Table 4 Phytochemical compositions (mg∙g^− 1) of African wild lettuce leaf samples

Saponin

199.09 ± 1.29^a

68.18 ± 1.29^c

150.00 ± 1.29^b

59.09 ± 1.29^d

Tannin

57.37 ± 4.27^a

5.43 ± 0.85^c

27.17 ± 0.00^b

4.23 ± 0.85^c

Oxalate

24.45 ± 0.19^d

11.03 ± 0.32^b

20.84 ± 0.91^c

7.20 ± 0.11^a

Flavonoid

4.48 ± 0.19^b

0.42 ± 0.00^d

2.77 ± 0.32^c

13.43 ± 0.19^a

Phytate

19.86 ± 0.19^a

14.914 ± 0.12^b

15.74 ± 0.12^b

11.95 ± 0.58^c

Terpenoids

70.21 ± 1.13^a

58.38 ± 0.56^b

67.15 ± 0.94^a

51.86 ± 1.88^c

Phenol

19.47 ± 0.04^c

27.08 ± 0.04^b

15.33 ± 0.08^d

28.89 ± 0.04^a

 Phytate/calcium

0.75

0.15

0.15

0.59

 Phytate/zinc

34.93

17.49

27.68

16.35

 Phytate/iron

3.59

2.48

2.11

2.04

 Phytate/Ca & Zn

1.40

2.69

4.37

0.50