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Principle Of Sterilization

Utilizing Gamma rays emitted by Cobalt-60 (Co-60), this highly penetrating ionizing radiation disrupts microbial DNA and cellular structures to achieve reliable terminal sterilization.

Co-60 Source
1. Co-60 Radiation Source
Cobalt-60 emits high-energy
Gamma rays (γ-rays).
Gamma Radiation
2. Gamma Ray Emission
Highly penetrating ionizing radiation
penetrates packaging and products.
Product Irradiation
3. Product Irradiation
Rays uniformly penetrate product volume,
acting directly upon microorganisms.
Cellular Damage
4. DNA & Cellular Damage
Disrupts microbial DNA and
vital cellular structures.
Sterilization Achieved
5. Sterilization Achieved
Eliminates microbial bioburden to ensure total product sterility and safety.

Dual Inactivation Mechanisms of Gamma Rays on Microorganisms

Direct Action
Direct Action Direct Effect of Gamma Radiation

Gamma photons act directly upon microbial DNA, inducing molecular strand breaks and structural lesions that prevent cellular replication and inactivate pathogens.

Indirect Action
Indirect Action Indirect Effect of Gamma Radiation

Ionizing radiation interacts with intracellular water molecules via radiolysis, generating reactive free radicals (e.g., ·OH, H·, H₂O₂) that oxidize vital DNA, proteins, and cellular membranes to destroy microorganisms.

Key Characteristics of Gamma Irradiation Sterilization

High Penetration
High Penetration
Gamma rays exhibit exceptional penetration depth, penetrating dense products and primary/secondary packaging effortlessly.
Ambient Temperature Process
Ambient Temperature Process
Cold sterilization process that does not rely on elevated temperatures or high pressure, preserving heat-sensitive materials.
Zero Residual Radioactivity
Zero Residual Radioactivity
The process induces no radioactivity within products, ensuring complete consumer safety and zero post-irradiation quarantine delays.
Terminal Packaging Treatment
Terminal Packaging Treatment
Sterilization is performed directly in final sealed packaging (cartons/pallets), preventing post-process contamination across diverse packaging formats.
High Penetration • Terminal Sealed Packaging Sterilization • Zero Chemical Residues • Ambient Temperature Process