Effect of Solvents Washing on Chemical and Physical Properties of Dried Soymilk Residue

TLDR: In this paper, the drying rate, color and chemical and functional properties of soymilk residue were evaluated for drying rate and drying color, and the results showed that washing with acetone resulted in the shortest drying time (1hr) and the highest protein content (48.8%) and in Hunter 'L' value.

Abstract: Soymilk residue was washed separately with acetone, ethanol, isopropyl alcohol and n-hexane, and then dried at . The dried residues were evaluated for drying rate, color and chemical and functional properties. Washing with acetone resulted in the shortest drying time (1hr) and the highest in protein content (48.8%) and in Hunter 'L' value. The dried residues after treatment with acetone and alcohols showed relatively high values of 4.3-4.7g/g and 8.5-8.7g/g in oil and water absorption, respectively. Addition of the acetone treated residue to wheat flour at a level of 10% affected little in Amylograph viscosity while those treated with other solvents caused a significant decrease in the viscosity.