Assessing sweet sorghum juice and syrup quality and fermentation efficiency

Kumar, C G and Rao, R N and Srinivasa Rao, P and Kamal, A and Ashok Kumar, A and Ravinder Reddy, Ch and Reddy, B V S (2013) Assessing sweet sorghum juice and syrup quality and fermentation efficiency. In: Developing a Sweet Sorghum Ethanol Value Chain. International Crops Research Institute for the Semi-Arid Tropics, Patancheru, Andhra Pradesh, India, pp. 172-192. ISBN 978-92-9066-555-7

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Abstract

Sweet sorghum is a C4 crop with high photosynthetic efficiency with a unique ability of high carbon assimilation (50 g m-2 day-1) and accumulates high concentrations of easily fermentable sugars (glucose, fructose and sucrose) in the stalks. Hence, it is widely believed that it is an alternate energy source that is renewable, sustainable, efficient, cost-effective, convenient and safe to use. Sucrose is the major sugar in sweet sorghum juice which constitutes up to 85% of the total sugars (Woods 2000). The sugar yields ranged between 1.6 to 13.2 Mg ha-1, with significant variations observed between years and regions (Jackson et al. 1980; Reddy et al. 2007; Zhao et al. 2009). The juice sugar content is dependent on the crop stage, because fructose is more abundant at the early development stage, whereas sucrose tends to be dominant after heading (Sipos et al. 2009). The sweet sorghum juice sugar content ranged from 10 to 25 Brix% at maturity (Reddy et al. 2007; Ritter et al. 2004). Research at the International Crops Research Institute for the Semi-Arid-Tropics (ICRISAT) showed that sweet sorghum juice yield ranges between 16.8 to 27.2 m3 ha-1 (Reddy et al. 2007) and accrues about 23% additional returns vis-à-vis grain sorghum (Rao et al. 2009).

Item Type: Book Section
Divisions: RP-Dryland Cereals
CRP: CGIAR Research Program on Dryland Cereals
Uncontrolled Keywords: Assessment, Sweet sorghum juice, Syrup quality, Fermentation efficiency
Subjects: Mandate crops > Sorghum
Depositing User: Mr Siva Shankar
Date Deposited: 24 Jan 2014 11:55
Last Modified: 19 Oct 2016 08:24
URI: http://oar.icrisat.org/id/eprint/7374
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