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Table 2 In vitro antifungal activity of the surfactin and rhamnolipid biosurfactant extracts (1.00 mg mL−1) against a panel of clinical and environmental fungal isolates as determined by agar disc diffusion method

From: Characterisation and antimicrobial activity of biosurfactant extracts produced by Bacillus amyloliquefaciens and Pseudomonas aeruginosa isolated from a wastewater treatment plant

Organism Antifungal zone diameter (mm)
Surfactin extract
(0.26 ± 0.09 mg mL−1)
Rhamnolipid extract
(1.12 ± 0.08 mg mL−1)
a Cryptococcus neoformans CAB1063 Inactive 13 ± 0.8
a Cryptococcus neoformans CAB1067 11.7 ± 0.5 14.3 ± 3.3
a Cryptococcus neoformans CAB1055 15.3 ± 0.5 11.3 ± 0.9
a Candida albicans 8911 13.3 ± 0.5 14.7 ± 0.5
a Candida albicans 8912 13.3 ± 0.5 11.7 ± 0.5
b Cryptococcus neoformans CAB1034 Inactive 18.3 ± 0.8
b Cryptococcus neoformans CAB831 11.7 ± 1.7 15.3 ± 1.9
b Cryptococcus neoformans CAB842 12.3 ± 0.9 Inactive
b Cryptococcus neoformans CAB844 15.3 ± 1.2 16.7 ± 1.7
b Candida albicans 1085 Inactive 14 ± 0.8
  1. The surfactin and rhamnolipid extracts were observed to be at 32.8 and 34.4% purity, respectively
  2. a Clinical strain
  3. b Environmental strain