Issue №: 3(118)
The journal deals with the problems of vibration technologies and machines, mathematical methods of vibration process studies, information on design and technological development, presents teaching and methodological aspects of teaching in the Higher School of Applied Sciences, where vibration machines and technologies are studied.
TECHNOLOGICAL ASPECTS OF USING NON-FOOD RAW MATERIALS FROM FLOUR MILLING FOR BIOCONVERSION IN ETHANOL
Danilova Kateryna – Candidate of Technical Sciences, Senior Researcher, Scientific Secretary, Institute of Food Resources of National Academy Agrarian Science of Ukraine (4a, Evgena Sverstuka St., Kyiv, Ukraine, 02002, e-mail: dankoek77@gmail.com; http://orcid.org/0000-0001-6204-9975.
Levandovskiy Leonid – Doctor of Technical Sciences, Professor, Professor of the Department of Bioengineering, Bio- and Food Technologies Vinnytsia National Agrarian University (3, Sonyacna Str., Vinnytsia, Ukraine, e-mail: levandov7@gmail.com; http://orcid.org/0000-0001-5813-0447
Solomon Alla - Candidate of Technical Sciences, Associate Professor, Head of the Department of Bioengineering, Bio- and Food Technologies Vinnytsia National Agrarian University (3, Sonyacna Str., Vinnytsia, Ukraine), e-mail: soloalla78@ukr.net.
The decisive factor in the efficiency of ethyl alcohol production from starch-containing raw materials is the depth and completeness of starch and structural carbohydrate hydrolysis into monosugars using enzyme preparations of microbial origin. The degree of utilization of starch and cellulose introduced into the technological process largely depends on the preservation of enzymatic activity, which is determined by the parameters of raw material preparation for hydrolysis, the acidity of the medium, and the applied temperature regimes.
Prior to enzymatic hydrolysis, the mash was acidified to pH 5.0–5.2 with sulfuric acid, followed by liquefaction using amylolytic enzymes at a temperature of 75 °C. During the liquefaction stage, partial delignification of the cellulose-containing fraction of corn processing residues occurred as a result of acid hydrolysis, which promoted cellulose release and increased its availability for subsequent enzymatic conversion. Cellulose hydrolysis using cellulolytic enzyme preparations was carried out after the liquefaction stage at a temperature of 50 °C.
Saccharification and fermentation of the mash were performed under the SSCF regime, which ensured a reduction in energy consumption due to lower liquefaction temperature, decreased enzyme dosage as a result of preserved enzymatic activity, and more complete utilization of the cellulose-containing fraction of the raw material. As a result, the concentration of fermentable sugars and the efficiency of alcoholic fermentation increased. The yield of ethyl alcohol obtained from the fermentation of corn residues under the proposed conditions reached 68 dal/t of raw material, which is 2.9 dal/t higher than that achieved under conventional liquefaction conditions at 90 °C without the use of cellulase.
The obtained results can be applied in the development of energy-efficient technologies for processing starch-containing raw materials in the alcohol industry.
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About journal
The journal "Vibrations in engineering and technology" presents materials on the following issues
• Theory of processes and machines
• Mechanical Engineering and materialprocessing
• Processing and food production
The journal "Vibrations in Engineering and Technologies" is included in the list of technical scientific publications of Ukraine
(Category "B", Order of the Ministry of Education and Science of Ukraine dated July 2, 2020 No. 886)
Old version of the site: http://vibrojournal.vsau.edu.ua/
The journal "Vibrations in Engineering and Technology" is indexed by the following databases and catalogs:
The certificateof massmedia State registration:kv no 16643-5115 from 30.04.2010 .
Founder of the journal: Vinnytsia National Agrarian University
Kind of publication: journal
Type of publication : Scientific
Publication status: Domestic
Year of founding:
Periodicity: 4 times a year
Extent: 18.75 nominal printed pages
ISSN: 2306-8744 (printed version), (online)
Language of edition : (mixed languages) Ukrainian, English
The scope of the distribution and the category of readers: national, foreign, teaching staff, scientists, businessmen.
Periodical is included in the list of scientific professional editions of Ukraine approved by the Order of Ministry of Education and Sciences of Ukraine from 21.12.2015 No. 1328.
The journal "Vibrations in engineering and technology" is included in the "Catalogue of periodicals of Ukraine".
Journal subscription can be executed in each post office department.
Subscription Index is 99720.
Old version of site: http://vibrojournal.vsau.edu.ua/
In June 1994 the 2nd International Scientific and Technical Conference "Application of vibrations for technological purposes" was organized on the basis of Vinnytsia State Agricultural Institute. Leading experts in this field, noting the significant contribution to the school of Vibration Engineering under the leadership of P. S. Bernyk, proposed to create a professional all-Ukrainian scientific and technical journal "Vibration in engineering and technology..The journal was foundedat Vinnytsia State Agricultural Institute and P.S. Bernyk was elected to be the chief editor .
For all these years (since 1994) theJournal "vibration in engineering and technology" published 94 issues wherestudy of vibration effects, the creation of progressive energy saving technologies and equipment for their implementation were highlighted.
Currently Kaletnik H.M PhD , professor, academician NAAS is the chief editor of the "Vibrations in engineering and Technology"
The journal "Vibration in Engineering and technology", which has no analogues on the territory of Ukraine, is well known abroad.
