Application of Ficus carica L. and Solanum incanum L. Extracts in Coagulation of Milk: The Case of Traditional Practice in Ab’ala Area, Afar Regional State, Ethiopia

Table 8

Heavy metal levels in the respective plant materials determined by ICP-OES.

Metals	Metal content in samples (mg/kg)		Permissible limit (mg/kg)	Reference
	Ficus carica	Solanum incanum
Pb	ND	ND	10	[31]
Cr	^(1)0.640.01^a	^(2)0.290.02^a	1.5
Cd	^(1)0.160.01^b	^(1)0.120.01^b	0.3
Mn	^(1)3.670.10^c	^(2)0.170.03^b	200
Cu	^(1)0.380.04^d	^(1)0.330.04^a,c	10
Zn	ND	ND	50
Fe	^(1)0.620.07^a	^(2)0.250.01^a,d	20

ND: not detected. Data are expressed as a mean of three determinations ± SD. There is a significant difference in the metal contents with different-letter superscripts down a column and parenthesis-enclosed-number superscripts across a row ().