TAILIEUCHUNG - The Encyclopedia Of Nutrition And Good Health - P

Bách khoa toàn thư - Dinh dưỡng và sức khỏe tốt - Vần P | P PABA para-aminobenzoic acid A bacterial growth promoter. Bacteria use PABA to manufacture folic acid. In humans and animals folacin is a b vitamin required for cell multiplication and growth humans cannot convert PABA to folacin so PABA is not a vitamin. In animals like rats and mice PABA can stimulate intestinal bacteria to produce enough folic acid to meet the animals needs. This explains why PABA was once considered a vitamin. PABA is widespread in foods grains wheat germ and organ meats are noteworthy. some people have reported that oral doses of PABA reduced hair loss and symptoms of arthritis. However if taken orally PABA may cause nausea and diarrhea. PABA can accumulate in tissues and damage the liver. Until recently PABA was a common ingredient in sunscreen to block ultraviolet radiation which ages the skin. Applied to the skin PABA can cause rash in susceptible people. When taken orally PABA may make the skin more sensitive to sunburn and increase the risk of skin cancer and it can increase bacterial resistance to sulfa drugs. PABA has been used as a pharmaceutical agent to treat rickettsial infections. Rickettsia are microorganisms that cause diseases such as typhus and Rocky Mountain spotted fever. safety data for oral use are inadequate for pregnant and breastfeeding women. See also antimetabolite ultraviolet LIGHT. packaging The container used to store and display food items. in addition to storing a food safely in the context of marketing packaging refers to the visual impact of a packaged food an important factor in sales. Many brands of food must compete with similar products on a store shelf in order to catch the consumer s eye. Food choices in . supermarkets have more than doubled during the last 20 years yet consumers spend an average of 30 minutes per visit to a supermarket the same length of time as earlier. The shapes sizes colors designs letters and pictures even the information on the food labels can prompt a shopper to buy one product

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