ISSUE 03 | JULY 2016
Food Quality Magazine
Figure 8. A graphical representation of non-targeted methods: a sample showing a signal outside of the defined
authentic sample range (Sample 2) raises an alert.
for both authentic and non-authentic samples is developed. Figure 8
shows a representation of the process for non-targeted detection.
As an example, when it became obvious that 2014/2015 was going to be
a very poor year for olive oil harvest
and with rising prices a good incentive for food fraud, a non-targeted
screen (NTS) for authentication of
extra virgin olive oil was developed
by Mèrieux NutriSciences. Authentic
Italian olive oil samples were analyzed for more than 500 different parameters by NTS to create a model
that represented the range of parameters for authentic oil. Samples
were subsequently collected from
multiple countries, including Italy,
Spain, Turkey, and the U.S. When the
model was challenged with adulterated samples (either lower grades of
oil or oil of a different provenance),
Figure 9. Extra virgin olive oil authenticity prediction model.
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