Coffee and chicory : $b Their culture, chemical composition, preparation for market, and consumption, with simple tests for detecting adulteration, and practical hints for the producer and consumerSimmonds, P. L. (Peter Lund)
Science
Coffee and chicory : $b Their culture, chemical composition, preparation for market, and consumption, with simple tests for detecting adulteration, and practical hints for the producer and consumer
Simmonds, P. L. (Peter Lund)
Chicory; Coffee; Food adulteration and inspection
Dr. Normandy, in his evidence before the Parliamentary Committee on the
Adulteration of Food, &c., stated that he had met with roasted corn in
coffee to an extent of from 25 to 30 per cent.; it is recognised by the
size and character of the starch granules; consists of barley and rye,
and is generally very easy to detect; it floats up. If coffee has been
adulterated with roasted grain, when you pour boiling water upon it you
will see rising against the sides of the cup portions of the ground
grain, which you sometimes can separate in considerable quantities, by
capillary attraction. If you pour such coffee from the coffee-pot, some
of those grains will fall with the liquid in the cup, and they will
climb up, as it were, the sides of the cup a quarter of an inch, or
something of that kind, all round, and you can collect them very easily.
Dr. R. D. Thompson, F.R.S., another witness, stated that a large cargo
of lupins from Egypt having been imported, which could not be made any
use of in consequence of their bitter taste, he was asked to give a
certificate in favour of their being equal to coffee, but declined, and
recommended that, after steeping, to remove the bitter principle, they
should be sold for cattle. He also added that he had seen an ingenious
apparatus for making artificial coffee-berries from chicory and other
substances; it was something like a bullet-mould, and patented by
Messrs. Duckworth of Liverpool.
The chicory itself sold is not always pure. The Board of Inland Revenue
have found, on chemical examination in different samples, beans, rye,
oats (roasted and ground), caramel or burnt sugar, oxide of iron and
orange berries.
The principle contained in coffee, remarks Dr. Letheby, may be
considered as essential to life, inasmuch as all nations
[Illustration: Plate 3
Genuine Ground Coffee.]
[Illustration: Coffee Adulterated with Chicory.]
use it; it prevents the wear and tear of the body. Now there is nothing
in chicory which can do that. Chemically there is no difference between
beetroot chicory and what is called real chicory; microscopically you
can discover the difference. If genuine coffee is sprinkled upon the
surface of a tumbler of water, it remains a considerable time floating,
and when it sinks it only slightly colours the water; chicory, on the
other hand, sinks quickly, and colours the water very deeply. Ground
coffee is enveloped in an oily substance, which prevents the water
absorbing; chicory has no such protection, and sinks immediately.
Mr. Phillips, the chemist to the Inland Board of Revenue, states that
the average per-centage of chicory to coffee, when sold mixed, was found
to range from 20½ to 16¾ per cent.
Public-domain text, read in full here on John Shaqi.
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