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Water unextractable polysaccharide from bran of a Chinese black-grained wheat variety was isolated with saturated barium hydroxide as extraction medium. The fraction composed mainly of arabinose (36.53%) and xylose (61.31%), indicating the presence of pure arabinoxylans. The arabinoxylan isolates exhibited the high average molecular weight (Mw) of 3.81×10 5 and an intermediate Ara/Xyl (A/X)...
The structure of the pectic polysaccharide (ASP3) isolated from roots of Angelica sinensis (Oliv.) Diels was investigated using partial acid hydrolysis, enzymic digestion combined with methylation analysis, and further supported by 1 H and 13 C NMR spectroscopy techniques. The results indicated that ASP3 contained a backbone of linear homogalacturonan fragments as “smooth regions”...
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