Gleanings

Abstract

Better Yeast is Made.A new process for the manufacture of bakers'yeast-conceived.researched and developed in Australia.is now on the way improving the world's yeast industry and the world's bread.The new yeast has infinitely supetior qualities and keeps for long periods without deteriorating even in a warm climate.It is known as the 'Deloffre Alcohol Process'after its inventor who took out world patent rights in 1940.Under the new process. many materials,additional to those generally employed.can be used but the yeast is formed in one operation.instead of several,by inculating a highly concentrated sugar solution with a small culture of pure yeast.which is then fermented to produce a maximum quantity of alcohol.This is then used to form yeast under special conditions,produced to set up the required biological reactions under which yeast can about alcohol.Advantages of the process are many.Not only does it simply the process of manufacture,but it reduce cost of production by about 30 per cent.while increasing the yield by from 20to25per cent.One reason for the great saving in cost is that the mixture can be worked in much more highly concentrated forms than previously.Due to the high proportion of alcohol in the fermenting liquid.fermentation takes place under almost sterile conditions.The several operations necssary with the older processes made the growth of bacteria difficult to prevent.Further,the new process yeast is of exceedingly high keeping quality.because the alcohol reduces considerably the content of potease enzyme which is the agent of decomposition.Delofre Process yeast has greater baking qualities with its substantially greater levening powers.since it reacts in higher degree on the flour to generate a greater quantity of carbon dioxide gas.Less yeast need be used and because of its higher keeping quality.immediate use is not so necessary.During the war.when beet molasses was unobtainable.wheat starch was transformed into glucose which.in turn,was transformed into alcohol for use in the Deloffre Process.For manufacture of the yeast.a special all-steel building was designed and equipped with machinery almost entirely Australian-made.Pipelines for conveying the mixture from apparatus to apparatus wee kept at minimum length while ensuring production of yeast,untouched by hand,that had good lasting qualities.They were so constructed that proper sterlisation was possible after each operation.Entire process was automatic.Australia used something like 8,000,000lb.of baker's yeast each year.By 1948,some 80 per cent of the fresh yeast used in Australia for baking purpose was made by the Deloffre Alcohol Process.

DOI

https://doi.org/10.29321/MAJ.10.194919

Pages

101 - 101

Creative Commons

Copyright

© The Author(s), 2026. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

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