Dietary Intake of Metals from Fresh Cage-Reared Hens’ Eggs in Tenerife, Canary Islands

Table 5

Comparison of metal concentrations in eggs from cage-reared hens.

(a) Comparison of metal concentration levels in the egg whites

Metal	Giannenas et al. [42]	Alam Chowdhury et al. [48]	Demirulus [43]	This study (2015)
Cr	0.048	<LOQ	—	0.02
Cu	0.212	0.1	7.0	1.69
Fe	—	2.96	—	1.46
Mg	—	43.26	—	81.2
Ni	0.064	12.81	3.7	0.03
Pb	—	1.06	—	0.02
V	0.013	—	—	0.12
Zn	1.003	16.88	7.4	0.92

(b) Comparison of metal concentration levels in the egg yolks

Metal	Giannenas et al. [42]	Alam Chowdhury et al. [48]	Demirulus [43]	This study (2015)
Cr	0.066	<LOQ	—	0.12
Cu	1.357	0.16	10.5	3.21
Fe	—	27.27	—	18.6
Mg	—	75.96	—	31.7
Mn	0.836	—	1.9	0.36
Mo	0.26	—	—	0.07
Ni	0.063	2.79	1.7	0.07
V	0.012	—	—	0.15
Zn	20.68	81.97	35.6	14.9

(c) Comparison of metal concentrations levels in the homogenized egg

Metal	González-Weller et al. [46]	Alam Chowdhury et al. [48]	This study (2015)
Al	2.930	—	9.41
Ba	0.468	—	0.72
Cr	0.115	<LOQ	0.17
Cu	—	0.26	2.22
Fe	—	30.66	5.49
Mg	—	119.22	87.5
Ni	15.6	0.038	0.05
Pb	—	1.06	0.02
Sr	0.388	—	2.05
Zn	—	98.85	3.37