Lactobacillus plantarum Strains from Fermented Vegetables as Potential Probiotics
Keywords:
Lactobacillus plantarum, aggregation, cell surface hydrophobicity, antimicrobial activity, gastrointestinal tract toleranceAbstract
The present study was conducted in order to evaluate the probiotic properties of 13 strains of Lactobacillus plantarum. All strains exhibited adhesion ability by autoaggregation and cell hydrophobicity determination. Six strains succeeded in exhibiting positive coaggregation with Escherichia coli O157:H7 DMST 12743 and Salmonella Typhimurium ATCC 13311. All strains were resistant to clindamycin, kanamycin, ciprofloxacin, streptomycin, cepfoxitin, oxacillin and vancomycin but susceptible to chloramphenicol, rifampin and penicillin. Most strains exhibited antimicrobial activity against the pathogens by the spot-on-lawn method. Seven strains could display moderate acid tolerance and high bile tolerance. Moreover, four strains showed heat tolerance, with survival rates exceeding 80% at 65 °C for 30 min. Based on the probiotic criteria, L. plantarum TISTR 2075 had good potential as a probiotic for further food applications.
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online 2452-316X print 2468-1458/Copyright © 2022. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/),
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