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Table 2 Effect of radiation and sterilization methods on fungal contamination of cannabis plant samples

From: Effects of cold plasma, gamma and e-beam irradiations on reduction of fungal colony forming unit levels in medical cannabis inflorescences

Treatment Experiment number Sample type Average CFU before treatment [log 10 CFU/g inflorescence] Radiation dose [kGy] Plasma exposure time [min] Average CFU after treatment [log 10 CFU/g inflorescence]
Gamma irradiation 1 Uninoculated inflorescence 6.16 ± 0.26 7.5 0
1 Botrytis cinerea-inoculated inflorescence 8.05 ± 0.12 7.5 1.88 ± 0.96
2 Uninoculated inflorescence 6.04 ± 0.08 8.37 0
2 Botrytis cinerea-inoculated inflorescence 7.7 ± 0.11 8.37 3.02 ± 0.11
E-beam 1 Uninoculated inflorescence 6.16 ± 0.26 10.26 0
1 Botrytis cinerea-inoculated inflorescence 8.05 ± 0.12 10.26 0
2 Uninoculated inflorescence 6.04 ± 0.08 10.26 0
2 Botrytis cinerea-inoculated inflorescence 7.7 ± 0.11 10.26 1.75 ± 0.5
1 Naturally infected commercial inflorescence 5 ± 0.25 11.99 0.211 ± 0.1
2 Naturally infected commercial inflorescence 2.2 ± 0.47 11.99 0
1 Naturally infected commercial trimmed leaves 4.3 ± 0.03 11.99 0.314 ± 0.095
2 Naturally infected commercial trimmed leaves 5.27 ± 0.05 11.99 0.6 ± 0.48
Cold plasma 1 Uninoculated inflorescence 3 ± 0.08 10 0
2 Uninoculated inflorescence 2.81 ± 0.91 10 0.25 ± 0.25
2 Botrytis cinerea-inoculated inflorescence 7.82 ± 0.04 10 3.84 ± 0.08
Cold plasma with changing vacuum timea 1 Uninoculated inflorescence 6.6 ± 0.35 12.5 min + 10 min vacuum 0.25 ± 0.25
1 Botrytis cinerea-inoculated inflorescence 6.88 ± 0.11 10 min + 8 min vacuum 4.05 ± 0.31
  1. Abbreviations: CFU colony forming units, kGy kiloGray
  2. ain the cold plasma treatment with changing vacuum time, only one experiment was conducted