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Abstract

Lactobacillus fermentum KU200060 was isolated from watery kimchi and its probiotic characteristics were evaluated, including tolerance to artificial gastric acid and bile salt, production of enzymes, ability to adhere to HT-29 cells, and antibiotic susceptibility. The antibacterial and antibiofilm effects of L. fermentum KU200060 against Streptococcus mutans KCTC 5316 were compared to those of Lactobacillus rhamnosus GG and Lactobacillus brevis KU15006. L. fermentum KU200060 demonstrated higher antibacterial activity and inhibition of biofilm formation by S. mutans than L. rhamnosus GG via inhibiting formation of water-insoluble glucan and related gene expression. In addition, L. fermentum KU200060 was applied as a probiotic in yogurt, and its physicochemical property and sensory value demonstrated its potential as a yogurt starter. The physicochemical characteristics and consumer acceptability of the probiotic yogurt containing L. fermentum KU200060 were not significantly different compared to those of the control yogurt. Therefore, L. fermentum KU200060 could be used for oral health in the probiotic industry.

Keywords: Anticavity activity; Oral health; Probiotic yogurt; Probiotics; Streptococcus mutans.

Research Insights

SupplementHealth OutcomeEffect TypeEffect Size
Lactobacillus fermentumReduced Streptococcus mutans ActivityBeneficial
Large
Lactobacillus fermentumViability as Probiotic Yogurt StarterBeneficial
Moderate
Lactobacillus fermentum Lf-33Enhanced Gut HealthBeneficial
Moderate
Lactobacillus fermentum Lf-33Reduced Biofilm FormationBeneficial
Large
Lactobacillus fermentum Lf-33Reduced Streptococcus mutans ActivityBeneficial
Large
Lactobacillus fermentum LF61Improved Antibacterial ActivityBeneficial
Large
Lactobacillus fermentum LF61Improved Oral HealthBeneficial
Large
Lactobacillus fermentum MAK20L13FIncreased Consumer Acceptability of Probiotic YogurtNeutral
Small
Lactobacillus fermentum MAK20L13FReduced Biofilm FormationBeneficial
Large
Lactobacillus fermentum MAK20L13FReduced Streptococcus mutans ActivityBeneficial
Large
Lactobacillus fermentum UALf-32Potential Probiotic BenefitsBeneficial
Large
Lactobacillus fermentum UALf-32Reduced Streptococcus mutans ActivityBeneficial
Large
Lactobacillus fermentum VPro 14Reduced Mutans Streptococcus CountsBeneficial
Large
Lactobacillus fermentum VPro 14Suitability as a Probiotic Yogurt StarterBeneficial
Moderate
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