The appearance and Water-releasing Characteristics were described by BET surface area measurement, the environment scanning electron microscope and fast water equipment.

A method is described for the determination of water content in pectin by the quick moisture apparatus, and the optimum conditions are found as follows: sample mass 1.

The paper introduces a kind of data processing system, with PIC series microcontrollers as the core component, for quick moisture measurement. The system is simple, working, reliable and portable.