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单词 polyporic
释义

polyporicadj.

Brit. /pəˈlɪpərɪk/, U.S. /pəˈlɪpərɪk/
Origin: Formed within English, by derivation; modelled on a German lexical item. Etymons: Polyporus n., -ic suffix.
Etymology: < Polyporus n. + -ic suffix, after German Polyporsäure polyporic acid (C. Stahlschmidt 1877, in Ann. der Chem. u. Pharm. 187 180).
Biochemistry.
polyporic acid n. a bronze-coloured crystalline solid, C18H12O4, which is a colouring matter found in certain fungi and lichens, and was first isolated from a fungus of the genus Polyporus; 3,6-dihydroxy-2,5-diphenyl-p-benzoquinone.
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the world > matter > chemistry > organic chemistry > acids obtained from lichens > [noun] > named
picrolichenin1835
parellic acid1850
stictic acid1868
patellaric acid1872
polyporic acid1877
vulpic acid1886
picrolichenic acid1902
1877 Jrnl. Chem. Soc. 32 ii. 620 The fungus..seems to be closely allied to Polyporus purpurascens... When brought into contact with dilute ammonia, its colour changes to a fine deep violet, and it yields a solution from which hydrochloric acid throws down a yellow precipitate of the new acid—polyporic acid.
1931 Jrnl. Amer. Chem. Soc. 53 2373 Two of the important coloring matters found in fungi are polyporic acid..obtained from Polyporous [sic] nidulans and atromentin..from Paxillus atrotomentosus.
1957 R. H. Thomson Naturally occurring Quinones ii. 26 Polyporic acid also occurs in the fungus Peniophora filamentosa..and..has been found in two lichens.
2001 Jrnl. Nat. Products 64 1230 Suillusin is suggested to be biogenerated from polyporic acid.
This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).
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adj.1877
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