Principle and application of risk assessment for food hazards

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Presentation transcript:

Principle and application of risk assessment for food hazards Mid-term exam Final exam Essay

What are hazards in food system? Physical Fish bones, nail, hair, etc… Chemical Environmental pollutants Heavy metal Polymers Pesticides Antibiotic residues Food additives (legal or illegal)

Biological Bacteria Fungi viruses Parasites Prion

Natural toxins Bacterial toxins Mycotoxins Animal toxins Plant toxins Puffer fish, cigatoxins, PSP, Plant toxins

Risk assessment Define risk, danger, and hazard Types of hazards Toxicity of the hazards Toxic dosage Concentrations of the hazards Contact and absorption pathway Food, water, air, and skin. Balance of absorption and detoxication Age, gender, body size, health status

Toxicological studies of the hazard Decide which hazard Toxicological studies of the hazard Concentrations of the hazard in food or environment Maximally possible absorption concentration The worst case scenario

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