Human urinary excretion of L-histidine-related compounds after ingestion of several meats and fish muscle.
1. After oral administration of the muscle of skipjack tuna, about 90% of ingested anserine (Ans) was excreted quickly into urine as Ans (8%) and pi-methylHis (82%), indicating the fast decomposition of Ans into pi-methylHis. This was also the case for chicken muscle ingestion. 2. After eel muscle ingestion, carnosine (Car) excretion was only 1% of the ingested whereas almost no increase was found in His, a constituent of Car, indicating the re-utilization of this essential amino acid. Similar results were also obtained from beef and pork ingestion. 3. In all cases, the urinary excretion of these compounds reached a maximum within 7 hr after ingestion and returned to the level of meat-free diet within 40 hr.
Abe
H
H
Department of Food Science and Nutrition, Kyoritsu Women's University, Tokyo, Japan.
Okuma
E
E
Sekine
H
H
Maeda
A
A
Yoshiue
S
S
D000293:Adolescent; D000328:Adult; D000818:Animals; D002417:Cattle; D002645:Chickens; D004032:Diet; D004524:Eels; D005260:Female; D006639:Histidine / Q000652:urine*; D006801:Humans; D008460:Meat; D009132:Muscles / Q000378:metabolism*; D013552:Swine; D014413:Tuna
D006639:Histidine