SOME ASPECTS OF THE DRYING OF PROTEIN PRODUCTS

A review of methods for evaluation of the quality of protein-containin g products is presented. Selected methods of drying which allow high p roduct quality to be preserved are discussed. The degradation kinetics of labile materials were approximated by a first-order differential e quation and determined experimentally for a number of products. The pa per also analyses the drying of labile products at reduced inlet humid ity of drying agent. The results are sufficiently encouraging for furt her development of this drying technique. The paper presents an applic ation of a method developed earlier for calculation of water sorption isotherms for a multicomponent mixture. This approach was directly app lied in a mathematical model of fluidized bed drying of biosynthesis p roducts to determine their degradation kinetics. A comparison between experimental and predicted values is presented.