De préférence, ledit agent d’extraction organique est sélectionné parmi le groupe consistant en phenylacetate, n-butylacetate, b-phenylethylacetate, sec-butylacetate, isoamylacetate, n-pentylacetate, ethanol, 2-propanol, alpha-methylcyclopropanemethanol, dimethylformamide, n,n-dimethylacetamide, methylformamide, n,n-dimethylpropanamide, n,n-dimethylbutanamide, n-butylacetamide, 1,3-dioxane, 4-methyl-1,3-dioxane, beta-propiolactone, gamma-butyrolactone, dimethylmalonate, ethyl acetoacetate, 1,2-ethanedioldiacetate, ester méthylique de l’acide cyanoacetique, ester 2-propenyl de l’acide 3-oxobutanoic, ester diméthylique de l’acide pentanedioique, ethyloxalate, méthyle éthyle ester de l’acide 3-oxobutanoique, éthylène glycol monomethylether acétate, dimethylmaléate, ester éthylique de l’acide cyanoacetique, éthyle méthyle ester de l’acide butanedioïque, diethylmalonate, l’acide méthylique de l’acide 2-hydroxy-propanoique, t-butylacetoacetate, ethylsuccinate, allylidene diacetate, ester diéthylique de l’acide adipique, phenylacétate d’éthyle, phényle méthyle ester de l’acide acétique, ester dibutylique de l’acide (z)-2-butenedioique, 2-methylpropyl ester de l’acide acétique, ester tetramethylique de l’acide silicique, ester butylique de l’acide 2-propenoique, 2-methylpropyl ester de l’acide propénoïque, ester pentylique de l’acide formique, ester cyclohexylique de l’acide acétique, ester éthylique de l’acide 3-methylbutanoique, hexanoate de méthyle, diglyme, crotyl glycol ether, diethyleneglycol monobutylether, diethyleneglycol dibutylether, isoamylformate, 2,5,8,11-tetraoxadodecane, 1-hydroxy-2-propanone, acetonylacetone, acetylacetone, 2-oxepanone, n-methyl-2-pyrrolidinone, 5-ethyldihydro-2(3h)-furanone, 5-methyl-2(3h)-furanone, 2-cyclohexen-1-one, 1-(4-methoxyphenyl)-2-propanone, cyclopentanone, 4-hydroxy-4-methyl-2-pentanone, 4-methylene-2-oxetanone, 1-cyclopropylethanone, 2,3-pentanedione, isophorone, cyclohexanone, 2-methylcyclopentanone, 4-methyl-3-penten-2-one, cycloheptanone, 3-methylcyclohexanone, 4-methylcyclohexanone, 2,3-hexanedione, 3,4-hexanedione, 4-phenyl-2-butanone, 2-hexanone, 4-methyl-2-pentanone, 3-hexanone, 4-fluoroacetophenone, 4,4-dimethyl-2-pentanone, 5-methyl-2-hexanone, 2,2-dimethylcyclohexanone, 2-heptanone, 2,4-dimethyl-3-pentanone, 2,2-dimethyl-3-pentanone, 3-heptanone, 4-heptanone, 2-octanone, 2-methyl-1-phenyl-1-propanone, pentanedinitrile, 2-methylpentanedinitrile, hydroxyacetonitrile, 2-hydroxypropanenitrile, dimethylaminopropionitrile, (e)-2-butenenitrile, 3-butenenitrile, butyronitrile, 2-hydroxy-2-methylpropanenitrile, valeronitrile, phenylacetonitrile, hexanenitrile, heptanenitrile, octanenitrile, nonanonitrile, trimethylphosphate, propylene carbonate, tetramethylorthocarbonate, triethylphosphate, tris(2-butoxyethyl)phosphate, diethylcarbonate, 2-(2-ethoxyethoxy)ethanolacetate, 2-ethoxyethanolacetate, 2-(2-butoxyethoxy)ethanolacetate, 2-butoxyethanolacetate, furfural, diethyleneglycolmonoethylether, 2-methoxyethanol, 2-2-(2-butoxyethoxy)ethoxyethanol, 3-methoxy-1-butanol, 1-methoxy2-propanol, ethoxyethanol, 2-furanmethanol, tetrahydro-2h-pyran-2-methanol, 3-methoxyphenol, 1-propoxy-2-propanol, 2,2'-oxybis(2,1-ethanediyloxy)bisethanol, 2-(2-methoxyethoxy)ethanol, glycol, triethyleneglycol, diethyleneglycol, 1,3-propanediol, propyleneglycol, tripropyleneglycol, 1,5-pentanediol, 2-methyl-2,4-pentanediol, 2-ethoxyethylacrylate, ethylbutyrate, propylpropionate, ethylvalerate, n-butylpropionate, n-propylbutyrate, isobutylpropionate, isopropylbutyrate, 1,1'-oxybis-2-ethoxy-ethane, tetrahydrofurfurylalcohol, 4-(2-hydroxyethyl)morpholine, 1,3-butanediol, 1,2-ethanedioldinitrate, 3-oxiranyl-7-oxabicyclo[4,1,0]heptane, dibutyloxalate, ((1,1-dimethylethoxy)methyl)oxirane, dimethoxytetrahydrofuran, triethylorthoformate, citral, allylacrylate, butyllactate, 2-propen-1-ol, methacrylalcohol, 2-butanoneoxime.