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Table 1 Comparison of extractants on different parameters based on a five point scale [0–4] and with different weights allocated to the different parameters. [A = results for Anthocleista grandiflora and C = results for Combretum erythrophyllum]

From: Avoiding pitfalls in determining antimicrobial activity of plant extracts and publishing the results

  weight Acetone EtOH MeOH MCW MDC Water
parameter   A C A C A C A C A C A C
quantity extracted 3 6 3 9 6 12 12 12 12 3 3 9 9
rate of extraction 3 12 15 12 12 12 12 12 12 15 15 9 9
number of compounds extracted 5 20 20 10 15 15 20 10 15 10 15 5 5
number of inhibitors extracted 5 20 20 0 10 20 15 20 20 20 15 0 0
toxicity in bioassay 4 16 16 8 8 0 0 8 8 8 8 16 16
ease of removal 5 20 20 5 5 10 10 10 10 20 20 0 0
hazardous to use 2 8 8 8 8 2 2 6 6 6 6 8 8
total   102 102 52 64 71 71 78 83 79 79 47 47
  1. Reprinted from [24] With permission of Journal of Ethnopharmacology