Table 4
Mineral contents of Korean and Chinese buckwheats (mg/100 g samples)

Minerals	Korean		Chinese
	Common buckwheat	Tartary buckwheat	Common buckwheat	Tartary buckwheat
Ca	38.9±2.29	60.5±0.55	38.4±0.43	34.1±0.53
Cu	0.4±0.00	0.5±0.00	0.8±0.01	0.5±0.01
Fe	5.3±0.02	27.9±0.70	5.5±0.17	8.8±0.08
K	461.7±0.93	423.7±6.43	569.4±5.04	498.3±8.39
Mg	203.8±2.16	181.8±4.85	255.9±2.47	234.2±9.27
Mn	1.2±0.02	1.4±0.01	2.1±0.02	2.1±0.00
Na	3.3±0.18	3.3±0.01	3.4±0.01	4.1±0.07
P	364.6±16.31	328.6±3.11	555.0±7.98	451.8±6.61
Zn	1.8±0.04	3.0±0.02	6.2±0.01	3.6±0.01