کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
685673 889047 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydrolysis of grapefruit peel waste with cellulase and pectinase enzymes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Hydrolysis of grapefruit peel waste with cellulase and pectinase enzymes
چکیده انگلیسی

Approximately 1 million metric tons of grapefruit were processed in the 2003/04 season resulting in 500,000 metric tons of peel waste. Grapefruit peel waste is usually dried, pelletized, and sold as a low-value cattle feed. This study tested different loadings of commercial cellulase and pectinase enzymes and pH levels to hydrolyze grapefruit peel waste to produce sugars. Pectinase and cellulase loadings of 0, 1, 2, 5, and 10 mg protein/g peel dry matter were tested at 45 °C. Hydrolyses were supplemented with 2.1 mg beta-glucosidase protein/g peel dry matter. Five mg pectinase/g peel dry matter and 2 mg cellulase/g peel dry matter were the lowest loadings to yield the most glucose. Optimum pH was 4.8. Cellulose, pectin, and hemicellulose in grapefruit peel waste can be hydrolyzed by pectinase and cellulase enzymes to monomer sugars, which can then be used by microorganisms to produce ethanol and other fermentation products.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 98, Issue 8, May 2007, Pages 1596–1601
نویسندگان
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