题目内容

The ______ is the time in minutes at a specified temperature to reduce the number of microorganisms by one log cycle.

查看答案
更多问题

Factors that influence the heat transfer into or out of the product are ( ).

A. heat exchanger desig
B. heat transfer properties of the produc
C. density
D. method of heat transfer

The most heat resistant microbe in canned foods is( ).

A. Salmonella sp.
B. Clostridium perfringen
C. Escherichia coli
D. Staphylococcus aureus

( )is defined as the time required to achieve a stated reduction in the microbial population at a given temperature.

A. Thermal death time
B. D value
C. Z value
D. F value

( ) provide a good alternative, as they can withstand higher temperatures(up to 75℃), operate at a wide pH range (1 to 13), and have reasonable chlorine resistance (up to 50 ppm chlorine).

A. cellulose acetate
B. polymer
C. Polysulfones
D. ceramic

答案查题题库