PIROT SCALE PREPARATION OF PROTEIN CONCENTRATES FROM WHEAT MILLRUN AND WHEAT SHORTS USING A WET ALKALINE PROCESS

Abstract

ABSTRACTA pilot‐scale process for preparing high‐protein, low fiber (<l%) products from 150‐lb batches of wheat millrun and shorts using a wet alkaline method is described. The protein concentrates contained 60–70% protein when starch was removed prior to protein precipitation and 25–26% protein with the starch present. Yields of the protein concentrates ranged from 4.1 to 33.6% of the raw material starting weight (dry basis), depending on the processing conditions employed. Yield could be increased by re‐extracting the pressed residue. Water requirements for extraction were lowered from 750 to 263 lb by extracting the raw material with the deproteinized mother liquor from the previous lot.