Hui, Heping published the artcilePurification, characterization and antioxidant activities of a polysaccharide from the roots of Lilium davidii var. unicolor Cotton, Formula: C6H12O6, the main research area is Lilium root polysaccharide antioxidant; Antioxidant activity; Characterization; Lilium davidii var. unicolor Cotton; O-acetyl glucomannan; Purification.
A polysaccharide (LPR) was separated from the roots of Lilium davidii var. unicolor Cotton with hot water extraction, ethanol precipitation, and purification by anion-exchange and gel-permeation chromatog. LPR was characterized. The weight-average mol. weight (MW) of LPR was 5.12 × 104 g/moL. Glucose and mannose comprised LPR with a molar ratio of 2.9:3.3. IR, NMR and methylation anal. showed that LPR was a natural O-acetyl glucomannan, the backbone mainly contained β-(1 → 4)-linked D-glucopyranosyl and β-(1 → 4)-linked D-mannopyanosyl, and the branches probably linked at O-2 and/or O-3 of the mannosyl and glucosyl residues. The acetyl groups mainly attached at O-2 or O-3 of mannosyl residues. X-ray diffractometric (XRD) anal. and SEM (SEM) anal. revealed that LPR was a semi-crystalline substance with porous lamellar structure. Bioassays in vitro indicated that LPR had distinct scavenging activities on hydroxyl radical and DPPH radical. These findings provided a reference for functional underutilization roots of L. davidii as natural antioxidant in food and pharmaceutical industry.
International Journal of Biological Macromolecules published new progress about Lilium davidii. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Formula: C6H12O6.
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