Study on Combined Inhibitory Effects of Chinese Herb Extracts against Alternaria alternate

doi:10.7506/spkx1002-6630-200903006

FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (3): 36-38.doi: 10.7506/spkx1002-6630-200903006

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Study on Combined Inhibitory Effects of Chinese Herb Extracts against Alternaria alternate

WU Zhen-yu1，AI Qi-jun2,*，WANG Yan1，WEI Yue-qin1，Hasigegen3，ZHANG Wei1

(1.Department of Plant Science and Technology, Beijing University of Agriculture , Beijing 102206, China；
2.Department of Food Science, Beijing University of Agriculture, Beijing 102206, China；3.College of Food Science
and Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China)

Received:2008-01-09 Revised:2008-02-24 Online:2009-02-01 Published:2010-12-29
Contact: AI Qi-jun2,* E-mail:aqjbnf@sohu.com

Abstract

Abstract:

Agar plate tests were conducted to test the inhibitory effects in-vitro of Chinese herb extracts such as pyrolin, Coptis chinensis Franch extract, Phellodendron chinense Schneid extract and Magnolia officinalis Rehd extract against Alternaria alternate in order to find the new type natural antisepic agent. Based on linear regression, it was calculated that the 50% of effective concentration (EC50) of these extracts are 0.22, 10.19, 10.35, 0.34 mg/ml respectively. According to EC50, five ratios were determined by six equal-part points of additive action line, and synergism was identified by co-toxicity factor method. The result showed that the extracts of Coptis chinensis Franch and Magnolia officinalis Rehd with the ratio of 25:2 are the best mixture for controlling A. alternate.

Key words: Chinese herb extract, Alternaria alternate, inhibitory effect

CLC Number:

R284.2

WU Zhen-yu1，AI Qi-jun2,*，WANG Yan1，WEI Yue-qin1，Hasigegen3，ZHANG Wei1. Study on Combined Inhibitory Effects of Chinese Herb Extracts against Alternaria alternate[J]. FOOD SCIENCE, 2009, 30(3): 36-38.

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Study on Combined Inhibitory Effects of Chinese Herb Extracts against Alternaria alternate

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