We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Adsorption abilities and mechanisms of Lactobacillus on various nanoplastics
AI summary Read the abstract
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.
As a new type of pollutants, nanoplastics (NPs), which are easily ingested by humans from food wraps, salt, drinking water, have been widely detected in various water environments, and are a threat to human health. It is therefore urgent to develop an efficient method to remove NPs from the diet or relief its harm. In the present study, the possibility of a well-known human probiotic, lactic acid bacteria (LAB), was evaluated to remove NPs from food as an absorbent. The results indicated that LAB from infant feces could efficiently absorb three types NPs, i.e. polypropylene (PP), polyethylene (PE), and polyvinyl chloride (PVC) with the adsorption rates of PP > PE > PVC (PP 78.57%, PE 71.59%, PVC 66.57%) and the Nile red-stained NPs being aggregated on the surfaces of Lactobacillus cells. The smaller the particle size, the stronger the ability of NP adsorption on the cell surface. The hydrophobicity of NPs and bacterial cells affected the adsorption process. The measurement of adsorption rates of different cell components indicated that the overall adsorption effect of cell was better than that of individual cell component. The results of molecular dynamics analysis revealed that adsorption was mainly caused by electrostatic interactions, van der Waals forces, and hydrogen bonds. The hydrophobic interaction was also involved in adsorption process. Overall, this research may provide new information for developing new strategies for NPs removal in intestinal environment.
More Papers Like This
Determination of the ability of native potential probiotic lactobacillus strains in nanoplastic bioremoval in an in-vitro Model
AI summary Read the abstract
Researchers tested 88 native probiotic Lactobacillus strains for their ability to bind and remove polystyrene nanoplastics in laboratory conditions, finding that a cocktail of three strains achieved up to 77% removal. The most effective strain, L. plantarum RP13, showed strong nanoplastic adhesion confirmed by microscopy imaging. The study suggests that certain probiotic bacteria may have potential as a biological approach to reducing nanoplastic exposure in the gastrointestinal tract.
Efficient biosorption of nanoplastics by food-derived lactic acid bacterium
AI summary Read the abstract
Leuconostoc mesenteroides CBA3656, a bacterium isolated from food, bound nanoplastics in lab tests across a wide range of concentrations, pH values and temperatures. The binding looked mainly physical. In animal experiments, more nanoplastics were recovered in the feces of animals given the strain.
Physicochemical adsorption and entrapment of polystyrene and poly(ethylene terephthalate) micro/nanoplastics by a food-associated Lactiplantibacillus pentosus strain isolated from Korean traditional soy sauce
AI summary Read the abstract
Researchers screened bacteria from Korean traditional soy sauce for binding to polystyrene and PET micro- and nanoplastics. Lactiplantibacillus pentosus GH14 bound the most, aided by a water-repelling cell surface, biofilm formation and a tendency to aggregate. All tests were done in the lab, and binding depended mainly on contact time and particle concentration.
Lactic acid bacteria reduce polystyrene micro- and nanoplastics-induced toxicity through their bio-binding capacity and gut environment repair ability
AI summary Read the abstract
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
AI summary Read the abstract
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.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.