Chitosan oligosaccharide is a class of oligomers formed by hydrolysis of chitosan. It is an alkaline oligosaccharide with the advantages of small relative molecular weight, low toxicity, good water solubility and strong absorption. Chitosan oligosaccharide is an important plant system-acquired disease resistance inducer, and has the effect of inhibiting virus infection in plant disease control.Continue reading “Chitosan oligosaccharide”