Biocontrol of Listeria monocytogenes ATCC 7644 in Fresh Tomato with Probiotics

被引：0

作者：

Ijabadeniyi, Oluwatosin A. ^{[1
]}

Naidoo, Shanice ^{[1
]}

机构：

[1] Durban Univ Technol, Dept Biotechnol & Food Technol, ZA-4000 Durban, South Africa

来源：

JOURNAL OF PURE AND APPLIED MICROBIOLOGY | 2014年 / 8卷 / 05期

关键词：

D O I：

暂无

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The effectiveness of probiotics Lactobacillus bulgarius and Streptococcus salivarius as biocontrol agents against Listeria monocytogenes ATCC 7644 in fresh tomato throughout storage and their effect on the physicochemical properties of tomato was evaluated. Tomato samples were cut into wedges and inoculated with 10(8) CFU/ml of Listeria monocyto genes ATCC 7644, thereafter inoculated with L.bulgaricus and S.salivarius separately. Tomato was also inoculated with probiotics L.bulgaricus and S.salivarius without inoculation of L.monocytogenes. Nutrient broth was prepared and inoculated with 10(8) CFU/ml of L.monocytogenes ATCC 7644 and thereafter inoculated with L.bulgaricus and S.salivarius separately after which all treatments were stored at 4 degrees C for 72 hours. Chlorine was used as a control and compared against probiotics. L. monocytogenes counts taken during storage period in nutrient broth showed that L. bulgaricus had a 2.19 log reduction and S. salivarius had a 1.65 log reduction. The tomato study showed that L. bulgaricus had a 3.15 log reduction and S.salivarius had alpha 3.01 log reduction. Physicochemical properties of tomato were not affected (p > 0.05) by treatment with probiotics when compared to control. Statistical analysis showed a significant difference between both probiotics and chlorine in tomato. This research indicated that L.bulgaricus and S. salivarius could potentially be used as eco-friendly biocontrol agents in the produce industry.

引用

页码：3973 / 3980

页数：8

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