FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (7): 35-38.

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Study on Antimicrobial Activity of Vitis L. Ploysaccharide

 WANG  Zhong-Min, CHENG  Ming-Dong, WANG  You-Ping   

  1. College of Food Science, Xinjiang Agricultural University, Urumqi 830052, China
  • Online:2007-07-15 Published:2011-10-24

Abstract: Antimicrobial activity of Vitis L. ploysaccharide(VLP) were tested against 3 bacteria in food. The results showed that there are stronger antimicrobial effects on E.scherichia coli than on Bacillus sttbtilis except Staphy lococcus aureus. To the same species of grape, the antibiotic activity is enhanced with the increase of average molecular weight of VLP; while to different kinds, the white grape antibiotic activity is better than the red one. The inhibition effects of VLP against milk microbers were then studied. VLP shows significant inhibitant activity against the medium baterial count, but the milk VLP has little inhibitant activity against antimicrobial activity to the total bacillus and also thermophilic bacillus.In 4℃, the milk added to VLP-B0 can help restore 7 days, 3 days longer than the milk without VLP or 5 days longer than the fresh milk in 22℃.

Key words: Vitis L. ploysaccharide, antimicrobial activity, fresh milk