Table 2.

Mineral contents of tuber of the Tropaeolum pentaphyllum Lam freeze-dried

Element	T. pentaphyllum
	Tuber
*Cd (ng/g)	24 ± 2
*Cr (ng/g)	554 ± 27
**Zn (µg/g)	23 ± 1
**Na (µg/g)	74 ± 3
**Rb (µg/g)	8.8 ± 0.5
**Cu (µg/g)	Nd
**Fe (µg/g)	Nd
**K (%)	1.14 ± 0.05
**Mg (%)	0.092 ± 0.006
***Ca (%)	0.158 ± 0.009

Mean ± SD (standard deviation) of five replicates (n = 5) by HR-CS GF AAS and mean ± SD of three replicates (n = 3) by HR-CS FAAS

Nd not detected (Fe_LOQ = 46 µg/g; Cu_LOQ = 5.2 µg/g)

* Analyzed by HR-CS GF AAS, ** Analyzed by HR-CS FAAS with air-acetylene flame, *** Analyzed by HR-CS FAAS with nitrous oxide-acetylene flame