ArticleBiological trace element research2025
Capsular Polysaccharides Are Crucial for the Biosorption of Aqueous Pb(II) Ions by Limosilactobacillus fermentum B44 In Vitro.
Article in Biological trace element research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Lead (Pb) is a widespread heavy metal pollutant that presents substantial risks to ecological systems and human health. The utilization of probiotic lactic acid bacteria (LAB) for the detoxification of Pb(II) in the host has aroused great interest. However, few studies had focused on the roles of capsular polysaccharide (CPS) in the bacteria adsorption of Pb(II). In the present study, L. fermentum B44 was selected out of nine lactobacilli for its superior absorption capacity of Pb(II) in vitro. The adsorbed Pb(II) ions by B44 cells were predominantly enriched on the capsule. Removal of the CPS from cells of strain B44 by 1 mol/L guanidine hydrochloride (GuHCl) would decrease the adsorption capacity of the host cells. The CPS showed a high capacity for Pb(II) adsorption, and its adsorption behaviour was more accurately described by the Langmuir isotherm model (R
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