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International Journal of Phytomedicine and Phytotherapy

Table 2 Mineral composition of African wild lettuce leaves

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

Element or ratio WLF WLE WLR WPI
Cu 0.01 ± 0.00b 0.01 ± 0.00a 0.01 ± 0.00a 0.01 ± 0.00a
Fe 0.47 ± 0.02d 0.51 ± 0.02b 0.63 ± 0.00a 0.49 ± 0.03c
Zn 0.06 ± 0.00c 0.08 ± 0.01a 0.06 ± 0.01c 0.07 ± 0.01b
Mn 1.35 ± 0.03d 2.01 ± 0.02a 1.92 ± 0.02b 1.72 ± 0.02c
K 8.93 ± 0.22b 11.99 ± 0.32c 13.09 ± 2.02d 6.61 ± 0.12a
Na 5.36 ± 0.11b 7.56 ± 0.11a 7.78 ± 0.02a 4.04 ± 0.03b
Mg 0.74 ± 0.03d 2.54 ± 0.12b 3.10 ± 0.11a 1.86 ± 0.11c
Ca 1.61 ± 0.04c 6.15 ± 0.32b 6.31 ± 0.03a 1.22 ± 0.03d
P 13.91 ± 0.02b 10.60 ± 1.02c 15.43 ± 3.23a 9.27 ± 0.33d
Ca/P 0.12 ± 0.11a 0.58 ± 0.03a 0.41 ± 0.02a 0.13 ± 0.03a
Na/K 0.6 ± 0.01a 0.63 ± 0.02a 0.59 ± 0.03a 0.61 ± 0.01a
Zn/Cu 6.0 ± 0.03c 8.0 ± 1.16a 6.0 ± 0.02c 7.0 ± 0.02b
  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