Skip to main content

Advertisement

Springer Nature is making Coronavirus research free. View research | View latest news | Sign up for updates

Table 2 Antimicrobial activity and MIC of S. nigrum, A. rusticana, and C. sativa extracts tested

From: Identification and antimicrobial activity of most representative secondary metabolites from different plant species

Bacteria S. nigrum A. rusticana C. sativa Sample #1a C. sativa Sample #2b
ZoI (mm)c MIC (mg L−1) ZoI (mm)c MIC (mg L−1) ZoI (mm)c MIC (mg L−1) ZoI (mm)c MIC (mg L−1)
Gram+
 Bacillus cereus (A1I) 15.2 ± 1.0A 5 ± 1H NI 37.0 ± 1.0C 5 ± 1H 36.5 ± 1.0C 5 ± 1H
 Bacillus thuringiensis (B7I2) 13.5 ± 0.8B 10 ± 1K NI 37.5 ± 0.9C 10 ± 1K 37.5 ± 0.7C 5 ± 1H
 Bacillus amyloliquefaciens (A5TI) 15.0 ± 0.9A 10 ± 1K NI 34.5 ± 0.9D 5 ± 1H 34.0 ± 0.9D 5 ± 1H
Gram−
 Pseudomonas orientalis (A14-1II) 13.5 ± 1.0B 10 ± 1K NI NI   NI  
 Stenotrophomonas maltophilia (B9TIII) 15.0 ± 1.0A 10 ± 1K NI NI   NI  
  1. Assays were performed in triplicate and results are the mean of three values ± standard deviation
  2. NI no inhibition zone was observed
  3. Different letters in superscript to numerical data indicate significant differences (p value < 0.05)
  4. aSample #1 is composed of flowers representative of the “Eletta campana” cannabis accession
  5. bSample #2 was obtained from a field mass selection of “Eletta campana” flowers having a higher THC and CBD content
  6. cZoI: diameter of inhibition zone obtained after 24 h of incubation in agar well diffusion assays. ZoI < 10 mm: low antimicrobial activity; 11 < ZoI < 15 mm: middle antimicrobial activity; ZoI > 16 mm: high antimicrobial activity