Study on genotypic variation for ethanol production from sweet sorghum juice

被引：71

作者：

Ratnavathi, C. V. ^{[1
]}

Suresh, K. ^{[1
]}

Kumar, B. S. Vijay ^{[1
]}

Pallavi, M. ^{[1
]}

Komala, V. V. ^{[1
]}

Seetharama, N. ^{[1
]}

机构：

[1] Directorate Sorghum Res, Biochem Qual & Utilizat Lab, Hyderabad 500030, Andhra Pradesh, India

来源：

BIOMASS & BIOENERGY | 2010年 / 34卷 / 07期

关键词：

Sweet sorghum; Sorghum bicolor (L.) Moench; Keller; SSV; 84; Wray; NSSH; 104; BJ; 248; Ethanol; Saccharomyces cerevisiae; Fermentation; FUEL ETHANOL; FERMENTATION; SUGAR;

D O I：

10.1016/j.biombioe.2010.02.002

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Sugarcane molasses is the main source for ethanol production in India. Sweet sorghum with its juicy stem containing sugars equivalent to that of sugarcane is a very good alternative for bio-ethanol production to meet the energy needs of the country. Sweet sorghum is drought resistant, water logging resistant and saline-alkaline tolerant. Growing sweet sorghum for ethanol production is relatively easy and economical and ethanol produced from sweet sorghum is eco-friendly. In view of this, it is important to identify superior genotypes for ethanol production in terms of percent juice brix, juice extractability, total fermentable sugars, ethanol yield and fermentation efficiency. This paper presents the study on the variability observed for the production of ethanol by various sweet sorghum genotypes in a laboratory fermentor. Five Sweet Sorghum (Sorghum bicolor L. Moench) genotypes were evaluated for ethanol production from stalk juice (Keller, SSV 84, Wray, NSSH 104 and BJ 248). Sweet sorghum juice differs from cane juice mainly in its higher content of starch and aconitic acid. Data were collected for biomass yield; stalk sugar yield and ethanol production in five genotypes. Maximum ethanol production of 9.0%w/v ethanol was obtained with Keller variety (20% sugar concentration was used), and decreased for other genotypes. A distiller's strain of Saccharomyces cerevisiae (gifted by Seagram Distilleries Ltd.) was employed for fermentation. The fermentation efficiency (FE) was 94.7% for this strain. High biomass of yeast was obtained with BJ 248 variety. When the similar experiments were conducted with unsterile sweet sorghum juice (15% sugar concentration) 6.47%w/v ethanol was produced. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：947 / 952

页数：6

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