Process for the Purification or Refining of Protoplasm Extracted from Yeast.
Year: 1899

page_text: Date of Application (in United Kingdom), 26th Apr., 1899
Complete Specification Left, 26th Jan., 1900-Accepted, 10th Mar., 1900
Process for the Purification or Refining of Protoplasm Extracted from
Yeast.
1, EMILE DE MEULEMEESTER, of 54, Rue de Neuchatel, Brussels, in the Kingdoni
of Belgium, do hereby declare the nature of this invention to be as follows:-
This invention has for its object a process for the purification or refining of raw
protoplasm extracted from yeast for the purpose of eliminating from it the matters
capable of imparting to it a disagreeable taste and smell.
In accordance with this process, a quantity of animal black or wood-charcoal
or a mixture of these two materials is mixed with the raw protoplasm of the
yeast before any transformation or peptonisation whatever.
The mixture is stirred from 2 to 5 hours according to the temperature at which
it is worked, then it is filtered by means of a filter-press or with any appropriate
filter whatsoever.
The yeast extract can likewise be refined or purified after it has been trans-
formed by peptonisation, by mixing a certain quantity of wood-charcoal with the
products peptonised.
Date Wildcom day of April 1899.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and 25, Cross Street, Manchester, Agents.
Process for the Purification or Refining of Protoplasm Extracted from
Yeast.
I, EMILE DE MEULEMEESTER, of 54, Rue de Neuchatel, Brussels, in the Kingdom
of Belgium, do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
This invention has for its object a process for the purification or re-fining of

page_text: raw protoplasm extracted from yeast for the purpose of eliminating from it the
matters capable of imparting to it a disagreeable taste and smell.
In accordance with this process, a quantity of animal black or wood charcoal
or a mixture of these two materials is mixed with the raw protoplasm of the
yeast before any transformation or peptonization whatever takes place.
The mixture is stirred for a period of time varying from about 4 to 24 hours,
according to the temperature employed and is then filtered by means of a filter
press or any other suitable filter. The extract of yeast may likewise be refined
or purified after it has been transformed by peptonization by mixing a certain
quantity of wood charcoal with the peptonized products. The operation may be
carried out in the following manner:-
To 100 kilogrammes of protoplasm 2 to 4 kilos. of powdered wood charcoal or
animal charcoal is added. The mixture is then stirred for a period of from 12
to 24 hours, and is afterwards filtered.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1st: The employment of wood charcoal or animal black for purifying or
refining protoplasm extracted from yeast.
2nd: A method of purifying or refining protoplasm extracted from yeast by
adding to the yeast animal black or wood charcoal or a mixture of these 2
materials, and afterwards stirring the mixture, and filtering the same.
220
1
T
1000
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and 25, Cross Street, Manchester, Agents.