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Investigating the impact of botanical origin and harvesting period on carbon stable isotope ratio values ( 13 C/ 12 C) and different parameter analysis of Greek unifloral honeys: A chemometric approach for correct botanical discrimination
Author(s) -
Karabagias Ioannis K.,
Casiello Grazia,
Kontakos Stavros,
Louppis Artemis P.,
Longobardi Francesco,
Kontominas Michael G.
Publication year - 2016
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/ijfs.13227
Subject(s) - isotope , chemistry , stable isotope ratio , isotopes of carbon , analytical chemistry (journal) , mass spectrometry , isotope ratio mass spectrometry , carbon fibers , chromatography , environmental chemistry , total organic carbon , mathematics , physics , composite number , quantum mechanics , algorithm
Summary The aim of this study was to investigate the impact of botanical origin and harvesting period on carbon stable isotope ratio ( 13 C/ 12 C), colour intensity ( CI ), radical scavenging activity (% RSA ), P and Sn content of Greek unifloral honeys. Thus, twenty‐four honey samples were collected during harvesting periods 2011–2012 and 2012–2013, from four different regions in Greece. 13 C/ 12 C ratios and minerals were determined using isotope ratio mass spectrometry ( IRMS ) and inductively coupled plasma optical–emission spectroscopy ( ICP ‐ OES ), respectively. CI and % RSA were measured using spectrophotometric assays. Results showed that only 13 C/ 12 C values and % RSA were affected by both botanical origin and harvesting period ( P < 0.05). Applying then chemometric analyses to the collected data set, honeys were correctly classified according to honey type (correct classification rate 87.5% and 79.2% using the original and cross‐validation method, respectively). The use of different origin parameters has the potential to aid in honey authentication.