title: Purification and Structural Identification of Polysaccharides from Bamboo Shoots (Dendrocalamus latiflorus).
abstract: Three kinds of polysaccharides, namely, BSP1A, BSP2A, and BSP3B, were isolated from raw bamboo shoot (Dendrocalamus latiflorus) after purification and classification by DEAE cellulose-52 (ion-exchange chromatography) and Sephadex G-50. The molecular weights of BSP1A, BSP2A, and BSP3B were 10.2, 17.0 and 20.0 kDa, respectively, which were measured through GPC (gel performance chromatography) methods. BSP1A contained arabinose, glucose, and galactose in a molar ratio of 1.0:40.6:8.7. BSP2A and BSP3B contained arabinose, xylose, glucose, and galactose in molar ratios of 6.6:1.0:5.2:10.4 and 8.5:1.0:5.1:11.1, respectively. The existence of the O-glycopeptide bond in BSP1A, BSP2A, and BSP3B was demonstrated by β-elimination reaction. FTIR spectra of the three polysaccharides showed that both BSP2A and BSP3B contained β-D-pyranose sugar rings. However, BSP1A exhibited both β-D-pyranose and α-D-pyranose sugar rings. Congo red test indicated that BSP1A and BSP2A displayed triple helix structures, but BSP3B did not. NMR spectroscopy revealed that BSP1A may exhibit a β-1,6-Glucan pyran type as the main link, and few 1,6-glycosidic galactose pyranose and arabinose bonds were connected; BSP2A mainly demonstrated → 5)β-Ara(1 → and → 3)β-Gal(1 → connection. Furthermore, BSP3B mainly presented → 3)β-Glu(1 → and → 3)β-Gal(1 → connection and may also contain few other glycosidic bonds.
authors.affiliation: College of Food Science, Southwest University, Chongqing 400715, China. j2008173@swu.edu.cn.|Chongqing Key Laboratory of Agricultural Product Processing, Southwest University, Chongqing 400715, China. j2008173@swu.edu.cn.
authors.forename: Jinsong
authors.initials: J
authors.lastname: Wu
authors.affiliation: College of Food Science, Southwest University, Chongqing 400715, China. zhengjiong248@163.com.|Chongqing Key Laboratory of Agricultural Product Processing, Southwest University, Chongqing 400715, China. zhengjiong248@163.com.
authors.forename: Jiong
authors.initials: J
authors.lastname: Zheng
authors.affiliation: College of Food Science, Southwest University, Chongqing 400715, China. xiaxuej1989@163.com.|Chongqing Key Laboratory of Agricultural Product Processing, Southwest University, Chongqing 400715, China. xiaxuej1989@163.com.
authors.forename: Xuejuan
authors.initials: X
authors.lastname: Xia
authors.affiliation: College of Food Science, Southwest University, Chongqing 400715, China. kanjianquan@163.com.|Chongqing Key Laboratory of Agricultural Product Processing, Southwest University, Chongqing 400715, China. kanjianquan@163.com.
authors.forename: Jianquan
authors.initials: J
authors.lastname: Kan
mesh_terms: D001089:Arabinose / Q000737:chemistry; D002236:Carbohydrate Conformation; D002849:Chromatography, Gas; D002850:Chromatography, Gel; D002852:Chromatography, Ion Exchange; D005690:Galactose / Q000737:chemistry; D005947:Glucose / Q000737:chemistry; D008970:Molecular Weight; D018520:Plant Shoots / Q000378:metabolism; D006109:Poaceae / Q000378:metabolism*; D011134:Polysaccharides / Q000737:chemistry* / Q000302:isolation & purification; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D011134:Polysaccharides; D001089:Arabinose; D005947:Glucose; D005690:Galactose
keywords: Dendrocalamus latiflorus; purification; structural identification