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Table 1 Antibacterial activity of sea cucumber S. herrmanni extracts by disk diffusion method (inhibition zone, mm)

From: Antifouling coating based on biopolymers (PCL/ PLA) and bioactive extract from the sea cucumber Stichopus herrmanni

Microorganism n-hexane extracts Ethyl acetate extracts Methanol extracts Ampicillina
Body wall Digestive tract Respiratory tree Body wall Digestive tract Respiratory tree Body wall Digestive tract Respiratory tree  
S. aureus 14.70 ± 0.26b 10.77 ± 0.33e 7.97 ± 0.21h 15.27 ± 0.26a 11.87 ± 0.29d 10.07 ± 0.17f 11.97 ± 0.21d 8.60 ± 0.33g 7.46 ± 0.21i 14.17 ± 0.13c
M. luteus 8.93 ± 0.21c 7.33 ± 0.13 f _ 11 ± 0.25b 8.47 ± 0.05d 7.33 ± 0.13f 9.03 ± 0.13c 7.97 ± 0.21e 7.43 ± 0.17f 12.07 ± 0.13 a
V. harveyi 9.37 ± 0.30 c _ _ 11.30 ± 0.25a 8.63 ± 0.26d 7.10 ± 0.08f 10.03 ± 0.21b 7.43 ± 0.25e _ 11.37 ± 0.09a
E. coli 8.30 ± 0.27c _ _ 10.50 ± 0.22b _ _ 8.23 ± 0.25c _ _ 12.23 ± 0.20a
K. pneumoniae 7.13 ± 0.11c _ _ 8.63 ± 0.27b _ _ _ _ _ 10.00 ± 0.33a
  1. Data are shown as the mean ± SD with different letters in the same row are significantly different at p < 0.05
  2. Inactive (–), weak active (< 7), moderately active (7–14); highly active (> 14)
  3. Inhibition zone includes diameter of the disc (6.4 mm)
  4. aTested at 10 µg/disc