Dewpoint Moisture Content: A New Method Moisture Content Analysis

Presented by

Brady Carter, Decagon Devices

About this talk

Dewpoint Moisture Content: A New Method for Moisture Content Analysis This seminar will provide information about the Dewpoint Moisture Content method, a new method for moisture content analysis. Moisture content is a quantitative measurement of the amount of water in a product. It is primarily measured using loss on drying techniques where water (and often other volatiles) is driven out of the product by exposure to elevated temperatures inside an oven. Moisture content provides valuable information about yield, product purity, and ingredient concentration. Water activity represents the energy status of the water in the system. It provides valuable information about microbial, chemical, and physical stability. The primary method for measuring water activity is chilled-mirror dewpoint method. Moisture content and water activity are currently measured using separate techniques or instruments. The Dewpoint Moisture Content method makes it possible to measure both analyses in one instrument. To work, the Dewpoint Moisture Content method requires an understanding of the relationship between water activity and moisture content. This seminar will describe this relationship, called a moisture sorption isotherm, and how it can be used to determine moisture content using dewpoint derived water activity values. The accuracy and precision of the Dewpoint Moisture method will be reported and compared to other moisture content methods. 5 Major Learning Objectives: 1) The Dewpoint Moisture Content method will be introduced 2) The relationship between water and moisture content will be described. 3) Development of a calibration model relating moisture content to water activity will be described. 4) Moisture content results for the Dewpoint Moisture Content method will be reported. 5) The Dewpoint Moisture Content method will be compared to other methods.

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