The tryptophan gets converted to nicotinamide, which gets hampared in cases of Vitamin B-6 deficiency. The hereditary abnormality in metabolism of tryptophan causing deficiency of niacin, know as Hartnup disease is manifested in pellagra like skin rash, and mental deterioration, with excess tryptophan in urine 1 mg equivalent of niacin is generated for every 60 mg of trytophan. The tryptophan also forms secrotonin, a potent vasoconstrictor and stimulator of smooth muscle contraction. One 1% of tryptophan is normally converted to serotonin, but in malignant carcinoid (serotonin producing tumour cells in abdominal cavity) it could go up to 60%, affecting adversely production of nicotinic acid from trytophan, and causing negative nitrogen balance. Trytophan is obtained on eating whole grain bread, enters the brain and boosts levels of serotonin, the mood elevating brain chemical.

The tryptophan metabolites are excreted in urine and faces. Melanins are polymers of tryptophan catabolites. The tryptophan may undergo bacterial putrefaction in the intestine causing the formation of toxic substances, which then get detoxified in liver with acids.

Tryptophan works as a safe and effective food remedy for insomnia and emotional complaints. It is essential for blood clotting and digestive juices. It prevents early aging and its related effects on eye, hair, and teeth. It also acts as a natural painkiller. It slows down the rate of starch decomposition and thus prevents tooth decay. More about Tryptophan - Benefits, Dosage, Deficiency, Sources

The rice sources for tryptophan is bajra, ragi, barley, soyabean, bengal gram, knoll-khol greens, spinach, agathi, colocasia, sweet potato, cauliflower, cashew nut, mango, papaya, egg, and milk.

The RDA for children is 3.3 mg, and for adults is 3.5 mg per kg. of body weight.

Read more on Amino acid- Benefits and its functions

Find complete and updated information on amino acid, essential amino acid, amino acid supplement, 20 amino acid, amino acid structure, amino acid chain, amino acid protein, and amino acid food. Read http://www.healthvitaminsguide.com - Information on Vitamins, Minerals, Amino Acids

Dr John Anne

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