四川大学学报(自然科学版)
四川大學學報(自然科學版)
사천대학학보(자연과학판)
JOURNAL OF SICHUAN UNIVERSITY(NATURAL SCIENCE EDITION)
2013年
6期
1373-1378
,共6页
余梦瑶%许晓燕%江南%魏巍%伍明%罗霞
餘夢瑤%許曉燕%江南%魏巍%伍明%囉霞
여몽요%허효연%강남%위외%오명%라하
尖顶羊肚菌%胞外多糖%分离纯化%结构研究%淋巴细胞增殖
尖頂羊肚菌%胞外多糖%分離純化%結構研究%淋巴細胞增殖
첨정양두균%포외다당%분리순화%결구연구%림파세포증식
Morchella conica%extra-cellular polysaccharide%isolation%characterization%lymphocyte pro-liferation
用乙醇沉淀、Sevag法除蛋白等方法得到羊肚菌菌丝体胞外粗多糖,并进一步通过离子交换色谱、分子筛色谱对粗多糖进行分离纯化,得到单一多糖组分MEP3A .经外光谱法、紫外光谱法、核磁共振法等仪器分析方法确定该多糖组分结构为直链→6)-α-D-Man p-(1→,分子量81.2 kDa ,不含蛋白质、多肽和氨基酸.采用MTT法检测表明,该多糖组分可促进小鼠脾淋巴细胞增殖,具有免疫调节活性.
用乙醇沉澱、Sevag法除蛋白等方法得到羊肚菌菌絲體胞外粗多糖,併進一步通過離子交換色譜、分子篩色譜對粗多糖進行分離純化,得到單一多糖組分MEP3A .經外光譜法、紫外光譜法、覈磁共振法等儀器分析方法確定該多糖組分結構為直鏈→6)-α-D-Man p-(1→,分子量81.2 kDa ,不含蛋白質、多肽和氨基痠.採用MTT法檢測錶明,該多糖組分可促進小鼠脾淋巴細胞增殖,具有免疫調節活性.
용을순침정、Sevag법제단백등방법득도양두균균사체포외조다당,병진일보통과리자교환색보、분자사색보대조다당진행분리순화,득도단일다당조분MEP3A .경외광보법、자외광보법、핵자공진법등의기분석방법학정해다당조분결구위직련→6)-α-D-Man p-(1→,분자량81.2 kDa ,불함단백질、다태화안기산.채용MTT법검측표명,해다당조분가촉진소서비림파세포증식,구유면역조절활성.
The crude polysaccharides were extracted by alcohol-precipitation and deproteinized by Sevag methodfrom Morchellaconica fermentation broth .A fraction of polysaccharides (namely MEP3A) were then further purified by DEAE-cellulose ion exchange and gel permeation chromatography .The structur-al characteristicsof MEP3A was identified to an →6)-α-D-Man p-(1→ with the molecular weight of about 81 .2 kDa by HPLC-ELSD ,IR and NMR spectroscopy .It was found that MEP3Acould promote the spleen lymphocyte proliferation in a dose -dependent manner .