Inductively Coupled Plasma Optical Electro Spectroscopic Characterisation of Some Indigenous Nigerian Leafy Vegetables as Prospective Mineral Sources In Human Diets

Ogbonnaya F.C, Ukangwa N.A, Amah G,H, Oladele L.O
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Abstract

Minerals are nutrients that are needed in macro and micro amounts to guarantee proper body function. They are obtaineable from plant and natural sources. There has been continuous change in climatic conditions and this has resulted to low yield, pest infestation, loss of farm land, and concomitant low income generated from vegetables that are consumed regularly. The regular cuisines are becoming scarce and expensive with many households not aware of possible sources of suitable substitute to complement and supplement mineral requirements. This study examined the mineral composition of some indigenous leafy vegetables that can be consumed by humans as an alternate source of mineral. Colocasia esculenta (red Cocoyam), Laportea aestuans (L) (Tropical nettle weed), Daucus carota L (Carrot leaves), Manihot esculenta, Crantz (Cassava leaves) and Sesamum indicum (Sesame leaves) were collected and authenticated. Inductively coupled Plasma-Optical Emission Spectrometry was used to analyse the mineral composition of each of the leaves. Microminerals like Boron, Copper, Iron, Manganese, Silicon, and Zinc were present in amount sufficient to fufill the daily required intake when 100 g of the plant was consumed. Macrominerals like Calcium, Magnesium, Potassium, and Sodium were also observed to be in quantities able to supply the recommended daily allowance on consumption of 100 g of the plant. The plants are rich in micro and macro minerals and therefore should be explored further as prospective sources of minerals for humans.
尼日利亚一些本土叶菜作为人类膳食中潜在矿物质来源的电感耦合等离子体光电光谱特性分析
矿物质是保证人体正常功能所需的大量和微量营养素。它们可从植物和天然来源获得。气候条件不断变化,导致蔬菜产量低、虫害多、耕地减少,经常食用的蔬菜收入也随之降低。经常食用的蔬菜越来越少,而且价格昂贵,许多家庭都不知道是否有合适的替代品来补充和满足矿物质需求。这项研究考察了一些本土叶菜的矿物质成分,这些蔬菜可以作为人类矿物质的替代来源。采集并鉴定了 Colocasia esculenta(红椰菜)、Laportea aestuans (L)(热带荨麻)、Daucus carota L(胡萝卜叶)、Manihot esculenta、Crantz(木薯叶)和 Sesamum indicum(芝麻叶)。电感耦合等离子体-光发射光谱法用于分析每种叶子的矿物质成分。硼、铜、铁、锰、硅和锌等微量矿物质的含量足以满足每天食用 100 克植物所需的摄入量。据观察,钙、镁、钾和钠等宏量矿物质的含量也足以满足每天食用 100 克植物的建议摄入量。这些植物含有丰富的微量和大量矿物质,因此应将其作为人类矿物质的潜在来源加以进一步研究。
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