Journal de chimie physique et biophysique
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BIOETHANOL PRODUCTION FROM HUSKS OF DIFFERENT SMALL MILLETS

Ashwini R N

An experiment entitled “Bioethanol production from husks of different small millets” was conducted in the laboratory of forestry and environmental sciences. In this experiment the millet husks (foxtail millet, barnyard millet and little millet) were subjected to Six pre-treatments (Acid, Alikali, Microwave Acid, Microwave Akali, Steam Exploson, Lime, Control) enzymatic hydrolysis and fermentation. The microorganisms isolated from the spoiled fruits and millet husks were used in fermentation of millet husk. The results revealed that among six bacterial isolates, IS2 bacterial isolate(apple) has recorded highest mean population (3.6 × 104 CFU/ml). In enzymatic hydrolysis the total sugars were higher at 12 hours in autoclaved alkali barnyard millet husk (20905.36 mg/50g of feed stock) and total soluble solids was higher at 72 hours in autoclaved alkali pretreatment. Higher ethanol content during fermentation was recorded in autoclaved alkali barnyard millet husk (T17) pre-treatment at 120 hours (4018.26mg/50g feedstock). The study revealed that autoclaved alkaline pre-treatment was the best among all the other pre- treatments. However, all the three millet husks produced bioethanol, but the concentration of bioethanol observed was higher in barn yard millet husk.