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arbutus_unedo_l [2015/11/06 20:16]
andreas 		arbutus_unedo_l [2015/11/06 20:30]
andreas
Zeile 5: Zeile 5:
 The bark, containing up to 45% tannin, is used to tan lether. [CRC] The bark, containing up to 45% tannin, is used to tan lether. [CRC]
  
-Known as an ornamental tree in parks and gardens. The fruits are used in making preserves and jams. \\ +The main components of the volatiles of A. unedo fruits are alcohols, followed by aldehydes and esters. The main volatile compounds identified were (Z)-3-hexen-1-ol, 1-hexanol, hexanal, (E)-2-hexenal, and (Z)-3-hexenyl acetate, all with green odors. These are decreased in fully ripening state and mixed up with floral (linalool, α-terpineol) and sweet-waxy (methyl decanoate, mehtyl dodecanoate, ethyl dodecanoate) sensations. \\
-[[http://es.wikipedia.org/wiki/Arbutus_unedo]] +
- +
-The main components of the volatiles of A. unedo fruits are alcohols, followed by aldehydes and esters. The main volatile compounds identified were (Z)-3-hexen-1-ol, 1-hexanol, hexanal, (E)-2-hexenal, and (Z)-3-hexenyl acetate, all with green odors. These are decreased in fully ripening state and mixed up with floral (linalool, alpha-terpineol) and sweet-waxy (methyl decanoate, mehtyl dodecanoate, ethyl dodecanoate) sensations. \\+
 [Volatile profile of Arbutus unedo L. fruits through ripening stage., Oliveira, I., de Pinho, P.G., Malheiro, R., Baptista, P., Pereira, J.A., Food Chemistry, 128(3), 2011, 667-673] [Volatile profile of Arbutus unedo L. fruits through ripening stage., Oliveira, I., de Pinho, P.G., Malheiro, R., Baptista, P., Pereira, J.A., Food Chemistry, 128(3), 2011, 667-673]
 +
 +"... fruits of A. unedo are rarely eaten as fresh fruit as despite their pleasing appearance, the taste is not much appreciated by the consumer. So far, they are generally used for obtaining alcoholic drinks (wines, liqueurs and brandies), jams, jellies and marmalades. They can also be incorporated into yoghurts either in pieces or as flavours and be used, like other berries in confectionery such as pie and pastry fillings, cereal products, among other applications... \\
 +Strawberry tree honey is a known product of Mediterranean regions which is characterized for its “bitter taste”. Homogentisic acid (2,5-dihydroxyphenylacetic) has been considered as a chemical marker of the botanical origin of strawberry tree honey along with (±)-2-cis,4-trans-abscisic acid (c,t-ABA), (±)-2-trans, 4-trans-abscisic acid (t,t-ABA) and unedone. From the aromatic profile of strawberry tree honey from Sardinia (Italy) and Canary islands (Spain) some authors reported that norisoprenoids such as α-isophorone, β-isophorone and 4-oxoisophorone could be considered specific floral origin markers. " \\
 +[Arbutus unedo L.: Chemical and biological properties., Miguel, M.G., Faleiro, M.L., Guerreiro, A.C., Antunes, M.D., Molecules, 19(10), 2014, 15799-15823] [[http://www.mdpi.com/1420-3049/19/10/15799/htm]]
  
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 [Hager; CRC; Rimpler H, Pistor H, Z. Naturf. C, 29, (1974), 368]  [Hager; CRC; Rimpler H, Pistor H, Z. Naturf. C, 29, (1974), 368] 
  
-"Ethanol extracts of A. unedo leaves were the highest in reducing power (IC50 232.7µg/mL) and DPPH scavenging effect (IC 50 63.2 µg/mL) followed by water extracts (with IC50 of 287.7 and 73.7 µg/mL, respectively)... The leaves of Arbutus unedo L. are used as a urinary antiseptic, against diabetes, an antidiarrheal adstringent, depurative, antioxidant and as an antihypertensive. Chemical investigations of leaves and fruits indicated the presence of the essential oil, flavonoids, proanthocyanidins, iridoids glucosides, sugars non-volatile and phenolic acids and tocopherol." \\+"The leaves of Arbutus unedo L. are used as a urinary antiseptic, against diabetes, an antidiarrheal adstringent, depurative, antioxidant and as an antihypertensive. Chemical investigations of leaves and fruits indicated the presence of the essential oil, flavonoids, proanthocyanidins, iridoids glucosides, sugars non-volatile and phenolic acids and tocopherol." \\
 [Identification of Phenolic Compounds and Antimicrobial Activity of Roots of Arbutus unedo L., M.A. Dib N. Djabou, H. Allali and B. Tabti, Asian Journal of Chemistry Vol. 22, No. 5 (2010), 4045-4053] [Identification of Phenolic Compounds and Antimicrobial Activity of Roots of Arbutus unedo L., M.A. Dib N. Djabou, H. Allali and B. Tabti, Asian Journal of Chemistry Vol. 22, No. 5 (2010), 4045-4053]
  
-"The results indicated that A. unedo leaves are a potential source of natural antioxidants." \\+"Ethanol extracts of A. unedo leaves were the highest in reducing power (IC50 232.7µg/mL) and DPPH scavenging effect (IC 50 63.2 µg/mL) followed by water extracts (with IC50 of 287.7 and 73.7 µg/mL, respectively)... The results indicated that A. unedo leaves are a potential source of natural antioxidants." \\
 [Scavenging capacity of strawberry tree (Arbutus unedo L.) leaves on free radicals. Ivo Oliveira, Valentim Coelho, Raquel Baltasar, José Alberto Pereira, Paula Baptista, Food and Chemical Toxicology 47 (2009) 1507–1511] [[https://bibliotecadigital.ipb.pt/bitstream/10198/3106/3/60%20resumo.pdf]] [Scavenging capacity of strawberry tree (Arbutus unedo L.) leaves on free radicals. Ivo Oliveira, Valentim Coelho, Raquel Baltasar, José Alberto Pereira, Paula Baptista, Food and Chemical Toxicology 47 (2009) 1507–1511] [[https://bibliotecadigital.ipb.pt/bitstream/10198/3106/3/60%20resumo.pdf]]
  
arbutus_unedo_l.txt · Zuletzt geändert: 2017/10/18 14:49 von andreas

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