xanthurenic acid造句

• Xanthurenic acid, two quinones and an unknown fourth compound contribute to the yellow color.
• This can be detected based on urinary excretion of xanthurenic acid after an oral tryptophan load.
• Xanthurenic acid is a metabolic intermediate that accumulates and is excreted by pyridoxine ( vitamin B 6 ) deficient animals after the ingestion of tryptophan.
• Dyer's studies with vitamin B6 included the discovery that the vitamin prevented heightened excretion of abnormal tryptophan metabolites, including xanthurenic acid, in animals that consumed the liver carcinogen N-2-fluorenylacetamide.