In order to maximize the glucose yield in the subsequent enzymatic hydrolysis, corn stalk was pretreated with sulfite to overcome the recalcitrance of lignocellulose (SPORL) under different operational conditions (pretreatment temperature, bisulfite charge, and pH). The parameters optimized included sodium bisulfite charge from 0 to 7% (w/w) on od dry (od) substrate, pretreatment temperature 16...

BACKGROUND The recalcitrance of lignocellulosic biomass is a major limitation for its conversion into biofuels by enzymatic hydrolysis. The use of a pretreatment technology is an essential step to diminish biomass recalcitrance for bioethanol production. In this study, a two-step pretreatment using hydrothermal pretreatment at various temperatures and alkali fractionation was performed on eucal...

Pretreatment and enzymatic hydrolysis play a critical role in the economic production of sugars and fuels from lignocellulosic biomass. In this study, we evaluated diverse pilot-scale pretreatments and different post-pretreatment strategies for the production of fermentable sugars from sugarcane bagasse. For the pretreatment of bagasse at pilot-scale level, steam explosion without catalyst and ...

BACKGROUND Irpex lacteus, a versatile lignin-degrading fungus with various extracellular enzymes, has been widely used for biological pretreatment. However, most studies have focused on the change of substrate structure after biological pretreatment, and the effect of these changes on the enzymatic hydrolysis, but the effect of byproducts from biological pretreatment process on subsequent enzym...

During the past decades, bioethanol becomes the best alternative to fossil fuels. Ethanol production by using edible feedstocks like sugarcane and grains became a point of concern in terms of the food supply and demand. Lignocellulosic biomass comprises non-edible feedstock opened a new method for the second-generation bioethanol production. Bioethanol production from lignocellulosic biomass is...

Seafood-based material has been impressive as a promising proteins source for food process. Hydrolysates from seafood hydrolysis, containing essential amino acids and short-chain peptides human health, are in high nutritive value. Selected properties of the hydrolysis presented this review, focusing on enzymatic acid techniques. Advantages, disadvantages optimal conditions also briefly summariz...

In this work, Eucalyptus globulus wood was pretreated under non-isothermal autohydrolysis process at 210, 220, and 230 °C, obtaining a pretreated solid with high cellulose content and a hemicellulosic liquid phase (HLP) containing mainly xylose, acetic acid, furfural, xylooligosaccharides, and phenolic compounds. The maximum concentration of xylooligosaccharides (8.97 g/L) and phenolic compound...

Thiols are important constituents of the flavour of many foods and beverages. They were produced efficiently by enzymatic hydrolysis of thioacetates, which are commercially available or easily accessible, by reaction of thioacetic acid with alkenes. Enzymatic reactions were performed in water or phosphate buffer resulting in good overall yields of the target thiols. Introduction Natural flavour...

Due to its amazing physicochemical properties and high environmental compatibility, cellulose nano-crystals (CNC) hold great promise for serving as a strategic platform for sustainable development. Now, there has been growing interest in the development of processes using waste or residual biomass as CNC source for addressing economic and environmental concerns. In the present work, a combined ...

An improved model for enzymatic hydrolysis of cellulose is developed that considers oligomer reactions with beta-glucanases, inhibition of oligomers to cellulases and enzyme decay processes during hydrolysis. Our oligomer reactions with beta-glucanases are modeled based on the enzymatic glucan chain fragmentation kinetics to describe the further fragmentation of oligomers in solution after bein...