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Vorhergehende Überarbeitung
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syzygium_aromaticum_l._merr._et_perry [2019/02/17 10:55]
andreas |
syzygium_aromaticum_l._merr._et_perry [2022/01/15 09:42] (aktuell)
andreas |
| "In clove essential oil, five compounds were identified as representing 98.5% of the total. The predominant compounds were eugenol (85.5%), β-caryophyllene (10.54%), α-humulene (3.12%), δ-cadinene (0.29%) and caryophyllene oxide (0.20%). Raina et al. 31 found 16 compounds, the main components being eugenol (94%) and β-caryophyllene (2.9%), while Zapata and Meireles reported that eugenol (58.62%), [[http://www.thegoodscentscompany.com/data/rw1005011.html|eugenyl acetate]] (19.58%), β-caryophyllene (19.87%) and α-humulene (1.60%) were the major constituents. Kwang and Shibamoto reported that eugenol and eugenyl acetate were the major constituents of clove essential oils made from buds which agree with the results obtained in this study, except in the case of eugenyl acetate, which was not found. The yield and quality of the essential oil depends on the part of the plant used, the predominant compounds in essential oil from clove stems being eugenol (83-92%), β-caryophyllene (4-12%), eugenyl acetate (0.5-4%), while the predominant compounds in the essential oil obtained from leaves are eugenol (80-92%), β-caryophyllene (4-17%) and eugenyl acetate (0.2-4%). The predominant compounds in the essential oil of clove buds are eugenol (75-87%), β-caryophyllene (2-7%) and eugenyl acetate (8-15%)." \\ | "In clove essential oil, five compounds were identified as representing 98.5% of the total. The predominant compounds were eugenol (85.5%), β-caryophyllene (10.54%), α-humulene (3.12%), δ-cadinene (0.29%) and caryophyllene oxide (0.20%). Raina et al. 31 found 16 compounds, the main components being eugenol (94%) and β-caryophyllene (2.9%), while Zapata and Meireles reported that eugenol (58.62%), [[http://www.thegoodscentscompany.com/data/rw1005011.html|eugenyl acetate]] (19.58%), β-caryophyllene (19.87%) and α-humulene (1.60%) were the major constituents. Kwang and Shibamoto reported that eugenol and eugenyl acetate were the major constituents of clove essential oils made from buds which agree with the results obtained in this study, except in the case of eugenyl acetate, which was not found. The yield and quality of the essential oil depends on the part of the plant used, the predominant compounds in essential oil from clove stems being eugenol (83-92%), β-caryophyllene (4-12%), eugenyl acetate (0.5-4%), while the predominant compounds in the essential oil obtained from leaves are eugenol (80-92%), β-caryophyllene (4-17%) and eugenyl acetate (0.2-4%). The predominant compounds in the essential oil of clove buds are eugenol (75-87%), β-caryophyllene (2-7%) and eugenyl acetate (8-15%)." \\ |
| [Chemical Composition of the Essential Oils Obtained From Some Spices Widely Used in Mediterranean Region. Manuel Viuda-Martos, Yolanda Ruíz-Navajas, Juana Fernández-López, José Angel Pérez-Álvarez, Acta Chim. Slov. 921 2007, 54, 921-926] | [Chemical Composition of the Essential Oils Obtained From Some Spices Widely Used in Mediterranean Region. Manuel Viuda-Martos, Yolanda Ruíz-Navajas, Juana Fernández-López, José Angel Pérez-Álvarez, Acta Chim. Slov. 921 2007, 54, 921-926] |
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| | {{:eugenol_ac.jpg|}} \\ eugenol (R=OH) \\ eugenyl acetate (R=OAc) | {{:caryophyllene.jpg| caryophyllene}} \\ β-caryophyllene | | | {{:eugenol_ac.jpg|}} \\ eugenol (R=OH) \\ eugenyl acetate (R=OAc) | {{:caryophyllene.jpg| caryophyllene}} \\ β-caryophyllene | |
| [Gassenmeier, Klaus, et al. "Unequivocal Identification of 1-Phenylethyl Acetate in Clove Buds (syzygium aromaticum (L.) Merr. & LM Perry) and Clove Essential Oil." Foods 6.7 (2017): 46] [[https://www.mdpi.com/2304-8158/6/7/46/htm]] | [Gassenmeier, Klaus, et al. "Unequivocal Identification of 1-Phenylethyl Acetate in Clove Buds (syzygium aromaticum (L.) Merr. & LM Perry) and Clove Essential Oil." Foods 6.7 (2017): 46] [[https://www.mdpi.com/2304-8158/6/7/46/htm]] |
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| | "The antioxidant activity of a commercial rectified clove leaf essential oil (Eugenia caryophyllus) and its main constituent eugenol was tested. This essential oil comprises in total 23 identified constituents, among them eugenol (76.8%), followed by β-caryophyllene (17.4%), R-humulene (2.1%), and eugenyl acetate (1.2%) as the main components. The essential oil from clove demonstrated scavenging activity against the 2,2-diphenyl-1-picryl hydracyl (DPPH) radical at concentrations lower than the concentrations of eugenol, butylated hydroxytoluene (BHT), and butylated hydroxyanisole (BHA). This essential oil also showed a significant inhibitory effect against hydroxyl radicals and acted as an iron chelator. With respect to the lipid peroxidation, the inhibitory activity of clove oil determined using a linoleic acid emulsion system indicated a higher antioxidant activity than the standard BHT." \\ |
| | [Jirovetz, Leopold, et al. "Chemical composition and antioxidant properties of clove leaf essential oil." Journal of agricultural and food chemistry 54.17 (2006): 6303-6307] |
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| {{:syzygium_aromaticum.jpg?600}} \\ | {{:syzygium_aromaticum.jpg?600}} \\ |
