To evaluate the effectiveness of gamma irradiation in eliminating microbial contamination in cannabis and assess the specific risks for immunocompromised users, including potential health impacts.
Key Findings:
Gamma irradiation reduced overall microbial load but did not achieve complete sterilization, posing risks particularly for immunocompromised users.
Viable spores from mycotoxigenic fungi and residual mycotoxins were detected in irradiated samples.
Culture-based testing showed persistence of fungi like Aspergillus, Penicillium, and Fusarium after irradiation.
Molecular analyses indicated that mycotoxin-related genes remained detectable post-treatment.
ELISA alone may lack sensitivity to detect trace residues, highlighting the need for combined testing methods.
Interpretation:
The findings suggest that current sterilization practices may underestimate contamination risks, particularly for vulnerable populations such as immunocompromised individuals.
Limitations:
ELISA and mass spectrometry may not be sensitive enough when used in isolation, potentially missing other contamination types.
The study primarily focused on specific contamination types and may not encompass all potential risks, such as other pathogens.
Conclusion:
Preventing contamination during cultivation and processing is crucial for public health, and stricter safety standards for medicinal cannabis are recommended to protect vulnerable populations.
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