Polytechnic University of Valencia Congress, 21st International Drying Symposium

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Influence of process conditions on quality of spouted bed dried okara
Gabriel Alves de Oliveira Scafi, Renan Alex Lazarin, Louise Emy Kurozawa

Last modified: 26-12-2018


This study aimed to evaluate the spouted bed drying of okara with inert particles of polypropylene. A central composite rotatable design was carried out to verify the effect of drying air temperature and air flow on moisture content, techno-functional properties and trypsin inhibitors activity of dried product. Higher temperatures decreased emulsifying properties and trypsin inhibitor activity, probably due to thermal protein denaturation. In order to obtain a dried okara with maximum techno-functional properties and minimum moisture content and trypsin inhibitor activity, the optimal drying conditions were suggested: air temperature of 60ºC and air flow of 180 m3/h.

Keywords: soy pulp; spouted bed drying; trypsin inhibitor activity; techno-functional properties; optimization




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