荸荠与黑荸荠营养成分的比较分析

将荸荠与黑荸荠烘干磨粉处理,对其营养成分测定分析,结果表明,荸荠及其黑荸荠多糖,二者均由葡萄糖、D-半乳糖、D-阿拉伯糖组成,黑荸荠中D-半乳糖含量增加；通过对氨基酸组分的分析,发现荸荠中含有11种氨基酸,黑荸荠中含有13种氨基酸,黑荸荠中氨基酸种类增加；黑荸荠中主要营养物质蛋白质、脂肪、还原糖、多糖等营养物质含量增高,主要矿物元素P、Fe、Na、Ca含量增加；功能活性物质黄酮、多酚、类黑精含量显著增加。与鲜荸荠相比,黑荸荠中营养物质和功能活性成分含量均增加,因此黑荸荠可作为荸荠的一种新的加工产品来提高其附加值。

Comparative Analysis of Nutrients in Water Chestnuts and Black Water Chestnuts

Water chestnuts and black water chestnuts were dried and milled to analysis their nutrient compositions. The results showed that polysaccharides in water chestnut and black water chestnut were composed of glucose, D-galactose, and D-arabinose, while the D-galactose content in black water chestnuts was higher. The amino acids profiles showed that water chestnuts contained 11 kinds of amino acids, and the black water chestnuts contained 13 kinds of amino acids. The main nutrients in black water chestnut were protein, fat, reducing sugar, and polysaccharides. Compared with water chestnuts, black water chestnuts contained more P, Fe, Na, and Ca, while the contents of flavonoids, polyphenols and black extracts were higher. The results showed that the nutrient and functional active components were higher in black water chestnuts, so black water chestnuts can be used as a new material to increase the added value of the products.