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ficus_carica_l [2017/04/02 10:21]
andreas 		ficus_carica_l [2021/09/19 18:40]
andreas
Zeile 27: Zeile 27:
 Major volatile compound found in dried figs was benzaldehyde (24.7%), followed by hexanal (23.8%), furfural (9.6%), 3-methyl butanal (5.7%), 2-methyl butanal (4.0%) and pentanal (3.8%). Ethyl acetate (2.9%) was the most abundant ester found in dried figs, along with minor (0.1-0.5%) amounts of ethyl esters of C4/C5 acids. Other components were 2-pentyl furane (2.9%), 2-ethyl furane (0.9%), butyrolactone (2.2%), ethanol (1.1%) and δ-decalactone (0.2%). Pretreatment of figs with ascorbic acid, sulfur dioxide or citric acid decreased significantly the drying time, but had great influence on aroma volatiles by lowering furfural (4.8-5.5%) and making ethyl acetate a major component (19-55%).\\ Major volatile compound found in dried figs was benzaldehyde (24.7%), followed by hexanal (23.8%), furfural (9.6%), 3-methyl butanal (5.7%), 2-methyl butanal (4.0%) and pentanal (3.8%). Ethyl acetate (2.9%) was the most abundant ester found in dried figs, along with minor (0.1-0.5%) amounts of ethyl esters of C4/C5 acids. Other components were 2-pentyl furane (2.9%), 2-ethyl furane (0.9%), butyrolactone (2.2%), ethanol (1.1%) and δ-decalactone (0.2%). Pretreatment of figs with ascorbic acid, sulfur dioxide or citric acid decreased significantly the drying time, but had great influence on aroma volatiles by lowering furfural (4.8-5.5%) and making ethyl acetate a major component (19-55%).\\
 [Characterisation of volatiles in dried white varieties figs (Ficus carica L.)., Mujić, I., Kralj, M.B., Jokić, S., Jug, T., Šubarić, D., Vidović, S., Jarni, K., Journal of food science and technology, 51(9), 2014, 1837-1846] [Characterisation of volatiles in dried white varieties figs (Ficus carica L.)., Mujić, I., Kralj, M.B., Jokić, S., Jug, T., Šubarić, D., Vidović, S., Jarni, K., Journal of food science and technology, 51(9), 2014, 1837-1846]
 +
 +„ The ‘key’ odor compound of dried fig aroma was found to be β-damascenone. Owing to its low detection threshold and minute quantity in fig cultivars, the presence of β-damascenone was furthermore confirmed through GC/MS/MS and GC/TOF-MS. β-Damascenone was identified in variable quantities among fig varieties and their liquors, predominating in Kalamon fig cultivar of Peloponnese region, while its amount was found to be dependent on the postharvest storage time and preservation process of dried figs.“ \\
 +[Palassarou, Maria, et al. "Volatile profile of Greek dried white figs (Ficus carica L.) and investigation of the role of β‐damascenone in aroma formation in fig liquors." Journal of the Science of Food and Agriculture 97.15 (2017): 5254-5270]
 +
 +"... 22 compounds were identified as the key aroma compounds and eight of these were evaluated as the most important aroma contributors of Xinjiang dried figs, including heptanal, nonanal, linalool, benzyl benzoate, styrene, eugenol, 2-methoxy-4-vinylphenol, and vanillin. Moreover, three volatile components, including 2-methoxy-4-methylphenol, 2-methoxy-4-vinylphenol and ortho-guaiacol, were identified as key aroma compounds of dried figs and have not been reported previously." \\
 +[Yao, Lingyun, et al. "Characterization of key aroma compounds in Xinjiang dried figs (Ficus carica L.) by GC–MS, GC–olfactometry, odor activity values, and sensory analyses." LWT (2021): 111982]
  
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Zeile 32: Zeile 38:
 **Fig leaf absolute**  **Fig leaf absolute** 
  
