FOOD PROCESSING AND PRESERVATION
FOOD PRESERVATION METHODS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Thermal Death Time
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Thermal Death Point
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Thermal Death Temperature
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Thermal Death Number
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Detailed explanation-1: -Whereas, thermal death point is the temperature necessary to kill given number of organisms in a fixed time, usually 10 min. But it is of less importance.
Detailed explanation-2: -6.3 Thermal Death Time (TDT): Thermal death time is the amount of time that is necessary to kill a specific number of microbes at a specific temperature. This value is obtained by keeping temperature constant and measuring the time necessary to kill the amount of cells specified.
Detailed explanation-3: -One way to do this is to determine the thermal death point (TDP) and the TDT (thermal death time). The TDT is the minimum time it takes to kill a population of microbes at a specific temperature. The TDP is the lowest temperature that is required to kill a population of microbes when applied for a specific time.
Detailed explanation-4: -Thermal death time Many bacterial spores are destroyed at 100 °C in 30min, but some bacterial spores are not destroyed by boiling (100°C) for 24 h. All spores whether bacterial or molds are destroyed at 121°C in 15–20 min by moist heat.