食品科学

• 生物工程 • 上一篇    下一篇

有机白萝卜表皮附生乳酸菌抗生素耐药性分析

林 凯1,蔡 婷1,徐顾榕1,宋菲菲1,袁春红1,陈 功2,向文良1,*,张 庆1   

  1. 1.西华大学生物工程学院,西华大学古法发酵(酿造)生物技术研究所,四川省食品生物技术重点实验室,
    四川 成都 610039;2.四川省食品发酵工业研究设计院,四川 成都 611130
  • 出版日期:2015-06-15 发布日期:2015-06-07

Antibiotic Resistance of Epibiotic Lactic Acid Bacteria on the Surface of Organic White Radish

LIN Kai1, CAI Ting1, XU Gurong1, SONG Feifei1, YUAN Chunhong1, CHEN Gong2, XIANG Wenliang1,*, ZHANG Qing1   

  1. 1. Provincial Key Laboratory of Food Biotechnology of Sichuan, Institute of Ancient Brewing Technology, College of Bioengineering,
    Xihua University, Chengdu 610039, China; 2. Sichuan Academy of Food & Fermentation Industries, Chengdu 611130, China
  • Online:2015-06-15 Published:2015-06-07

摘要:

以市售有机白萝卜为研究对象,分析其表皮附生乳酸菌对四环素(tetracycline,TET)、链霉素(streptomycin,STR)和青霉素G(penicillin G,PEN)的耐药性。分离菌株的生理生化特征、随机扩增多态性DNA聚类(random amplified polymorphic DNA,RAPD)、16S rRNA、耐药性和耐药表型多态分析表明:有机白萝卜表皮附生有约4.67×103 CFU/cm2的乳酸菌。分离的187 株乳酸菌分别属于Pediococcus pentosaceus(114/187)、Weissella cibaria(9/187)、Leuconostoc mesenteroides(18/187)、Leuconostoc pseudomesenteroides(7/187)、Leuconostoc citreum(20/187)和Leuconostoc holzapfelii(19/187)。其中,25 株(13.37%)对TET、STR和PEN表现出单一或多重耐药性。在P. pentosaceus中,分别有2 株对STR、TET和PEN三重耐药,13 株对STR和TET二重耐药和4 株对TET单一耐药;L. citreum中,分别有1 株对STR、TET和PEN三重耐药和1 株对STR单一耐药;L. mesenteroides中,分别有1 株对TET单一耐药和1 株对TET和PEN二重耐药;L. pseudomesenteroides和W. cibaria中,分别有1 株对STR和TET、STR和PEN二重耐药。

关键词: 有机白萝卜, 乳酸菌, 四环素, 链霉素, 青霉素G, 耐药性

Abstract:

The epibiotic lactic acid bacteria (LAB) on the surface of organic radish were investigated by MRS culture,
physiological and biochemical characteristics, RAPD, 16S rRNA, antibiotic resistance and phenotype polymorphism.
Approximately 4.67 × 103 CFU/cm2 LAB including 187 isolates colonized on the surface of organic white radish. These
isolates were assigned to Pediococcus pentosaceus (114/187), Weissella cibaria (9/187), Leuconostoc mesenteroides
(18/187), Leuconostoc pseudomesenteroides (7/187), Leuconostoc citreum (20/187) and Leuconostoc holzapfelii (19/187),
respectively. And 25 (13.37%) isolates displayed single-drug or multi-drug resistance to tetracycline (TET), streptomycin
(STR) and penicillin G (PEN). Of these P. pentosaceus isolates, 2 had triplicate resistance to STR, TET and PEN,
13 had double resistance to TET and STR, and 4 had single resistance to STR. Of these L. citreum isolates, 1 had triplicate
resistance to STR, TET and PEN, and 1 had the solo resistance to STR. Furthermore, 2 L. mesenteroides isolates with
TET resistance and double resistance TET and PEN respectively were found, and on the surface of white radish there were
1 L. pseudomesenteroides strain and 1 W. cibaria strain showing double resistance to STR and TET and double resistance to
STR and PEN, respectively.

Key words: organic white radish, lactic acid bacteria, tetracycline, streptomycin, penicillin G, antibiotic resistance

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