Cellulose enzymatic saccharification and preparation of 5-hydroxymethylfurfural based on bamboo hydrolysis residue separation in ionic liquids

Abstract

Ionic liquid/ethanol was used in bamboo hydrolysis residue (BHR) to separate lignin and cellulose.

Totally green cellulose conversion into bio-oil and cellulose citrate using molten citric acid in an open system: synthesis, characterization and computational investigation of reaction mechanisms

“…Other bands, indicating the presence of both carboxylic acids and aldehydes, are those close to 1390 cm À1 and 1427 cm À1 , characteristics of the out of plane OH bending of dimeric acids and of CH bending of aldehydes, respectively. The relatively intense signals in the 1000-1400 cm À1 range can be attributed to the COC vibrations of the furan ring generally observed for the 5-HMF, 55 whose presence is also supported by weak signals at about 1600 cm À1 due to the C-C double bond stretching vibration.…”

The Influence of Trichoderma viride Cellulase Enzyme Concentration on Saccharification of Waste Paper Materials

“…The enzyme molecule adsorbs to the cellulose's surface forming an unstable enzyme-substrate unit with the substrate further converted into reducing sugars. The adsorption quantity could also reach a maximum value when the enzyme binding to the substrate reach a saturated value producing a relative high saccharification yield, but the adsorption extent could not be increased when the cellulose is exposed to higher enzyme concentrations beyond a certain value (Kassanov et al, 2017). The highest relative percentage saccharification of newspaper was calculated at 23% when 20 mg/mL of enzyme dosage was added used for saccharification of newspaper.…”

A Sequential Autohydrolysis-Ionic Liquid Fractionation Process for High Quality Lignin Production

“…Studies have shown that washing the IL-activated biomass could dramatically improve hemicellulose conversion, since the hydrolytic enzymes are more sensitive to the presence of ionic liquids as well as to inhibitors such as humins that are generated during IL-activation. 33,34 The partial removal of hemicellulose and lignin during autohydrolysis and the structural changes undergone by cellulose during IL activation together resulted in higher carbohydrate conversion of the sequentially pretreated HP. Cellulose structure has been reported to have a significant impact on enzymatic saccharification kinetics, where cellulose II was more digestible than cellulose I.…”