New-York tribune., 1905-07-16
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fH Fake Foods in the Kitchen. N

SuItIns roam arter moments standing The
roam OF pure extracts is coIorless. If Caramel
Is present, a color persists at the points Of CON
has disappeared 'a'So DuDOle
II pure vanilla extract be eyapora+a5 70 ab,,,+
one-lhlrQ It's volume the resins become insoIuble
and settle TO the bottom Of the dish Ar+i5cIaI
SAlracts remain clear under the same conditions
N examining vanilla extracts the charsc+ar Of
these resins is studied. For this purnosa q 7isb
containing about ounce of the extract Is
P~laceu ~ on a teakettle or other vessel Of boiling
water until the liquid evaporates to about oneo
third or less Of its volume Owing 10 fhe e1,ano
ration OF the alcohol the resins will then he IN
soluble Water may be added to restore the
~ Lulu 70 approximately its original volume.
Inc resin will then separate out as a brown
Hoccuieht preclpitate. few drops Of hydro
cHIoIlc acid may be added and the liquid stirred
and the insoluble matter allowed 20 settle II is
then filtered and the resin on the filter paDer
washed with water. The resin NAV then he dis
sotFed IN a little alcohol, and to one portion of
thls solution is added small particle OF ferric
aIuIn and 10 another portion a few drops of
hyQrochloric acid If the resin be that OF the
vanilla bean, neither ferric alum nor hvdro-
chloric acid viii produce more than slight change
OF color With resins from most other sources
however one or both Of these substances yield
a distinct coICr change
FOR nltering, a piece OF filter paper should be
folded once through the middle and again at
rlght angles to the first fold. It may now be
opened with one fold one side and three on
the other and fitted into a glass funnel When
the paper is folded in this manner the precipi-
tated resins may be readily washed with water
When the washing is completed the resins NAV
De dissolved by pouring alcohol through the
filter. This work with the resins will require
some practice before It can be successfully per
formed It is of consdera BILE value however in
Judging of the purity Of vanilla extract BY
lemon extract is understood a solution Of lemon
OIL IN strong alcohol. In order to contain as
much lemon oil as is supposed TO be found in
nigh grade extracts the alcohol should consti-
tute about 50 per cent Of the sample. The
alcohol is therefore the most valuable con-
suIuent OF lemon extract. and manufacturers
Who turn out a low grade product usually do SO
because OF their economy Of alcohol rather than
of lemon oil. Owing TO the fact that lemon
extract is practically a saturated solution Of oil
OF lemon in strong alcohol the sample may be
examined by simple dilutlOn with water A tea
spoonful Of the oil in question may be placed in
the bottom of an ordinary glass tumbler and
Two or three teaspoonfuls of water added If
the sample in question be real lemon extract
the lemon oil should be thrown out of solution
by reason Of its insOlubility in the alcohol after
its dilutiOn with water. The result is at first
marked tuTbidity and later the separation of
the oil of lemon the top OF the aqueous
liquid. If the sample remains perfectly clear
after the addition OF water or if a marked
turbidity is not produced. it is a low grade
product and contains very little if any, oil of
lemon.