Study on moisture absorption characteristics of honeysuckle spray powder by dynamic vapour sorption method / 中草药

ABSTRACT

To study the kinetic characteristics of moisture adsorption-desorption characteristics of honeysuckle spray powder by dynamic vapour sorption method. Methods: The moisture adsorption and desorption data of honeysuckle spray powder were determined by dynamic vapour sorption instrument under the conditions of temperature of 20, 30, and 40 ℃ and relative humidity of 0-85%. Based on the six kinds of moisture absorption models commonly used, the experimental data were fitted and evaluated. Results: The higher the temperature, the shorter the time required to reach the moisture balance. When the relative humidity was 65%-85%, the quality of honeysuckle powder was obviously changed. The greater the relative humidity, the greater the quality change when the equilibrium was reached. Peleg model was the best mathematical model to describe the moisture adsorption-desorption characteristics of honeysuckle spray powder. Conclusion: The dynamic vapour sorption method can shorten the test time and reduce the human error. It is suitable for the study of moisture absorption characteristics of honeysuckle spray powder.