南非红卡克巴奶果的可食用果实的元素组成和营养价值以及土壤质量的影响。
Elemental composition and nutritional value of the edible fruits of Transvaal red milkwood (Mimusops zeyheri) and impact of soil quality.
机构信息
School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Private Bag X54001, University Road, Chiltern Hills, Durban, 4000, South Africa.
Council for Geoscience, Private Bag X112, Pretoria, 0001, South Africa.
出版信息
Environ Monit Assess. 2019 Feb 7;191(3):135. doi: 10.1007/s10661-019-7280-z.
Mimusops zeyheri is widely used in traditional medicine and for nourishment. Consequently, the elemental composition, including heavy metals concentrations in M. zeyheri fruits, sampled from industrial and mining areas in Gauteng and North West Province, South Africa, was determined. The results showed soil concentrations to be in decreasing order of K > Na > Ca > Mg > Fe > Al > Zn > Mn > Cu > Cr > Sr > Pb > As > Li > Ni ≈ Co > Rb > U > Bi > Ga > Be > Tl > Mo > Ba > Ag > Cd. Geoaccumulation indices showed moderate contamination by Cd that did not accumulate in the fruits whilst principal component analysis revealed metals in soils to originate from different anthropogenic sources in the area. The plant controlled uptake of metals to meet metabolic needs and levels of toxic metals was low making the fruits suitable for human consumption, even if picked from sites close to mining areas. Nutritional value of the fruits highlighted their positive contribution to the diet and showed them to be rich in Cr and Mn.
马达加斯加榄仁果在传统医学和营养方面应用广泛。因此，对采自南非豪登省和西北省工业和矿区的马达加斯加榄仁果的元素组成（包括重金属浓度）进行了测定。结果表明，土壤中的浓度按 K＞Na＞Ca＞Mg＞Fe＞Al＞Zn＞Mn＞Cu＞Cr＞Sr＞Pb＞As＞Li＞Ni≈Co＞Rb＞U＞Bi＞Ga＞Be＞Tl＞Mo＞Ba＞Ag＞Cd 的顺序递减。地质累积指数表明 Cd 存在中等程度的污染，但不会在果实中积累；主成分分析表明，土壤中的金属来源于该地区不同的人为源。植物对金属的控制吸收以满足代谢需求，且有毒金属含量较低，这使得果实适合人类食用，即使是从靠近矿区的地方采摘的。果实的营养价值突出了其对饮食的积极贡献，并表明其富含 Cr 和 Mn。
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