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

protocatechuic adj.

Brit.

/ˌprəʊtə(ʊ)katᵻˈtʃuːɪk/

U.S.

/ˌproʊdoʊˌkædəˈtʃuɪk/

/ˌproʊdoʊˌkædəˈkjuɪk/

[compare German Protocatechusäure protocatechuic acid (A. Strecker 1861, in Ann. der Chem. u. Pharm. 118 285)] protocatechuic acid an organic acid having a structure related to, but simpler than, that of catechuic acid (catechin).Chemical name: 3,4-dihydroxybenzoic acid; C₆H₃(OH)₂COOH.

ΚΠ

1863 Philos. Trans. (Royal Soc.) 153 357 Protocatechuic acid (obtained by Strecker as a product of the action of fused potash on piperic acid).

1934 C. C. Steele Introd. Plant Biochem. vi. xviii. 187 3,4-Dihydroxybenzoic acid, or protocatechuic acid, occurs in the free state in a few plants, e.g. Onion scales.

1992 M. Ingrouille Diversity & Evol. Land Plants 279 The presence of large quantities of catechol and protocatechuic acid in the dead outer scales of especially coloured onions.

单词	protocatechuic
释义	> as lemmas protocatechuic protocatechuic adj. Brit. /ˌprəʊtə(ʊ)katᵻˈtʃuːɪk/ , U.S. /ˌproʊdoʊˌkædəˈtʃuɪk/ , /ˌproʊdoʊˌkædəˈkjuɪk/ [compare German Protocatechusäure protocatechuic acid (A. Strecker 1861, in Ann. der Chem. u. Pharm. 118 285)] protocatechuic acid an organic acid having a structure related to, but simpler than, that of catechuic acid (catechin).Chemical name: 3,4-dihydroxybenzoic acid; C₆H₃(OH)₂COOH. ΚΠ 1863 Philos. Trans. (Royal Soc.) 153 357 Protocatechuic acid (obtained by Strecker as a product of the action of fused potash on piperic acid). 1934 C. C. Steele Introd. Plant Biochem. vi. xviii. 187 3,4-Dihydroxybenzoic acid, or protocatechuic acid, occurs in the free state in a few plants, e.g. Onion scales. 1992 M. Ingrouille Diversity & Evol. Land Plants 279 The presence of large quantities of catechol and protocatechuic acid in the dead outer scales of especially coloured onions. extracted from proto-comb. form < as lemmas
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> as lemmas