1. School of Agricultural and Natural Sciences University of Mpumalanga Corner R40 and D725 Road Nelspruit 1200 South Africa
2. Agro‐Processing and Postharvest Technologies Division Agricultural Research Council – Tropical and Subtropical Crops Nelspruit 1200 South Africa
3. Department of Biotechnology and Food Technology Tshwane University of Technology Private Bag X680 Pretoria 0083 South Africa
4. Department of Consumer and Food Sciences University of Pretoria Private Bag X20 Hatfield 0028 South Africa