Preliminary Study on Inhibitory Effect of Anthocyanins from Purple Sweet Potato Against Staph.aureus

Abstract

Abstract: The reults of bacteriostatic experiment of anthocyanins from purple sweet potato indicated that their minimum inhibitory concentration (MIC) on Staph.aureus is 200μg/ml. The observation under transmission electron microscope (TEM) was carried out and the growth curve of Staph.aureus was analyzed. It was indicated that the anthocyanins might change the permeability of cell membrane and make cell excrescent to inhibit cell division. As a result,cytoplasm becomes thin,disas-sembles and even dies. SDS-PAGE analysis suggested that the anthocyanins have some effects on synthesized quantities of some proteins,but no disappearence of special protein lines is found.

Key words: anthocyanins from purple sweet potato, Staph.aureus, inhibitory effect

HAN Yong-Bin, ZHU Hong-Mei, GU Zhen-Xin, FAN Gong-Jian, 吕Ying-Shuang . Preliminary Study on Inhibitory Effect of Anthocyanins from Purple Sweet Potato Against Staph.aureus[J]. FOOD SCIENCE, 2008, 29(10): 59-62.

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Preliminary Study on Inhibitory Effect of Anthocyanins from Purple Sweet Potato Against Staph.aureus

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