Browsing Faculty of Natural Sciences by Author "Groenewald, W.H."
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Seasonal variation of citrinin in traditionally brewed African beer
Ikalafeng, B.K.; Pool, Edmund John; Lues, R.; Groenewald, W.H. (Academic Journals, 2013)A seasonal study on citrinin concentrations in traditional beer was conducted using a standardised enzyme-linked immunosorbent assay. Representative samples of indigenous South African beer were collected during the hot, ... -
The use of ultraviolet radiation as a non-thermal treatment for the inactivation of alicyclobacillus acidoterrestris spores in water, wash water from a fruit processing plant and grape juice concentrate
Gouws, Pieter A.; Cilliers, F P.; Witthuhn, R C.; Groenewald, W.H. (CUT Free State, 2013)Alicyclobacillus acidoterrestris is a non-pathogenic, spore-forming bacterium that can survive the commercial pasteurisation processes commonly used during fruit juice production. Surviving bacterial endospores germinate, ...