Pregled bibliografske jedinice broj: 521006
Encapsulation of thyme (Thymus serpyllum L.) aqueous extract in Ca-alginate microbeads
Encapsulation of thyme (Thymus serpyllum L.) aqueous extract in Ca-alginate microbeads // Proceedings of the XVIII International Conference on Bioencapsulation / Sarmento, Bruno ; Fonseca, Luis (ur.).
Porto: Bioencapsulation Research Group, 2010. (poster, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
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Naslov
Encapsulation of thyme (Thymus serpyllum L.) aqueous extract in Ca-alginate microbeads
Autori
Manojlovic, Verica ; Stojanovic, Radoslava ; Belscak-Cvitanovic, Ana ; Komes, Drazenka ; Nedovic, Viktor ; Bugarski, Branko
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Proceedings of the XVIII International Conference on Bioencapsulation
/ Sarmento, Bruno ; Fonseca, Luis - Porto : Bioencapsulation Research Group, 2010
Skup
XVIII International Conference on Bioencapsulation
Mjesto i datum
Porto, Portugal, 01.10.2010. - 02.10.2010
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Alginate; Electrostatic extrusion; Polyphenols; Thyme
Sažetak
Microencapsulation of thyme aqueous extract within Ca-alginate hydrogel matrix by electrostatic extrusion has been assessed. A part of microbeads was dried in a drying-oven at 50 °C for 24h, while the other part was freeze dried. Also, inulin was investigated as a filler to improve final properties of alginate microbeads. The most of polyphenolic compounds was released relatively rapidly from native hydrogel beads and reaches a plateau after about 10 min. In case of microbeads containing inulin as a filler, the release was extended to 15 min. Simultaneously with the increase in TPC of the surrounding medium, the antioxidant capacity continuously increases, which confirms that polyphenolic compounds are responsible for the antioxidant effect of obtained microbeads. Freeze-dried microbeads appeared to be suitable dosage forms since they exhibit significantly higher antioxidant capacity compared to hydrogel or heat-dried forms. The release of polyphenols from the hydrogel microbeads is consistent with difussion controlled release through the alginate gel matrix. The inclusion of a filler substance such as inulin or sugar contributes not only to improved cellular bead structure but also to enhanced biological activity.
Izvorni jezik
Engleski
Znanstvena područja
Prehrambena tehnologija
POVEZANOST RADA
Projekti:
058-0000000-3470 - Stabilnost alkaloida i polifenola u proizvodima biljnog podrijetla (Komes, Draženka, MZOS ) ( CroRIS)
Ustanove:
Prehrambeno-biotehnološki fakultet, Zagreb
