Study on Stability of Bacteriostatic Active Compositions Extracted from Fructus Corni

Abstract

Abstract: Antimicrobial activities of Fructus Corni extracted with ethanol were tested in this study. The results showed that Fructus Corni extracts show strong antibacterial activities. Further more study revealed that the Fructus Corni extract plays a stronger antimicrobial activity against the tested bacterial Staphylococcus aureus and Escherichia coli than potassium sorbate. Extract of Fructus Corni was also studied for its stability to temperature, acid ultraviolet or metal ions. The results showed that the extract is very stable to temperature and ultraviolet. After treated with alkaline, the extract showed loss of antibacterial activity when pH passed 7. The metal ions (Na+, K+, Ca2+, Fe2+, Fe3+) show also little effect on the extract antimicrobial activity.

Key words: Fructus Corni, bacteriostatic, stability

ZHAO Shu-Yan, HU Shi-Bin, WU Huan-Li, TANG Yan, WANG Xian-Lei. Study on Stability of Bacteriostatic Active Compositions Extracted from Fructus Corni[J]. FOOD SCIENCE, 2008, 29(1): 98-101.

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Study on Stability of Bacteriostatic Active Compositions Extracted from Fructus Corni

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