Articole ştiinţifice: Recent submissions

  • Excitonic spectra and energy band structure of ZnAl2Se4 crystals 
    SYRBU, N. N.; ZALAMAI, V. V.; TIRON, A. V.; TIGINYANU, I. M. (Elsevier, 2015)
    Absorption, reflection and wavelength modulated reflection spectra were investigated in ZnAl2Se4 crystals. The energy positions of ground and excited states for three excitonic series (А, В and С) were determined. The main ...
  • Excitonic spectra of TlGaSe2 crystals 
    SYRBU, N. N.; ZALAMAI, V. V.; BEJAN, N. P.; TIRON, A. V. (Editura Academiei Romane, 2015)
    The indirect transitions in excitonic region with phonons emission in absorption spectra of TlGaSe2 crystals and ground and excited states of four excitonic series A, B, C and D were observed. The parameters of excitons ...
  • The interference of birefractive waves in ZnAl2Se4:Co2+ crystal 
    SYRBU, N. N.; ZALAMAI, V. V.; TIRON, A.; TIGINYANU, I. M. (Elsevier, 2016)
    The anisotropy of reflection, transmission and wavelength modulated reflection and transmission optical spectra of ZnAl2Se4 crystals doped by cobalt were investigated at 10 and 300 K. Intersections of refractive indices ...
  • Optical properties and birefringence of ZnIn2S4 layered crystals 
    STAMOV, I. G.; ZALAMAI, V. V.; SYRBU, N. N.; TIRON, A. V. (Elsevier, 2020)
    Interference spectra of layered ZnIn2S4 crystals were investigated for samples of different thicknesses (7.5–900 μm). Spectral dependences of refractive indices (na and nb) for light waves with different polarizations were ...
  • Activitatea antioxidantă a preparatului etanolic în baza biomasei de Porphyridium cruentum 
    SADOVNIC, Daniela; CEPOI, Liliana; RUDI, Ludmila; VALUŢA, Ana; CHIRIAC, Tatiana; CODREANU, Svetlana; MISCU, Vera; COJOCARI, Angela (Moldova State University, 2014)
    There was studied the impact of antioxidant complex from microalga Porphyridium cruentum biomass on the antioxidant activity of vegetable oils and their oxidation process. The antioxidant complex was obtained by extracting ...
  • Noi premixuri furajere în baza biomasei de spirulină cu selen 
    RUDIC, Valeriu; DJUR, Svetlana; CEPOI, Liliana; CHIRIAC, Tatiana; RUDI, Ludmila; CODREANU, Svetlana; GHELBET, Viorica (Moldova State University, 2014)
    There have been proposed the recipes for preparing two feed premixes with organic selenium according to the source of inorganic selenium used: “Spirulina with organic selenium 1 and 2” and “protein feed premix with organic ...
  • Statutul antioxidant în corelare cu componenţa biochimică a biomasei unor microalge în condiţii de tehnologii intensive 
    CEPOI, Liliana (Moldova State University, 2014)
    The coordination compounds of Fe (III) with Schiff bases cause the Porphyridium cruentum biomass reduction and Haematococcus pluvialis biomass increasing in case of application of the mentioned compounds in an amount of ...
  • Antioxidant activity of spirulina biomass at the action of some pegilated nanoparticles 
    RUDI, L.; CEPOI, L.; CHIRIAC, T.; ROTARI, I.; PLÂNGĂU, E.; VALUTA, A.; CARAUȘ, V.; RUDIC, V. (Universitatea de Stat din Moldova, 2019)
    Altering the antioxidant activity of spirulina biomass, in the direction of increase or reduction, is the result of toxic action of xenobiotics on spirulina culture. High concentrations of xenobiotics reduce the antioxidant ...
  • Biochemical and morphological changes in spirulina during selenium nanoparticle biosynthesis 
    CEPOI, Liliana; TAȘCA, Ion (Universitatea de Stat din Moldova, 2019)
    Selenium is a trace element strictly necessary to ensure normal metabolism in the human body. There are currently 25 known selenoproteins, all of which are involved in metabolic processes aimed at preventing and fighting ...
  • Copper compounds as stress factors and regulators in phycobiotechnology 
    CEPOI, Liliana (Universitatea de Stat din Moldova, 2022)
    Microalgae and cyanobacteria, especially freshwater ones, in their natural environment are deficient in essential metals and have effective mechanisms for their capture and active transport into cells. Under technological ...
  • Red microalgae Porphyridium cruentum – marker of nanoparticle toxicity 
    CEPOI, Liliana; RUDI, Ludmila; CHIRIAC, Tatiana; MISCU, Vera; GHELBET, Viorica; GUŢU, Tatiana; SADOVNIC, Daniela; RUDIC, Valeriu (Academy of Sciences of Moldova, Institute of Zoology, 2013)
    Currently several species of microalgae (Chlamydomonas reinhardtii, Euglena gracilis, Chlorella vulgaris, Scenedesmul sp. etc.) are used as models for establishing different types of nanomaterials toxicity. The method of ...
