Abstract
closely related to Staphylococcus xylosus ATCC 29971 T (99.11%), therefore it was identified as Staphylococcus xylosus. This strain gradually degraded various types of oils, sunflower oil, palm oil, soybean oil and rice bran oil, including cooking oil. During cultivation at room temperature for 35 days, lipase and biosurfactant activities of strain were 2 units/ml and 52 mN/m, respectively while the cleavage products were almost completely consumed. The maximal percentage of cooking oil hydrolysis by strain CH1-8 was 90% in the absence of NaCl and 60% in the presence of 10%, (w/v) NaCl. Therefore, the quality of wastewater from household will environmentally accepted after treated with strain CH1-8.
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