Comparison between extraction methods to obtain volátiles from lulo (Solatium quitoense) pulp / Comparación entre métodos de extracción para la obtención de volátiles a partir de pulpa de lulo (Solanum qu toense) / Comparação entre métodos de extração para a obtenção de voláteis a partir da polpa de lulo (Solanum quitoense)
Simultaneous Distillation-Solvent Extraction (SDE) and Headspace Solid Phase Micro-extraction (HS-SPME), coupled to Gas Chromatography-Mass Spectrometry (GC-MS), for recovery of volatiles from lulo pulp (Solanum quitoense) were compared. A completely randomized SDE/GC-MS design was applied to establish differences between the areas obtained with different solvents, whereas a two-way HS-SPME/GC-MS indicated the most appropriate extraction conditions of volatiles, having the type of fiber and the adsorptiontemperature as factors. SDE/GC-MS mainly promoted the extraction of hydrocarbons, aldehydes, and esters; whereas esters and aldehydes had higher areas using HS-SPME/GC-MS. Furthermore, the variance analysis showed a significant interaction among the type of fiber, the adsorptiontemperature, and the functional groups.