Table 5.

Element contents of maca samples, n = 3.

Number	Site	Element (mg kg−1 dw)
		B	Co	Cr	Cu	Li	Na	Ni	Zn
1	Shangri-la, China	13 ± 2	nd	1.4 ± 0.8	2.5 ± 1.4	0.028 ± 0.014	nd	1.4 ± 0.1	20 ± 2
2	Shangri-la, China	12 ± 1	nd	3.0 ± 2.1	7.6 ± 3.3	0.11 ± 0.02	31 ± 23	2.0 ± 0.2	25 ± 3
3	Shangri-la, China	13 ± 1	nd	1.9 ± 1.3	5.7 ± 4.2	0.047 ± 0.028	170 ± 60	0.85 ± 0.61	23 ± 1
4	Zhaotong, China	9.0 ± 1.0	nd	2.5 ± 1.8	8.1 ± 3.6	0.051 ± 0.011	190 ± 180	1.5 ± 0.9	19 ± 2
5	Zhaotong, China	20 ± 1	nd	1.4 ± 0.8	6.1 ± 1.6	0.17 ± 0.02	2600 ± 50	0.93 ± 0.21	34 ± 1
6	Zhaotong, China	21 ± 1	nd	nd	9.3 ± 1.7	0.17 ± 0.01	2400 ± 300	1.7 ± 0.4	33 ± 2
7	Dongchuan, China	12 ± 0.4	nd	3.5 ± 2.0	7.4 ± 0.9	0.085 ± 0.009	59 ± 28	1.0 ± 0.1	29 ± 1
8	Dongchuan, China	9.7 ± 0.3	nd	nd	12 ± 1	0.043 ± 0.092	100 ± 60	1.5 ± 0.4	29 ± 0.4
9	Lijiang, China	8.1 ± 0.4	nd	1.1 ± 0.9	6.9 ± 2.2	0.020 ± 0.010	nd	1.2 ± 0.3	22 ± 1
10	Lijiang, China	13 ± 1	nd	1.6 ± 0.9	31 ± 3	0.16 ± 0.09	43 ± 25	4.5 ± 0.5	39 ± 4
11	Peru	11 ± 0.1	nd	nd	nd	0.050 ± 0.010	37 ± 2	1.4 ± 0.8	27 ± 1
12	Peru	6.6 ± 0.1	nd	nd	nd	0.063 ± 0.010	nd	1.7 ± 0.02	35 ± 2
13	Peru	11 ± 0.1	nd	2.1 ± 1.7	nd	0.040 ± 0.010	41 ± 37	0.68 ± 0.14	34 ± 1
14	Peru	12 ± 0.2	nd	2.3 ± 2.1	nd	0.035 ± 0.009	nd	0.87 ± 0.09	39 ± 2

Note: samples 1–10 were from China, while samples 11–14 were from Peru. “nd” means not detected.