ArticleBMC microbiology2023
Antibacterial and antibiofilm potential of Lacticaseibacillus rhamnosus YT and its cell-surface extract.
Article in BMC microbiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed.
- Whole genome sequencing analysis and functional characterization of Lacticaseibacillus rhamnosus HP-B1083.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2026Article
- Beyond probiotics: Lacticaseibacillus rhamnosus as a multi-target antagonist of Pseudomonas aeruginosa infections.Folia microbiologica · 2026Review
- Lactic acid bacteria-derived biosurfactants: emerging strategies for biofilm control, virulence attenuation, and food safety.World journal of microbiology & biotechnology · 2026Review
- Probiotics as an alternative to eliminate Pseudomonas aeruginosa biofilm.Antonie van Leeuwenhoek · 2026Article
- Article
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- Coating silicon catheters with the optimized and stable carotenoid bioproduct from Micrococcus luteus inhibited the biofilm formation by multidrug-resistant Enterococcus faecalis via downregulation of GelE gene expression.Microbial cell factories · 2025Article
- In vitro and in vivo investigation of the antibacterial, antivirulence, and antiquorum sensing activities of β-carotene against difficult-to-treat resistant Pseudomonas aeruginosa.BMC microbiology · 2025Article
- Antimicrobial Activity ofAntibiotics (Basel, Switzerland) · 2025Article
- A Bifidobacterium Strain with Antibacterial Activity, Its Antibacterial Characteristics and In Vitro Probiotics Studies.Microorganisms · 2025Article
- Essential oils and Lactobacillus metabolites as alternative antibiofilm agents against foodborne bacteria and molecular analysis of biofilm regulatory genes.Scientific reports · 2025Article
- Features and rhizosphere colonization strategies ofFrontiers in microbiology · 2025Article
- Antibacterial, antibiofilm, and anti-quorum sensing activities of pyocyanin against methicillin-resistant Staphylococcus aureus: in vitro and in vivo study.BMC microbiology · 2023Article
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Authors and funding
9 authors.
Funding
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Abstract
backgroundFoodborne pathogens and spoilage bacteria survived in the biofilm pose a serious threat to food safety and human health. It is urgent to find safe and effective methods to control the planktonic bacteria as well as the biofilm formation. Substances with antibacterial and antibiofilm activity found in lactic acid bacteria were mainly metabolites secreted in the cell-free supernatant. Previously, Lacticaseibacillus rhamnosus YT was isolated because its cell pellets displayed distinguished antibacterial activity under neutral conditions. This study aimed to investigate the antibacterial and antibiofilm properties of the L. rhamnosus YT cells and its crude cell-surface extract.
resultsThe antibacterial activity of the L. rhamnosus YT cells constantly increased with cells growth and reached the peak value after the cells grew into stationary phase. After cocultivation with the L. rhamnosus YT cells, the biofilm formation of B. subtilis and S. enterica was reduced. The antibacterial activity of the L. rhamnosus YT cells was varied along with various culture conditions (carbon sources, nitrogen sources, medium pH and cultural temperatures) and the antibacterial intensity (antibacterial activity per cell) was disproportional to the biomass. Furthermore, the cell-surface extract was isolated and displayed broad antimicrobial spectrum with a bacteriostatic mode of action. The antibiofilm activity of the extract was concentration-dependent. In addition, the extract was stable to physicochemical treatments (heat, pH and protease). The extract performed favorable emulsifying property which could reduce the water surface tension from 72.708 mN/m to 51.011 mN/m and the critical micelle concentration (CMC) value was 6.88 mg/mL. Besides, the extract was also able to emulsify hydrocarbon substrates with the emulsification, index (E24) ranged from 38.55% (for n-hexane) to 53.78% (for xylene). The E24 for xylene/extract emulsion was merely decreased by 5.77% after standing for 120 h. The main components of the extract were polysaccharide (684.63 μg/mL) and protein (120.79 μg/mL).
conclusionThe properties of the extract indicated that it might be a kind of biosurfactant. These data suggested that L. rhamnosus YT and the cell-surface extract could be used as an alternative antimicrobial and antibiofilm agent against foodborne pathogens and spoilage bacteria in food industry.
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