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mammea_americana_l [2021/11/23 14:34]
andreas 		mammea_americana_l [2021/11/23 14:35] (aktuell)
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 [Sagrero-Nieves, L., De Pooter, H. L., Van Wassenhove, F. A., Major volatile constituents from the fruit of mammee apple ( Mammea americana L.). Journal of Food Composition and Analysis, Vol.2(4), 1989, 382-385] [Sagrero-Nieves, L., De Pooter, H. L., Van Wassenhove, F. A., Major volatile constituents from the fruit of mammee apple ( Mammea americana L.). Journal of Food Composition and Analysis, Vol.2(4), 1989, 382-385]
  
-|{{:ionone_beta.jpg| β-ionone}} \\ β-ionone \\ //(woody sweet)// |{{:s2_methylbutyricacid.png| (S)-2-methyl butyric acid}} \\ (S)-2-methyl butyric acid \\ //(fruity sweet)// |+|{{:ionone_beta.jpg| β-ionone}} \\ β-ionone \\ //(woody sweet)// |{{:s2_methylbutyricacid.png| (S)-2-methyl butyric acid}} \\ (S)-2-methyl butyric acid \\ //(fruity sweet)// |{{:nerolidol_e.jpg| (E)-nerolidol}} \\ (E)-nerolidol | 
  
 "The volatile constituents of mammee apple (Mammea americana) fruit pulp obtained by liquid-liquid extraction were analyzed by capillary GC and capillary GC-MS. In total, 51 components (40 of which are identified for the first time in mammee apple) were identified with methyl 3-hydroxy-2(S)-methyl propanoate pure enantiomer and 2-methyl butanoic acid with ee 98.5% S being the major components. Glycosidically bound aroma compounds were identified by capillary GC and capillary GC-MS after isolation of the glycosidic fraction obtained by Amberlite XAD-2 adsorption and methanol elution followed by hydrolysis with a commercial pectinase enzyme. In total 19 bound aroma compounds (aglycones) were identified. These aglycones mainly consisted of carboxylic acids and C13-norisoprenoids of which 2-methyl butanoic acid, 4-hydroxy-β-ionone and 4-oxo-β-ionol are the most representative. Additionally, with the aid of capillary GC-MS (EI and NCI) of trifluoroacetylated derivatives we identified eight glucosides: glucopyranosyl methylbutanoate (two isomers), glucopyranosyl methylbutenoate (two isomers), methyl 3-O-β-D-glucopyranosyl 2-methylpropanoate, methyl 3-O-β-D-glucopyranosyl 2-methylbutanoate, 4-oxo-β-ionyl 9-O-β-D-glucopyranoside and 4-oxo-7,8-dihydro-β-ionyl 9-O-β-D-glucopyranoside." \\ "The volatile constituents of mammee apple (Mammea americana) fruit pulp obtained by liquid-liquid extraction were analyzed by capillary GC and capillary GC-MS. In total, 51 components (40 of which are identified for the first time in mammee apple) were identified with methyl 3-hydroxy-2(S)-methyl propanoate pure enantiomer and 2-methyl butanoic acid with ee 98.5% S being the major components. Glycosidically bound aroma compounds were identified by capillary GC and capillary GC-MS after isolation of the glycosidic fraction obtained by Amberlite XAD-2 adsorption and methanol elution followed by hydrolysis with a commercial pectinase enzyme. In total 19 bound aroma compounds (aglycones) were identified. These aglycones mainly consisted of carboxylic acids and C13-norisoprenoids of which 2-methyl butanoic acid, 4-hydroxy-β-ionone and 4-oxo-β-ionol are the most representative. Additionally, with the aid of capillary GC-MS (EI and NCI) of trifluoroacetylated derivatives we identified eight glucosides: glucopyranosyl methylbutanoate (two isomers), glucopyranosyl methylbutenoate (two isomers), methyl 3-O-β-D-glucopyranosyl 2-methylpropanoate, methyl 3-O-β-D-glucopyranosyl 2-methylbutanoate, 4-oxo-β-ionyl 9-O-β-D-glucopyranoside and 4-oxo-7,8-dihydro-β-ionyl 9-O-β-D-glucopyranoside." \\
mammea_americana_l.txt · Zuletzt geändert: 2021/11/23 14:35 von andreas

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