paralacticadj.

Brit.

/ˌparəˈlaktɪk/, U.S.

/ˌpɛrəˈlæktɪk/

Origin: Formed within English, by derivation. Etymons: para- prefix¹, lactic adj.

Etymology: < para- prefix¹ + lactic adj. Compare German Para-Milchsäure paralactic acid (1863).

Biochemistry. Now rare.

paralactic acid n. a crystalline acid which occurs in tissues as a component of natural lactic acid, of which it is the dextrorotatory isomer; also called sarcolactic acid.

ΘΚΠ

the world > matter > chemistry > organic chemistry > acids obtained from animals > [noun] > in milk

galactic acid1788

lactic acid1789

paralactic acid1864

thebolactic acid1874

orotic acid1905

1864 A. Crum Brown in Trans. Royal Soc. Edinb. 23 712 Lactic acid and paralactic acid stand to one another in a relation similar to that of chloride of ethylidene and chloride of ethylene.

1877 H. Watts Fownes's Man. Chem. II. 328 Paralactic acid heated to 130° yields dilactic acid, convertible by water into ordinary lactic acid.

1912 W. Tibbles Food x. 288 This bacillus secretes enzymes..which transform the milk-sugar first into dextrose and galactose, and then into paralactic and lævolactic acid.

1955 B. C. L. Kemp Elem. Org. Chem. (new ed.) xiv. 199 Dextro-lactic acid, also known as sarcolactic or paralactic acid, can be extracted from meat-juice since it occurs in muscle.

This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022).

单词	paralactic
释义	paralacticadj. Brit. /ˌparəˈlaktɪk/, U.S. /ˌpɛrəˈlæktɪk/ Origin: Formed within English, by derivation. Etymons: para- prefix¹, lactic adj. Etymology: < para- prefix¹ + lactic adj. Compare German Para-Milchsäure paralactic acid (1863). Biochemistry. Now rare. paralactic acid n. a crystalline acid which occurs in tissues as a component of natural lactic acid, of which it is the dextrorotatory isomer; also called sarcolactic acid. ΘΚΠ the world > matter > chemistry > organic chemistry > acids obtained from animals > [noun] > in milk galactic acid1788 lactic acid1789 paralactic acid1864 thebolactic acid1874 orotic acid1905 1864 A. Crum Brown in Trans. Royal Soc. Edinb. 23 712 Lactic acid and paralactic acid stand to one another in a relation similar to that of chloride of ethylidene and chloride of ethylene. 1877 H. Watts Fownes's Man. Chem. II. 328 Paralactic acid heated to 130° yields dilactic acid, convertible by water into ordinary lactic acid. 1912 W. Tibbles Food x. 288 This bacillus secretes enzymes..which transform the milk-sugar first into dextrose and galactose, and then into paralactic and lævolactic acid. 1955 B. C. L. Kemp Elem. Org. Chem. (new ed.) xiv. 199 Dextro-lactic acid, also known as sarcolactic or paralactic acid, can be extracted from meat-juice since it occurs in muscle. This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022). < adj.1864
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