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تولید اتانول ازهمی سلولز باگاس نیشکر با استفاده از مخمر پیکیا استیپیتیس

آهی, محسن ، آذین, مهرداد ، شجاع ساداتی, سید عباس ، واشقانی فراهانی, ابراهیم ، نصرتی, محسن (1391) تولید اتانول ازهمی سلولز باگاس نیشکر با استفاده از مخمر پیکیا استیپیتیس. در: The 13th Iranian & The Second International Congress of Microbiology, July 14 – 16, 2012, Ardabil - Iran.

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عنوان انگليسي

Bioethanol Production From Sugarcane Bagasse Hemicellulose Using Pichia Stipitis

خلاصه انگلیسی

Background & Objectives: Bioethanol as a renewable energy can be produced from variety of lignocellulosic feedstocks like sugarcane bagasse that is one of the most abundant sources worldwide. The sugarcane bagasse contains cellulose and hemicellulose which could be hydrolyzed to the main structural sugars, glucose and xylose. Since common ethanologenic microorganisms, such as Saccharomyces cerevisiae, could not consume xylose, it is essential to find appropriate substitutes. Among different microorganisms, Pichia stipitis is known as the best xylose fermenting yeast. In this study production of bioethanol from sugarcane bagasse hydrolysate by two different strains of this species is compared. Methods: Two strains of Pichia stipitis (PTCC5309 and PTCC5310) were examined regarding their ethanol production potencies. The ethanol production was investigated both in synthetic and sugarcane bagasse hydrolysate medium. Synthetic medium contained 3% (w/v) and 6% (w/v) xylose, while hemicellulose hydrolysate contained 3% (w/v) total reducing sugars, 2.2% (w/v) of which was pentoses. Results: Results showed that the ethanol production by PTCC5309 was higher than PTCC5310 in both 3% (w/v) and 6% (w/v) xylose containing synthetic medium. Ethanol production by this strain from 3% and 6% xylose was 6.8 and 15.17 g/l, respectively. The ethanol production by PTCC5309 in hydrolysate medium was 6.47 g/l, which was higher than 5.3 g/l produced by PTCC5310. Conclusion: The pentose fermenting yeast Pichia stipitis PTCC5309 showed to be superior for ethanol production both in synthetic xylose medium and hemicellulose hydrolysate medium as compared to PTCC5310. Since the hydrolysate medium contains some inhibitory materials, the ethanol production was less than synthetic xylose medium.

نوع سند :موضوع کنفرانس یا کارگاه (پوستر )
زبان سند : انگلیسی
نویسنده مسئول :محسن آهی
کلید واژه ها (انگلیسی):Bioethanol ; Pichia Stipitis ; Sugarcane Bagasse
موضوعات :QW میکروب شناسی و ایمنی شناسی
WD بیماریهای تغذیه و متابولیکی
بخش های دانشگاهی :معاونت تحقیقات و فناوری > مديريت تحقیقات و فناوری و اطلاع رساني > مدیریت همایش ها و کنگره های دانشگاه
کد شناسایی :5055
ارائه شده توسط : خانم صغری گلمغانی
ارائه شده در تاریخ :27 آذر 1392 13:00
آخرین تغییر :27 آذر 1392 13:00

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