NDLI: Calcium-Alginate-Inulin Microbeads as Carriers for Aqueous Carqueja Extract.

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Calcium-Alginate-Inulin Microbeads as Carriers for Aqueous Carqueja Extract.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Balanc, Bojana Kalusevic, Ana Drvenica, Ivana Coelho, Maria Teresa Djordjevic, Verica Alves, Vitor D. Sousa, Isabel Moldão-Martins, Margarida Rakic, Vesna Nedovic, Viktor Bugarski, Branko
Description	Author Affiliation: Balanc B ( Faculty of Technology and Metallurgy, Univ. of Belgrade, Karnegijeva 4, 11000, Belgarde, Serbia.); Kalusevic A ( Faculty of Agriculture, Univ. of Belgrade, Nemanjina 6, 11080, Belgrade, Serbia.); Drvenica I ( Faculty of Technology and Metallurgy, Univ. of Belgrade, Karnegijeva 4, 11000, Belgarde, Serbia.); Coelho MT ( LEAF-Linking Agriculture, Environment, Agriculture and Food, Inst. Superior de Agronomia, Univ. de Lisboa, Tapada da Ajuda, 1349-017, Lisboa, Portugal.); Djordjevic V ( Inst. Politécnico de Castelo Branco, Escola Superior Agrária, Castelo Branco, Quinta da Senhora de Mércules, Apartado 119, 6001-909, Castelo Branco, Portugal.); Alves VD ( CERNAS-Centre of Natural Resources, Environment and Society, Bencanta, 3045-601, Coimbra, Portugal.); Sousa I ( Faculty of Technology and Metallurgy, Univ. of Belgrade, Karnegijeva 4, 11000, Belgarde, Serbia.); Moldão-Martins M ( LEAF-Linking Agriculture, Environment, Agriculture and Food, Inst. Superior de Agronomia, Univ. de Lisboa, Tapada da Ajuda, 1349-017, Lisboa, Portugal.); Rakic V ( LEAF-Linking Agriculture, Environment, Agriculture and Food, Inst. Superior de Agronomia, Univ. de Lisboa, Tapada da Ajuda, 1349-017, Lisboa, Portugal.); Nedovic V ( LEAF-Linking Agriculture, Environment, Agriculture and Food, Inst. Superior de Agronomia, Univ. de Lisboa, Tapada da Ajuda, 1349-017, Lisboa, Portugal.); Bugarski B ( Faculty of Agriculture, Univ. of Belgrade, Nemanjina 6, 11080, Belgrade, Serbia.)
Abstract	Carqueja (Pterospartum tridentatum) is an endemic species and various bioactive compounds have been identified in its aqueous extract. The aim of this study was to protect the natural antioxidants from the aqueous extract of carqueja by encapsulation in Ca-alginate microbeads and Ca-alginate microbeads containing 10% and 20% (w/v) of inulin. The microbeads produced by electrostatic extrusion technique had an average diameter from 625 µm to 830 µm depending on the portion of inulin. The sphericity factor of the hydrogel microbeads had values between 0.014 and 0.026, while freeze dried microbeads had irregular shape, especially those with no excipient. The reduction in microbeads size after freeze drying process (expressed as shrinkage factor) ranged from 0.338 (alginate microbeads with 20% (w/v) of inulin) to 0.523 (plain alginate microbeads). The expressed radical scavenging activity against ABTS and DPPH radicals was found to be between 30% and 40% for encapsulated extract, while the fresh extract showed around 47% and 57% of radical scavenging activity for ABTS and DPPH radicals, respectively. The correlation between antioxidant activity and the total phenolic content were found to be positive (in both assay methods, DPPH and ABTS), which indicate that the addition of inulin didn't have influence on antioxidant activity. The presence of inulin reduced stiffness of the hydrogel, and protected bead structure from collapse upon freeze-drying. Alginate-inulin beads are envisaged to be used for delivery of aqueous P. tridentatum extract in functional food products.
File Format	HTM / HTML
ISSN	00221147
Issue Number	1
Volume Number	81
e-ISSN	17503841
Journal	Journal of Food Science
Language	English
Publisher	Wiley (on behalf ofInstitute of Food Technologists)
Publisher Date	2016-01-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Food science Alginates Antioxidants Administration & Dosage Calcium Drug Carriers Fabaceae Chemistry Inulin Plant Extracts Analysis Pharmacology Benzothiazoles Metabolism Biphenyl Compounds Capsules Freeze Drying Functional Food Glucuronic Acid Hexuronic Acids Hydrogel Microspheres Oxidation-reduction Phenols Picrates Sulfonic Acids Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Food Science

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