Food may be
accidentally or deliberately contaminated by Physical, Chemical and
Microbiological Hazards.
Chemical hazards include environmental
contaminants; heavy metals, mycotoxins, natural toxins, improper storage, veterinary
medicines amongst.
Incidents have occurred
because of poor harvesting or storage of grain, use of banned veterinary
products, industrial discharges, human error and deliberate adulteration and
fraud. Food poisoning occurs after eating food contaminated by bacteria. The
symptoms of food poisoning are basically the same as those of stomach flu:
abdominal cramps, nausea, vomiting, diarrhea, and fever. But if your child and
other people who have eaten the same food all have the same symptoms, the
problem is more likely to be food poisoning than stomach flu.
Health Hazards due to
Pests and Pesticides
Pest such as rodents
and insects cause contamination on food. Once they get into food they consume a
lot of it. They leave filth, bodily secretions, insect, fragments and rodent
hairs as well as disease bearing and spoilage micro organism.
1. Rodent. It includes
rats and mice. A single rat voids10.000 dropping and 4 liters of urine
annually, and 5lakhs of hairs. The kidney of these rodents have anorganism
causes disease of the liver, it transmitted to man through food and water. Rats
causes 35 diseases.
2. Insects. Such as
beetles, weevils, borers, make short work of stored food like cereals, pulses
and flours. They eat up the whole grains and in this process uric acid and an
offensive odour and taste develop in the food.
3. Pesticides. Organic
pesticides like DDT, BHC, malathin, pyrethrum are used but these leave behind
on the food as a residue, the unchanged chemicals or their derivatives. These
are toxic depending on the nature of potential killers, the maximum
concentration of pesticide residue that is permitted in or on food is laid down
by the P.H.A. Acute poisoning by DDT are rare but continued consumption of
these may lead to chronic health problems.
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