对来自印度海域红藻丝状肉膜藻（杉藻目，红藻门）的角叉菜胶进行化学研究。

Chemical investigation of carrageenan from the red alga Sarconema filiforme (Gigartinales, Rhodophyta) of Indian waters.

作者信息

Kumar Sanjay, Mehta Gaurav K, Prasad Kamalesh, Meena Ramavtar, Siddhanta Arup K

机构信息

Marine Biotechnology & Ecology Discipline, Central Salt & Marine Chemical Research Institute, Council of Scientific & Industrial Research (CSIR), G.B. Marg, Bhavnagar-364002, Gujarat, India.

出版信息

Nat Prod Commun. 2011 Sep;6(9):1327-32.

PMID:21941908

Abstract

Sulphated galactan (SF(A)) containing alpha (alpha), iota (i) and pyruvated alpha-carrageenans (17.6:18.8:25.3 mol %) was extracted and characterized from Sarconema filiforme of Indian waters. The SF(A) and its alkali modified derivative (SF(AM)) were composed of D-galactose, 3, 6-anhydro-D-galactose, 6-O-methylated-D-galactose (64.5:23.0:9.8 and 59.6:29.8:7.6 mol %) respectively. The linkage analysis, physicochemical analysis, infra red and 13C nuclear magnetic resonance spectra of SFA along with linkage analysis of the desulphated derivative (SF(D)) of SFA, reveals that it was a hybrid/combination of alpha/iota carrageenan as well as 3-linked 4',6'-O-(1-carboxyethylidene)-galactose (pyruvated alpha carrageenan) and 6-O-methylated alpha-carrageenan. The flow behavior of SF(A) obtained from rheological measurements suggested strong network formation in presence of 1% aqueous KCl and CaCl2 solutions.

摘要

从印度海域的丝状肉珊瑚中提取并表征了含有α（α）、ι（i）和丙酮酸化α-卡拉胶（17.6:18.8:25.3摩尔%）的硫酸化半乳聚糖（SF(A)）。SF(A)及其碱改性衍生物（SF(AM)）分别由D-半乳糖、3,6-脱水-D-半乳糖、6-O-甲基化-D-半乳糖组成（64.5:23.0:9.8和59.6:29.8:7.6摩尔%）。SFA的键合分析、物理化学分析、红外光谱和13C核磁共振光谱以及SFA的脱硫衍生物（SF(D)）的键合分析表明，它是α/ι卡拉胶以及3-连接的4',6'-O-(1-羧基亚乙基)-半乳糖（丙酮酸化α-卡拉胶）和6-O-甲基化α-卡拉胶的杂化/组合。流变学测量得到的SF(A)的流动行为表明，在1%的氯化钾和氯化钙水溶液中会形成强网络结构。