carnitinen.

Brit.

/ˈkɑːnᵻtiːn/, U.S.

/ˈkɑrnəˌtin/,

/ˈkɑrnətn/

Origin: A borrowing from Latin, combined with English elements; modelled on a German lexical item. Etymons: Latin carn- , carō , -i- connective, -t- , -ine suffix⁵.

Etymology: < classical Latin carn-, carō flesh (see carnose adj.) + -i- connective + -t-, inserted for euphony + -ine suffix⁵, after German Carnitin (W. Gulewitsch & R. Krimberg 1905, in Zeitschr. f. physiol. Chem. 45 326); so called in allusion to its original discovery in meat extracts.

Biochemistry.

A compound synthesized in the liver and kidneys and involved in several metabolic processes, esp. the transport of fatty acids into the mitochondria where they are metabolized, and sometimes used as a dietary supplement.Carnitine is an optically active quaternary ammonium compound derived from lysine; only the enantiomer l-carnitine is synthesized and utilized in cells. Systematic name: 3-hydroxy-4-(trimethylazaniumyl)butanoate; C₇H₁₅NO₃.

ΚΠ

1905 Jrnl. Chem. Soc. 88 i. 726 A new base, carnitine, is precipitated by the addition of potassium bismuth iodide solution to the filtrate from the precipitation of carnosine.

1974 J. B. Finean et al. Membranes & Cellular Functions v. 76 Isolated mitochondria will only oxidize fatty acids effectively if adequate levels of carnitine are present; in extreme cases, e.g. in the mealworm, carnitine can be an essential growth factor.

2005 Men's Health (U.K. ed.) June 25/2 Carnitine, a nutrient found at its highest levels in red meat, can help relieve exercise-induced muscle soreness.

This is a new entry (OED Third Edition, September 2020; most recently modified version published online December 2021).

单词	carnitine
释义	carnitinen. Brit. /ˈkɑːnᵻtiːn/, U.S. /ˈkɑrnəˌtin/, /ˈkɑrnətn/ Origin: A borrowing from Latin, combined with English elements; modelled on a German lexical item. Etymons: Latin carn- , carō , -i- connective, -t- , -ine suffix⁵. Etymology: < classical Latin carn-, carō flesh (see carnose adj.) + -i- connective + -t-, inserted for euphony + -ine suffix⁵, after German Carnitin (W. Gulewitsch & R. Krimberg 1905, in Zeitschr. f. physiol. Chem. 45 326); so called in allusion to its original discovery in meat extracts. Biochemistry. A compound synthesized in the liver and kidneys and involved in several metabolic processes, esp. the transport of fatty acids into the mitochondria where they are metabolized, and sometimes used as a dietary supplement.Carnitine is an optically active quaternary ammonium compound derived from lysine; only the enantiomer l-carnitine is synthesized and utilized in cells. Systematic name: 3-hydroxy-4-(trimethylazaniumyl)butanoate; C₇H₁₅NO₃. ΚΠ 1905 Jrnl. Chem. Soc. 88 i. 726 A new base, carnitine, is precipitated by the addition of potassium bismuth iodide solution to the filtrate from the precipitation of carnosine. 1974 J. B. Finean et al. Membranes & Cellular Functions v. 76 Isolated mitochondria will only oxidize fatty acids effectively if adequate levels of carnitine are present; in extreme cases, e.g. in the mealworm, carnitine can be an essential growth factor. 2005 Men's Health (U.K. ed.) June 25/2 Carnitine, a nutrient found at its highest levels in red meat, can help relieve exercise-induced muscle soreness. This is a new entry (OED Third Edition, September 2020; most recently modified version published online December 2021). < n.1905
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