title: Experimental design applied to the analysis of volatile compounds in apple juice by headspace solid-phase microextraction.
abstract: A simple and fast method based on solid-phase microextraction (SPME) followed by fast gas chromatography (Fast GC) has been developed for the analysis of volatile compounds in Asturian apple juices employed in the cider production. Three different fiber coatings have been checked (PDMS, PDMS-DVB and CAR-PDMS) and PDMS-DVB has been presented to be the most suitable one. Experimental design has been employed in the optimization of extraction factors and robustness assessment. The use of Fast GC allowed the separation of 14 compounds (esters, aldehydes and alcohols) in approximately 4 min, clearly reducing the analysis time when compared to conventional GC. Good linearity, recoveries and repeatability of the solid-phase microextraction were obtained with r(2) values, recoveries and relative standard deviations ranging from 0.9822 to 0.9998, 83.2 to 109.8% and 0.5 to 11.7%, respectively, using standard solution.
authors.affiliation: Industrial Química del Nalón S.A., Oviedo, Spain. ddazllorente@gmail.com
authors.forename: Daniel Díaz
authors.initials: DD
authors.lastname: Llorente
authors.forename: Pilar Arias
authors.initials: PA
authors.lastname: Abrodo
authors.forename: Enrique Dapena
authors.initials: ED
authors.lastname: de la Fuente
authors.forename: Jaime González
authors.initials: JG
authors.lastname: Alvarez
authors.forename: Maria Dolores Gutiérrez
authors.initials: MD
authors.lastname: Alvarez
authors.forename: Domingo Blanco
authors.initials: DB
authors.lastname: Gomis
mesh_terms: D001628:Beverages / Q000032:analysis*; D002849:Chromatography, Gas; D027845:Malus / Q000737:chemistry*; D052617:Solid Phase Microextraction / Q000379:methods*; D055549:Volatile Organic Compounds / Q000032:analysis* / Q000737:chemistry; D014835:Volatilization
chemical_list: D055549:Volatile Organic Compounds