Effect of polyethylene glycol on enzymatic hydrolysis for glucose production with different lignocellulosic substrates

The effects of polyethylene glycol( PEG) on the production of glucose from two different substrates by cellulase hydrolysis were studied.The conversion of cellulose to glucose was improved after the addition of PEG to the two substrates.The conversion rate reached maximum value when PEG concentration was 9 g / L.The promoting effect of PEG on acid-treated corn straw( increased by 30%) was greater than the acid-alkali-treated corn straw( increased by 10%).The promoting effect of PEG on saccharification was reduced when the solid content of the reaction mixture was increased or the amount of the enzyme was increased.The fermentation experiment showed that PEG had no adverse effect on yeast