姜倩 张加研 秦永剑 刘祖广
摘要 [目的]研究HP-20大孔吸附树脂分离肉桂原花青素。[方法]采用HP-20大孔吸附树脂分离肉桂原花青素,将1 g原花青素原料溶解在少量60%乙醇中,制得的浓溶液匀速加入吸附柱中,分别用20%、40%、60%、80%、100%的乙醇对吸附在树脂上的肉桂原花青素进行梯度洗脱,并分析各部分质量、纯度以及聚合度。[结果]各部分样品分别标记为F20、F40、F60、F80、F100,五部分的质量分别为0.24、0.19、0.17、0.27、0.02 g;五部分中,纯度最高的为F40部分,纯度为82.65%,纯度最低的为F100部分,纯度为65.11%;洗脱过程中原花青素回收率达89%;分析各浓度的乙醇洗脱液中原花青素平均聚合度发现,10%~40%乙醇洗脱液中主要为低聚体,而40%~100%乙醇洗脱液中主要为高聚体。[结论]该研究为下一步肉桂原花青素高聚体的降解后的分离提供理论依据。
关键词 原花青素;大孔吸附树脂HP-20;分离;聚合度
中圖分类号 S567 文献标识码
A 文章编号 0517-6611(2014)31-10919-03
Study on the Separation of Cinnamon Proanthocyanidins by Macroporous Resin HP-20
JIANG Qian1,ZHANG Jiayan1*,QIN Yongjian1 et al (College of Material Engineering,Southwest Forestry University,Kunming,Yunnan 650224)
Abstract [Objective] The research aimed to study study the separation of proanthocyanidins by macroporous resin HP-20.[Method]The starting material 1 g of procyanidin was dissolved in a small amount of 60% ethanol,the concentrated solution was added to adsorption column in a constant speed.Ethanol concentration of 20%,40%,60%,80%,100% was selected respectively in gradient eluting by macroporous resin HP-20,and the quality,purity,and polymerization degree of all parts of the samples were analyzed.[Result]Each parts of the samples were labeled F20、F40、F60、F80、F100,the quality of five parts was 0.24 ,0.19,0.17,0.27 and 0.02 g separately.In the five parts,the highest purity was F40,and its purity is 82.65%,the lowest purity was F100,its purity was 65.11%.The recovery rate of Proanthocyandins elution was 89%.Analysis of the average polymerization degree of proanthocyanidins in the concentrations of ethanol eluate found that the 10%-40% ethanol eluate contained mainly OPC,40%-100% ethanol eluate contained mainly PPC.[Conclusion] The study provides the theoretical basis for the next study for separation of polymeric proanthocyanidins from cinnamon.
Key words Proanthocyanidins;Macroporous resin HP-20;Separation;Polymerization degree
肉桂为樟科植物肉桂的干燥树皮[1],肉桂具有解痉止痛、解热、扩张血管、抗菌、抗肿瘤及促进免疫等药理作用[2]。肉桂原产于斯里兰卡,该地产量约占世界总产量的70%,中国、东南亚以及世界许多热带地区均有栽种。我国肉桂的生产总量占世界的38.1%,主要分布于广西、云南、福建、海南等省份[3],而广西、广东两省肉桂产量占我国肉桂产量的95%以上[4]。原花青素按照聚合度的大小,通常将二~四聚体称为低聚原花青素(OPC),五聚体以上的称为多聚原花青素(PPC),OPC与PPC相比,OPC在抗氧化、酶抑制、预防心血管疾病、抗癌、抗炎止痛、止血、增进免疫调节以及促进心脏缺血后复苏、防止动脉硬化、减少对皮肤的刺激和抗糖尿病等方面有显著的生物活性[5],其在体内的抗氧化能力是VE的50倍、Vc的20倍[6]。……