Q. Thank you for creating the awareness about propionates. According to a FSANZ spokesperson, levels depend on climate, meaning that Darwin would have the highest ones in tropical bread products.

A. In theory, it would be logical for Darwin to have to the highest levels in the world of calcium propionate and that is probably why we noticed the effect of this preservative first here. However, in practice, you can get maximum doses anywhere in Australia. According to one southern food analyst who refuses to be named, the sign "preservative 282" on the label can mean the bread contains anywhere from none to over the maximum limit. Three years ago, when the Today Tonight show had Adelaide supermarket breads surveyed for a segment on bread preservative, more than half the breads contained the maximum level of calcium propionates. Yet another example of FSANZ being out of touch with what really happens.