title: Characterization of the aromatic profile in aqueous essence and fruit juice of yellow passion fruit (Passiflora edulis Sims F. Flavicarpa degner) by GC-MS and GC/O.
abstract: Chemical characterization by gas chromatography-mass spectometry (GC-MS) of the aromatic profile of yellow passion fruit essence and the juice of the fruit yielded a total of 62 and 34 components, respectively. Four new components have been identified and quantified for the first time in this fruit: 3-methyl-2-butanone; ethyl lactate (quantified only in the fruit juice); diethyl malonate (quantified only in the essence); and 3-penten-2-ol (quantified in both samples). Analysis of these samples by gas chromatography/olfactometry (GC/O) yielded a total of 66 components which appear to contribute to the aroma of passion fruit juice and its aqueous essence. Of these, four could not be quantified by GC-MS: acetic acid, ethyl propionate, ethyl 3-oxobutyrate, and propyl hexanoate. New components were described for the first time as constituents of the aromatic profile in this fruit including acetal, 1,3-dimethyl benzene, and 2-methylbutyl hexanoate. Aroma extract dilution analysis (AEDA) allowed for the detection of the most potent odorants in the commercial essence (2-methylbutyl hexanoate and hexyl hexanoate) and in the fresh juice (1,3-dimethyl benzene and 2-methylbutyl hexanoate). 2-Methylbutyl hexanoate, considered as one of the most potent odorants in this fruit, has been described for the first time as an aromatic constituent of yellow passion fruit.
authors.affiliation: Citrus and Subtropical Products Laboratory, U.S. Department of Agriculture, 600 Avenue S, N.W., Winter Haven, Florida 33881, USA.
authors.forename: Maria J
authors.initials: MJ
authors.lastname: Jordán
authors.forename: Kevin L
authors.initials: KL
authors.lastname: Goodner
authors.forename: Philip E
authors.initials: PE
authors.lastname: Shaw
mesh_terms: D000438:Alcohols / Q000032:analysis; D001628:Beverages / Q000032:analysis; D002849:Chromatography, Gas; D004952:Esters / Q000032:analysis; D005638:Fruit / Q000737:chemistry*; D005663:Furans / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D009812:Odorants / Q000032:analysis*; D012903:Smell; D014835:Volatilization; D014867:Water
chemical_list: D000438:Alcohols; D004952:Esters; D005663:Furans; D014867:Water