Chemical composition analysis of various genetically modified sorghum traits: Pretreatment process optimization and bioethanol production from hemicellulosic hydrolyzates without detoxification

摘要: Abstract Compared to other inedible agricultural based feedstocks such as corn stover, rice husk, wheat straw and sugarcane bagasse, sorghum biomass (stalks leaves) possess elevated credentials towards biofuel production which is highly tolerant against heat drought conditions. Therefore, a novel phenotype was generated through genetic mutations called “brown midrib” possesses low lignin content with enriched palatability. In the present study, chemical composition of fourteen genetically modified traits were analyzed constitute, 52.7–60% structural carbohydrates (cellulose hemicellulose) 11.6–17.7% lignin. Due presence content, pretreatment performed using energy input system achieve maximum hemicellulose hydrolysis minimized levels sugar decomposition products. As result, 88–92% attained amount furfural (0.34–0.49 g/L) 5-Hydroxymethylfurfural (0.38–0.56 g/L). Furthermore, fermentation also without detoxification derived hemicellulosic hydrolyzate evaluate effect fermentative inhibitors on ethanol-producing yeast. 88.8–92.5% ethanol conversion efficiency 0.45–0.47 (gp/gs) yield achieved within 15 h time period.