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Lactobacillus fermentum and Lactobacillus plantarum bioremediation ability assessment for copper and zinc
Archives of Microbiology ( IF 2.8 ) Pub Date : 2020-05-27 , DOI: 10.1007/s00203-020-01916-w
Saeed Hasr Moradi Kargar 1 , Najmeh Hadizadeh Shirazi 1
Affiliation  

Some probiotic strains, such as Lactobacillus spp., are options for the removal of heavy metals from food, water and soil. Although copper or zinc are essential for use in many biochemical processes, they are toxic at high concentrations. The purpose of the current study was to evaluate two Lactobacillus strains for their application in the bioremediation of copper and zinc from aqueous solution. The biomass of Lactobacillus fermentum and Lactobacillus plantarum were treated with different concentrations of copper or zinc (0–200 mM). Minimum inhibitory concentration, biosorption capacity and kinetic biosorption behavior were determined. The results showed rapid biosorption of both metals and both species, removed zinc ions more efficient than copper. The highest removal rate of zinc reached 84% for the L. fermentum . Moreover, Freundlich and Langmuir model indicated that L. fermentum showed a higher capability to biosorp heavy metal compared to L. plantarum . It was concluded that L. fermentum biomass, a widely available and highly efficient biosorbant, could be applied for zinc or copper bioremediation from the aquatic environment.

中文翻译:

发酵乳杆菌和植物乳杆菌对铜和锌的生物修复能力评估

一些益生菌菌株,例如乳酸杆菌属,是从食物、水和土壤中去除重金属的选择。尽管铜或锌在许多生化过程中必不可少,但它们在高浓度下是有毒的。本研究的目的是评估两种乳杆菌菌株在从水溶液中生物修复铜和锌中的应用。用不同浓度的铜或锌(0-200 mM)处理发酵乳杆菌和植物乳杆菌的生物量。测定了最小抑制浓度、生物吸附能力和动力学生物吸附行为。结果显示两种金属和两种物质的快速生物吸附,比铜更有效地去除锌离子。发酵乳杆菌对锌的最高去除率达到84%。而且,Freundlich和Langmuir模型表明发酵乳杆菌比植物乳杆菌具有更高的吸附重金属能力。结论是发酵乳生物质是一种广泛使用且高效的生物吸附剂,可用于水生环境中的锌或铜生物修复。
更新日期:2020-05-27
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