RUPAC2018 - List of Authors (Filippovich, V.P.)

Paper	Title	Page
TUPSA45	Provision of Dose Homogeneity in Experiments for Developing Methods of Food Irradiation	236
	P.A. Bystrov IPCE RAS, Moscow, Russia V.P. Filippovich RRICT, Vidnoye, Russia A.V. Prokopenko MEPhI, Moscow, Russia S.N. Puchkov, N.E. Rozanov MRTI RAS, Moscow, Russia
	At present, interest is growing in the use of an electron beam irradiation for preserving food, which is a more efficient technology than gamma irradiation. This technology has long been applied to the disinfection of dry products having a low density. When processing objects having a density comparable to that of water, an inhomogeneous radiation dose profile may arise due to the insufficient penetrating power of the electron beam. This makes difficult to conduct correct studies. In IPCE RAS the research on the irradiation of food products and test tubes with model media on a radiation installation based on the UELV-10-10-C-70 accelerator with electron energy of 6-10 MeV is carried out. The sizes of irradiated objects often do not allow making an unambiguous conclusion about the uniformity of radiation doses in experiments. In order to find the distribution profile of doses in the objects of the study, the irradiation process is modeled using a specially modified computer code "BEAM SCANNING". In this program, the object is specified as the combination of primitive forms - a cone, a cylinder, a rectangle and a sphere, which is enough for modeling typical forms of objects, used in experiments. Calculations for cylinders and spheres simulating experimental objects-test tubes with model media and spherical products have been performed. The distributions of radiation doses in this objects are presented, methods for increasing the dose homogeneity in experiments are proposed.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-TUPSA45
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TUPSA46	Effect of Ozone in Experiments on the Development of Food Irradiation Methods	240
	P.A. Bystrov, Y.S. Pavlov, O.V. Souvorova IPCE RAS, Moscow, Russia V.P. Filippovich, N.V. Iluhina RRICT, Vidnoye, Russia
	During sterilization by electron beam ozone is formed in the air, which increases the efficiency of microorganism suppression. When studying the processes of radiation sterilization, it is necessary to estimate the contribution of the chemical factor of ozone formation. The results of experiments on the irradiation of several cultures of microorganisms are presented, which make possible to evaluate the degree of influence of the ozone formation factor in air radiolysis. In experiments, the dependence of the degree of microbial suppression on the method of installing a test tube with a nutrient medium under a beam of an accelerator was investigated. Irradiation was carried out with horizontal and vertical installation of test tubes with cultures. With the horizontal, the size of the area of contact between the medium and the ozonized air inside the tube is higher than in the vertical tube. The effect of irradiation with a horizontal position of the tube is higher than with the vertical arrangement. The irradiation process was monitored by film dosimeters located near and inside the test tubes with a substrate analog. The calculations of the amount of ozone produced in the experiments were performed, and simulation of the irradiation process was carried out using the computer code "Beam Scanning". From the results of this study we conclude that ozone formation has a significant effect on the suppression of microorganisms during irradiation.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-TUPSA46
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TUPSA47	Regularities of Inhibition of Conditionally Pathogenic Microflora Under the Influence of Accelerated Electron Beams	243
	A.V. Prokopenko MEPhI, Moscow, Russia V.P. Filippovich, A.Yu. Gracheova, N.V. Iluhina RRICT, Vidnoye, Russia A.V. Gordeev Burnasyan Federal Medical Biophysical Center, Federal Medical Biological Agency, Moscow, Russia Y.S. Pavlov IPCE RAS, Moscow, Russia
	Article is devoted to the study of the irradiation efficiency of model systems containing conditionally pathogenic microorganism by electron beams with energy of 7 and 10 MeV. The research on the effectiveness of inhibition of the initial degree of inoculation of the microorganisms E. coli and Salmonella were carried out. Irradiation doses up to 10 kGy performed at radiation-technological installations the A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS and State Research Center Burnasyan Federal Medical Biophysical Center. The results of the effective inhibition of initial contamination degree for the two samples, which model liquid and solid nutrient media, were obtained. It is shown that it is necessary to take into account not only the effectiveness of microorganism inhibition on specific products, but also the installation efficiency for a particular sample.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-TUPSA47
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Provision of Dose Homogeneity in Experiments for Developing Methods of Food Irradiation

