phlobaphenes

Lemma

phlobaphenes

Etichetta di dominio

EN

Etichetta grammaticale

n. pl.

Definizione

Flushed precipitates found in some plants that have reddish tints and this is an indication that these plants have rich concentration of condensed tannins. 1

Nota

On the other hand, condensed tannins, also known as non-hydrolysable tannins, do not split easily and hence it is difficult to analyze these. Condensed tannins are basically flavonoid dyes formed through bio-synthesis of flavins and catechins. When these non-hydrolysable tannins are heated up in acids they synthesize to yield a red insoluble substance known as tannin reds or phlobaphenes. 2

Contesto

Under the same conditions, the catechins turn into insoluble brown-black phlobaphenes that precipitate. 3

Trascrizione fonetica

UK [ˈflɒbəfiːns], US [ˈflɑbəˌfins] 4

Sinonimi e Antonimi

Synonym: tannin reds. 5

Abbreviazioni
ND
Etimologia

1862, < German Phlobaphen (C. Stähelin & J. Hofstetter in Ann. der Chem. u. Pharm. 51 (1844 ) 68 ) < ancient Greek ϕλοιός bark (see phloem n.) + βαϕή dye ( < βαϕ- , stem of βάπτειν to dip) + German -en -ene comb. form. 6

Etichetta di paese
ND
Ente

Università degli Studi di Genova, Facoltà di Lingue e Letterature Straniere

Data della scheda
Thu Dec 3 00:00:00 2009
Autore

Veronica Poggi, rev. Chiara Barbagianni

Fonti

1 : «http://www.herbs2000.com/h_menu/tannins.htm», (17/11/2011)

2 : «http://www.herbs2000.com/h_menu/tannins.htm», (17/11/2011)

3 : «http://tripstar.zapto.org/Wine/The_Winemaking_Home_Page/wineblog9.html», (17/11/2011)

4 : «http://www.oed.com/view/Entry/142548?rskey=bbSqvb&result=5&isAdvanced=false#», (17/11/2011)

5 : «http://www.herbs2000.com/h_menu/tannins.htm», (17/11/2011)

6 : «http://www.oed.com/view/Entry/142548?rskey=bbSqvb&result=5&isAdvanced=false#», (17/11/2011)

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