Maria Theron is a full-time researcher in the Unit for Applied Food Science and Biotechnology (UAFSB) at the Central University of Technology (CUT), Free State in Bloemfontein, South Africa. She holds a Ph.D in Medical Microbiology from the University of the Free State (UFS). She is currently steering a project on "Organic Acids as Antimicrobials in Food Preservation" within the research niche area of the UAFSB.
Ryk Lues is currently full professor and head of the Programme Environmental Health at the Central University of Technology (CUT), Free State, South Africa. He also heads the Unit for Applied Food Safety and Biotechnology at the CUT. Lues holds an MSc (Microbiology) and a Ph.D (Food Science) from the University of the Free State and his field of specialization comprises organic acid biotechnology and social-behavioral aspects affecting food microbiology and hygiene.