Simultaneous Determination of Mineral Nutrients and Toxic Metals in M. stenopetala from Southern Ethiopia: A Comparative Study of Three Cultivating Areas Using MP-AES

Table 8

Comparison of daily intake of mineral nutrients from M. stenopetala leaves with recommended daily intake and tolerable upper limit of daily intake.

Elements	Concentration in leaf (mg kg^−1)	Amount of nutrients per 200 g of leaf consumed	Recommended daily intake [7, 50]	Upper tolerance limit [7, 50]
K	20987–22142	4200–4426.2	4700 mg	NE
Na	153–245	30.6–49	1500 mg	2300 mg/day
Ca	7842–6749	1568.4–1349.8	1000–1200 mg	2500 mg/day
Mg	7128–6425	1425.6–1285	320–420 mg	750 mg/day
Fe	157–246	31.4–49.2	10–15 mg	45 mg/day
Co	4.12–4.98	0.85–0.1	5–40 μg/day	0.25 mg/day
Mn	42.2–57.3	8.24–11.4	1.8–2.3 mg	11 mg/day
Zn	16.2–27.6	3.32–5.53	10–15 mg	40 mg/day
Cr	0.22–0.62	0.04–0.1	25–35 μg	120 μg/day
Cu	7.13–9.42	1.79–1.88	0.9–2 mg	10 mg/day

NE = not established.