First characterization of the probiotic potential of lactic acid bacteria isolated from Costa Rican pineapple silages

Author:

Wen Fang Wu Wu Jannette1,Redondo-Solano Mauricio2,Uribe Lidieth3,WingChing-Jones Rodolfo4,Usaga Jessie5,Barboza Natalia6

Affiliation:

1. Food Technology Department, Universidad de Costa Rica, San Pedro, San José, Costa Rica

2. Research Center for Tropical Diseases (CIET) and Food Microbiology Research and Training Laboratory (LIMA), College of Microbiology, University of Costa Rica (UCR), Universidad de Costa Rica, San Pedro, San José, Costa Rica

3. Agronomic Research Center (CIA), Universidad de Costa Rica, San Pedro, San José, Costa Rica

4. Animal Science Department, Animal Nutrition Research Center (CINA), Universidad de Costa Rica, San Pedro, San José, Costa Rica

5. National Center for Food Science and Technology (CITA), Universidad de Costa Rica, San Pedro, San José, Costa Rica

6. Food Technology Department, National Center for Food Science and Technology (CITA), Center for Research in Cellular and Molecular Biology (CIBCM), Universidad de Costa Rica, San Pedro, San José, Costa Rica

Abstract

Background Agro-industrial waste from tropical environments could be an important source of lactic acid bacteria (LAB) with probiotic potential. Methods Twelve LAB isolates were isolated from pineapple silages. The species identification was carried out considering 16S rRNA and pheS genes. Experiments to evaluate the probiotic potential of the isolates included survival under simulated gastrointestinal environment, in vitro antagonistic activity (against Salmonella spp. and Listeria monocytogenes), auto-aggregation assays, antibiotic susceptibility, presence of plasmids, adhesiveness to epithelial cells, and antagonistic activity against Salmonella in HeLa cells. Results Lacticaseibacillus paracasei, Lentilactobacillus parafarraginis, Limosilactobacillus fermentum, and Weissella ghanensis were identified. Survival of one of the isolates was 90% or higher after exposure to acidic conditions (pH: 2), six isolates showed at least 61% survival after exposure to bile salts. The three most promising isolates, based on survivability tests, showed a strong antagonistic effect against Salmonella. However, only L. paracasei_6714 showed a strong Listeria inhibition pattern; this isolate showed a good auto-aggregation ability, was resistant to some of the tested antibiotics but was not found to harbor plasmids; it also showed a high capacity for adhesion to epithelial cells and prevented the invasion of Salmonella in HeLa cells. After further in vivo evaluations, L. paracasei_6714 may be considered a probiotic candidate for food industry applications and may have promising performance in acidic products due to its origin.

Funder

The Costa Rican Ministry of Science and Technology

The University of Costa Rica (UCR), Projects

Publisher

PeerJ

Subject

General Agricultural and Biological Sciences,General Biochemistry, Genetics and Molecular Biology,General Medicine,General Neuroscience

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3