Antarctic yeasts: potential use in a biologic treatment of textile azo dyes
نویسندگان
چکیده
Abstract We investigated the dye-removal potential of a collection 61 cold-adapted yeasts from King George Island, Antarctica, on agar plates supplemented with 100 mg L –1 several textile dyes; among which isolates 81% decolorized Reactive Black 5 (RB-5), 56% decolorizing Orange 16, but only 26% doing so Blue 19 and Acid 74. Furthermore, we evaluated ligninolytic using 2,2ʹ-azino-bis(3-ethylbenzothiazoline-6-sulfonic-acid) diammonium salt-, 3,5-dimethoxy-4-hydroxybenzaldehydazine-, or manganese-supplemented detected no activity, possibly due to mechanism involving reductases. The removal kinetics were studied in liquid medium RB-5 selection 9 yeasts. highest volumetric-removal rates (η) found for Candida sake 41E (4.14 h ), Leucosporidium muscorum F20A (3.90 Cystofilobasidium infirmominiatum F13E ). Different UV–Vis spectra obtained if dye occurred by biodegradation biosorption/bioaccumulation. L. was selected study effect different chemical environmental parameters process. Optimum conditions 10 g glucose within an initial pH range 5.0 6.0. Up 700 could be removed 45 h. High-performance chromatography profiles consistent dye. Phytotoxicity estimated calculating 50%-inhibition concentration (IC 50 ) Lactuca sativa seeds. These findings propose psychrophilic as novel environmentally suitable alternative treatment dye-industry wastewaters.
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ژورنال
عنوان ژورنال: Bioresources and Bioprocessing
سال: 2022
ISSN: ['2197-4365']
DOI: https://doi.org/10.1186/s40643-022-00507-5