Abstract
Phenolic Inhibitors of Saccharification and Fermentation in Lignocellulo-Starch Prehydrolysates and Comparative Efficacy of Detoxification Treatments
Highlights
Lignocellulosic biomass has been globally recognized as the most attractive source for bioethanol production, owing to the cheap and abundant availability
The concentration of soluble phenolic compounds in the prehydrolysates from root and vegetable processing residues subjected to steam, dilute sulphuric acid (DSA) and lime treatments was monitored and compared with that released by aqueous extraction from native biomass
Least concentration was found in the aqueous extracts from beet root peel, while very high concentration of 2.9-3.02 gallic acid equivalents (g/L) was found in ash gourd, pumpkin and vegetable banana peels
Summary
Lignocellulosic biomass has been globally recognized as the most attractive source for bioethanol production, owing to the cheap and abundant availability. The sustainable production depends on the successful overcoming of biomass recalcitrance and other technological barriers such as high enzyme costs, low conversion rate, generation of saccharification/fermentation inhibitors etc. Pretreatment of biomass is the key step to breaking biomass recalcitrance and enhancing the accessibility of cellulose to enzymatic hydrolysis [3]. Besides disrupting the crystalline structure of cellulose, pretreatment helps the lignin shield to be broken down and part of the hemicelluloses to be solubilised [4, 5]. Pretreatment operations generally adopted include steam, acid or alkaline exposures at high temperatures [4] and result in a solid fraction enriched with amorphous cellulose that is susceptible to enzymatic hydrolysis along with partially degraded lignin and a soluble prehydrolysate rich in monomeric sugars released from hemicellulose along with lignin degradation products [6]. Phenolic inhibitors are mainly formed during pretreatment from the degradation of lignin and to a
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
