title: Characterization of volatiles in Costa Rican guava [Psidium friedrichsthalianum (Berg) Niedenzu] fruit.
abstract: Volatile compounds were isolated from Costa Rican guava fruit by simultaneous steam distillation-solvent extraction according to the Likens-Nickerson method. Compounds were identified by capillary GC-MS and sensorially characterized by sniffing-GC. One hundred and seventy-three components were identified in the aroma concentrate, from which (E)-beta-caryophyllene, alpha-terpineol, alpha-pinene, alpha-selinene, beta-selinene, delta-cadinene, 4,11-selinadiene, and alpha-copaene were found to be the major constituents. The amounts of aliphatic esters and terpenic compounds were thought to contribute to the unique flavor of this fruit.
mesh_terms: D000081008:Bicyclic Monoterpenes; D002849:Chromatography, Gas; D003364:Costa Rica; D000081005:Cyclohexane Monoterpenes; D053138:Cyclohexenes; D004952:Esters / Q000032:analysis; D005638:Fruit / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D039821:Monoterpenes / Q000032:analysis; D009812:Odorants / Q000032:analysis*; D000081223:Polycyclic Sesquiterpenes; D031647:Psidium / Q000737:chemistry*; D012717:Sesquiterpenes; D012903:Smell; D013649:Taste; D013729:Terpenes / Q000032:analysis; D014835:Volatilization
chemical_list: D000081008:Bicyclic Monoterpenes; D000081005:Cyclohexane Monoterpenes; D053138:Cyclohexenes; D004952:Esters; D039821:Monoterpenes; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes; D013729:Terpenes; C016775:alpha-terpineol; C024714:caryophyllene; C005451:alpha-pinene