甘薯茎尖营养成分分析

以蔬菜型甘薯新品种百薯1号为材料,研究了甘薯茎尖的主要营养成分。结果表明:甘薯茎尖的食部为100%,含水量89%,蛋白质含量32g/kg,脂肪含量4g/kg,膳食纤维含量13g/kg,Vc和VB2的含量分别为400和1.4mg/kg。甘薯茎尖的矿质元素钙、钾、硒、铜含量最高,分别为1800mg/kg、4000mg/kg、20μg/kg和2.4mg/kg。磷含量620mg/kg,镁含量430mg/kg,锌含量4.6mg/kg,铁含量较少。甘薯茎尖富含人体所必需的各种氨基酸,总氨基酸含量居常见蔬菜之首。甘薯田间抗病性好,在种植过程中不需要喷施任何农药,烹饪后的菜鲜嫩清香,是一种营养丰富的绿色保健蔬菜。

Analysis on Nutrient Content of Sweet Potato

In this paper,we have analyzed the main nutrient components of sweet potato Baishu 1 Tips and the common vegetable.The nutrient contents of Baishu 1 tips were as follow:water 89 %;crude protein 3.2 %;crude fat 0.4 %;dietary fiber 1.3 %.Vitamin A and vitamin B2 were 400 mg/kg and 1.4 mg/kg.Contrast to the usual vegetable,sweet potato Baishu 1 Tips contained abundant mineral elements,the contents of Ca,K,Se,Cu,P,Mg,Zn and Fe in the tips were 1 800 mg/kg,4 00 mg/kg,20 μg/kg,1.4 mg/kg,620 mg/kg,430 mg/kg,4.6 mg/kg,8 mg/kg,respectively.The total content of Fe in the leaves was 28 mg/kg.The tips of sweet potato had all kinds of necessary amino acid.The total amount of amino acid is highest among all the vegetable samples.