Kvasny Prum. 1959; 5(3): 67-71 | DOI: 10.18832/kp1959007

Some technological problems of manufacturing high quality lactic acid.Peer-reviewed article

K. POCHOBRADSKÝ

From numerous technological problems arising in plants manufacturing high quality lactic acid designed for food industries, the complexometric method has been studied in its applications to the control of fermenting process and to the regulation of crystallization yield. The effect of epuration of mash has been verified by experiments as also the application of rotating vacuum filters to eliminate some difficult and labour-consuming operations. Together with molasses some fo reign matters - very undesirable from organoleptic point of view - are brought into the manufacturing process and their presence necessitates some kind of thorough affining. This fact diminishes the importance of molasses as raw material for material for manufacturing high quality lactic acid. The complexometric method enables to follow course of fermentation in its individual stages and may be recommended for introduction and has favourable effect upon the quality of final product. The complexometric analysis of crystallization of calcium lactate confirms that it is desirable to eliminate this operation from the technological scheme by using raw material of better quality. The rotary vacuum filters perform satisfactorily when filtering epured mass, but their affining efficiency is low and they cannot be recommended for calcium lactate filtering. A centrifuge is better for this operation, though by no means quite satisfactory.
(In Czech, English summary only)

Keywords: lactic acid, production, complexometric method

Published: March 1, 1959