Tefera Molla, Teklewold Almaz
Department of Chemistry, College of Natural and Computational Sciences, University of Gondar, P. O. Box 196, Gondar, Ethiopia.
Heliyon. 2021 May 14;7(5):e07048. doi: 10.1016/j.heliyon.2021.e07048. eCollection 2021 May.
A total of 144 spice samples (ajwain, black cumin, coriander and fenugreek) were collected from three districts. For the determination of heavy metals (Cd, Cr, Cu, Pb and Zn) concentrations and human health risks, the spice samples were digested in a mixture of HNO and HClO. The highest concentrations of Cr (24.85 ± 1.673 mg/kg) and Cu (32.267 ± 7.355 mg/kg) were investigated in ajwain and Zn (54.13 ± 6.122 mg/kg) in fenugreek. However, lowest concentration of Cr and Cu were detected in fenugreek; and Zn in coriander. Cd and Pb were not detected in all spice samples. A positive correlation was observed among Cr, Cu and Zn in fenugreek; Zn with Cr and Cu in black cumin and Zn with Cu in ajwain and coriander. However, negative correlation was observed Cr with Cu and Zn in ajwain and coriander; Cr with Cu in black cumin. THQ values of Cu, Zn and 75% of Cr in all spices were less than 1. About 66.7% of the HI values of the samples under study were less than 1, indicated that the consumers will not experience potential health risks from the intake of individual metals through spices consumption.
从三个地区共采集了144份香料样本（阿魏、黑孜然、芫荽和葫芦巴）。为了测定重金属（镉、铬、铜、铅和锌）浓度及对人体健康的风险，将香料样本在硝酸和高氯酸的混合液中进行消化处理。在阿魏中检测到铬的最高浓度（24.85±1.673毫克/千克）和铜的最高浓度（32.267±7.355毫克/千克），在葫芦巴中检测到锌的最高浓度（54.13±6.122毫克/千克）。然而，在葫芦巴中检测到铬和铜的最低浓度；在芫荽中检测到锌的最低浓度。在所有香料样本中均未检测到镉和铅。在葫芦巴中，铬、铜和锌之间呈正相关；在黑孜然中，锌与铬和铜呈正相关，在阿魏和芫荽中，锌与铜呈正相关。然而，在阿魏和芫荽中，铬与铜和锌呈负相关；在黑孜然中，铬与铜呈负相关。所有香料中铜、锌以及75%的铬的THQ值均小于1。所研究样本中约66.7%的HI值小于1，这表明消费者通过食用香料摄入单一金属不会面临潜在健康风险。
