Study on the Structure and Bioactivity of Polysaccharides under Cassava Stalk Stress.

Various carbon sources affect the growth of the fruiting body, and the cassava stalk is considered a promising carbon source for . The composition, functional group characteristics, molecular weight distribution, antioxidant activity in vitro, and growth effect of LGG of polysaccharides (GLPs) under cassava stalk stress were investigated by gas chromatography-mass spectrometry, near-infrared spectroscopy, and gel chromatography. The results showed that GLPs consisted of D-glucose, D-galactose, and seven other monosaccharides.

Characterization of the volatile organic compounds produced from green coffee in different years by gas chromatography ion mobility spectrometry.

The effect of storage time on green coffee volatile organic compounds (VOCs) was studied by their separation head space solid-phase microextraction and identification gas chromatography-ion mobility spectrometry. In total, 38 kinds of VOCs, mainly composed of alcohols, aldehydes, esters and ketones, were identified. The fingerprint showed that the VOCs produced by green coffee in different years had obvious differences, especially, acrolein, 3-methylbutyl acetate, butanoic acid, heptan-3-ol, and so on, that could be used to predict the storage time.