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Open Access Antibacterial Potential of Six Lichen Species against Enterococcus durans from Leather Industry : Evaluation of acetone extracts obtained from several lichen species as alternative natural antibacterial agents

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Antibacterial resistant bacteria are a significant problem in the hide or skin soaking process due to their destructive properties on finished leather. Lichens may be a solution to overcome this resistance problem. Enterococcus durans (99.86%) was isolated from soak liquor samples. For screening of possible antibacterial effects of lichen acetone extracts, six lichen species (Hypogymnia tubulosa, H. physodes, Evernia divaricata, Pseudevernia furfuracea, Parmelia sulcata and Usnea sp.) were examined by nine-fold dilution against E. durans. H. tubulosa, H. physodes and E. divaricata extracts showed antibacterial effects at the concentrations of 240 μg ml−1, 120 μg ml−1 and 60 μg ml−1 whereas the extracts of P. furfuracea had an antibacterial effect at 240 μg ml−1 and 120 μg ml−1. On the other hand, P. sulcata had no antibacterial effect. The most successful lichen extract was determined to be Usnea sp. at the concentrations of 240 μg ml−1, 120 μg ml−1, 60 μg ml−1, 30 μg ml−1 and 15 μg ml−1. In conclusion, lichen extracts seem to have potential antibacterial efficacies against E. durans.

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Document Type: Research Article

Affiliations: 1: Department of Biology, Faculty of Arts and Sciences, Marmara University Istanbul, Turkey 2: Biology Department, Institute of Pure and Applied Sciences, Marmara University Istanbul, Turkey

Publication date: October 1, 2020

This article was made available online on July 9, 2020 as a Fast Track article with title: "Antibacterial Potential of Six Lichen Species against Enterococcus durans from Leather Industry".

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