Facultatea de Biologie și Geoştiinţe / Faculty of Biology and Geosciences
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Item ELABORAREA SCHEMEI TEHNOLOGICE DE OBTINERE A UNOR PRINCIPII BIOACTIVE DIN BIOMASA DE ALGE CIANOFITE(CEP USM, 2014) Bulimaga, Valentina; Zosim, Liliana; Pisova, Maria; Şalaru, Vasile; Ţurcanu, Olga; Trofim, AlinaThe technological scheme of obtaining of phycoerythrin, phycocyanin, microcystins, endo– and exopolysaccharides from the blue green algae biomass in a single technological process has been developed and a sorbent for the separation of microcystins and phycobiliproteins have been proposed.Item PRODUCTIVITATEA MICROALGEI VERZI DUNALIELLA SALINA LA CULTIVARE ÎN PREZENŢA UNOR COMPUŞI AI Ge(IV(CEP USM, 2013-09-26) Bivol, Cezara; Zosim, Liliana; Elenciuc, Daniela; Djur, Svetlana; Olan, Olga; Batîr, LudmilaItem INFLUENŢA CITRATULUI DE FIER ŞI INTENSITĂŢII LUMINII ASUPRA CONŢINUTULUI DE CAROTENOIZI ŞI FIER ÎN BIOMASA DE SPIRULINĂ(CEP USM, 2013-09-26) Bulimaga, Valentina; Zosim, Liliana; Pisov, MariaItem PROCEDEU DE OBŢINERE A BIOMASEI CIANOBACTERIEI SPIRULINA PLATENSIS CU CONŢINUT SPORIT DE GERMANIU ŞI SELENIU(CEP USM, 2020) Djur (Maxacova), Svetlana; Bulimaga, Valentina; Zosim, Liliana; Tașca, Ion; Dumbrăveanu, VeronicaItem APLICAREA BIOPREPARATELOR CIANOBACTERIENE PENTRU DEZVOLTAREA DURABILĂ A AGRICULTURII(CEP USM, 2020) Trofim, Alina; Bulimaga, Valentina; Zosim, Liliana; Bulimaga, Maria-BiancaItem EFECTUL UNOR COMPUŞI COORDINATIVI AI CU(II) ASUPRA CONŢINUTULUI DE GLICEROL ÎN BIOMASA MICROALGEI VERZI D. SALINA LA VARIEREA UNOR PARAMETRI FIZICI DE CULTIVARE(CEP USM, 2014) Bivol, Cezara; Zosim, Liliana; Elenciuc, Daniela; Batîr, Ludmila; Djur, Svetlana; Olan, OlgaItem PROCEDURES OF OBTANING OF EXOPOLYSACCHARIDES PRODUCED BY CYANOBACTERIA SPIRULINA (ARTHROSPIRA) PLATENSIS AND NOSTOC LINCKIA(Universitatea din Oradea, 2018) Bulimaga, Valentina; Zosim, Liliana; Trofim, Alina; Pisova, MariaThe dynamics of accumulation of total and acidic (sulfated) exopolysaccharides (EPS) produced by cyanobacteria Spirulina platensis and Nostoc linckia under the action of some chemical regulators at the two steps cultivation with the increasing of light at the second step were established. Procedures of EPS isolation from cyanobacteria Spirulina platensis and Nostoc linckia and the scheme of EPS production, obtaining and quantification have been developed. The synthesis of sulfated exopolysaccharides (till 91 mg/l) at the cultivation of spirulina in two stages was positively influenced by the variation of the light regime and the addition of carbon source with or without addition of Na2SeO3. Supplementing of the nutrient medium with sodium selenite (2 mg/l) and varying of light to 2500 lx in the 7th day of cultivation of cyanobacteria Nostoc linckia led to a maximum increasing in the amount of total and acidic exopolysaccharides (477 and 422 mg/g, respectively).Item PROCEDURE FOR OBTAINING CHROMIUM FOOD BIOADDITIVE(Universitatea din Oradea, 2018) Bulimaga, Valentina; Zosim, Liliana; Elenciuc, Daniela; Crivoi, Aurelia; Bacalov, IurieA study of the [Cr(Gly)3]Cl effect on the biochemical composition of the cyanobacterium Spirulina (Arthrospira) platensis has been carried out at cultivation depending on the lighting regime and the timing of addition of this compound. Its positive effect on protein content (including peptides) was established within the concentration limits of up to 30 mg /l. Chromium accumulation was more efficient in light/dark photoperiod (14/10 hours) in case of supplementation on the 1st and 3rd days in the portions. The technological scheme for obtaining chromium bioadditive was proposed. This procedure is based on using a Cr(III) glicinate as source of Cr(III) for obtaining of spirulina biomass enriched with chromium (0,75%) and valuable bioactive substances.Item STUDIUL ACUMULĂRII CUPRULUI LA CULTIVAREA CIANOBACTERIEI SPIRULINA PLATENSIS ÎN PREZENŢA COMPUŞILOR COORDINATIVI AI Cu(II)(CEP USM, 2009) Rudic, Valeriu; Batîr, Ludmila; Bulimaga, Valentina; Zosim, Liliana; Elenciuc, Daniela; Gulea, Aurelian; Ţapcov, VictorThe acumulation of copper in biomass of cyanobacteria Spirulina platensis CNM - CB – 02 at the cultivation in the presence of coordination compounds of Cu (II) has been determined. Bioaccumulation of copper depends on the nature of ligands of the compounds. It was established that compounds [CuL2(Sfz)3H2O] and [Cu(L-2H)] contribute to the increasing of copper content in the biomass of spirulina in 2,94 – 3,42 times compared to the reference sample.Item STUDIUL ACŢIUNII COMPUŞILOR COORDINATIVI NOI AI Fe(III) ŞI AI Cr(III) ASUPRA PROCESULUI DE ACUMULARE A UNOR PRINCIPII BIOACTIVE ÎN BIOMASA DE SPIRULINĂ(CEP USM, 2009) Ciumac, Daniela; Zosim, Liliana; Chiriac, Tatiana; Prodius, Denis; Olan, Olga; Popa, Veaceslav; Sadovnic, Daniela; Iațco, Iulia; Cordeleanu, Cornel; Doni, VeronicaThe study of stimulative effect of some Fe(III) heterotrinuclear clusters and Cr(III) coordinative compouds on peptides and proteins content in Spirulina platensis biomass has been carried out.The protein content decreases with the growth of concentrations in the case of utilization of all coordinative compounds tested. The peptides content increases in the limits of 5,00-50,00 mg/l for Fe(III) coordinative compounds and 10,00-40,00 mg/l for Cr(III) coordinative compounds.