title: Characterization of odor-active volatiles in champa (Campomanesia lineatifolia R. and P.).
abstract: Volatile extracts from pulp, peels, leaves, and seeds of champa (Campomanesia lineatifolia R. and P.) were obtained by continuous liquid-liquid extraction with pentane/dichloromethane (1:1), and their chemical composition was determined by using HRGC and HRGC-MS. Differences between C. lineatifolia volatile extracts with regard to the identified compounds are presented; however, in all of them the beta-triketones were detected as major constituents (between 50 and 60% of total extract). An odor profile description of volatiles isolated in all of the extracts was obtained by HRGC-O. These analyses showed that beta-triketones contributed to the fruity, floral, and green odor notes in the flavor of fruit. Application of AEDA to pulp volatile extract revealed 2,5-dimethyl-4-methoxy-3(2H)-furanone, 2-phenylethanol, and 2,3-dihydro-5-hydroxy-6,8,8-trimethyl-2-phenyl-4H-1-benzopyran-4,7(8H)-dione (champanone C) to have the highest flavor dilution factors. In a similar way, (E)-cinnamyl alcohol, 2,5-dimethyl-4-methoxy-3(2H)-furanone, and 2,3-dihydro-5-hydroxy-6,8,8-trimethyl-2-phenyl-4H-1-benzopyran-4,7(8H)-dione (champanone C) were identified as key odorant compounds in the fruit peel volatile extract. This is the first time that the volatile composition in champa is reported and also the sensory odor importance of beta-triketones.
authors.affiliation: Departamento de Química and Instituto de Ciencias Naturales, Universidad Nacional de Colombia, AA14490 Bogotá, Colombia. cosorior@unal.edu.co
authors.forename: Coralia
authors.initials: C
authors.lastname: Osorio
authors.forename: Martha
authors.initials: M
authors.lastname: Alarcon
authors.forename: Camilo
authors.initials: C
authors.lastname: Moreno
authors.forename: Adriana
authors.initials: A
authors.lastname: Bonilla
authors.forename: Juliana
authors.initials: J
authors.lastname: Barrios
authors.forename: Cristina
authors.initials: C
authors.lastname: Garzon
authors.forename: Carmenza
authors.initials: C
authors.lastname: Duque
mesh_terms: D002849:Chromatography, Gas; D005638:Fruit / Q000737:chemistry*; D005663:Furans / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D007659:Ketones / Q000032:analysis; D027822:Myrtaceae / Q000737:chemistry*; D009812:Odorants / Q000032:analysis*; D012903:Smell; D013649:Taste; D013729:Terpenes / Q000032:analysis; D014835:Volatilization
chemical_list: D005663:Furans; D007659:Ketones; D013729:Terpenes