title: Assessing a traceability technique in fresh oranges (Citrus sinensis L. Osbeck) with an HS-SPME-GC-MS method. Towards a volatile characterisation of organic oranges.
abstract: A targeted approach using HS-SPME-GC-MS was performed to compare flavour compounds of 'Navelina' and 'Salustiana' orange cultivars from organic and conventional management systems. Both varieties of conventional oranges showed higher content of ester compounds. On the other hand, higher content of some compounds related with the geranyl-diphosphate pathway (neryl and geranyl acetates) and some terpenoids were found in the organic samples. Furthermore, the partial least square discriminant analysis (PLS-DA) achieved an effective classification for oranges based on the farming system using their volatile profiles (90 and 100% correct classification). To our knowledge, it is the first time that a comparative study dealing with farming systems and orange aroma profile has been performed. These new insights, taking into account local databases, cultivars and advanced analytical tools, highlight the potential of volatile composition for organic orange discrimination.
authors.affiliation: Technology, Postharvest and Food Industries Area, Andalusian Institute of Agricultural and Fisheries Research and Training (IFAPA), Alameda del Obispo Avda, Menéndez Pidal, s/n., 14071 Córdoba, Andalucía, Spain.
authors.forename: Francisco Julián
authors.initials: FJ
authors.lastname: Cuevas
authors.affiliation: Technology, Postharvest and Food Industries Area, Andalusian Institute of Agricultural and Fisheries Research and Training (IFAPA), Alameda del Obispo Avda, Menéndez Pidal, s/n., 14071 Córdoba, Andalucía, Spain. Electronic address: josem.moreno.rojas@juntadeandalucia.es.
authors.forename: José Manuel
authors.initials: JM
authors.lastname: Moreno-Rojas
authors.affiliation: Technology, Postharvest and Food Industries Area, Andalusian Institute of Agricultural and Fisheries Research and Training (IFAPA), Alameda del Obispo Avda, Menéndez Pidal, s/n., 14071 Córdoba, Andalucía, Spain. Electronic address: mariaj.ruiz.moreno@juntadeandalucia.es.
authors.forename: María José
authors.initials: MJ
authors.lastname: Ruiz-Moreno
mesh_terms: D032084:Citrus sinensis / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D052617:Solid Phase Microextraction / Q000379:methods*; D013649:Taste; D055549:Volatile Organic Compounds / Q000032:analysis*
chemical_list: D055549:Volatile Organic Compounds
keywords: Citrus sinensis; HS-SPME-GC-MS; Organic farming; PLS-DA; Volatile compounds