Fast headspace-enantioselective GC-mass spectrometric-multivariate statistical method for routine authentication of flavoured fruit foods
Articolo
Data di Pubblicazione:
2012
Abstract:
This study describes a rapid total analysis system (TAS) to detect the authenticity of fruit-flavoured foods
and beverages by on-line combining headspace solid phase microextraction (HS-SPME) with enantioselective
GC–MS (Es-GC–MS) and statistical multivariate methods (PCA, HCA). Peach, coconut, apricot, raspberry,
as fruits mainly characterised by c- and d-lactones as chiral markers, strawberry (a-ionone,
linalool, nerolidol, ethyl 2-methylbutyrate, 2-methylbutyric acid and c-lactones) and melon (ethyl 2-
methylbutyrate and 2-methylbutanol) were investigated. The system was developed by (a) optimising
non-equilibrium HS-SPME sample preparation, (b) speeding-up ES-GC using cyclodextrin derivatives as
chiral selectors with conventional and narrow-bore columns and (c) elaborating data by multivariate
methods. The resulting TAS affords a reduction of the time needed for the whole analytical process from
about 150 min to 20–50 min (67–87% of the current routine method) depending on matrix, sampling and
analysis conditions and Es-GC columns.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
Flavoured fruit products; Chiral marker; Non-equilibrium headspace-SPME; Enantioselective GC–MS; Multivariate statistical methods
Elenco autori:
Cecilia Cagliero; Carlo Bicchi ; Chiara Cordero; Patrizia Rubiolo; Barbara Sgorbini; Erica Liberto
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