https://repository.utm.md/handle/5014/26164 2026-04-26T12:02:24Z https://repository.utm.md/handle/5014/26900 Destructive activity of microorganisms in relation to glycol ethers NARKEVICH, D.; HLUSHEN, A. The destructive activity of the bacterial strains against 2-butoxyethanol was evaluated. The experiment was carried out in flasks containing tap water, iron salts and glycol ether at a concentration of 0.05% as the only carbon source. This concentration was chosen because the most common concentration of glycol ether in wastewater was 100 – 600 mg/l. As a result of these studies, it was shown that the culture of Rhodococcus sp. VOC-5 and unclassified strain JD 4.1 most actively utilize 2-butoxyethanol. 2022-01-01T00:00:00Z https://repository.utm.md/handle/5014/26893 Growth and sporulation of Beauveria bassiana on different culture media MOLDOVAN, A.; IVANTOC, N.; MUNTEANU-MOLOTIEVSKIY, N. The B. bassiana CNMN-FE-01 strain's vegetative growth was studied on several nutrient media for 14 days at a constant temperature of 25°C. As a result, B. bassiana CNMN-FE-01 strain can be successfully cultivated on various solid media, commercially available formulations, and media prepared in the laboratory. The maximum radial growth rate of the micromycete was recorded on the Oatmeal Agar medium. Also, on Oatmeal Agar, the local strain produces the highest number of viable conidia. The experimental data indicate that the micromycete growth rate differs depending on the culture medium used. The same culture medium but from different producers can induce distinct growth and sporulation patterns of the fungal strain. The presented scientific results were financially supported by the project 20.80009.7007.12 “Diversity of hematophagous arthropods, zoo - and phytohelminths, vulnerability, strategies to tolerate climatic factors and the elaboration of innovative procedures for the integrated control of species with socio-economic value” – DIVZOO. 2022-01-01T00:00:00Z https://repository.utm.md/handle/5014/26884 Study of the adsorption of Bacillus subtilis on different fractions of activated carbons obtained from apple wood LUPAȘCU, L.; PETUHOV, L.; LUPAȘCU, T.; TIMBALIUC, N. The paper presents the results of scientific research related to the study of adsorption processes of Bacillus subtilis bacteria on activated carbon obtained from apple wood. The activated carbons used have a specific BET area of about 2018 m2 /g and a total sorption volume of the pores equal to 1,573 cm3 /g. The peak of the adsorption is noticed after 120 minutes of contact. The sorption capacity of the activated carbon of the fraction 630- 800 μm obtained from apple wood is 2 times higher than in the case of the 800-2000 μm fraction of the same carbons for the B. subtilis bacterial species. This research was carried out with the financial support of the institutional project “The reduction of the environmental and health impact of toxic chemicals through use of adsorbents and catalysts obtained from local raw material” DISTOX, No 20.80009.7007.21. 2022-01-01T00:00:00Z https://repository.utm.md/handle/5014/26880 Some features of cultivation of the actinobacterium Saccharopolyspora spinosa LUNGU, A. Actinobacteria (actinomycetes) are in the center of attention because these bacteria produce a variety of natural drugs and other biologically active metabolites, including: antibiotics, enzymes, inhibitors. The strain Saccharopolyspora spinosa DSM-44228 was used for the experiments. Cultivation was carried out in the initial stages on agar medium and then moved to deep cultivation on liquid medium. We have been able to achieve good growth and sporulation over 7 days on agar medium. On liquid medium we have developed two compositions on which there was a good accumulation of biomass, but they have not yet been determined the amount of produced Spinosad. We are going to carry out the optimization of the medium to achieve a maximum possible production of biomass. Research was carried out within the project of the State Program 20.80009.7007.04 “Biotechnologies and genetical processes for evaluation, conservation and exploitation of agrobiodiversity”, financed by the National Agency for Research and Development. We thank Leibniz Institute, DSMZ-German Collection of Microorganisms and Cell Cultures GmbH for granting S. spinosa strain DSM 44228. 2022-01-01T00:00:00Z