-The leaves of Ficus carica are extracted with solvent to obtain a concrete, which is subsequent treated with alcohol. The residue represents a dark green to brownish green viscous liquid of a sweet, green, herbaceous, somewhat woody odor with a mossy undertone. The first distillation range (30-160°C/0.05 Torr) of this fig leaf absolute is the olfactory relevant part - only 1% (!). Main components of this part are hydrocarbons like caryophyllene, α- and β-farnesene, furthermore linalool, benzyl acetate, (Z)-3-hexenyl tiglate, methyl salicylate, β-ionone, and (Z)-3-hexenyl benzoate. Minor components are (Z)-3-hexenyl butyrate, (Z)-3-hexenyl 2-methylbutyrate, methyl benzoate, linalyl acetate, β-cyclocitral, safranal, α-terpineol, benzyl alcohol, geranyl acetate, phenylethanol, β-damascenone, geranylacetone, jasmone, caryophyllene oxide, and cinnamyl acetate e.g. Further minor but olfactory important constituents were pyridines and pyrazines like 2-isobutyl 4-methylpyridine (tobacco-like, green) , 2-isobutanoyl 4-methylpyridine, 2-isobutenyl 4-methylpyridine (tobacco-like, bitter, fruity-floral), 2-methoxy 3-isopropylpyrazine, 2-methoxy 3-sec.butylylpyrazine, 2-methoxy 3-isobutylpyrazine e.g. \\ +The leaves of Ficus carica are extracted with solvent to obtain a concrete, which is subsequent treated with alcohol. The residue represents a dark green to brownish green viscous liquid of a sweet, green, herbaceous, somewhat woody odor with a mossy undertone. The first distillation range (30-160°C/0.05 Torr) of this fig leaf absolute is the olfactory relevant part - only 1% (!). Main components of this part are hydrocarbons like caryophyllene, α- and β-farnesene, furthermore linalool, benzyl acetate, (Z)-3-hexenyl tiglate, methyl salicylate, β-ionone, and (Z)-3-hexenyl benzoate. Minor components are (Z)-3-hexenyl butyrate, (Z)-3-hexenyl 2-methylbutyrate, methyl benzoate, linalyl acetate, β-cyclocitral, safranal, α-terpineol, benzyl alcohol, geranyl acetate, phenylethanol, β-damascenone, geranylacetone, jasmone, caryophyllene oxide, and cinnamyl acetate e.g. Further minor but olfactory important constituents were pyridines and pyrazines like 2-isobutyl 4-methylpyridine (tobacco-like, green), 2-isobutanoyl 4-methylpyridine, 2-isobutenyl 4-methylpyridine (tobacco-like, bitter, fruity-floral), 2-methoxy 3-isopropylpyrazine, 2-methoxy 3-sec.butylylpyrazine, 2-methoxy 3-isobutylpyrazine e.g. \\ 
-[Kaiser, R., „New naturla products of structural and olfactory interest identified in fig leaf absolute (//Ficus carica L.//).“ Progress in essential oil research (1986): 227-239] +[Kaiser, R., „New natural products of structural and olfactory interest identified in fig leaf absolute (//Ficus carica L.//).“ Progress in essential oil research (1986): 227-239] 
  
 "Based on sensitization reactions at 5% and strong phototoxic reactions, the Panel concluded that the material should be banned. A RIFM Advisory Letter (RIFM, 1980) was issued to all members stating the potential for induction of skin and phototoxic reactions. As a result, an IFRA Guideline (now renamed a Standard) was issued in October, 1980 (IFRA, 1980), which stated, ‘‘Fig Leaf Absolute should not be used as a fragrance ingredient based on test results of RIFM showing sensitizing and extreme phototoxic potential for this material.’’ A RIFM "Based on sensitization reactions at 5% and strong phototoxic reactions, the Panel concluded that the material should be banned. A RIFM Advisory Letter (RIFM, 1980) was issued to all members stating the potential for induction of skin and phototoxic reactions. As a result, an IFRA Guideline (now renamed a Standard) was issued in October, 1980 (IFRA, 1980), which stated, ‘‘Fig Leaf Absolute should not be used as a fragrance ingredient based on test results of RIFM showing sensitizing and extreme phototoxic potential for this material.’’ A RIFM
Zeile 42: Zeile 48:
 [Ayoub, N., Singab, A. N., Mostafa, N., & Schultze, W. (2010). Volatile constituents of leaves of Ficus carica Linn. grown in Egypt. Journal of essential oil bearing plants, 13(3), 2010, 316-321] [Ayoub, N., Singab, A. N., Mostafa, N., & Schultze, W. (2010). Volatile constituents of leaves of Ficus carica Linn. grown in Egypt. Journal of essential oil bearing plants, 13(3), 2010, 316-321]
  
-{{:ficus_carica.jpg?500}} \\+{{:ficus_carica.jpg?600}} \\
 Masclef,A., Atlas des plantes de France, vol.3 t.289, (1893) \\ Masclef,A., Atlas des plantes de France, vol.3 t.289, (1893) \\
 [[http://plantgenera.org/species.php?id_species=436905]] [[http://plantgenera.org/species.php?id_species=436905]]
  
 +{{http://www.botanische-spaziergaenge.at/Bilder/Lumix_3/P1190860.JPG}} \\
 +Ficus carica \\ © Rolf Marschner (2009),  
 +[[http://botanische-spaziergaenge.at/viewtopic.php?f=417&t=1327| www.botanische-spaziergaenge.at]]
ficus_carica_l.txt · Zuletzt geändert: 2021/12/20 11:57 von andreas

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