Characterization of starch and gum arabic-maltodextrin microparticles encapsulating acacia tannin extract and evaluation of their potential use in ruminant nutrition

dc.contributor.authorAdejoro, Festus Adeyemi
dc.contributor.authorHassen, Abubeker
dc.contributor.authorThantsha, Mapitsi Silvester
dc.contributor.emailabubeker.hassen@up.ac.zaen_ZA
dc.date.accessioned2020-07-10T13:36:25Z
dc.date.available2020-07-10T13:36:25Z
dc.date.issued2019
dc.description.abstractOBJECTIVE : The use of tannin extract and other phytochemicals as dietary additives in ruminants is becoming more popular due to their wide biological actions such as in methane mitigation, bypass of dietary protein, intestinal nematode control, among other uses. Unfortunately, some have strong astringency, low stability and bioavailability, and negatively affecting dry matter intake and digestibility. To circumvent these drawbacks, an effective delivery system may offer a promising approach to administer these extracts to the site where they are required. The objectives of this study were to encapsulate acacia tannin extract (ATE) with native starch and maltodextrin-gum arabic and to test the effect of encapsulation parameters on encapsulation efficiency, yield and morphology of the microparticles obtained as well as the effect on rumen in vitro gas production. METHODS : The ATE was encapsulated with the wall materials, and the morphological features of freeze-dried microparticles were evaluated by scanning electron microscopy. The in vitro release pattern of microparticles in acetate buffer, simulating the rumen, and its effect on in vitro gas production was evaluated. RESULTS : The morphological features revealed that maltodextrin/gum-arabic microparticles were irregular shaped, glossy and smaller, compared with those encapsulated with native starch, which were bigger, and more homogenous. Maltodextrin-gum arabic could be used up to 30% loading concentration compared with starch, which could not hold the core material beyond 15% loading capacity. Encapsulation efficiency ranged from 27.7%±6.4% to 48.8%±5.5% in starch and 56.1%±4.9% to 64.8%±2.8% in maltodextrin-gum arabic microparticles. Only a slight reduction in methane emission was recorded in encapsulated microparticles when compared with the samples containing only wall materials. CONCLUSION : Both encapsulated products exhibited the burst release pattern under the pH conditions and methane reduction associated with tannin was marginal. This is attributable to small loading percentages and therefore, other wall materials or encapsulation methods should be investigated.en_ZA
dc.description.departmentAnimal and Wildlife Sciencesen_ZA
dc.description.departmentBiochemistryen_ZA
dc.description.departmentGeneticsen_ZA
dc.description.departmentMicrobiology and Plant Pathologyen_ZA
dc.description.librarianam2020en_ZA
dc.description.sponsorshipThe Department of Science and Technology (DS&T), the National Research Foundation (NRF), of South Africa and the University of Pretoria.en_ZA
dc.description.urihttp://www.ajas.infoen_ZA
dc.identifier.citationAdejoro, F.A., Hassen, A. & Thantsha, M.S. 2019, 'Characterization of starch and gum arabic-maltodextrin microparticles encapsulating acacia tannin extract and evaluation of their potential use in ruminant nutrition', Asian-Australasian Journal of Animal Sciences, vol. 32, no. 7, pp. 977-987.en_ZA
dc.identifier.issn1011-2367 (print)
dc.identifier.issn1976-5517 (online)
dc.identifier.other10.5713/ajas.18.0632
dc.identifier.urihttp://hdl.handle.net/2263/75131
dc.language.isoenen_ZA
dc.publisherAsian-Australasian Association of Animal Production Societiesen_ZA
dc.rights© 2019 by Asian-Australasian Journal of Animal Sciences. This is an open-access article distributed under terms of the Creative Commons Attribution Non-Commercial License.en_ZA
dc.subjectEncapsulationen_ZA
dc.subjectStarchen_ZA
dc.subjectRumen fermentationen_ZA
dc.subjectTannin extracten_ZA
dc.subjectAcacia tannin extract (ATE)en_ZA
dc.subjectMaltodextrin-gum arabicen_ZA
dc.titleCharacterization of starch and gum arabic-maltodextrin microparticles encapsulating acacia tannin extract and evaluation of their potential use in ruminant nutritionen_ZA
dc.typeArticleen_ZA

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