BIOCONVERSION OF CORN GRAIN COMPOUNDS TO OBTAIN BIOETHANOL

Authors

  • Volodymyr Khomichak Institute of Food Resources of the National Academy of Agrarian Sciences, Kyiv, Ukraine
  • Inha Kuznіetsova Institute of Food Resources of the National Academy of Agrarian Sciences of Ukraine, Kyiv, Ukraine
  • Sergii Oliynychuk Institute of Food Resources, National Academy of Agrarian Sciences, Kyiv, Ukraine
  • Olga Koval Institute of Food Resources, National Academy of Agrarian Sciences, Kyiv, Ukraine

DOI:

https://doi.org/10.18372/2310-5461.68.20744

Keywords:

bioethanol, corn, enzyme preparations, proteolysis, bioconversion, fermentation, hydrolysis

Abstract

The paper shows that starch-containing raw materials are one of the promising types of raw materials for bioethanol production due to the high conversion rate and yield of bioethanol. Currently, leading countries in the world are switching to the use of bioethanol and also use non-traditional raw materials for its production. Ukraine, due to agro-climatic conditions, is rich in the production of starch-containing raw materials. A significant proportion of grain raw materials is substandard (for example, substandard corn grain) and is not use for food purposes. Such raw materials are promising starch-containing raw materials for processing into bioethanol. Intensification of alcohol production has a number of technological solutions aimed at increasing the yield of alcohol, one of which is proteolysis. Many scientific studies have been devoted to the study of the issue of proteolysis, while the use of modern commercial enzyme preparations requires further development of this area. The studies used modern drugs that are common at alcohol enterprises. Studies have shown that the action of the proteolytic enzyme preparation softens the structure of the starch-protein matrix and intensifies its destruction during heating. This allows you to adjust the mash dilution mode by using proteolytic and amylolytic enzyme preparations, reduces the viscosity of the mash, reducing its value by 60.4%, compared to the mash in which there is no enzyme preparation. The use of proteolysis during saccharification contributed to the intensive accumulation of sugars, the reason for which is the synergism of the action of protease and glucoamylase preparations. It established that the quality indicators of the matured mash show the effectiveness of the use of the proteolytic enzyme preparation during the dilution of corn mash. In addition, adjusting the process of bioconversion of corn raw materials and significantly shorten the saccharification process. It has been proven that proteolysis improves the saccharification process and provides the wort with easily digestible nitrogen nutrition, the yeast generation process and increases the alcohol yield by 0.4 dal/t of raw material.

Author Biographies

Volodymyr Khomichak, Institute of Food Resources of the National Academy of Agrarian Sciences, Kyiv, Ukraine

Postgraduate student

Inha Kuznіetsova, Institute of Food Resources of the National Academy of Agrarian Sciences of Ukraine, Kyiv, Ukraine

Doctor of Agricultural Sciences, Candidate of Technical Sciences, Senior Researcher

Sergii Oliynychuk, Institute of Food Resources, National Academy of Agrarian Sciences, Kyiv, Ukraine

Doctor of Technical Sciences, Senior Researcher

Olga Koval, Institute of Food Resources, National Academy of Agrarian Sciences, Kyiv, Ukraine

Candidate of Technical Sciences Senior Researcher

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Published

2026-02-10

How to Cite

Khomichak, V., Kuznіetsova I., Oliynychuk, S., & Koval, O. (2026). BIOCONVERSION OF CORN GRAIN COMPOUNDS TO OBTAIN BIOETHANOL. Science-Based Technologies, 68(4), 607–615. https://doi.org/10.18372/2310-5461.68.20744

Issue

Vol. 68 No. 4 (2025)

Section

Ecology, chemical technology, biotechnology, bioengineering

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