کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10395485 888979 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bioconversion of crude glycerol to glycolipids in Ustilago maydis
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Bioconversion of crude glycerol to glycolipids in Ustilago maydis
چکیده انگلیسی
Ustilago maydis is known to produce glycolipid-type biosurfactants. Here, we show that U. maydis is able to efficiently convert biodiesel-derived crude glycerol to glycolipids. We have optimized the medium composition and environmental factors for bioconversion of crude glycerol to glycolipids. The synthetic medium (MinCG) contains 50 g L−1 crude glycerol and 20.3 mg L−1 ammonium citrate as the carbon and nitrogen sources, respectively. The supplementation of trace amount of amino acids, Group-B vitamins and precursors of glycolipids, mannose and erythritol, also improved the final yield. At pH 4.0 and 30 °C, 32.1 g L−1 total glycolipids was produced in a 8.2-day fed-batch bioprocess. Methanol at 2% or above severely inhibited cell growth and production of glycolipids. Our results suggest that U. maydis is an excellent host for the bioconversion of crude glycerol to value-added products.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 102, Issue 4, February 2011, Pages 3927-3933
نویسندگان
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