Artificially
off-flavoured
samples
were
prepared
at lab
scale
by
adding
cocoa
butter
preliminarily
mixed
with
different
off-flavours
to
melted
chocolate.
Each
off-flavour
compound
was
added
in the
cocoa
butter
to achieve
a concentration
of
125
ppm.
Artificially
off-
flavoured
cocoa
butter
was
then
added
to 400
g of
chocolate
in order
to
obtain
an estimated
final
concentration
in the
sample
of
∼6 ppm.
The
chocolate
was
then
tempered,
moulded,
cooled
and
demoulded
in small
square
shaped
tablets
of
∼15 g.
All
the
21
samples
(7 for
3
types
of
chocolate)
were
then
wrapped
in a double
layer
aluminium
foil,
labelled
and
stored
in plastic
boxes.