Synthesis of cello-oligosaccharides by depolymerization of cellulose: A review

Cello-oligosaccharides (COS) are small carbohydrate molecules derived from cellulose through partial hydrolysis. COS exert physiological influence on plants, animals and humans when externally dosed or consumed. Their potential as a prebiotic for an elicitor plants has generated interest in their synthesis purification. Currently, lack of availability, even at scales necessary research, restricted the progress this field. In review, we explore methods depolymerization with focus catalytic hydrolysis to COS. Aspects using enzymes, homogeneous catalysts heterogeneous described. Methods qualitative quantitative characterization discussed along future challenges synthesis. Role mechanocatalysis other technologies branched oligosaccharide is also explored solvent free depolymerization.