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Lactic acid bacteria as promising dietary-derived bioadsorbents for foodborne contaminants: Mechanism, application advances and future perspectives
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This review examined lactic acid bacteria as potential bioadsorbents for foodborne contaminants including mycotoxins and microplastics. Researchers found that these beneficial bacteria can bind and sequester various pollutants through cell surface interactions, suggesting that dietary lactic acid bacteria may offer a safe, cost-effective approach to reducing human exposure to contaminants in the food chain.
Foodborne contaminants, such as mycotoxins and microplastics, pose significant threats to human health due to their high toxicity and persistence in the food chain, thus necessitate effective mitigation strategies. Lactic acid bacteria (LAB), characterized by high efficiency, cost-effectiveness, safety, and environmental friendliness, offer a promising solution for adsorbing these pollutants. This review systematically explores the roles, binding locations, interaction forces, and molecular mechanisms underlying LAB-contaminant interactions, as well as the thermodynamics and kinetic properties of the adsorption processes. Notably, LAB strains with outstanding adsorption capabilities are spotlighted, along with innovative enhancement strategies: optimized culture conditions, co-culture systems, nanoparticle functionalization, immobilized cells, and combinations with bio-adsorbents. The review further demonstrates the applications of LAB in ensuring safe food production and maintaining biological health. Future directions include multi-omics-driven gene discovery, genetic engineering techniques for precision regulation, and machine learning for adsorption optimization, advancing mechanistic insights and interdisciplinary solution.
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Adsorption abilities and mechanisms of Lactobacillus on various nanoplastics
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Researchers tested whether Lactobacillus, a common probiotic bacterium, could adsorb nanoplastic particles made of polypropylene, polyethylene terephthalate, and polystyrene. They found that the bacteria could efficiently bind all three types of nanoplastics through electrostatic interactions and hydrogen bonding on their cell surfaces. The study suggests that lactic acid bacteria may have potential as a biological method for reducing nanoplastic contamination in food.
Novel Approaches in Establishing Chemical Food Safety Based on the Detoxification Capacity of Probiotics and Postbiotics: A Critical Review
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This review examines emerging evidence that probiotics and their metabolic byproducts (postbiotics) can help neutralize environmental contaminants in food, including bacterial toxins, mycotoxins, pesticides, heavy metals, and microplastics. Researchers found that various probiotic strains can bind to, transform, or break down these harmful substances through multiple mechanisms. The study highlights biological approaches using beneficial microorganisms as a practical and cost-effective strategy for improving food safety.
Lactiplantibacillus plantarum as a Biosafe Microbial Bridge in the Gut–Environment Continuum
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This review summarizes existing research on a bacterium called Lactiplantibacillus plantarum, which has been studied for roles in soil and water cleanup, agriculture, and fermented foods. Some strains were reported to bind metals like lead and cadmium and to affect microplastic-related toxicity, though the authors note these effects vary by strain and need more testing before real-world use.
Lactic acid bacteria reduce polystyrene micro- and nanoplastics-induced toxicity through their bio-binding capacity and gut environment repair ability
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Mice exposed to micro- and nanoplastics were given lactic acid bacteria that differed in how strongly they bind the particles in lab tests. Stronger binders reduced toxicity more. One weak binder, Lactobacillus plantarum DT22, still lowered toxicity, by raising tight junction proteins and shifting the gut microbiota.
Lactobacillus plantarum reduces polystyrene microplastic induced toxicity via multiple pathways: A potentially effective and safe dietary strategy to counteract microplastic harm
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Mice exposed to polystyrene microplastics were given Lactobacillus plantarum strains that differed in antioxidant activity and in how well they bind the particles. Mice given strong binders had less polystyrene in the body and more in feces. A weakly binding strain also lowered toxicity, apparently through the intestinal barrier and bile acid metabolism.
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