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Food-Service-Manual-for-Health-Care-Institutions

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Toxic Metals<br />

<strong>Food</strong> Safety, Sanitation, and Hazard Analysis Critical Control Points<br />

Metal poisoning includes contamination by copper, lead, zinc, cadmium, tin, arsenic, and mercury.<br />

Lead is the most common contaminant. Ceramic containers that are glazed with a leadbased<br />

paint can be hazardous <strong>for</strong> food storage if the glaze becomes chipped or deteriorates<br />

during dish washing. Lead poisoning in some areas is high, especially in drinking water (from<br />

pipes). Mercury may be used in fungicides to protect seed grains during storage. Soil may contain<br />

a high level of mercury, which can be absorbed by plants. Fish from mercury-contaminated<br />

water can contain high levels of mercury (Table 13.3).<br />

Housekeeping Products<br />

Cleaning chemicals, pot and pan dishwashing compounds, and other cleaning and sanitizing<br />

products can result in chemical food poisoning when these chemicals are not properly labeled,<br />

stored, and used. Chemicals should never be stored with food; they should especially never be<br />

stored in the food production area because many of the chemicals are white granules that have<br />

the same appearance as sugar and salt. <strong>Food</strong> handlers should always read labels and follow the<br />

material safety data sheets <strong>for</strong> proper use and storage of all chemicals.<br />

Table 13.3. Nonbacterial Illnesses of Infrequent or Rare Occurrence<br />

Name of Causative <strong>Food</strong>s How Introduced Preventive or<br />

Illness Agent Usually Involved into <strong>Food</strong> Corrective Procedures<br />

Arsenic, Insecticides Any foods Either during Thoroughly wash all<br />

fluoride, lead Rodenticides accidentally growing period fruits and vegetables<br />

poisoning contaminated or accidentally when received, store<br />

in kitchen insecticides and<br />

pesticides away from<br />

food, properly label<br />

containers, follow use<br />

instructions, use<br />

carefully, guard food<br />

from chemical<br />

contamination<br />

Copper Copper–food Acid foods and Contact between Prevent acid foods or<br />

poisoning contact surfaces carbonated metal and acid carbonated liquids<br />

liquids food or carbonated from coming into<br />

beverages contact with exposed<br />

copper<br />

Cadmium Metal plating Fruit juices, Acid foods Discontinue use of<br />

and zinc on food fruit gelatin, and dissolve cadmium cadmium-plated<br />

poisoning containers other acid foods and zinc from utensils as food<br />

stored in containers in containers; prohibit use<br />

metal-plated which they are of zinc-coated utensils<br />

containers stored <strong>for</strong> preparation,<br />

storage, and serving of<br />

acid fruits and other<br />

foods or beverages<br />

Cyanide Silver polish Any foods Failure to wash Discontinue use of<br />

poisoning accidentally and rinse polished cyanide-based silver<br />

contaminated silverware polish or wash and<br />

thoroughly rinse silverware<br />

thoroughly<br />

391

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