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Scientific Papers, USAMV Bucharest, Series A, Vol. LII, 2009, ISSN 1222-5339COMPARATIVE ANATOMY OF THE VEGETATIVE ORGANS OF THEHEDERA HELIX L. (ARALIACEAE)ELENA SĂVULESCU, VASILICA LUCHIANUniversity of Agronomic Sciences and Veterinary Medicine of BucharestKeywords: epidermis, suber, mesophyll, secretive ductAbstractThe research made on the anatomy of the Hedera helix vegetative organs have highlightedsome features characteristic of the epidermis, collenchymas and assimilator tissue of theleaves and fertile and sterile stems.A thick cuticle covers the epidermis. Following the felogen activity, the epidermis is brokenat the sterile stems comparative with the fertile stems. Tectorial multi-cell hairs are in theepidermis of both stem types.The cortex is multi-layered and it can be differentiated in two zones: external and internalcortex. The external cortex has done by the 4-5 collenchymatous cell layers with calciumoxalate crystals in numerous cells. The internal cortex has done by 5-7 cell layers with thinwalls and many secretive ducts close to the pericycle.In the central cylinder were found 20-35 vascular bundles from open collateral type, withphloem outside and xylem inside.The medulla made up of isodiametric cells with thin walls.The leaves are hypostomatic type with tectorial hairs and the mesophyll is bifacial. Into themesophyll are vascular bundles of collateral type with the xylem outside and phloem inside.In some cells of mesophyll leaves are crystals of calcium oxalate and secretive ducts intothe median nervure.487
Scientific Papers, USAMV Bucharest, Series A, vol.LII, 2009, ISSN 1222-5339INFLUENCE THE DIFFERENT SUBMERGED MEDIA BY THEPRODUCTION OF YELLOW AND RED MONSACUS SP. PIGMENTNICOLETA RADU*, MARIANA FERDES**, OANA COMAN***, ISABEL GHITACRISTESCU***, ALINA MIHALCEA**, CAMELIA UNGUREANU**Keywords: Monascus sp., pigmentsAbstract*I.N.C.D.C.P ICECHIM of Bucharest**Politehnica University of Bucharest***University of Medicine and Pharmacy Carol Davila of BucharestThe production of red and yellow pigments by Monascus sp. is influenced by thecomposition of culture media that determine the quantity and the quality of the colorant.The Monascus sp. strain was cultivated in submerged, shaken culture, using mediacontaining different carbon and nitrogen sources. The optimal cultivation conditions forthis strain require glucose and NaNO 3 to produce the highest quantity of red pigment.491
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SCIENTIFIC PAPERS

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