Ishurd Omar, Ali Yousef, Wei Wanxing, Bashir Fatma, Ali Amna, Ashour Ahmed, Pan Yuanjiang
Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China.
Carbohydr Res. 2003 Jul 22;338(15):1609-12. doi: 10.1016/s0008-6215(03)00202-7.
Alkali-soluble polysaccharides, isolated from the seeds of dates, have been investigated using methylation and partial hydrolysis studies. The polysaccharides are shown to contain D-xylose and 4-O-methyl-D-glucuronic acid in a molar ratio of 5:1. An aldobiouronic acid from hemicellulose was characterized, and investigation revealed that the hemicellulose consists of a polymer of (1-->4)-linked D-xylopranosyl residues having branches of D-xylopyranosyl and 4-O-methyl-alpha-D-glucopyranosyluronic acid.
从枣种子中分离得到的碱溶性多糖，已通过甲基化和部分水解研究进行了调查。结果表明，这些多糖含有摩尔比为5:1的D-木糖和4-O-甲基-D-葡萄糖醛酸。对一种来自半纤维素的醛二糖醛酸进行了表征，研究发现该半纤维素由(1→4)连接的D-木糖吡喃糖基残基聚合物组成，具有D-木糖吡喃糖基和4-O-甲基-α-D-葡萄糖吡喃糖醛酸分支。
