Mineral composition of non-conventional leafy vegetables
Mineral composition of non-conventional leafy vegetables
复制标题
DOI：
10.1023/a:1008084007189
复制
发表时间：
1998-01-01
影响因子：
4
通讯作者：
Emmanuel, D
中科院分区：
文献类型：
--
作者：
Barminas, JT;Charles, M;Emmanuel, D
六个非传统的叶类蔬菜消费主要由农村人口的尼日利亚进行了分析的矿物质成分。矿物质含量似乎取决于蔬菜的类型。刺苋和猴面包树叶含铁量最高，分别为38.4 mg/100 g和30.6 mg/100 g dw。这些值与普通尼日利亚蔬菜相比较低，但高于其他食物来源。所有的蔬菜都含有高水平的钙比普通蔬菜，因此他们可能是这种矿物质的丰富来源。辣木、猴面包树和决明子叶片中锌含量最高，分别为25.5 mg/100 g、22.4 mg/100 g和20.9 mg/100 g干重;每一份蔬菜中的矿物质元素的浓度，这些值表明，当地蔬菜可能是有价值的和重要的贡献者在尼日利亚的农村和城市人民的饮食。磷、镁、钙、铁、铜、锌的日平均摄入量均低于推荐摄入量。然而，锰的每日摄入量被发现没有显着差异（p = 0.05）从RDA值。
Six non-conventional leafy vegetables consumed largely by the rural populace of Nigeria were analyzed for mineral composition. Mineral contents appeared to be dependent on the type of vegetables. Amaranthus spinosus and Adansonia digitata leaves contained the highest level of iron (38.4 mg/100 g and 30.6 mg/100 g dw, respectively). These values are low compared to those for common Nigerian vegetables but higher than those for other food sources. All the vegetables contained high levels of calcium compared to common vegetables, thus they could be a rich source of this mineral. Microelement content of the leaves varied appreciably. Zinc content was highest in Moringa oleifera, Adansonia digitata and Cassia tora leaves (25.5 mg/100 g, 22.4 mg/100 g and 20.9 mg/100 g dw, respectively) while the manganese content was comparatively higher in Colocasia esculenta. The concentrations of the mineral elements in the vegetables per serving portion are presented and these values indicate that the local vegetables could be valuable and important contributors in the diets of the rural and urban people of Nigeria. The mean daily intake of P, Mg, Ca, Fe, Cu and Zn were lower than their recommended dietary allowances (RDAs). However, the manganese daily intake was found not to differ significantly ( p = 0.05) from the RDA value.