Articole din publicaţii internaţionale
http://repository.utm.md/handle/5014/8302
2024-03-28T22:32:11ZThe use of some exometabolites from micromycetes for the fortification of resistance indices in bee
http://repository.utm.md/handle/5014/26708
The use of some exometabolites from micromycetes for the fortification of resistance indices in bee
BUGNEAC, Veronca; STARCIUC, Nicolae; SÎRBU, Tamara
The goal of the proposed research was focused on the use of exometabolites of micromycetes to increase the physiological resistance of bee families after the winter period, as well as to stimulate their productive indices. From the 21 strains of micromycetes taken from the National Collection of Nonpathogenic Microorganisms of the Institute of Microbiology and Biotechnology, TUM, were selected 3 strains (Ps.sp.11, Ps.sp.19 and Ps.sp.62) which showed more productive indices of the development on culture media, as well as more pronounced bactericid properties. Exometabolites were prepared from the mentioned strains and administered to 3 experimental grups of bee familes in doses of 10, 25 and 50 ml per kg of wheat flour cakes. The productive indices of the bee families were examined over 12, 24 and 36 days after the administration of the biomass of exometabolites. As a result, it was established that the highest index - 47.1 squares of hatched brood, was registered at 24 days after the administration in the 1st experimental group of bees which was fed with a dose of 25ml/kg of wheat flour cakes. The difference between this group and the control group was 19.4 squares of hatched brood. At the same time, the honey collection per beech was 3.4 kg in the 1st experimental group of bees, representing 0.8 kg more compared to the control group and the prolificacy index was 34.5% higher compared to the control group.
2023-01-01T00:00:00ZAntifungal indices of some strainsof micromycetes against mycotic infections of Apis melifera
http://repository.utm.md/handle/5014/26707
Antifungal indices of some strainsof micromycetes against mycotic infections of Apis melifera
STARCIUC, N.; BUGNEAC, Veronica
The propose of study had served 21 strains of micromycetes from the National Collection of Non-pathogenic Microorganisms from Institute of Microbiology, Academy of science of Moldova and two pathogenic strains – Aspergillus flavus and Aspergillus niger. The tested strains were isolated from soil samples taken from the central zone of Moldova. As nutrient medium for isolation, of micromycetes served malt agar, Czapek, Sabouraud-Amidono and ammonium. Isolation of strains was performed in thermostat at temperature 28oC, during 14 days. As a result of screening were selected two strains SP.62 and SP. 97 with potential antifungal increased against Aspergillus flavus pathogen with higher antifungal actions against petrified offspring of bees. The diameter of inhibition zone of Aspergillus flavus was on the strain SP. 62 - 30 mm, and of the strain p. SP. 97 - 35 mm.
2016-01-01T00:00:00ZContent of amino acids in blood serum in sows with idiopathic hipogalaxy
http://repository.utm.md/handle/5014/26702
Content of amino acids in blood serum in sows with idiopathic hipogalaxy
GURDIS, Viorica
Hipogalaxy is the result of some pathological processes occurred in gestation which are manifested by hormonal deviation and deviation of some metabolic processes. A particular content of amino acids is necessary for a normal vital activity of the body and an adequate metabolism. By this experiment it was observed the influence of amino acids over the lactation. The results of amino acids screening in sows attest that their values in hypogalactic sows are different from those of the animals with a normal lactation by the reduced content of cysteine and tryptophan in the serum and the content of tyrosine significantly increased. The achieved results can be indicated for the precocious diagnosis of hypogalaxy.
2017-01-01T00:00:00ZAntibacterial potential of berries powder extracts
http://repository.utm.md/handle/5014/26686
Antibacterial potential of berries powder extracts
COJOCARI, Daniela
The purpose of this research was to investigate the antimicrobial properties of berries powders against pathogenic microorganisms, responsible for food alteration. The following autochthonous fruit from berries and groats were used: rosehip (Rosa canina), white sea buckthorn (Hippophae rhamnoides), hawthorn (Crataegus monogyna), grapes and aronia (Aronia Melanocarpa).The bacterial strains used as test organisms are S. aureus ATCC 25923, E.coli ATCC 25922, B. subtilis, S. Aboni, K. pneumoniae ATCC 13883. Antimicrobial activity was screened by an agar well diffusion method and bacterial growth was measured in liquid culture. For determination of MIC and MBC was done dilution technique.
2022-01-01T00:00:00Z