- MC + aw in one
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Water activity is an effective process control and quality assurance tool for maintaining the stability and safety of DDGS and should be included as a recommended analytical method for DDGS. In addition to the reasons outlined above, water activity is a more effective moisture analysis than moisture content because it is more sensitive and accurate. In the intermediate moisture region, which includes DDGS, changes in moisture content that are undetectable due to the limited accuracy of moisture content analyses can result in large changes in water activity and consequently, changes in stability. This can be disconcerting when DDGS is dried to a moisture content specification, and stability changes suddenly occur, even though a moisture content change is not detected. These stability changes can be predicted if a water activity specification is used. Water activity is a fast, inexpensive, and accurate way of assuring the quality and safety of DDGS. It can be easily incorporated by any ethanol plant. Learn more about water activity testing and DDGS by contacting METER support.
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