您好，欢迎访问中国农业科学院 机构知识库！

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Inactivation of Salmonella spp. and Listeria spp. by Palmitic, Stearic, and Oleic Acid Sophorolipids and Thiamine Dilauryl Sulfate

文献类型： 外文期刊

作者： Zhang, Xuejie 1 ; Ashby, Richard 2 ; Solaiman, Daniel K. Y. 2 ; Uknalis, Joseph 2 ; Fan, Xuetong 2 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Vegetables & Flowers, Beijing, Peoples R China

2.USDA ARS, Eastern Reg Res Ctr, Wyndmoor, PA USA

关键词： sophorolipids;Listeria monocytogenes;Salmonella;thiaminedilaurylsulfate;cell membrane

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.64； 五年影响因子：6.32 ）

ISSN： 1664-302X

年卷期： 2016 年 7 卷

页码：

收录情况： SCI

摘要： Food contaminated with human pathogens, such as Salmonella spp. and Listeria monocytogenes, frequently causes outbreaks of foodborne illness. Consumer concern over the use of synthesized antimicrobials to enhance microbial food safety has led to a search of natural alternatives. The objectives of this study were to evaluate the antimicrobial activity of various types of sophorolipids (SLs) and thiamine dilauryl sulfate (TDS) against pathogenic Salmonella spp. and Listeria spp. Both free and lactonic forms of SLs were synthesized from Candida bombicola using palmitic, stearic, and oleic acids as co-feedstocks. TDS and purified SLs were used to treat cocktails of Salmonella spp. and Listeria spp. Results showed that lactonic SLs had higher antimicrobial activity than the free-acid form, and Gram-positive Listeria spp. were more susceptible to SLs and TDS than Gram-negative Salmonella spp. Listeria populations were reduced from an initial concentration of 7.2 log CFU/mL to a non-detectible level within a 1 min treatment of 0.1% (w/v) lactonic SLs and TDS in the presence of 20% ethanol, which itself did not significantly reduce the populations. There were no significant differences in the antimicrobial efficacy among palmitic, stearic, and oleic acid-based SLs against Salmonella or Listeria spp. Ethanol was utilized to improve the antimicrobial activity of free-acid SLs against Gram-negative bacteria. In general, TDS was more effective than the SLs against Salmonella and Listeria spp. scanning electron microscopy and transmission electron microscopy images showed that SLs and TDS damaged Listeria cell membranes and resulted in cell lysis. Overall, our results demonstrated that SLs and TDS in the presence of ethanol can be used to inactivate foodborne pathogens, especially Gram-positive bacteria.

  • 相关文献

[1]Quantitative microbial risk assessment for Listeria monocytogenes in cold smoked salmon. H. L. Lauzon,R. Gospavic,M. N. Haque,F. Leroi,V. Popov. 2010

[2]The Fabrication of Bio-ceramsite for the Removal of Heavy Metals and Its Toxicity to Bacteria. Shi Yan,Qi Xuebin,Gao Qing,Shi Yan,Sun Ken,Sun Ken. 2015

[3]Effects of Exogenous Abscisic Acid on Cell Membrane and Endogenous Hormone Contents in Leaves of Sugarcane Seedlings under Cold Stress. Yang, Li-Tao,Li, Yang-Rui,Wu, Jian-Ming,Huang, Xing,Chen, Ming-Hui,Yang, Li-Tao. 2015

[4]A mutation in the NLRC5 promoter limits NF-kappa B signaling after Salmonella Enteritidis infection in the spleen of young chickens. Chang, Guobin,Ma, Teng,Xu, Lu,Wang, Hongzhi,Li, Zhiteng,Guo, Xiaomin,Xu, Qi,Chen, Guohong,Liu, Xiangping.

[5]Changes in antimicrobial resistance among Salmonella enterica subspecies enterica serovar Pullorum isolates in China from 1962 to 2007. Pan, Zhiming,Wang, Xiaoquan,Zhang, Xiaoming,Geng, Shizhong,Chen, Xiang,Pan, Weijuan,Cong, Qiuxia,Jiao, Xinan,Liu, Xiufan,Liu, Xuexian.

[6]Detection of Salmonella spp. by a loop-mediated isothermal amplification (LAMP) method targeting bcfD gene. Zhuang, L.,Gong, J.,Wang, C.,Gong, J.,Zhu, C.,Yu, Y.,Dou, X.,Liu, X.,Xu, B.,Li, Q.,Zhuang, L.,Wang, C..

[7]RsbV of Listeria monocytogenes contributes to regulation of environmental stress and virulence. Zhang, Zaichao,Meng, Qingling,Qiao, Jun,Yang, Lihong,Wang, Guanglei,Chen, Chuangfu,Meng, Qingling,Cai, Xuepeng,Zhang, Lijuan.

[8]Impact of rli87 gene deletion on response of Listeria monocytogenes to environmental stress. Xie Kun,Meng Qingling,Jun Qiao,Peng Yelong,Liu Tianli,Chen Cheng,Ma Yu,Hu Zhengxiang,Chen Chuangfu,Cai Xuepeng.

[9]Occurrence and antimicrobial susceptibility of Listeria monocytogenes isolates from retail raw foods. Wang, Xiu-Mei,Liu, Hui-Fang,Zhang, Wan-Jiang,Si, Wei,Yu, Shen-Ye,Liu, Si-Guo,Lu, Xing-Feng,Yin, Lu,Shao, Mei-Li. 2013

[10]The roles of noncoding RNA Rli60 in regulating the virulence of Listeria monocytogenes. Peng, Ye-Long,Meng, Qing-Ling,Qiao, Jun,Xie, Kun,Chen, Cheng,Liu, Tian-Li,Hu, Zheng-Xiang,Ma, Yu,Chen, Chuang-Fu,Cai, Xue-Peng.

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台