膳食纤维和伸展蛋白与矿物质结合能力的比较研究

Study on Binding Capacity of Zn^(2+) and Mg^(2+) with Dietary Fiber and Extensin from Soybean Dregs and Carrot Roots

本文主要研究了豆渣、胡萝卜水不溶性膳食纤维及其细胞壁中的伸展蛋白与矿物质(Zn2+、Mg2+)的结合能力。结果表明:豆渣膳食纤维与Zn2+、Mg2+在pH值为5.0时结合量达最大分别为1087μg/g和687μg/g,豆渣伸展蛋白与Zn2+、Mg2+在pH值为5.0时结合量达最大分别为204μg/g和147μg/g;胡萝卜膳食纤维与Zn2+、Mg2+在pH值为4.0时结合量达最大分别为1112μg/g和392μg/g,胡萝卜伸展蛋白与Zn2+、Mg2+在pH值为5.0时结合量达最大分别为124μg/g和176μg/g。

The binding capacity of Zn^2＋ and Mg^2＋ with diet fiber and extensin from the soybean dregs and carrot roots was studied in this article. The results are as follow： the maximal binding capacity of Zn^2＋ and Mg^2＋ with dietary fiber from soybean dregs is 1087μg/g and 687μg/g at pH5.0, respectively; that of Zn^2＋ and Mg^2＋ with extensin from soybean dregs 204μg/g and 147μg/g at pH5.0, respectively; that of Zn^2＋ and Mg^2＋ with dietary fiber from carrot roots 1112 μg/g and 392 μg/g at pH5.0, respectively; and that of Zn^2＋ and Mg^2＋ with extensin from carrot roots 1241μg/g and 1761μg/g at pH5.0, respectively.