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International Journal of Phytomedicine and Phytotherapy

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

From: Nutritional, antioxidant, angiotensin-converting-enzyme and carbohydrate-hydrolyzing-enzyme inhibitory activities of underutilized leafy vegetable: African wild lettuce (Lactuca taraxacifolia Willd)

Sample WLF WLE WLR WPI
Saponin 199.09 ± 1.29a 68.18 ± 1.29c 150.00 ± 1.29b 59.09 ± 1.29d
Tannin 57.37 ± 4.27a 5.43 ± 0.85c 27.17 ± 0.00b 4.23 ± 0.85c
Oxalate 24.45 ± 0.19d 11.03 ± 0.32b 20.84 ± 0.91c 7.20 ± 0.11a
Flavonoid 4.48 ± 0.19b 0.42 ± 0.00d 2.77 ± 0.32c 13.43 ± 0.19a
Phytate 19.86 ± 0.19a 14.914 ± 0.12b 15.74 ± 0.12b 11.95 ± 0.58c
Terpenoids 70.21 ± 1.13a 58.38 ± 0.56b 67.15 ± 0.94a 51.86 ± 1.88c
Phenol 19.47 ± 0.04c 27.08 ± 0.04b 15.33 ± 0.08d 28.89 ± 0.04a
Phytate/mineral (Ca, Zn and Fe) molar ratios
 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
  1. aWLF Wild lettuce powder, WLE Wild lettuce extracts, WLR Wild lettuce residue, WPI Wild lettuce protein isolate
  2. bMeans followed by different letters are significantly different (p < 0.05) according to Duncan post-hoc test; means of three replicates ± standard deviation