کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5012658 | 1462818 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ionic strength-response hyperbranched polyglycerol/polyacrylic acid hydrogel for the reversible immobilization of enzyme and the synthesis of biodiesel
ترجمه فارسی عنوان
هیدروژل پلی گلیسرول / پلی آکریلیک هیدروژن بیش از حد قدرت یونیک برای تحرک برگشت پذیر آنزیم و سنتز بیودیزل
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
Hyperbranched polyglycerol and acrylic acid were polymerized into smart hydrogel for enzyme immobilization. Lipase from Aspergillus oryzae was selected as model enzyme. Highest enzyme loading amount of 78.93Â mg/g and relative enzyme activity of 67.02% were observed. The immobilized enzyme was further used for the synthesis of biodiesel, and the synthesis parameters were optimized with response surface methodology. The yield of fat acid methyl esters (FAMES) under the optimum synthesis condition was determined to be 95.98%. The immobilized enzyme showed good reusability for five consecutive operations without significant loss of FAMES yield. By means of regulating the ionic strength of aqueous solution, the immobilized enzyme was successfully released from the hydrogel. After the enzyme reload, FAMES yield of fresh immobilized enzyme still remained 90% approximately for five consecutive operations. The results demonstrated that the hyperbranched polyglycerol/polyacrylic acid hydrogels could be effectively applied to the enzyme carrier and biodiesel synthesis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 144, 15 July 2017, Pages 303-311
Journal: Energy Conversion and Management - Volume 144, 15 July 2017, Pages 303-311
نویسندگان
Hao Ying, Li-feng Zhang, Di Wu, Qun-fang Lei, Yong-sheng Guo, Wen-jun Fang,