Volatile composition of raw and oven-cooked pulp of the fē’i banana ( Musa troglodytarum L.) fruits from French Polynesia
Résumé
Volatile compounds from raw and oven-cooked pulp of the fe'i banana (Musa troglodytarum) were isolated by two different organic solvents (acetone and dichloromethane), and studied by gas chromatography/flame ionization detector (GC/FID) and GC/mass spectrometry (GC/MS). One hundred compounds were identified for the first time, according to their retention time on an apolar capillary column and their mass spectra. They are divided as follows: one sulfur compound (0.1% of the raw dichloromethane extract), four phenols (5.6-41.4%), six lactones (0.1-5.5%), ten hydrocarbons (0.2-3.1%), eleven esters (0.3-2.0%), sixteen miscellaneous compounds (6.1-76.4%), seventeen acids (1.1-43.7%), seventeen carbonyl compounds (0.2-44.3%) and eighteen alcohols (0.9-9.4%). Three compounds were found at a level greater than 1 mg/kg: p-vinyl guaiacol (1.9mg/kg) in the raw fe'i banana acetone extract;; 5-(hydroxymethyl)furfural (7.4mg/kg) in the oven-cooked fe'i banana acetone extract;; (E)-2-hexenal (2.4mg/kg) and p-vinyl guaiacol (2.1mg/kg) in the raw fe'i banana dichloromethane extract and 5-(hydroxymethyl)furfural (4.7mg/kg) in the oven-cooked fe'i banana dichloromethane extract.