کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
682169 888976 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simultaneous production of lipases and biosurfactants by submerged and solid-state bioprocesses
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Simultaneous production of lipases and biosurfactants by submerged and solid-state bioprocesses
چکیده انگلیسی

Lipases and biosurfactants are compounds produced by microorganisms generally involved in the metabolization of oil substrates. However, the relationship between the production of lipases and biosurfactants has not been established yet. Therefore, this study aimed to evaluate the correlation between production of lipases and biosurfactants by submerged (SmgB) and solid-state bioprocess (SSB) using Aspergillus spp., which were isolated from a soil contaminated by diesel oil. SSB had the highest production of lipases, with lipolytic activities of 25.22 U, while SmgB had 4.52 U. The production of biosurfactants was not observed in the SSB. In the SmgB, correlation coefficients of 91% and 87% were obtained between lipolytic activity and oil in water and water in oil emulsifying activities, respectively. A correlation of 84% was obtained between lipolytic activity and reduction of surface tension in the culture medium. The surface tension decreased from 50 to 28 mN m−1 indicating that biosurfactants were produced in the culture medium.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 101, Issue 21, November 2010, Pages 8308–8314
نویسندگان
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