1. Introduction
Analysis of blackberry(Rubus ulmifolius) volatiles represents a
valuable approach not only to study its flavor but also for its
objective characterization,as volatile concentration depends on
different factors such as blackberry type,origin or processing
(freezing,drying,etc.).Whereas the gas chromatography–mass
spectrometry coupling(GC–MS) is the technique of choice for the
analysis of the complex mixtures of volatiles of different function-
alities present at low concentration in blackberries,the required
volatile fractionation and preconcentration step can be addressed
by different procedures [1–6].
Solid-phase microextraction(SPME)is a fast,simple,affordable
and solvent-free technique which provides a fraction suitable for
GC–MS analysis [7]. In the headspace sampling mode,the SPME
fiber consisting of a fused-silica fiber coated with a polymeric film
is exposed to the sample headspace to fractionate and precon-
centrate volatiles by partition,adsorption or mixed mechanisms.
Desorption of the SPME fiber into the injection port of a GC or
1. Introduction
Analysis of blackberry(Rubus ulmifolius) volatiles represents a
valuable approach not only to study its flavor but also for its
objective characterization,as volatile concentration depends on
different factors such as blackberry type,origin or processing
(freezing,drying,etc.).Whereas the gas chromatography–mass
spectrometry coupling(GC–MS) is the technique of choice for the
analysis of the complex mixtures of volatiles of different function-
alities present at low concentration in blackberries,the required
volatile fractionation and preconcentration step can be addressed
by different procedures [1–6].
Solid-phase microextraction(SPME)is a fast,simple,affordable
and solvent-free technique which provides a fraction suitable for
GC–MS analysis [7]. In the headspace sampling mode,the SPME
fiber consisting of a fused-silica fiber coated with a polymeric film
is exposed to the sample headspace to fractionate and precon-
centrate volatiles by partition,adsorption or mixed mechanisms.
Desorption of the SPME fiber into the injection port of a GC or
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