Classification of olive oils according to geographical origin by using (1)H NMR fingerprinting combined with multivariate analysis
Φόρτωση...
Ημερομηνία
Συγγραφείς
Longobardi, F.
Ventrella, A.
Napoli, C.
Humpfer, E.
Schutz, B.
Schafer, H.
Kontominas, M. G.
Sacco, A.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Food Chemistry
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
Authentic extravirgin olive oils from 7 different regions (Italy - 3 regions, Greece - 4 regions) have been investigated by (1)H Nuclear Magnetic Resonance (NMR) fingerprinting in combination with multivariate statistical analysis. In order to cover the dominating lipid signals as well as signals from compounds of low abundance in the oil, both a simple one pulse experiment and an experiment with multiple saturation of the lipid signals was applied to each sample. Thus, the dynamic range of concentrations covered by the two experiments was of the order of 100,000 allowing for a more comprehensive NMR assessment of the samples. Monte-Carlo embedded cross-validation was used to demonstrate that a combination of principal component analysis, canonical analysis, and classification via nearest class mean can be used to predict the origin of olive oil samples from (1)H NMR data. Given the rather limited number of samples tested, correct prediction probabilities of 78% were achieved with region specific correct predictions between 53% and 100%. (C) 2011 Elsevier Ltd. All rights reserved.
Περιγραφή
Λέξεις-κλειδιά
(1)h nmr, fingerprinting, multi-signal suppression sequence, multivariate statistical analysis, olive oil, geographic origin, principal component analysis, fatty-acid-composition, pattern-recognition, authentication, cultivars, chemometrics, triglyceride, spectroscopy, phenotypes, networks
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000295666100025
http://ac.els-cdn.com/S0308814611009320/1-s2.0-S0308814611009320-main.pdf?_tid=d6c0ee2b4bac024aec58f01d54467346&acdnat=1333031196_8b420ba1542a1548c85b7ec6dd38e89f
http://ac.els-cdn.com/S0308814611009320/1-s2.0-S0308814611009320-main.pdf?_tid=d6c0ee2b4bac024aec58f01d54467346&acdnat=1333031196_8b420ba1542a1548c85b7ec6dd38e89f
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας