Uman NUH | today: 06/29/2020

EVALUATION OF MICROBIOLOGICAL STATE OF FODDER MIXTURES IN THE PROCESS OF THEIR STORAGE

Author(s) Ulianych I. F. , PhD of Technical Sciences, , Uman National University of Horticulture
Kostetska K.V., , Lecturer of Department of Technology of Storage and Processing of Grain (Faculty of Engineering and Technology) Uman National University of Horticulture, Uman National University of Horticulture, Ukraine
, , ,
Category Microbiology
year 2017 issue №1, 2017
pages 29-33 index UDK 664.76:579.67
DOI
Abstract Data on changes of microbiological state of developed fodder mixtures from grain of forage barley and maize and a number of fruit and vegetable components in different concentrations were presented in the article. Work was carried out in the laboratories of the Department of Technology of Storage and Processing of Grain and the Department of Biology of Uman National University of Horticulture as well as the Department of Storage and Processing of Grain of National University of Food Technologies. The purpose of the paper was to study the changes of microbiological indexes of fodder mixtures in the process of their storage. Study in fresh-produced products and during their storage for 30 and 60 days was done by the following microbiological parameters: total number of microbial cells (MAFAM – mesophilic aerobic and facultative anaerobic microorganisms, CFU/g); presence of bacteria of paratyphoid group (salmonella); presence of enteropathogenic strains of coliform bacterium (bacteria of colibacillus group, CFU/g), presence of anaerobes. Research samples were stored in conditions adopted in practice of mixed fodder plants under the temperature of 0 °С and 20 °С corresponding to winter and summer period. Relative air humidity was 70 ... 80 %. It was noted that indexes of total number of microbial cells for all samples of fodder extruded products did not exceed permissible standards (no more than 5∙105 CFU/g). The authors mentioned that mesophilic aerobic and facultative anaerobic microorganisms increased by 15–40 times, but did not exceed limits for fodders of 5∙105 in the process of fodder mixtures storage. Also humidity of extruded mixtures by moisture sorption from the air increased in the process of storing. Thus, developed extruded fodder mixtures in the process of storage for two months did not get toxic properties; total number of microbial cells for all samples did not exceed permissible standards. Therefore, they can be used for fattening of farm animals during all the term of storage.
Key words grain, fruit and vegetable components, fodder mixtures, microbiological state, storage
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