title: Extended release of vitamins from magnetite loaded polyanionic polymeric beads.
abstract: Here we explore a novel approach of increasing the release duration of folic and ascorbic acid from magnetite entrapped into calcium-alginate beads. Synthesis and characterization of magnetite-vitamins complexes are reported. The magnetite-vitamins complexes were characterized by FT-IR, XRD, SEM, BET and DTA-TG. Also calcium-alginate magnetic beads were prepared by dripping a mixture of sodium alginate with magnetite-vitamins complexes into calcium chloride solution. Extended release profile of the two experimental models was evaluated and quantified by UV-vis.
authors.affiliation: Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania.
authors.forename: Maria
authors.initials: M
authors.lastname: Sonmez
authors.affiliation: Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania.
authors.forename: Cristina
authors.initials: C
authors.lastname: Verisan
authors.affiliation: Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania.
authors.forename: Georgeta
authors.initials: G
authors.lastname: Voicu
authors.affiliation: Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania.
authors.forename: Denisa
authors.initials: D
authors.lastname: Ficai
authors.affiliation: Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania.
authors.forename: Anton
authors.initials: A
authors.lastname: Ficai
authors.affiliation: Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania. Electronic address: elena_oprea_93@yahoo.co.uk.
authors.forename: Alexandra Elena
authors.initials: AE
authors.lastname: Oprea
authors.affiliation: Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania.
authors.forename: Mihaela
authors.initials: M
authors.lastname: Vlad
authors.affiliation: Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania.
authors.forename: Ecaterina
authors.initials: E
authors.lastname: Andronescu
mesh_terms: D000464:Alginates / Q000737:chemistry; D001205:Ascorbic Acid / Q000737:chemistry; D002118:Calcium / Q000737:chemistry; D002122:Calcium Chloride / Q000737:chemistry; D003692:Delayed-Action Preparations / Q000737:chemistry*; D004337:Drug Carriers / Q000737:chemistry; D052203:Ferrosoferric Oxide / Q000737:chemistry*; D005492:Folic Acid / Q000737:chemistry; D020723:Glucuronic Acid / Q000737:chemistry; D006603:Hexuronic Acids / Q000737:chemistry; D000071228:Polyelectrolytes; D011108:Polymers / Q000737:chemistry*; D014815:Vitamins / Q000737:chemistry*
chemical_list: D000464:Alginates; D001205:Ascorbic Acid; D002118:Calcium; D002122:Calcium Chloride; D003692:Delayed-Action Preparations; D004337:Drug Carriers; D052203:Ferrosoferric Oxide; D005492:Folic Acid; D020723:Glucuronic Acid; D006603:Hexuronic Acids; D000071228:Polyelectrolytes; D011108:Polymers; D014815:Vitamins
keywords: Ascorbic acid; Folic acid; Magnetite–vitamins; Polymeric beads