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Summary Food safety
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Detailed notes on Food safety
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BLGY1211 Food safetyDeaths registered in England and Wales
Reason Male Female
Poisoning by drugs, 1,514 678
medicaments and biological
substances
4-Aminophenol derivatives 72 62
Heroin 166 25
Toxic effect of alcohol 134 60
Toxic effect of carbon 189 47
monoxide
Toxic effect of pesticides 4 2
The natural goodness of food
No human diet can be free of naturally occurring chemicals that are rodent
carcinogens of the chemicals that people eat 99.99% are natural
Some foods are always hazardous; nutmeg and mace, cassava
Conventional plant breeding can produce hazardous products;
Celery psoralens furanocoumarins
Potato solanins and glycoalkaloids bonan magnum – nausea – 11 people in
Sweden all new varieties now checked
Food safety
Risk = Hazard x Exposure
Coffee, 70mg caffeine/cup range 15-450mg/cup
300mg impairs normal function
the safe limit for pregnant women is one cup a day
100 cups is lethal
margin of exposure between exposure and risk; less than 100 if coffee drinking
acceptable bt>300,000
Basis of pharmacology – nothing is a poison, everything is a poison as it’s the dose
that makes the poison
Transgenic crops have broad potential to help the poor
Pest and disease resistance
Drought tolerance
Cold tolerance
Acid soil tolerance
Reduced fertilizer use
Nutritional benefits
Reduced land demand
Social benefits
Bt cotton and insect control in India
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