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dc.contributor.authorDonhowe, Erik Glenn
dc.date.accessioned2014-03-04T21:05:48Z
dc.date.available2014-03-04T21:05:48Z
dc.date.issued2013-08
dc.identifier.otherdonhowe_erik_g_201308_ms
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/donhowe_erik_g_201308_ms
dc.identifier.urihttp://hdl.handle.net/10724/29022
dc.description.abstractBeta-carotene is the main dietary source of Vitamin A, an essential micronutrient required to maintain proper health. The in vivo bioavailability and absorption of beta-carotene, however, is limited due to the inhibition by the natural plant matrices in which it is found. This study focused on microencapsulation methods to improve release and bioavailability in vitro. Alginate and chitosan formulations were evaluated for encapsulation efficiency and particle size, and the effect of viscosity on release in vitro were determined. Increased viscosity decreased release due to inhibition of diffusion from the microcapsules. Additional research compared the in vitro bioavailabilities and physical properties of three types of microencapsulated beta-carotene (spray-dried with maltodextrin, commercial water-dispersible, and chitosan-alginate microcapsules) in terms of morphology, water activity, moisture content, particle size, surface beta-carotene, and encapsulation efficiency. The bioavailability of the commercial water-dispersible beta-carotene was consistently highest, even in the presence of food matrices (yogurt, pudding).
dc.languageeng
dc.publisheruga
dc.rightspublic
dc.subjectBeta-carotene
dc.subjectmicroencapsulation
dc.subjectin vitro digestion
dc.subjectbioavailability
dc.titleMicroencapsulation of beta-carotene
dc.title.alternativecharacterization, in vitro release, and bioavailability
dc.typeThesis
dc.description.degreeMS
dc.description.departmentFood Science and Technology
dc.description.majorFood Science
dc.description.advisorFanbin Kong
dc.description.committeeFanbin Kong
dc.description.committeeLouise Wicker
dc.description.committeeWilliam L. Kerr


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