The invention provides a preparation method of high sulfated ester brown alga polysaccharide, which belongs to the technical field of preparation of active polysaccharides. In the process of extracting polysaccharide from brown algae by traditional technology, it has many impurities, low extraction rate of polysaccharide, low purity of the product, and the decomposition of polysaccharide in the process of high temperature, strong acid or strong alkali, and the loss of the active group such as the sulfate ester group. Brown algae is used as raw material in the invention. First, the alga was crushed, the algal cells were broken, the extraction rate of polysaccharide was increased and the extraction time was reduced. Then the polysaccharide of brown algae was extracted by the water extraction method, and the polysaccharides decomposition and the activity loss of the sulfate group were reduced, and the natural composition and viability of the brown algae polysaccharide were preserved to the maximum extent. Finally, the extract was passed through three chloroacetic acid. Deproteinized and ethanol precipitated to remove alginate impurities and ethanol precipitated polysaccharides, and high purity and high sulfate group fucoidan was obtained. The purity of brown algae polysaccharides prepared by the invention can reach 60% to 70%, and the content of organic sulfate can reach 20% to 30%.
【技术实现步骤摘要】
一种高硫酸酯基褐藻多糖的制备方法
本专利技术涉及一种褐藻多糖的制备方法,属于活性多糖的制备
技术介绍
褐藻多糖又叫岩藻多糖,主要存在于褐藻和一些棘皮动物中。褐藻多糖是一种特殊的结合有硫酸基团的水溶性多糖,主要由L-岩藻糖组成,平均每个单糖上连接着一个硫酸酯基团,而影响其活性最重要的因子就是有机硫酸根和L-岩藻糖的含量。研究表明褐藻多糖具有抗凝血、抗肿瘤、抗病毒、调节血脂、增强免疫功能、抗衰老、保护机体细胞等多种生物活性,在化妆品、功能性食品和药品等行业具有极大的发展前景。现有的褐藻多糖的提取方法主要是水提法、酸提法和碱提法,一般都是将褐藻进行普通的机械破碎,然后加入纯水或酸性溶液或碱性溶液浸泡或者搅拌提取,提取条件一般是:温度80℃~90℃,提取时间4h~8h,提取次数2次~3次。传统的提取方法存在多种弊端。普通的机械粉碎达不到很好的细胞破壁效果,水提取法使得提取时间长、提取率低、多糖纯度低;而采用酸提法或碱提法,提取过程中褐藻多糖的有效活性成分和结构很容易被破坏、降解。中国专利CN1105001348公开了“一种高得率高岩藻糖比例的岩藻多糖的提取方法”,其以海蕴为原料,经高压均质、离心取上清、乙醇沉糖、过滤、干燥,得岩藻多糖,其岩藻多糖的得率在21%-35%,纯度85%-90%,其中岩藻糖含量达70%-75%,有机硫酸根含量达20%-23%。中国专利CN1105001348公开了“一种高得率高岩藻糖比例的岩藻多糖的提取方法”,其以海蕴为原料,经高压均质、离心取上清、乙醇沉糖、过滤、干燥,得岩藻多糖,其岩藻多糖的得率在21%-35%,纯度85%- ...
【技术保护点】
一种高硫酸酯基褐藻多糖的制备方法,其特征在于,所述方法为:以褐藻为原料,经超微粉碎、水提取、离心取上清、浓缩、三氯乙酸去蛋白、乙醇沉淀褐藻胶、乙醇沉糖、分离多糖、干燥、粉碎,得褐藻多糖。
【技术特征摘要】
1.一种高硫酸酯基褐藻多糖的制备方法,其特征在于,所述方法为:以褐藻为原料,经超微粉碎、水提取、离心取上清、浓缩、三氯乙酸去蛋白、乙醇沉淀褐藻胶、乙醇沉糖、分离多糖、干燥、粉碎,得褐藻多糖。2.根据权利要求1所述的方法,其特征在于,所述超微粉碎是将干燥的褐藻原料通过超微粉碎机,粉碎成粒度5~20μm的褐藻超微粉。3.根据权利要求1所述的方法,其特征在于,所述的水提取是将褐藻超微粉和纯净水按料水比(m/m)1:20~1:40混匀,在60℃~80℃搅拌提取2~6h,然后再进行离心取上清的操作。4.根据权利要求1所述的方法,其特征在于,所述的浓缩是将离心后的上清液进行减压浓缩,即在0.1MPa~0.5MPa真空度,50℃~80℃条件下将上清液浓缩至原体积的1/5~1/10。5.根据权利要求1所述的方法,其特征在于,所述的三氯乙酸去蛋白是...
【专利技术属性】
技术研发人员:包卫洋,张延胜,杨大苹,王祖哲,马普,
申请(专利权)人:大连深蓝肽科技研发有限公司,
类型:发明
国别省市:辽宁,21
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