Facultatea de Biologie și Geoştiinţe / Faculty of Biology and Geosciences
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Item UTILIZAREA ALGEI CYLINDROSPERMUM LICHENIFORME ÎN PROCESUL DE EPURARE A APELOR REZIDUALE ORĂŞENEŞTI(CEP USM, 2014) Popescu, Tudor; Şalaru, Vasile; Şalaru, Victor; Dobrojan, Sergiu; Ouddane, Boghdad; Nelea, Andruh; Rabodonorina, SuzanahLes eaux de sortie des stations de traitement des eaux (eaux de STEP) peuvent être utilisées pour cultiver l’algue Cylindrospermum licheniforme. On obtient une biomasse algale moins chère et on réduit considérablement le flux de matière inorganique dans l’eau. On peut obtenir plus de quantité de biomasse en cultivant l’algue Cylindrospermum licheniforme dans un milieu fait avec 100% d’eau de STEP (680,96104 mg/l) et la quantité de biomasse obtenue diminue en milieu constitué avec 50% d’eau de STEP (538,3942mg/l).Item SELECTAREA MEDIULUI OPTIMAL PENTRU CULTIVAREA SPECIEI NOSTOC GELATINOSUM (SCHOUSB.) ELENK.(CEP USM, 2014) Donţu, Natalia; Şalaru, Vasile; Şalaru, Victor; Stratulat, Irina; Trofim, Alina; Dobrojan, SergiuThe choice of culture medium for algae growing is an important milestone because it can affect the economic aspects of the production process. For cultivation of Nostoc gelatinosum algae the most optimal medium are Drew and Z8. The highest values of algal productivity may be obtained according the semicontinuous method. With the increase of algal productivity pH values change to basic direction.Item THE INFLUENCE OF LIGHT ON MORPHOLOGICAL CHANGES OF BLUE-GREEN ALGAE NOSTOC GELATINOSUM (SCHOUSB) ELENKAND CYLINDROSPERMUM LICHENIFORME (BORY) KÜTZ. (CYANOPHYTA)(CEP USM, 2014) Dobrojan, Sergiu; Stratulat, Irina; Şalaru, Vasile; Trofim, Alina; Dobrojan, GalinaThe light influences the morphological aspects of algae Nostoc gelatinosum (Schousb) Elenk. and Cylindrospermum licheniforme (Bory) Kutz.. The dark regime generates the dimensional reducing of vegetative cells and heterocysts leading to the alteration of biomass, but spores do not suffer significant changes. Cultivating these algae to favorable conditions of natural and artificial light (continuous), results with launching the process of self-regulating dimensional of cells. The most beneficial sources of ilumination are natural and artificial light.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 tech- nological process has been developed and a sorbent for the separation of microcystins and phycobiliproteins have been proposed.Item UNELE CERCETĂRI REFERITOR LA SPECIA ANABAENA PROPINQUA SETCHELL. ET GARDN.(CEP USM, 2010) Melniciuc, Cristina; Şalaru, VasileThis study reflects morphological and biochemical aspects of the algae Anabaena propinqua Setchel. et Gardn to thepossibility of using it in various fields.This is subject to cultivation in the laboratory. The algae grows best in nutritional environment Fogg and optimal temperature 25-28°C. The algae can be proposed for obtaining biomass – biotechnology object which containing valuable chemical. Biomass obtained contains 15.51% – protein, 11.93% – fat and 21.98% –carbohydrates and other biologically active substances (Phycocyanin – 0.35% and aloficocianina – 1.04%).Item STRUCTURA ALGOFLOREI BAZINELOR BIOLOGICE ALE STAŢIEI DE EPURARE DIN mun. CHIŞINĂU ÎN FEBRUARIE–APRILIE 2009(CEP USM, 2010) Donțu, Natalia; Şalaru, VasileThis article includes the research results on diversity of the algal flora in the aquatic pools of the urban’s wastewaterpurification plant. Samples were collected during in the period February - April months, 2009 year.Item EFECTUL PĂSTRĂRII ÎNDELUNGATE A RELEVEELOR DE SOL ÎN CONDIŢII DE LABORATOR ASUPRA COMPONENŢEI ALGOFLOREI EDAFICE DIN PĂDURILE DE FAG(CEP USM, 2009) Şalaru, Victor; Şalaru, Vasile; Melnic, VictorThe analysis of brown soil on which has been kept in the laboratory conditions for 15-18 years and helped us to distinguish 22 species of algae in comparison with these 48, which was established in the first period of investigation (1984-1987 years). The algae community which was established in the years 2000-2002, are characterized by the predominance of representatives green algae fillum. A long preservation of soil samples in the laboratory for 15-18 years, is contributing to the disapperence of algae from Bacillariophyta fi llum, decreasing green and from Xanthophyta fillum algae diversity, which decreases the number more than twice with a lesser extent it influences on the Cyanophyta fillum. The most resistant were found to be Cyanophyta fillum fi laments form, which are characterized by the presence of a mucilaginous sheath which is well pronounced.Item UTILIZAREA APELOR REZIDUALE DE LA COMPLEXELE ZOOTEHNICE LA CULTIVAREA INDUSTRIALĂ A ALGEI Spirulina platensis (NORDST.) GEITL.(CEP USM, 2009) Dobrojan, Sergiu; Şalaru, Victor; Şalaru, VasileThe results of effectuated experiments are demonstrating that the residual waters of animals growing farms can be used in the quality of nutritive medium in the aim of algae biomass obtaining with reduced prime cost in comparison with biomass grow on mineral mediums. From two types of residual waters used in the quality of nutritive medium for Spirulina cultivation the most favorable are that of cows farms in concentration up to 10% when alga’s biomass increases its value from the mineral medium.Item GRUPELE ECOLOGICE DE ALGE EDAFICE DIN SOLURILE UNOR TIPURI DE AGROFITOCENOZE(CEP USM, 2008) Şalaru, Victor; Şalaru, Vasile; Chicu, NeliDans le présent article on analyse les résultats des recherches consacrées à l’évidence des groupes écologiquesdes algues édaphiques les plus fréquentes chez les cultures agricoles par rapport aux écobiomorphes algales descommunités d’algues édaphiques des sols plantés de différentes cultures agricoles. On a constaté que des écobiomorphes comme les formes algales du type: X, Ch, C, CF, P, H et B étaient communes pour les types d’agrophitocénoses étudiés;à la fois pour chacune d’entre elles des traits spécifiques ont été dépistés.Item UTILIZAREA APELOR REZIDUALE DE LA COMPLEXELE ZOOTEHNICE ÎN SCOPUL OBŢINERII BIOMASEI FURAJERE(CEP USM, 2008) Şalaru, Vasile; Şalaru, VictorDans cet article on présente les résultats de la culture d’une des espèces des plantes aquatiques (Lemna trisulca, L. minor et Myriophyllum spicatum) dans le milieu nutritif, enrichi avec des résidus des complexes d’élevage des poules. On constate que ces 3 espèces des plantes aquatiques supérieures élevées dans un milieu avec la concentration de jusqu’à 20-25%, ont une biomasse maximale dans les limites de 5-10%. Le dépassement de ces concentrations ne provoque pas le trépas des plantes mais retiens leur développement. Les expériences effectuées en condition de laboratoire et en bassins expérimentaux démontrent que toutes les plantes produisent une biomasse valeureuse qui est plus grande qu’en réservoirs naturels. La biomasse obtenue peut être utilisée en qualité de supplément nutritif pour les poules et d’engrais organiques pour faire augmenter la fertilité du sol; elle peut aussi être convertie en énergie thermique ou électrique.