title: Volatile profiles of flavedo, pulp and seeds in Poncirus trifoliata fruits.
abstract: BACKGROUND
  Poncirus trifoliata, also known as trifoliate orange, is a tree native to China and Korea and widely used all over the world as a rootstock breeding material. In this study the differences among the volatile profiles of flavedo, pulp and seeds from two cultivars (var. trifoliata and var. monstrosa) grown in Italy (Marche, Abruzzo and Sicily) were determined. Headspace solid phase microextraction and hydrodistillation techniques were used in combination with GC/FID and GC/MS to obtain the volatile profiles of the samples.
  
  
  RESULTS
  Both techniques permitted the differentiation of fruit parts based on the main volatile components: the flavedo was characterized by monoterpene hydrocarbons such as limonene and myrcene, the seeds were characterized by sesquiterpene hydrocarbons such as (E)-caryophyllene and germacrene D, while the pulp showed an intermediate composition. The main differences in volatile profiles obtained by the two techniques were analyzed by chemometric techniques such as principal component analysis.
  
  
  CONCLUSIONS
  The study did not highlight significant differences in volatiles between the two cultivars of trifoliate orange, while few differences in the number of volatiles in the fruit parts were revealed by the two techniques.
authors.affiliation: School of Science and Technology, Chemistry Division, University of Camerino, Via Sant'Agostino 1, I-62032, Camerino, Italy.
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Papa
authors.forename: Filippo
authors.initials: F
authors.lastname: Maggi
authors.forename: Kevin
authors.initials: K
authors.lastname: Cianfaglione
authors.forename: Gianni
authors.initials: G
authors.lastname: Sagratini
authors.forename: Giovanni
authors.initials: G
authors.lastname: Caprioli
authors.forename: Sauro
authors.initials: S
authors.lastname: Vittori
mesh_terms: D005638:Fruit / Q000737:chemistry*; D015999:Multivariate Analysis; D032104:Poncirus / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry*; D055549:Volatile Organic Compounds / Q000737:chemistry*
chemical_list: D055549:Volatile Organic Compounds
keywords: Poncirus trifoliata; Rutaceae; cultivars; fruit; headspace solid phase microextraction; hydrodistillation