Shi, Xiao-Dan; Yin, Jun-Yi; Zhang, Liu-Jing; Huang, Xiao-Jun; Nie, Shao-Ping published the artcile< Studies on O-acetyl-glucomannans from Amorphophallus species: Comparison of physicochemical properties and primary structures>, Name: (2S,3S,4R,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Amorphophallus O acetylglucomannan physicochem property primary structure.
Plants in Amorphophallus genus are rich in soluble dietary fibers and have long been used as food and traditional medicine in Asian countries. In the present investigation, natural O-acetyl-glucomannans were extracted from tubers of Amorphophallus rivirei (konjac), A. albus and two local types of A. bulbifer (wild type M and wild type B), which were designated as KGM, AGM, MGM, and BGM, successively. Comparative studies were conducted on their physicochem. properties and primary structures. The four AcGMs had about 90% (weight/weight) neutral sugar, 11% (weight/weight) moisture, and 1%-2% (weight/weight) ash. Relatively high contents of acetyl groups (17%-24%, weight/weight) were detected. Mannose and glucose as the main components existed in molar ratios of 1.41, 1.41, 1.21, and 1.58 for KGM, AGM, MGM, and BGM, resp. Relative mol. weights of AcGMs increased in the order of: KGM
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