NDLI: Bioethanol Production from Enzymatically Saccharified Sunflower Stalks Using Steam Explosion as Pretreatment

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Bioethanol Production from Enzymatically Saccharified Sunflower Stalks Using Steam Explosion as Pretreatment

Content Provider	Semantic Scholar
Author	Vaithanomsat, Pilanee Chuichulcherm, Sinsupha Apiwatanapiwat, Waraporn
Copyright Year	2009
Abstract	Sunflower stalks were analysed for chemical compositions: pentosan 15.84%, holocellulose 70.69%, alphacellulose 45.74%, glucose 27.10% and xylose 7.69% based on dry weight of 100-g raw material. The most optimum condition for steam explosion pretreatment was as follows. Sunflower stalks were cut into small pieces and soaked in 0.02 M H2SO4 for overnight. After that, they were steam exploded at 207 C and 21 kg/cm for 3 minutes to fractionate cellulose, hemicellulose and lignin. The resulting hydrolysate, containing hemicellulose, and cellulose pulp contained xylose sugar at 2.53% and 7.00%, respectively. The pulp was further subjected to enzymatic saccharification at 50 C pH 4.8 citrate buffer) with pulp/buffer 6% (w/w) and Celluclast 1.5L/pulp 2.67% (w/w) to obtain single glucose with maximum yield 11.97%. After fixed-bed fermentation under optimum condition using conventional yeast mixtures to produce bioethanol, it indicated maximum ethanol yield of 0.028 g/100 g sunflower stalk. Keywords—Enzymatic, steam explosion, sunflower stalk, ethanol production.
Starting Page	88
Ending Page	91
Page Count	4
File Format	PDF HTM / HTML
Volume Number	3
Alternate Webpage(s)	http://www.waset.org/journals/waset/v49/v49-29.pdf
Alternate Webpage(s)	https://waset.org/publications/1318/bioethanol-production-from-enzymatically-saccharified-sunflower-stalks-using-steam-explosion-as-pretreatment
Alternate Webpage(s)	http://waset.org/publications/1318/bioethanol-production-from-enzymatically-saccharified-sunflower-stalks-using-steam-explosion-as-pretreatment
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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