  • Correlation dependencies in carotenoid accumulation troughout life cycle of green alga Haematococcus pluvialis 
    MISCU, V.; RUDI, L.; CEPOI, L.; CODREANU, S. (Academia de Ştiinţe a Republicii Moldova, Institutul de Microbiologie şi Biotehnologie, 2014)
    In this study, there has been determined correlation between ABTS values and content of carotenoids, as major components in the ethanolic extracts from green alga Haematococcus pluvialis biomass collected throughout life cycle.
  • The role of carotenoids in suppression of oxigen reactive species in red alga Porphiridium Cruentum 
    MISCU, V.; RUDI, L.; CEPOI, L.; CODREANU, S.; GHELBET, V.; IAȚCO, Iu.; RUDIC, V. (Academia de Ştiinţe a Republicii Moldova, Institutul de Microbiologie şi Biotehnologie, 2014)
    Reaction of any living organisms, including the unicellular in case of xenobiotic interventions and life conditions modification is expressed in modifying of antioxidant status, which tends to maintain homeostasis and ...
  • Phylogenetical approach for the search of valuable metabolic products in cyanobacteria 
    CEPOI, Liliana; GOLAN, Jacob; GRYGANSKYI, Andrii P. (Academia de Ştiinţe a Republicii Moldova, Institutul de Microbiologie şi Biotehnologie, 2015)
    We propose using a phylogenetic approach to detect strains of potential value for the production of various secondary metabolites. Existing phylogenetic methods lack precision and only make use of rDNA or single gene ...
  • Sulfated polysaccharides as agents for free radicals annihilation in spirulina biomass cultivated under the induced illumination stress conditions 
    RUDIC, V.; RUDI, L.; CHIRIAC, T.; CEPOI, L.; MISCU, V.; CODREANU, S.; DJUR, S.; VALUȚA, A.; SADOVNIC, D.; GHELBET, V.; DUMBRĂVEANU, V.; CHELMENCIUC, V.; DONI, V. (Academia de Ştiinţe a Republicii Moldova, Institutul de Microbiologie şi Biotehnologie, 2016)
    Spirulina platensis is the source of sulfated polysaccharides known as Na (Ca) spirulan with antiviral and anti-inflammatory action. In the cell sulfated polysaccharides as polyanionic complexes located on the external ...
  • β-carotene involving in free radicals annihilation in spirulina biomass cultivated under the oxidative stress conditions 
    RUDIC, V.; RUDI, L.; CHIRIAC, T.; CEPOI, L.; MISCU, V.; CODREANU, S.; DJUR, S.; VALUȚA, A.; IATSCO, Iu.; CHELMENCIUC, V.; DONI, V.; ROTARU, M. (Academia de Ştiinţe a Republicii Moldova, Institutul de Microbiologie şi Biotehnologie, 2016)
    Carotenoids are a group of pigments that play multiple structural and functional roles. They are molecules with conjugated double bonds, allowing them to participate in photosynthetic functions. The most abundant carotenoids ...
  • Technological stress and the quality of spirulina biomass 
    CEPOI, Liliana (Academia de Ştiinţe a Republicii Moldova, Institutul de Microbiologie şi Biotehnologie, 2016)
    Arthrospira platensis is an industrially grown cyanobacterium in several countries, and its production is constantly increasing. Technological factors can be a useful tool for the quality of cyanobacterial biomass, but may ...
  • Antioxidant activity in Arthrospira platensis cells during the vital cycle in standard and strees condition 
    CEPOI, Liliana (Academia de Ştiinţe a Republicii Moldova, Institutul de Microbiologie şi Biotehnologie, 2016)
    The goal of this work was to determine the changes that occurred in the antioxidant status of cyanobacterium Spirulina platensis during its life cycle. For this Arthrospira platensis (A. platensis) CNM-CB-11 strain from ...
  • Productivity and content of biologically active compounds during Spirulina platensis cultivat ion in the presence of gold nanoparticles (AuNPs) 
    CEPOI, Liliana; CHIRIAC, Tatiana; ROTARI, Ion; RUDI, Ludmila; ZINICOVSCAIA, Inga; IUSHIN, Nikita; VALUȚA, Ana; MISCU, Vera; CODREANU, Svetlana (Academia de Ştiinţe a Moldovei, Institutul de Microbiologie şi Biotehnologie, 2018)
    It was studied biological effect of AuNPs on cyanobacterium Spirulina platensis growth and established the level of biomass accumulation. According to the obtained results, the effect of gold nanoparticles on spirulina ...
  • Induced oxidative stress - a biotechnological tool in phycobiotechnology 
    CEPOI, Liliana (Academia de Ştiinţe a Moldovei, Institutul de Microbiologie şi Biotehnologie, 2018)
    Phycological production is becoming more attractive due to several advantages, one of which is the use of very compact surfaces for the cultivation process. Moreover, phycological biomass is a profitable source of proteins, ...

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