Yeast Biomass Use Optimization in the Wine Champanization Unit Biogenerator

Abstract

The yeast biomass use optimization in continuous wine champagnization plants has been the research and development subject for many years aimed at improving processes and devices in the sparkling wines production. At the same time, a man pays careful attention to the possibility of enriching the champagnized wine with biologically active substances and surfactants generated by yeast. The work aim is to increase the process efficiency of enriching champagnized wine with biologically active substances and surfactants. The development subject is a new technology for the rational yeast biomass use, involving submitted recirculation circuit introduction with the yeast cells separation and their return to the technological cycle without stopping the flow; as well as design modernization of the biogenerator apparatus and membrane microfiltration module calculation. A man suggested to divide the biogenerator apparatus into four sections equal in volume by transverse perforated partitions made of flat steel sectors, laid on knife-edge, filled with attachments: in the first section there is a regular packing with a corrugated profile and a channel width of 50 mm, in the second section – an irregular dump packing of the Lessing rings 30×30 mm type, in the third and fourth sections there are similar packings with 20×20 mm and 10×10 mm feature sizes, respectively. As a result of the improved technology, the product is enriched with biologically active substances and surfactants. An increase in the number of cells released from the layers adhered to the sorbent intensifies the mass exchange processes between yeast and wine material. Tests of the upgraded biogenerator in production conditions demonstrated that the single fully autolysated cells yield increased by 2.7 times (from 0.2·106 to 0.55·106 cells/ cm3 ), which indicated a positive mass transfer dynamic by biologically active substances and surfactants cells, and consequently, the process effectiveness aimed at the finished products quality improvement.