236

P.A. Bystrov
IPCE RAS, Moscow, Russia
V.P. Filippovich
RRICT, Vidnoye, Russia
A.V. Prokopenko
MEPhI, Moscow, Russia
S.N. Puchkov, N.E. Rozanov
MRTI RAS, Moscow, Russia

At present, interest is growing in the use of an electron beam irradiation for preserving food, which is a more efficient technology than gamma irradiation. This technology has long been applied to the disinfection of dry products having a low density. When processing objects having a density comparable to that of water, an inhomogeneous radiation dose profile may arise due to the insufficient penetrating power of the electron beam. This makes difficult to conduct correct studies. In IPCE RAS the research on the irradiation of food products and test tubes with model media on a radiation installation based on the UELV-10-10-C-70 accelerator with electron energy of 6-10 MeV is carried out. The sizes of irradiated objects often do not allow making an unambiguous conclusion about the uniformity of radiation doses in experiments. In order to find the distribution profile of doses in the objects of the study, the irradiation process is modeled using a specially modified computer code "BEAM SCANNING". In this program, the object is specified as the combination of primitive forms - a cone, a cylinder, a rectangle and a sphere, which is enough for modeling typical forms of objects, used in experiments. Calculations for cylinders and spheres simulating experimental objects-test tubes with model media and spherical products have been performed. The distributions of radiation doses in this objects are presented, methods for increasing the dose homogeneity in experiments are proposed.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-TUPSA45

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA46

Effect of Ozone in Experiments on the Development of Food Irradiation Methods

240

P.A. Bystrov, Y.S. Pavlov, O.V. Souvorova
IPCE RAS, Moscow, Russia
V.P. Filippovich, N.V. Iluhina
RRICT, Vidnoye, Russia

During sterilization by electron beam ozone is formed in the air, which increases the efficiency of microorganism suppression. When studying the processes of radiation sterilization, it is necessary to estimate the contribution of the chemical factor of ozone formation. The results of experiments on the irradiation of several cultures of microorganisms are presented, which make possible to evaluate the degree of influence of the ozone formation factor in air radiolysis. In experiments, the dependence of the degree of microbial suppression on the method of installing a test tube with a nutrient medium under a beam of an accelerator was investigated. Irradiation was carried out with horizontal and vertical installation of test tubes with cultures. With the horizontal, the size of the area of contact between the medium and the ozonized air inside the tube is higher than in the vertical tube. The effect of irradiation with a horizontal position of the tube is higher than with the vertical arrangement. The irradiation process was monitored by film dosimeters located near and inside the test tubes with a substrate analog. The calculations of the amount of ozone produced in the experiments were performed, and simulation of the irradiation process was carried out using the computer code "Beam Scanning". From the results of this study we conclude that ozone formation has a significant effect on the suppression of microorganisms during irradiation.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-TUPSA46

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSA47

Regularities of Inhibition of Conditionally Pathogenic Microflora Under the Influence of Accelerated Electron Beams

243

A.V. Prokopenko
MEPhI, Moscow, Russia
V.P. Filippovich, A.Yu. Gracheova, N.V. Iluhina
RRICT, Vidnoye, Russia
A.V. Gordeev
Burnasyan Federal Medical Biophysical Center, Federal Medical Biological Agency, Moscow, Russia
Y.S. Pavlov
IPCE RAS, Moscow, Russia

Article is devoted to the study of the irradiation efficiency of model systems containing conditionally pathogenic microorganism by electron beams with energy of 7 and 10 MeV. The research on the effectiveness of inhibition of the initial degree of inoculation of the microorganisms E. coli and Salmonella were carried out. Irradiation doses up to 10 kGy performed at radiation-technological installations the A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS and State Research Center Burnasyan Federal Medical Biophysical Center. The results of the effective inhibition of initial contamination degree for the two samples, which model liquid and solid nutrient media, were obtained. It is shown that it is necessary to take into account not only the effectiveness of microorganism inhibition on specific products, but also the installation efficiency for a particular sample.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-TUPSA47

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)