Determinación de Compuestos Volátiles en Frutos de Guanábana (Annona muricata L. cv. Elita), durante la Maduración, por Nariz Electrónica y Cromatografía de Gases Acoplada a Espectroscopía de Masas
Year: 2013
Type: article
Abstract: As an exotic highly perishable tropical fruit commercially grown in Colombia, soursop (Annona muricata L.) is currently in need of postharvest handling studies. Thus, the present researchwas conducted to characterize the volatile compounds of soursop cv. Elita during postharvest. For this purpose, fruit ripeness wasevaluated, for one thing, by a volatile compound measuring systemknown as electronic nose (EN), and for another thing, by headspacesolid phase microextraction and gas chromatography massspectrometry (HS-SPME/GC-MS). The profile of volatile substancesin fruits is one of the main indicators of the sensory attributes that typify the organoleptic quality of these products. The EN constitutesan economical, relatively simple, fast and innovative alternative to determine groups of volatile compounds in whole or fractionatedsamples from fruits of commercial interest. In contrast, and despite its being a highly selective technique, the use of SPME/CG-MS might be limited by its elevated cost. Based on EN assessment, fruit ripening stages were classified as unripe, half ripe, ripe and overripe. The most active EN sensors were numbers 2 sensitiveto nitrogen oxides), 6 (sensitive to methane) and 8 (sensitive toalcohols and partially aromatic compounds). HS-SPME/GCMS analysis allowed establishing that during postharvest, the major proportion of volatile compounds corresponded to esters, predominantly Methyl hexanoate. Particularly in overripe fruits, the presence of alcoholic compounds coincides with the EN assessment, which, for its part, detected mainly alcohols and a wide range of aromatic substances. The study contributes to the characterization of postharvest volatiles, which are one of themajor sensory attributes of tropical fruits.
Institution: Universidad Nacional de Colombia
Language: Spanish
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
Funder: Universidad Nacional de Colombia
OpenAlex ID: W2770159881