科研之友
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摘要
A total of 109 bacterial strains isolated from Argentinean food of plant origin were screened for the production of bacteriocin-like substances. Antimicrobial activity of extracts from isolated cultures was evaluated according to the agar diffusion plate method. Twenty strains belonged to Bacillus spp. and Paenibacillus spp. were selected based on their activity against Bacillus cereus, Bacillus pumilus, Bacillus subtilis, Paenibacillus larvae, Paenibacillus polymyxa and Staphylococcus aureus. The antimicrobial activity of the extracts was sensitive to the proteolytic action of trypsin. This suggests that the antimicrobial substances produced would be bacteriocin-like substances. The identification of bacteriocin-like substances active against pathogenic and food-spoilage bacteria is an important aspect of food protection.
- 出版日期2010
