A NEW OR IMPROVED PROCESS FOR THE MANUFACTURE OF GLUCOSE
Year: 1883

page_text: LETTERS PATENT to Herbert John Haddan, of Kensington, Middlesex for an
Invention of A NEW OR IMPROVED PROCESS FOR THE MANUFACTURE OF
GLUCOSE communicated to him from abroad by Constant Coster, of Bruxelles,
in the kingdom of Belgium
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at the
Office of the Commissioners of Patents on the 13th September 1883.
HERBERT JOHN HADDAN, of Kensington, Middlesex, "A NEW OR IMPROVED
PROCESS FOR THE MANUFACTURE OF GLUCOSE," a communication to me from abroad
by Constant Coster, of Bruxelles, in the kingdom of Belgium,
This invention relates to the manufacture of grape sugar or glucose by
substituting the tubercles and stems of Jerusalem artichoke for the starchy or
ligneous materials hitherto used.
For this purpose the tubercles of the Jerusalem artichoke are first washed with
the utmost care, then cut into small slices with a root-cutter, and powdered by
means of a rasp, similar to those used for beetroots or potatoes.
These slices or powders are then macerated in a tank, and saccharified by means
of water mixed with sulphuric acid.
In this manner I obtain a sweet sirup containing a certain quantity of sulphuric
acid; afterwards the sirup is put in tanks for neutralizing the acid.
To extract the free acid I proceed exactly in the same way as in the usual
treatment of starch, that is to say. I add a sufficient quantity of carbonate of lime
to saturate the sirup.
The neutralized sirup is now left to settle and clarify, and is then heated
sufficiently to obtain by cristallisation a deposit of grape sugar or glucose.
The stems of the Jerusalem artichokes may be treated by crushing and
macerating the same and finally saccharifying them with or without pressure.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Herbert John Haddan in the Patent Office on the 11th March
1884.
HERBERT JOHN HADDAN, of Kensington, Middlesex, "A NEW OR IMPROVED
PROCESS FOR THE MANUFACTURE OF GLUCOSE," a communication to me from abroad
by Constant Coster, of Bruxelles, in the kingdom of Belgium,
This invention has for its object to produce grape sugar or glucose from the
tubercles and stems of the Jerusalem artichoke.
In the manufacture hereinafter described the tubercles and stems of the
Jerusalem artichoke entirely replace the starchy or ligneous materials which have
hitherto formed the raw material in the production of glucose.
In carrying out this invention I may apply almost the same processes and the
same apparatus usually applied in the production of glucose from starch, but
preferably I proceed as follows:
The tubercles of the Jerusalem artichoke are first carefully and thoroughly
washed and then cut into fine slices by means of a root cutter, or reduced to a
pulp by means of a rasp similar to those used for rasping beetroots or potatoes.
The juice obtained from these slices or from the pulp, by maceration in a
reservoir with or without the use of steam pressure, or by means of a strong press,
is saccharified by means of water mixed with sulphuric acid or with any other
substance capable of producing saccharification. By thus treating the tubercles of
the Jerusalem artichoke, I obtain a sweet syrup containing, however, a portion
of the sulphuric acid used. This syrup is subsequently placed in a tank for
neutralizing the acid. To remove the free acid contained in the syrup I proceed
in the same way as in the treatment of fecula or starch, that is to say, I add to the
liquid in the tank a sufficient quantity of carbonate of lime to saturate the
sulphuric acid employed for the saccharification, thereby separating the acid from
the syrup.
After the syrup has been thoroughly neutralized and left to settle and clarify, it
is heated sufficiently, (as in the ordinary manufacture of glucose) to produce the
rocky crystals forming the grape sugar generally known in commerce as glucose.
According to the bigher or lower degree of concentration of the syrup, I obtain,
as in the ordinary manufacture, a glucose in the shape of solid coherent or of
granulated crystals.
For the production of alcohol from the glucose of the Jerusalem artichoke, the
glucose is subjected to fermentation, when still in the liquid state, without previous.
neutralization, the acid contained in the liquid glucose serving to facilitate the
fermentation.
The stems of the Jerusalem artichoke may be treated by crushing and macerating
the same, and finally saccharifying them with or without pressure.
CLAIM.
CLAIM.
The use of the tubercles and stems of the Jerusalem artichoke for the manufacture
of liquid or solid glucose, substantially as described.
In witness whereof I, the said Herbert John Haddan, have hereunto set my hand
and seal this 11th day of March. A.D. 1884.
TT T HADDAN (0)