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Evaluating the Potential of a Solitary Enzyme ‘α-amylase’ on Saccharification of Deteriorated Rice for Bio-Ethanol Production


Sr No:
Page No: 97- 102
Language: English
Authors: Sumit Sarkar, Preeti Kaur, Prachi Vaswani* , Purna Chandra Sahu , Santosh Kumar Maitry
Received: 2025-02-26
Accepted: 2025-03-11
Published Date: 2025-03-16
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Abstract:
Rice (Oryza sativa) is a vital staple food for over half of the global population, with Chhattisgarh, India, being a significant producer often referred to as the 'Rice Bowl' of the country. Despite its large-scale production, substantial quantities of rice become deteriorated and unfit for human consumption, resulting in considerable waste. This study investigates the conversion of deteriorated rice into bioethanol as a sustainable solution to address both environmental and economic challenges. The process involves starch liquefaction, enzymatic hydrolysis, fermentation, and distillation. This manuscript focuses on optimizing the use of αamylase, a key enzyme for converting rice starch into fermentable sugars. Three varieties of deteriorated rice were evaluated, with DRS 2 showing the highest starch concentration of 73.61%. Optimal hydrolysis conditions were determined to be 8% α-amylase concentration, pH 6.5, and 90°C, which yielded 79.78% reducing sugars. Subsequent fermentation with Saccharomyces cerevisiae and a two-stage distillation process produced an ethanol yield of 22.8 grams per 100 grams of deteriorated rice. This study demonstrates that utilizing deteriorated rice for bioethanol production is a viable, cost-effective, and environmentally friendly alternative to fossil fuels. It offers a means to reduce waste, lower greenhouse gas emissions, and potentially boost local economies by providing a renewable energy source.
Keywords: Bioethanol, Single enzyme hydrolysis, Renewable energy, Waste reduction, Environment sustainability, Deteriorated rice feedstock, Saccharification, Starch Liquefaction.

Journal: IRASS Journal of Multidisciplinary Studies
ISSN(Online): 3049-0073
Publisher: IRASS Publisher
Frequency: Monthly
Language: English

Evaluating the Potential of a Solitary Enzyme ‘α-amylase’ on Saccharification of Deteriorated Rice for Bio-Ethanol Production