Chapter 7 The Control of Microbial Growth
Chapter 7 The Control of Microbial Growth
Chapter 7 The Control of Microbial Growth
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Pasteurization<br />
• Significant number reduction (esp. spoilage and<br />
pathogenic organisms) does not sterilize!<br />
• Historical goal: destruction <strong>of</strong> M. tuberculosis<br />
• Classic holding method: 63C for 30 min<br />
• Flash pasteurization (HTST): 72C for 15 sec.<br />
Most common in US.<br />
<strong>The</strong>rmoduric organisms survive<br />
• Ultra High Temperature (UHT):<br />
140C for < 1 sec.<br />
Technically not pasteurization because it<br />
sterilizes.<br />
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