The effect of temperature was particularly evident for HR sausages
where an approximate one log10 extra reduction was obtained at
30 °C compared to 20 °C fermentation temperature. For SR sausages,
only 0.3 log10 extra VTEC reductions were obtained by increasing the
fermentation temperature. In 20 °C fermented sausages, there were
no extra VTEC reductions in HR recipe sausages compared to MR
recipe sausages. The effect on VTEC reduction of added glucose was
higher at 30 °C fermentation which provided lower average pH in the
HR sausages (pH 4.77 at 30 °C versus pH 5.15 at 20 °C) and MR
sausages (pH 4.67 at 30 °C versus pH 4.82 at 20 °C). Only small pH
differences were observed for SR morr and salami (Table 2) fermented
at 20 and 30 °C.