Evaluation of phenotypical safety aspects of lactic acid bacteria isolated from artisanal Colonial-type cheese from the south of Brazil

被引:1
|
作者
Lima, Carlos Henrique Gomes de Sousa [1 ]
Carbonera, Nadia [2 ]
Helbig, Elizabete [1 ]
机构
[1] Univ Fed Pelotas, Fac Nutr, Rua Gomes Carneiro 01, BR-96010610 Pelotas, RS, Brazil
[2] Univ Fed Pelotas, Ctr Ciencias Quim Farmaceut & Alimentos, Capao Do Leao, RS, Brazil
来源
JOURNAL OF CANDIDO TOSTES DAIRY INSTITUTE | 2022年 / 77卷 / 01期
关键词
dairy products; isolation; safety; ANTIBIOTIC-RESISTANCE; LACTOBACILLUS; PATHOGENESIS;
D O I
10.14295/2238-6416.v77i1.884
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
This study aimed to isolate and evaluate lactic acid bacteria (LAB) from artisanal Colo-nial-type cheeses commercialized in open markets in Pelotas, RS, in terms of phenotypic safety aspects. Around 105 strains were isolated, 73 were characterized as Gram-positive and cata -lase-negative, and evaluated for phenotypic aspects of virulence. All strains were gelatinase and DNase negative. Regarding hemolytic activity, there was the detection of seven strains as alpha and two as beta-hemolytic, resulting in 64 strains of LAB for antimicrobial susceptibility assess-ment. These isolates were sensitive to chloramphenicol and tetracycline antibiotics. For the other antimicrobials, they showed resistance to ciprofloxacin (93.5%, 58/64), oxacillin 98.4% (63/64), penicillin G 51.6% (41/64), and vancomycin (85.9%, 54/64). Based on these results, the isolates were potentially safe, a conclusion that contributes to the search for new benefi-cial strains for the dairy industry.
引用
收藏
页码:12 / 20
页数:9
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