Z-value of an organism:: (A) The time required to kill 90% of cells at a particular temperature, (B) The time required to kill all cells at a particular temperature, (C) Is the temperature change required for the D-value to change by a factor of ten, (D) Is the temperature change required for the D-value to change by a factor of five
Answer is C. Ans. C. Is the temperature change required for the D-value to change by a factor of tena. D value of an organism is the time needed at a certain temperature to kill 90% of the organisms in the medium,b. Z-value of an organism is the temperature change required for the D-value to change by a factor of ten