Analysis of volatile compounds in some typical Brazilian fruits and juices by SPME-GC method.
This paper describes the analysis of volatile organic compounds (VOC) in typical Brazilian fruit and fruit juices by a solid-phase microextraction (SPME) method using a capillary gas chromatography system with flame ionization detection and mass spectrometry (GC-MS). A SPME holder with a 100-microm polydimethilsiloxane fibre coating was utilized. The optimal conditions were desorption at 220 degrees C for 1 min, absorption at 50 degrees C for 20 min and 4.00 ml of sample in the headspace vial. The method gave good precision and showed a linear response. More than 100 VOC were identified in the fruit and juices studied by GC-MS. The method was employed to quantify ethanol, naphthalene and benzoic acid in four different species of Brazilian fruit and their juices.
de Lourdes Cardeal
Zenilda
Z
Chemistry Department, ICEx, Federal University of Minas Gerais, Belo Horizonte, M.G. Brazil. zenilda@ufmg.br
Guimarães
Eliana Moreira
EM
Parreira
Fabrício Vilela
FV
D031021:Anacardium / Q000737:chemistry; D019817:Benzoic Acid / Q000032:analysis; D001628:Beverages / Q000032:analysis*; D000431:Ethanol / Q000032:analysis; D005410:Flame Ionization / Q000379:methods; D005504:Food Analysis / Q000379:methods; D005638:Fruit / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D031022:Mangifera / Q000737:chemistry; D009281:Naphthalenes / Q000032:analysis; D031647:Psidium / Q000737:chemistry; D014835:Volatilization
D009281:Naphthalenes; C031721:naphthalene; D000431:Ethanol; D019817:Benzoic Acid