In higher plants, there are three carotenoid pigments which might be energetic within the xanthophyll cycle: violaxanthin, antheraxanthin, and zeaxanthin. During mild stress, violaxanthin is converted, i.e. reduced, to zeaxanthin via the intermediate antheraxanthin, which performs a direct photoprotective role appearing as a lipid-protective anti-oxidant and...
Naidoo, Prakash (7 July 2006). "Zanele Mbeki: Redefining the role of First Lady". South African History On-line. McGrenery, Tom (2004). "President Thabo Mbeki receives Honorary Stellenbosch Degree" (PDF). Department of Foreign Affairs. Department of Foreign Affairs. Workplace of the Government Deputy President Mbeki. South African Press Company. Department o...