aureus, E. coli and S. enteritidis were 80, 60, 50 and 60 μg mL^-1, respectively. In addition, this structure suggested that p-methoxycinnamic acid had the antioxidative activity and we investigated also the antioxidative activity. The antioxidative activity of p-methoxycinnamic acid was about 70-80% of that of BHA, BHT and α-tocopherol.

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How to cite this article:

Yukiko Nakazono , Yuka Watanabe , Fumio Hashinaga and Kenjiro Tadera , 2006. Studies on Antimicrobial and Antioxidative Substance of Yuzu (Citrus junos hort. ex Tanaka) Seed. Journal of Biological Sciences, 6: 135-139.

DOI: 10.3923/jbs.2006.135.139

URL: https://scialert.net/abstract/?doi=jbs.2006.135.139

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