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KMID : 0380619850170020095
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Korean Journal of Food Science and Technology
1985 Volume.17 No. 2 p.95 ~ p.100
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Effect of Number of Washings with Solvents on Quality of Dried Soymilk Residue
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Abstract
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Effects of number of washings with solvents on drying rates and physicochemical properties of dried soymilk residues(SMR) were investigated. The dried soymilk residue was prepared by washing the residue with acetone or ethanol, followed by drying at 60℃ . Increase of number of washings with a residue/solvent ratio of 1/1.5 resulted in an increase in drying rate and in protein content of the residue while the lipid content decreased. The brightness of the dried residue and the properties of water and oil absorption were also improved by washing with acetone which was advantageous to ethanol for all of the properties measured. Washings more than 3 times with acetone or 2 times with ethanol were found to be less effective in terms of quality improvement. The more addition of dried residue into the mixture of SMR-wheat flour resulted in a linear increase of water and oil absorption characteristics.
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