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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

TreatmentExperiment numberSample typeAverage 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 irradiation1Uninoculated inflorescence6.16 ± 0.267.50
1Botrytis cinerea-inoculated inflorescence8.05 ± 0.127.51.88 ± 0.96
2Uninoculated inflorescence6.04 ± 0.088.370
2Botrytis cinerea-inoculated inflorescence7.7 ± 0.118.373.02 ± 0.11
E-beam1Uninoculated inflorescence6.16 ± 0.2610.260
1Botrytis cinerea-inoculated inflorescence8.05 ± 0.1210.260
2Uninoculated inflorescence6.04 ± 0.0810.260
2Botrytis cinerea-inoculated inflorescence7.7 ± 0.1110.261.75 ± 0.5
1Naturally infected commercial inflorescence5 ± 0.2511.990.211 ± 0.1
2Naturally infected commercial inflorescence2.2 ± 0.4711.990
1Naturally infected commercial trimmed leaves4.3 ± 0.0311.990.314 ± 0.095
2Naturally infected commercial trimmed leaves5.27 ± 0.0511.990.6 ± 0.48
Cold plasma1Uninoculated inflorescence3 ± 0.08100
2Uninoculated inflorescence2.81 ± 0.91100.25 ± 0.25
2Botrytis cinerea-inoculated inflorescence7.82 ± 0.04103.84 ± 0.08
Cold plasma with changing vacuum timea1Uninoculated inflorescence6.6 ± 0.3512.5 min + 10 min vacuum0.25 ± 0.25
1Botrytis cinerea-inoculated inflorescence6.88 ± 0.1110 min + 8 min vacuum4.05 ± 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