Theoretical Evaluation of the Region of Existence of Technological Solutions for the Biotechnological Process of Producing Lactic Acid

The results of a theoretical analysis with an assessment of technological indicators that provide the possibility of real implementation of a continuous biotechnological process for obtaining lactic acid are presented. The analysis was carried out using mathematical modeling, including accounting for the formation of a product, biomass, and by-product. The main substrate consumed by microorganisms and the component that forms the main substrate in the synthesis process are considered as raw materials. In the analysis, two problems were solved: determining the range of values of the input indicators that ensure the real implementation of the technology for a given value of productivity for the target product (lactic acid) and assessing the multiplicity of input indicators for a given value of one of them. Analytical relationships for calculating the multiplicity indicators for points limiting the region of real implementation of the process are presented. Examples of numerical calculations that implement theoretical conclusions are given. The results of numerical calculations have shown significant user capabilities in the choice of the initial process indicators for the implementation of the technology with the same value of productivity.