DIRECTIONS FOR IMPROVING PRODUCTION PROCESSES OF FEED YEAST BY PROCESSING OF HYDROLYSATES, OBTAINED BY ACID HYDROLYSIS OF VEGETABLE RAW MATERIALS
UDC 634.0.86
Key words: plant biomass, acid hydrolysis, hydrolysate, feed yeast, process improvement.
For citation: Boltovsky V. S. Directions for improving production processes of feed yeast by processing of hydrolysates, obtained by acid hydrolysis of vegetable raw materials. Proceedings of BSTU, issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2021, no. 2 (247), pp. 13−18 (In Russian). DOI: https://doi.org/10.52065/2520-2669-2021-247-2-13-18.
Abstract
This article analyzes the traditional technology of production of feed yeast from hydrolysates of plant raw materials and provides recommendations for improving the processes of liquid-phase acid hydrolysis of plant biomass, preparation of hydrolysate for biochemical processing and production of feed yeast, taking into account modern achievements of science, technology and technology, which provide the possibility of reducing energy consumption, increasing the yield of target products and reducing the environmental burden.
Improving the methods of hydrolysis of plant raw materials and obtaining feed yeast by subsequent processing of hydrolyzates is possible by changing the kinetic parameters of the process, methods of energy supply, technological modes and the design of the equipment used.
The most promising areas for improving the processes of implementing the main technological operations of hydrolysis of plant raw materials, preparation of hydrolysate for biochemical processing, fermentation, concentration of yeast suspension and drying of yeast can be the following: hightemperature hydrolysis of lignocellulose raw materials in continuous-action apparatuses, the use of modern designs of flotators, separators, fermenters and other equipment.
The cardinal solution to reduce energy consumption and increase the environmental safety of the production of protein-containing feed additives is a combination of acid hydrolysis of hemicelluloses and enzymatic hydrolysis of cellolignin or its direct bioconversion by microorganisms, which will eliminate the most energy-intensive technological processes from the technological process and the formation of large – capacity waste-hydrolysis of lignin.
References
- Khol’kin Yu. I. Tekhnologiya gidroliznykh proizvodstv [Technology of hydrolysis production]. Moscow, Lesnaya promyshlennost’ Publ., 1989. 496 p.
- Ogarkov V. I., Kiselev O. I., Bykov V. A. Biotechnological directions of using plant raw materials. Biotekhnologiya [Biotechnology], 1985, no. 3, pp. 1–15 (In Russian).
- Boltovskiy V. S. Hydrolytic processing of polysaccharide components of plant biomass: problems and prospects. Vestsi Natsyyanal’nay akademіі navuk Belarusi. Seryya khimіchnykh navuk [Proceedings of the National Academy of Sciences of Belarus. Chemical Series], 2014, no. 1, pp. 118–123 (In Russian).
- Korol’kov I. I. Perkolyatsionnyy gidroliz rastitel’nogo syr’ya [Percolation hydrolysis of plant raw materials]. Moscow, Lesnaya promyshlennost’ Publ., 1978. 263 p.
- Donald Armando G., Clark Tomas A. Characterization of oligosaccharides releazed by steam explosion of sulphar dioxide impregnated Pinus radiate. J. Wood Chem. and Technol., 1992, vol. 12, no. 1, pp. 55–78.
- Boltovskiy V. S. New methods of acid hydrolysis of plant raw materials. Vestsi Natsyyanal’nay akademіі navuk Belarusi. Seryya khimіchnykh navuk [Proceedings of the National Academy of Sciences of Belarus. Chemical Series], 2021, vol. 57, no. 1, pp. 119–128 (In Russian).
- Cantero Danilo A., Tapia Ángel Sánchez, Dolores Bermejo M., José Cocero M. Pressure and temperature effect on cellulose hydrolysis in pressurized water. Chemical Engineering Journal, 2015, vol. 276, pp. 145–154.
- Zhang M., Gong G., Hui K. S., Hui K. N. Hydrolysis of microcrystalline cellulose for fermentable hexose in supercritical water. Journal of Energy Engineering, 2015, vol. 141, no. 4, pp. 401–403.
- Boltovskiy V. S. Use of microwave energy for hydrolytic processing of plant raw materials, state and prospects. Trudy BGTU [Proceedings of BSTU], issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2020, no. 1, pp. 82–92 (In Russian).
- SVCh-energetika: v 3 tomach. Tom 2: Primeneniye energii sverkhvysokikh chastot v promyshlennosti [Microwave energy: in 3 vol. Vol. 2: Application of microwave energy in industry]. By ed. E. Okress. Moscow, Mir Publ., 1971. 271 p.
- Kharina M. V., Grigor’yeva O. N. Design features of reactors for acid hydrolysis of lignocellulosic raw materials. Vestnik tekhnologicheskogo universiteta [Technological University Bulletin], 2017, vol. 20, no. 13, pp. 143–150 (In Russian).
- Nurtdinov R. M. Effektivnost’ protsessa osakharivaniya solomy i otsenka kachestva gidrolizatov pri kul’tivirovanii sakharomitsetov. Avtoref. dis. kand. tekhn. nauk [Efficiency of the process of saccharification of straw and assessment of the quality of hydrolysates in the cultivation of saccharomycetes. Abstract of thesis cand. of tech. sci]. Kazan, 2012. 20 p.
- Skiba E. A., Momot T. O., Bychin N. V., Zolotuhin V. N. Enzymatic hydrolysis of lignocellulosic materials depending on the method of their preparation. Polzunovskiy Vestnik [The Polzunov Bulletin], 2013, no. 3, pp. 197–202 (In Russian).
- Vazetdinova A. A., Harina M. V., Loginova I. V., Kleshchevnikov L. I. Fermentolysis of cellulosecontaining residues of furfural production from plant waste. Bashkirskiy khimicheskiy zhurnal [The Bashkir Chemical Jornal], 2017, vol. 24, no. 1, pp. 27–31 (In Russian).
- Boltovskiy V. S. Teoriya i tekhnologiya kompleksnoy gidroliticheskoy pererabotki rastitel’nogo syr’ya [Theory and technology of complex hydrolytic processing of plant raw materials]. Minsk, BGTU Publ., 2014. 267 p.
