Abstract
Since the effects of temperature and the formation of volatile basic nitrogen (VBN) on the growth of Listeria monocytogenes in skim milk under aerobic and microaerobic conditions are unknown, a series of experiments were designed to investigate these problems with strain VTU 206 goat. At 10, 20 and 30°C, though the population of the organisms reached a magunitude of 107/ml, little change in pH or VBN was observed. The mean generation times at 30°C under aerobic and microaerobic (O: CO2: N =4.9: 9.9: 85.2) conditions were 48 and 54 min, respectively. At 20°C, the mean generation times under aerobic and microaerobic conditions were 108 and 120 min, respectively. At 10°C, the mean generation times under aerobic and microaerobic conditions were 324 and 360 min, respectively.
The Q10 values of the growth of the organisms at 20-30°C and 10-20°C under aerobic and microaerobic conditions were 2.25, 2.22 and 2.96, 3.00, respectively.
