Kafirin microparticle encapsulation of catechin and sorghum condensed tannins

Taylor, Janet, Taylor, John R. N., Belton, Peter S. and Minnaar, Amanda (2009) Kafirin microparticle encapsulation of catechin and sorghum condensed tannins. Journal of Agricultural and Food Chemistry, 57 (16). pp. 7523-7528. ISSN 1520-5118

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Abstract

To exploit the porous nature of previously developed kafirin microparticles, encapsulation of the bioactive polyphenols, catechin and sorghum condensed tannins, was investigated. The antioxidant release profiles of the encapsulated substances were studied under simulated gastric conditions. Kafirin microparticles encapsulating catechin or sorghum condensed tannins were similar in size to control kafirin microparticles (5-6 µm). TEM showed that kafirin microparticles encapsulating catechin had a rough porous surface. Microparticles encapsulating sorghum condensed tannins were irregular in shape, some apparently joined together, with a mixture of rough and smooth surfaces. Over a period of 4 h, catechin and sorghum condensed tannin encapsulated kafirin microparticles showed virtually no protein digestion but released approximately 70 and 50%, respectively, of total antioxidant activity. Thus, the use of kafirin microparticles to encapsulate catechin and sorghum condensed tannins has potential as an effective method of controlled release of dietary antioxidants.

Item Type:	Article
Faculty \ School:	Faculty of Science > School of Chemistry (former - to 2024)
UEA Research Groups:	Faculty of Science > Research Groups > Biophysical Chemistry (former - to 2017)
Depositing User:	Rachel Smith
Date Deposited:	12 Apr 2011 10:31
Last Modified:	24 Sep 2024 09:18
URI:	https://ueaeprints.uea.ac.uk/id/eprint/28943
DOI:	10.1021/jf901592q

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