Lebensmitteltechnologe BP Practice Questions - Lebensmitteltechnologe Lebensmitteltechnologin Mit Eidgenössischem Fachausweis Exam

In thermal food preservation kinetics, what does the decimal reduction time (D-value) specifically represent?

The time in minutes required at a given constant temperature to reduce the surviving microbial population by 90% (one logarithmic cycle) The temperature increase required to reduce the thermal death time by a factor of 10 The total time needed to achieve commercial sterility in a low-acid canned food at 121.1°C The duration of the holding phase required to completely inactivate all bacterial endospores and thermophilic enzymes

Correct Answer:

The time in minutes required at a given constant temperature to reduce the surviving microbial population by 90% (one logarithmic cycle)

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