英语词汇“citral a”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

Either of two isomeric terpenoid liquid aldehydes found in many plant oils, having a lemon fragrance and used in perfumery: (a) (the trans-isomer) = geranial n. (more fully citral a); (b) (the cis-isomer) = neral n. (more fully citral b). Also: a mixture of these isomers.Systematic name: 3,7-dimethylocta-2,6-dienal; (CH₃)₂C=CHCH₂CH₂C(CH₃)=CHCHO.

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citral1891

1891 Jrnl. Chem. Soc. 60 540 ‘Citral’ is the technical term applied to an ethereal oil which is contained to the extent of 6–8 per cent. in lemon oil.

1899 Pharmaceut. Jrnl. 11 Feb. 119/2 The physical characters of citral b are almost identical with those of citral a.

1907 Chem. Abstr. 1 1352 Process of manufacturing violet perfumes from citral, consisting in acting with acids upon the condensation products..from the action of citral upon halogen acetic acid esters.

1939 Thorpe's Dict. Appl. Chem. III. 183/2 Citral a. (Geranial.)..Citral b. (Neral.)... Citral is the most important natural acyclic aldehyde of the terpene series.

1964 N. G. Clark Mod. Org. Chem. x. 174 Citral, an olefinic aldehyde, occurring in lemons and other citrus fruit.

2009 New Yorker 23 Nov. 93/3 Mountain pepper, is used as a spice, but it also contains an oil that is made up largely of citral.

单词	citral a
释义	> as lemmas citral a Either of two isomeric terpenoid liquid aldehydes found in many plant oils, having a lemon fragrance and used in perfumery: (a) (the trans-isomer) = geranial n. (more fully citral a); (b) (the cis-isomer) = neral n. (more fully citral b). Also: a mixture of these isomers.Systematic name: 3,7-dimethylocta-2,6-dienal; (CH₃)₂C=CHCH₂CH₂C(CH₃)=CHCHO. ΘΚΠ the world > matter > chemistry > organic chemistry > aldehydes or alkanals > [noun] > miscellaneous named aldehydes > citral citral1891 1891 Jrnl. Chem. Soc. 60 540 ‘Citral’ is the technical term applied to an ethereal oil which is contained to the extent of 6–8 per cent. in lemon oil. 1899 Pharmaceut. Jrnl. 11 Feb. 119/2 The physical characters of citral b are almost identical with those of citral a. 1907 Chem. Abstr. 1 1352 Process of manufacturing violet perfumes from citral, consisting in acting with acids upon the condensation products..from the action of citral upon halogen acetic acid esters. 1939 Thorpe's Dict. Appl. Chem. III. 183/2 Citral a. (Geranial.)..Citral b. (Neral.)... Citral is the most important natural acyclic aldehyde of the terpene series. 1964 N. G. Clark Mod. Org. Chem. x. 174 Citral, an olefinic aldehyde, occurring in lemons and other citrus fruit. 2009 New Yorker 23 Nov. 93/3 Mountain pepper, is used as a spice, but it also contains an oil that is made up largely of citral. extracted from citraln. < as lemmas
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