Study on Bacteriostasis of Usnic Acid

doi:10.7506/spkx1002-6630-200905028

FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (5 ): 124-125.doi: 10.7506/spkx1002-6630-200905028

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Study on Bacteriostasis of Usnic Acid

GULNAR Baki，ABDULLA Abbas*

(1. College of Animal Sciences, Xinjiang Agricultural University, Xinjiang 830052, China；
2. College of Life Sciences and Technology, Xinjiang University, Xinjiang 830046, China)

Received:2008-11-27 Online:2009-03-01 Published:2010-12-29
Contact: ABDULLA Abbas* E-mail:abdulla@xju.edu.cn

Abstract

Abstract:

In this study, the inhibitory effects of usnic acid against Staphylococcus aureus, short-chain Bacillus, Bacillus subtilis, Bacillus thuringiensis and E. coli were investigated, and the bacteriostasis of usnic acid was compared with that of benzoic acid and sorbic acid. The results showed that the bacteriostasis of usnic acid is superior to that of benzoic acid and sorbic acid; the minimal inhibitory concentrations (MIC) of usnic acid against these bacteria are 0.557, 0.525, 0.557, 0.500 and 1.76 mg/ml, respectively; the inhibitory effects of usnic acid against these bacteria decrease in the following order: Staphylococcus aureus ＞ short-chain Bacillus ＞ Bacillus subtili ＞Bacillus thuringiensis ＞ E. coli.

Key words: usnic acid, bacteriostasis, antibacterial capacity

CLC Number:

TS201.2

GULNAR Baki，ABDULLA Abbas*. Study on Bacteriostasis of Usnic Acid[J]. FOOD SCIENCE, 2009, 30(5 ): 124-125.

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Study on Bacteriostasis of Usnic Acid

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