[Study on moisture sorption process model and application traditional Chinese medicine extract powder].
OBJECTIVE
Study on the moisture sorption process characteristics of traditional Chinese medicine extract powder, to establish a mathematical model, provide a new method for in-depth study for moisture sorption behavior of traditional Chinese medicine extract powder and a reference for determine the production cycle, and predict product stability.


METHODS
Analyzed moisture absorption process of traditional Chinese medicine extract powder by utilized the law of conservation of mass and Fick's first law to establish the double exponential absorption model, fitted the moisture absorption data and compared with other commonly used five kinds of model to estimate the double-exponential absorption model.


RESULTS
The statistical analysis showed that the coefficient of determination (R2) of double exponential model, Weibull distribution model and first order kinetics model were large, but the residues sum of squares (RSS) and AIC values were small. Synthesized the practical application meaning, we consided that the double exponential model was more suitable for simulating the process of Chinese medicine extract powder moisture absorption.


CONCLUSIONS
The double exponential is suitable for characterization the process of traditional Chinese medicine extract moisture absorption.
Lin
Tingting
T
National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, China.
He
Yan
Y
Xiao
Xiong
X
Yuan
Liang
L
Rao
Xiaoyong
X
Luo
Xiaojian
X
D000042:Absorption; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D007700:Kinetics; D008956:Models, Chemical; D011208:Powders; D014867:Water / Q000737:chemistry
D004365:Drugs, Chinese Herbal; D011208:Powders; D014867:Water