Table 3. β-Carotene content of kale under conventional and organic cultivation systems

Samples		β-carotene (μg/g)
Conventional	A	22.83±1.20^1)d2)
	B	26.28±1.43^c
	C	20.71±0.20^e
Organic	D	25.53±0.41^c
	E	29.79±0.26^b
	F	31.02±1.37^a

All values are mean±SD (n=3).
Means with different superscript letters (^a-e) in the same column are significantly different (p<0.05) by Duncan’s multiple range test.