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Entre as inúmeras frutas tropicais e subtropicais produzidas no Brasil, duas que se destacam do ponto de vista do aroma da polpa são maracujá amarelo (Passiflora edulis forma Flavicarpa) e cajá (Spondias mombin L.). Os voláteis da polpa destas frutas foram capturados pela técnica de headspace dinâmico e analisados no sistema de cromatografia gasosa de alta resolução e espectrometria de massa. Foram identificados 48 e 33 compostos voláteis na polpa de maracujá e cajá, respectivamente. Os compostos voláteis predominantes na polpa de maracujá pertenceram às classes de ésteres (59,24%), aldeídos (15,27%), cetonas (11,70%) e álcoois (6,56%), enquanto na polpa de cajá as principais classes de compostos foram de ésteres (48,76%), álcoois (21,69%), aldeídos (11,61%) e cetonas (4,19%). Outros compostos aromáticos característicos foram para maracujá: beta-ionona e linalol e para cajá: gama-octalactona e ácidos butírico e hexanóico. Among the numerous tropical and sub-tropical fruits produced in Brazil, two that attain relatively greater importance from the point of view of aroma of their pulp are yellow passion fruit (Passiflora edulis forma Flavicarpa) and yellow mombin (Spondias mombin L.). The volatile components in the pulp of these fruits were captured by dynamic headspace technique and were analyzed in a system of high-resolution gas chromatography and mass spectrometry. Forty-eight and thirty-one volatile compounds were identified in passion fruit and yellow mombin fruit pulp, respectively. The predominant volatile compounds in passion fruit pulp belonged to the classes of esters (59.24%), aldehydes (15.27%), ketones (11.70%) and alcohols (6.56%) while in the yellow mombin pulp, the principal classes of compounds were esters (48.76%), alcohols (21.69%). aldehydes (11.61%) and ketones (4.19%). The other characteristic aroma compounds for passion fruit were beta-ionone and linalool and for yellow mombin were gamma-octalactone, butanoic and hexanoic acids

food science and technology

Compostos voláteis dos frutos de maracujá (Passiflora edulis forma Flavicarpa) e de cajá (Spondias mombin L.) obtidos pela técnica de headspace dinâmico