Moisture sorption hysteresis in potato starch extrudates
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Department of Biological Elements of Food Technology and Feed, University of Agriculture, Doświadczalna 48, 20-236 Lublin, Poland
Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin 27, Poland
Acceptance date: 1999-04-17
Int. Agrophys. 1999, 13(4): 451-455
Moisture sorption hysteresis loops of potato starch as native material and their extrudates were investigated to help understand the nature of the sorption process. The hysteresis loop for potato starch extrudate was greater than that for native potato starch. This was explained as a difference in internal porosity volume and changes in the structure of the absorbent. Some qualitative relationship between cumulative volume and the sorption dates calcu- lated on the basis BET parameters were observed.
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