Antifungal activities and effect of Lactobacillus casei AST18 on the mycelia morphology and ultrastructure of Penicillium chrysogenum
文献类型: 外文期刊
第一作者: Li, Hongjuan
作者: Li, Hongjuan;Zhang, Shuwen;Lu, Jing;Liu, Lu;Uluko, Hankie;Pang, Xiaoyang;Xue, Haixiao;Zhao, Lili;Kong, Fanhua;Lv, Jiaping;Sun, Yanjun
作者机构:
关键词: Antifungal;Lactobacillus casei;Ultrastructure;Autophagy;TEM
期刊名称:FOOD CONTROL ( 影响因子:5.548; 五年影响因子:5.498 )
ISSN: 0956-7135
年卷期: 2014 年 43 卷
页码:
收录情况: SCI
摘要: The antifungal effects of Lactobacillus casei AST18 on Penicillium chtysogenum. were investigated. Viable bacteria were used to detect the minimum inhibitory concentration of lactic acid bacteria (10(2) CFU/mL) to inhibit the growth of P. chlysogenum. Results showed that L casei AST18 inhibited the growth of P. chrysogenum. The mycelial morphology was also altered. The scanning electron microscopy images of P. chrysogenum exposed to L casei AST18 further showed that the mycelia were collapsed and appeared transparent. Numerous clots were also observed in the fungal cytoplasm. The tip of the hypha was deformed and exhibited a moniliform or inflated shape. The transmission electron microscopy images of L casei AST18-exposed P. chrysogenum showed the occurrence of autophagy and death of fungal cells. Changes in the morphological characteristics of P. cluysogenum were observed in the antifungal activity experiment with viable bacteria, but such changes were not evident in the cell-free culture filtrate of L casei AST18. This bacterial strain showed high antifungal activities and could be used as a fungal inhibitor in food and medicine. (c) 2014 Elsevier Ltd. All rights reserved.
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