安徽农业科学2009，Vol.37Issue(32)：15665-15666,15668,3.
马齿苋营养成分及硝酸盐含量的测定
Determination on the Nutrient Components and Nitrate Content in Portulaca oleracea L.
摘要
Abstract
[Objective]The research aimed to analyze the nutrient components and edible safety of Portulaca oleracea L.[Method]The contents of main nutrient components, amino acids, vitamins, nitrate and nitrite in the edible tender stems and leaves of wild P. oleracea were determined by using national standard method and they were compared with that in the common planting vegetables. [Result]The contents of water, crude protein, crude fat, total sugar, dietary fiber and ash in P. oleracea were 88.9%, 2.8, 0.6, 3.2, 5.6 and 1.4 g/100 g resp. Except for the content of total sugar, the contents of the other main nutrient components in P. oleracea were higher than that in the comparative vegetables. The total content of amino acids in P. oleracea was 22.23 mg/g, its total content of necessary amino acids was 8.99 mg/g and its content of aspartic acid was up to 3.24 mg/g. The contents of β-carotene and ascorbic acid in P. oleracea were higher than that in the comparative vegetables, being 199 6 μg/100 g and 24.2 mg/100 g resp. The contents of mineral elements in P. oleracea were higher than that in the comparative vegetables generally, its contents of iron and potassium were 340 and 2.1 mg/100 g resp. and its contents of lead and cadmium were only 0.08 and 0.12 mg/kg resp. The contents of nitrate and nitrite in P. oleracea were 891.8 and 0.11 mg/kg resp. [Conclusion] P. oleracea was safe, edible, green and nutritive wild vegetable with medical health function.关键词
马齿苋/营养成分/硝酸盐/测定Key words
Portulaca oleracea L./ Nutrient components/ Nitrate/ Determination分类
农业科技引用本文复制引用
周浩..马齿苋营养成分及硝酸盐含量的测定[J].安徽农业科学,2009,37(32):15665-15666,15668,3.基金项目
江苏省滩涂生物资源与环境保护重点建设实验室项目(JLCBE08010). （JLCBE08010）
