Wei, Ya-Nan published the artcileStructural changes for lignin from Chinese quince during the sequential fractionation of cell wall polysaccharides, Formula: C9H10O3, the main research area is Chinese quince cell wall polysaccharide sequential fractionation lignin structure; mol weight distribution.
The crosslinking between lignin and cell wall polysaccharides is one of recalcitrance to extract pectin and hemicellulose. In this work, water-, chelator-, Na2CO3-soluble pectin (WSP, CSP, NSP) and alkali-soluble hemicellulose (ASH) were sequentially removed, milled wood lignins (WMWL, CMWL, NMWL and KMWL) were isolated from Chinese quince. Quant. chem. anal. techniques (e.g., HPAEC, FT-IR, GPC, Py-GC/MS, TG and 2D NMR) were used for characterizing the lignin fractions. Results indicate that there are tight linkages between arabinose and lignin. The mol. weight and thermal stability decreased as different types of pectin (WSP, CSP and NSP) were removed. Py-GC/MS and 2D NMR data showed that the major interunit β-O-4′ aryl ether bonds of lignin (61.07%-72.53%) and the S/G ratios (0.56-2.68) were changed. It was revealed that Chinese quince pectin and hemicellulose polysaccharides have more covalent crosslinks with S-type lignin from secondary wall S2 than G-type lignin. These results will contribute to realizing the mechanisms of cell wall polysaccharides isolation and be beneficial for the potential application of Chinese quince fruits in food and other industries.
Process Biochemistry (Oxford, United Kingdom) published new progress about Chaenomeles sinensis. 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Formula: C9H10O3.
Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem