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(11)

EP 2 268 158 A1

(12)

(43) Date of publication: 05.01.2011 Bulletin 2011/01 (21) Application number: 09726745.4 (22) Date of filing: 01.04.2009

(51) International Patent Classification (IPC):  A23K 1/00(2006.01) C12N 1/14(2006.01) A23K 1/165(2006.01) (86) International application number: PCT/IB2009/051366 (87) International publication number: WO 2009/122362 (08.10.2009 Gazette 2009/41)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA RS (30) Priority: 01.04.2008 ZA 200802853 (71) Applicant: University of Stellenbosch Stellenbosch 7600 (ZA)	(72) Inventors: BOTHA, Alfred 7600 Stellenbosch (ZA) PRIOR, Bernard Alexander 7600 Stellenbosch (ZA) CRUYWAGEN, Christiaan Wilhelm 7600 Stellenbosch (ZA) VAN ZYL, Willem Heber 7600 Stellenbosch (ZA) (74) Representative: Ward, David Ian  Marks & Clerk LLP Alpha Tower Suffolk Street Queensway Birmingham B1 1TT Queensway Birmingham B1 1TT (GB)