Evaluation of Essential and Nonessentials Metalsin Selected Indigenous Fruits in Dodola Woreda, Ethiopia
Résumé
Abstract Fruits are a good source of essential and nonessential metals, yet they are less consumed. In Dodola woreda various types of fruits either planted or growing wildly. Indigenous fruits are well distributed among the rural areas and members of the community lack awareness of the nutritional importance of such fruits as Rosa abyssinica and Dovyalis abyssinicafruits and therefore they do not consume well. These indigenous fruits are rich in essential and nonessential elements that help in immune boasting, destruction of free radicals and general physical growth. The main objective of the study was to evaluate essential and nonessential metals of Rosa abyssinica and Dovyalis abyssinica fruits. After sample preparation, and digestion the levels of those metals in both fruits were determined by atomic absorption spectrometry (AAS). The experimental results of each fruit, the mean concentration of essential and non-essential metals (mg/kg) in Rosa abyssinica sample exhibited decreased tend in the order of Fe (232.8 ± 0.8) > Zn (84.5 ± 1)>Mn (4.87± 0.02), Cu (56.4± 0.1), Co (0.1± 0.006), Cd, (0.027 ± 0.006) > Pb (0.07±0.006), while mean concentration for the Dovyalis abyssinica samples follow the decreasing order of Fe (273 ±1) > Zn (86.3 ±0.6)> Mn (4.92± 0.01), Cu (63.6± 0.1), Co (0.1± 0.001), Cd, (ND), Pb (ND) slightly a significant difference was observed between the mean concentrations of all metals in Rosa abyssinica and Dovyalis abyssinica fruit. This indicates that the sample contain the higher level of some selected essential metals than non-essential metals in both plants, and in the precision test, %RSD (relative standard deviation) for selected essential and non-essential metals was below the recommended level. Therefore, the content of essential and non-essential metals in both indigenous plantswere below the permissible value of WHO/FAO.4
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