Based on the knowledge of the properties of physics and chemistry of CO2,the important applications and research progresses for CO2 in the field of food technology have been introduced in an allround wayThe four aspects below have been stressed:the applying value、principles and technique requirements of CO2 in the product preservation;the main material position and differently technological applications of CO2 in beverage industry;the unique advantage of liquid CO2 in quickfrozen food process;advance...