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Define the Absorption of Vitamin A?
Vitamin A and carotenoid tend to aggregate with lipids into globules, which then pass into the small intestine. Dietary vitamin A (retinol) is absorbed as such in the intestines. Retinyl esters (mainly palmitate) arc hydrolyzed by the combined action bile salts and the esterases in the small intestine. The released carotenoids and retino1 in the small intestine are solubilised into micelles i.e., small aggregates of mixed lipids and bile salts suspended within the gastric bolus (material taken into the body by way of. The digestive tract)solution. The micelles are absorbed into the intestinal mucosal cell. Approximately 70 to 90% of retinol from the diet is absorbed as long as the diet is adequate in fat. Carotenoid absorption from the diet ranges from about 20% to 50%, but carotenoid absorption may be as low as 5%.
Q. What is the commercial importance of algae? Numerous algae have high nutritional value and are commercialized and consumed as human food they are very popular food in the or
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Classify round worms with reasons
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What is the main difference between a bird heart and a mammalian heart? The bird heart has a one aortic arch on the right side of its body while the mammalian heart has one on
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Explain Sodium Sodium (Nu) : In sodium-restricted diets, no salt is added to the diet which still provides approximately 50 mmoL Na. Foods containing high Na content must b
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