Abstract Desiccant is often used in packaging of foodstuffs and medicaments to prolong the preserving time.Though the traditional desiccants, such as silica gel and chloride calcium,are widely used,they have lots of defects in their capability.To solve the problem,many new desiccants come forth.This paper reviews the advantage,disadvantage and mechanism of two kinds of the new desiccants made from natural inorganic material and natural organic material.
2005, Vol. 22 
