Structure characteristics of a water-soluble polysaccharide purified from dragon fruit (Hylocereus undatus) pulp.
Dragon fruit is a tropical fruit with good taste. It can bring health benefits to human body. As one of the major bioactive components in this fruit, the polysaccharides might contribute to the health benefits. However, the precise structure information remains unknown. A leading polysaccharide of dragon fruit pulp, DFPP, was purified and identified by NMR and GC-MS. →4-β-d-GlcpA-1→, →6-β-d-Galp-1→ and →4-α-l-Rhap-1→ constituted the backbone and α-l-Araf-1→5-α-l-Araf-1→ formed the branch chain. The precise structure was putatively identified as below. The molecular weight was 2.2×10(3)kDa. The structure information of polysaccharides will be helpful to understand this fruit.
College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, China. Electronic address: xls@zjnu.edu.cn.
Lishan
L
Xu
College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, China.
Yaojie
Y
Zhang
College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, China.
Lizhi
L
Wang
D002240:Carbohydrate Sequence; D000073559:Caryophyllales / Q000737:chemistry*; D004040:Dietary Carbohydrates / Q000302:isolation & purification; D005638:Fruit / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D011134:Polysaccharides / Q000737:chemistry* / Q000302:isolation & purification; D014867:Water / Q000737:chemistry
D004040:Dietary Carbohydrates; D010936:Plant Extracts; D011134:Polysaccharides; D014867:Water
Dragon fruit; GC–MS; NMR; Polysaccharide; Precise structure