کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4514586 1322214 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bioethanol production from sweet sorghum bagasse by Mucor hiemalis
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Bioethanol production from sweet sorghum bagasse by Mucor hiemalis
چکیده انگلیسی

The present work deals with production of ethanol from sweet sorghum bagasse by a zygomycetes fungus Mucor hiemalis. The bagasse was treated with phosphoric acid and sodium hydroxide, with or without ultrasonication, prior to enzymatic hydrolysis by commercial cellulase and β-glucosidase enzymes. The phosphoric acid pretreatment was performed at 50 °C for 30 min, while the alkali treatment performed with 12% NaOH at 0 °C for 3 h. The pretreatments resulted in improving the subsequent enzymatic hydrolysis to 79–92% of the theoretical yield. The best hydrolysis performance was obtained after pretreatment by NaOH assisted with ultrasonication. The fungus showed promising results in fermentation of the hydrolyzates. In the best case, the hydrolyzate of NaOH-ultrasound pretreated bagasse followed by 24 h fermentation resulted in about 81% of the corresponding theoretical ethanol yield. Furthermore, the highest volumetric ethanol productivity was observed in the hydrolyzates of NaOH pretreated bagasse, especially after ultrasonication in pretreatment stage.

Figure optionsDownload as PowerPoint slideHighlights
► Ethanol can be successfully produced from sweet sorghum bagasse.
► A pretreatment is necessary for efficient ethanol production from bagasse.
► Sodium hydroxide and phosphoric acid treatments are suitable pretreatment processes.
► Bagasse hydrolyzates are efficiently fermented to ethanol by Mucor hiemalis.
► M. hiemalis is among the best alternatives for ethanol production from hydrolyzates.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Industrial Crops and Products - Volume 34, Issue 1, July 2011, Pages 1219–1225
نویسندگان
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