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AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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STUDIA CHEMIA - Ediţia nr.4 Tom II din 2017 | |||||||
Articol: |
PREPARATION AND CHARACTERIZATIONS OF NEW BIOMATERIALS BY ANTHOCYANINS ADSORPTION ON HYDROXYAPATITE-BASED MATERIALS. Autori: RÉKA BARABÁS, NORBERT MUNTEAN, GABRIELLA SZABÓ, KRISZTINA MAURER, LILIANA BIZO. |
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Rezumat:
Anthocyanins (ACNs) are water-soluble plant pigments belonging to the group of flavonoids, with antioxidant, anti-inflammatory and antibacterial activity. The antioxidant activities of extracts from berries and hibiscus were tested with the Briggs–Rauscher method. Adsorption of anthocyanins on biomaterials is a method for their stabilization. Hydroxyapatite (HAP) doped with inorganic silica has an increased specific surface, porosity and chemical reactivity. Anthocyanins from extracts of different berries were adsorbed on hydroxyapatite-based materials. The adsorption and desorption capacity of hydroxyapatite-based materials were measured and the adsorption capacity of different anthocyanin extracts were compared. It was concluded that the highest adsorption capacity and efficiency were obtained in the case of blueberry. Based on the results of the desorption experiments, it has been proven that HAP-Si-blueberry is more adequate to obtain a retard effect, despite the fact that the antioxidant activities of blueberry and blackcurrant are similar.
Keywords: anthocyanin, antioxidant activity, hydroxyapatite-based materials, berries extract, hibiscus extract. |
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