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首页> 外文期刊>Polish Journal of Environmental Studies >Chromate-Reducing Profile of Bacterial Strains Isolated from Industrial Effluents
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Chromate-Reducing Profile of Bacterial Strains Isolated from Industrial Effluents

机译：从工业废水中分离出的细菌菌株的铬酸盐还原特性

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Initially 73 chromium(VI)-resisting bacteria were isolated from nine samples collected from three industrial cities (Kasur, Kalashahkaku, and Sialkot) of Pakistan. Eleven strains with the highest chromium resistance also were selected. Among these highly resistant selected isolates (MTC >= 250 mM), AM81 (Cellulosimicrobium cellulans) showed the highest MTC of 375 mM against Cr(VI). Biochemical characterization was used to identify the families of bacteria after initial screening. Four isolates shared origin with Staphylococcaceae three each with Promicromonosporaceae and Microbacteriaceae, and a single strain was related to Bacillales Family XII incertaesedis. 16S rRNA was used for species identification and found KM2 to be Leucobacter chironomid, KS1W; Microbacterium sp., SIS21 and KSKE42; Staphylococcus saprophyticus, SIS22; Staphylococcus sciuri, SIS51; Staphylococcus xylosus, MWM81, AM81, and KSKE3; Cellulosimicrobium cellulans, MWM82; and Microbacterium paraoxydans, KSKE41 was Exiguobacterium profundum. Strains tolerated the stress of other heavy metals (cadmium, mercury, copper, zinc, arsenic, and manganese) to variable extant along with chromium(VI). Antibiotic susceptibility was found to be more for streptomycin (10 mu g ml(-1)) and the least susceptibility was observed for kanamycin (30 mu g ml(-1)).
机译：最初从巴基斯坦三个工业城市（Kasur，Kalashahkaku和Sialkot）收集的九份样品中分离出73种抗六价铬细菌。还选择了11个具有最高耐铬性的菌株。在这些高抗性分离株中（MTC> = 250 mM），AM81（纤维素微纤维素纤维素）对Cr（VI）的MTC最高，为375 mM。初步筛选后，使用生化特性鉴定细菌家族。四株分离物与葡萄球菌科共同起源，三株分别与原微单孢菌科和微杆菌科共同存在，并且一个菌株与Bacillales Family XII incertaesedis有关。用16S rRNA进行物种鉴定，发现KM2为Chiuomid chironomid，KS1W。微量细菌，SIS21和KSKE42；腐生葡萄球菌，SIS22；葡萄球菌SIS51;葡萄球菌，MWM81，AM81和KSKE3;纤维素微纤维素纤维素，MWM82；副产氧微球菌KSKE41为深部根癌杆菌。菌株将其他重金属（镉，汞，铜，锌，砷和锰）与铬（VI）的耐受性容许到可变的现存状态。发现链霉素（10μg ml（-1））对抗生素的敏感性更高，而卡那霉素（30μg ml（-1））的抗生素敏感性最低。

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