Abstract
Potassium diformate, a novel dietary additive, has been firstly authorized by the European Union as an alternative to antibiotic growth promoters. The moisture sorption characteristics of potassium diformate were measured by the means of the static gravimetric method. The results indicated that the moisture sorption velocity of potassium diformate is linearly dependent on the relative humidity at 30 °C during the first 12 h. Moreover, the equilibrium moisture content was significantly influenced by relative humidity. The critical relative humidity of potassium diformate is 46.2%. Study on moisture sorption characteristics of potassium diformate will provide the reference to choose operating conditions of preparation and post-processing.
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