| Beide Seiten der vorigen RevisionVorhergehende ÜberarbeitungNächste Überarbeitung | Vorhergehende Überarbeitung |
| eugenia_uniflora_l [2015/01/02 23:19] – andreas | eugenia_uniflora_l [2016/07/03 11:23] (aktuell) – andreas |
|---|
| "Extracts from pitanga leaves are considered to be effective against many diseases, and are therefore used in popular Brazilian medicines. In this study, the volatile constituents of pitanga fruits (Eugenia uniflora L.) were trapped on to Porapak-Q and eluted with ethyl acetate, and the chemical composition of the extract was analyzed by gas chromatography and gas chromatography/mass spectrometry. Fifty-four compounds were detected, and twenty-nine of those were identified by close matches with standard MS spectra. Monoterpenes (75.3% in mass) were found to comprise the largest class of the pitanga fruit volatiles, including trans-β-ocimene (36.2%), cis-ocimene (13.4%), the isomeric β-ocimene (15.4%) and β-pinene (10.3%). Several known therapeutic constituents of pitanga leaf extract, such as selina-1,3,7(11)-trien-8-one (the major constituent) were also found to be present in the fruit volatile extract, suggesting that the fruit may display therapeutic properties similar to those of the leaf extract." \\ | "Extracts from pitanga leaves are considered to be effective against many diseases, and are therefore used in popular Brazilian medicines. In this study, the volatile constituents of pitanga fruits (Eugenia uniflora L.) were trapped on to Porapak-Q and eluted with ethyl acetate, and the chemical composition of the extract was analyzed by gas chromatography and gas chromatography/mass spectrometry. Fifty-four compounds were detected, and twenty-nine of those were identified by close matches with standard MS spectra. Monoterpenes (75.3% in mass) were found to comprise the largest class of the pitanga fruit volatiles, including trans-β-ocimene (36.2%), cis-ocimene (13.4%), the isomeric β-ocimene (15.4%) and β-pinene (10.3%). Several known therapeutic constituents of pitanga leaf extract, such as selina-1,3,7(11)-trien-8-one (the major constituent) were also found to be present in the fruit volatile extract, suggesting that the fruit may display therapeutic properties similar to those of the leaf extract." \\ |
| [Volatile compounds from pitanga fruit (//Eugenia uniflora// L.)., Oliveira, A. L., Lopes, R. B., Cabral, F. A., Eberlin, M. N., Food chemistry, 99(1), 2006, 1-5] | [Volatile compounds from pitanga fruit (//Eugenia uniflora// L.)., Oliveira, A. L., Lopes, R. B., Cabral, F. A., Eberlin, M. N., Food chemistry, 99(1), 2006, 1-5] |
| | |
| | | {{:furanoelemene.jpg| furanoelemene}} \\ furanoelemene \\ (curzerene)| {{:furanodiene.jpg|furanodiene }} \\ furanodiene || {{:germacrone.jpg| germacrone}} \\ germacrone \\ //(faint sweet-woody herbaceous)//| {{:elemene_beta.jpg|β-elemene }} \\ β-elemene | |
| |
| "The leaf essential oil of Eugenia uniflora L. (Myrtaceae) was extracted by Clevenger apparatus and analysed by gas chromatography-mass spectrometry (GC-MS). The leaves were collected and immediately extracted for five consecutive days at 9:00 am and 2:00 pm. No variance in the oil yields were observed in the period. Furanodiene and its rearrangement product, furanoelemene (or curzerene, 50.2%), β-elemene (5.9%) and α-cadinol (4.7%) were identified as the most abundant compounds. \\ | "The leaf essential oil of Eugenia uniflora L. (Myrtaceae) was extracted by Clevenger apparatus and analysed by gas chromatography-mass spectrometry (GC-MS). The leaves were collected and immediately extracted for five consecutive days at 9:00 am and 2:00 pm. No variance in the oil yields were observed in the period. Furanodiene and its rearrangement product, furanoelemene (or curzerene, 50.2%), β-elemene (5.9%) and α-cadinol (4.7%) were identified as the most abundant compounds. \\ |
| [[http://www.scielo.br/scielo.php?pid=s0103-50532007000100020&script=sci_arttext]] | [[http://www.scielo.br/scielo.php?pid=s0103-50532007000100020&script=sci_arttext]] |
| |
| | {{:eugenia_uniflora.jpg?800}}\\ |
| | Eugenia uniflora (flowers and young red leaves). Location: Midway Atoll |
| | [[https://creativecommons.org/licenses/by-sa/3.0/de/|CC BY-SA 3.0]], Author: Forest & Kim Starr [[https://en.wikipedia.org/wiki/Eugenia_uniflora#/media/File:Starr_080610-8163_Eugenia_uniflora.jpg|Wikimedia Commons]] |
| |
