Topics to know well for the Final Examination 2016--physico-chemical parameters

• You should understand the physico-chemical parameters that affect microbial growth and survival. 

• Temperature preferences and effects of different micororganisms.

• The heat treatment in particular is an important way of food safety assurance and need to know all aspects on D value, Z value, and F value. You need to know how they are calculated and used in heat treatment scenarios.

• Moisture contents vs water activities. 

• Strong acids and weak acids effects on growth and survival of different kinds of microorganisms. 

• Aerobic vs anaerobic respiration vs fermentation

• Redox potential as a predictor of kinds of microorganism that grow on the food

• How the phsico-chemical parameters are manipulated for prevention of foodborne diseases and food safety