通江银耳多糖和胶质成分及其铁复合物的合成

Synthesis of Tongjiang Tremella Polysaccharide,Colloids and Iron Complex

以通江段木干制银耳为原料,比较银耳可溶性多糖与银耳胶质(不溶性多糖)的营养物质成分,并制备银耳多糖和银耳胶质与铁(Ⅲ)复配制成的铁复合物并比较其铁含量.以干制银耳为原料水提制备并分析银耳可溶性多糖与银耳胶质的组成;在碱性条件下分别制备铁复合物并测定其铁含量.实验结果显示:银耳多糖与胶质分别占银耳成分的5.528%和53.315%,二者与铁(Ⅲ)形成的复合物铁含量分别为3.75%和7.83%,且银耳胶质比银耳多糖更易与三氯化铁结合形成复合物;二者中的水分、灰分、还原糖、粗多糖含量相差不大,但银耳胶质中总糖(30.18%)、蛋白质(11.514%)和总膳食纤维(3.76%)显著高于银耳多糖中的对应成分(8.86%,4.588%,2.738%).

By taking the wood Tremella fuciformis Berk of Tongjiang as dry raw material and comparing the nutritional components of soluble polysaccharide and colloids(insoluble polysaccharides)in tremella fuciformis Berk,the iron complex of soluble polysaccharide and colloids with Fe(lll)was prepared,and the contents of iron complex was compared.By taking the dried Tremella fuciformis Berk as the raw material,water extraction of the soluble polysaccharide was done and the composition of both of the soluble polysaccharide and colloids were analyzed.Iron complex was prepared under alkaline condition and its iron content was determined.The results showed that the contents of soluble polysaccharide and colloids of respectively accounted for 5.528%and 53.315%.The iron contents of the complexes formed by the soluble polysaccharide and colloids with iron(III)were 3.75%and 7.83%respectively.Moreover,it was easier for colloids to form complex with iron(III)than soluble polysaccharide.The contents of water,ash,reducing sugar and crude polysaccharide in the soluble polysaccharide and colloids were not significantly different.However,sugar(30.18%),protein(11.514%)and total dietary fiber(3.76%)in colloids were significantly higher than those in soluble polysaccharides(8.86%,4.588%,2.738%).