Question

What is the D value for processing canned tomatoes, pH 4.3, is 10 minutes at 100 deg Celcius. What is the processing time at that temperature?

Answer 1

In food processing D-value refers to decimal reduction time (or decimal reduction dose) and is the time (or dose) required at a given condition (e.g. temperature), or set of conditions, to kill 90% (or 1 log) of the exposed microorganismsm.

OR It is the time required at temperature T to reduce a specific microbial population by 90% or by a factor of 10

According to studies the D-value for Bacillus coagulans at pH 4.3 in canned tomatoes is
D_100^oC = 3.85 min

Processing time for crushed tomatoes in pint is 35 min and for quart it is 45 min.
Processing time for whole or halves tomatoes in pint is 85 min and for quart it is also 85 min.