Paper Title:
Very High Gravity Fermentation Using Sweet Potato for Fuel Ethanol Production
  Abstract

Sweet potato (Ipomoea batatas) was a wildely planted root crop in most area of China and considered as a good feedstock for fuel ethanol production. Very high gravity ethanol fermentation technology exhibited promising industrial application for advantages including productivity improvement, polluted water output reduction and energy consumption saving. In this study very high gravity liquefied sweet potato mash containing 260 g/kg glucose (after fully saccharified) was used for fuel ethanol fermentation. 0.8 g/kg (dry matter weight) was proved as the optimum glucoamylase adding dosage in simultaneous saccharification and fermentation. Datas analysis indicated that the osmotic pressure was controlled strictly exhibited by high growth rate of yeast and high rate of ethanol formation comparing with other dosages, and 119.78 g/kg (15.07 %, v/v) ethanol equivalent to 90.16 % of theoretical yield was achieved in 64 hours.

  Info
Periodical
Advanced Materials Research (Volumes 236-238)
Edited by
Zhong Cao, Yinghe He, Lixian Sun and Xueqiang Cao
Pages
59-62
DOI
10.4028/www.scientific.net/AMR.236-238.59
Citation
Y. Shen, H. D. Zhang, X. X. Zheng, X. M. Zhang, J. S. Guo, Y. P. Chen, "Very High Gravity Fermentation Using Sweet Potato for Fuel Ethanol Production", Advanced Materials Research, Vols. 236-238, pp. 59-62, 2011
Online since
May 2011
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Price
$32.00
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