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A Pilot‐Plant Study of Continuous Ultrasonic Extraction of Soybean Protein
Author(s) -
MOULTON K. J.,
WANG L. C.
Publication year - 1982
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1982.tb07632.x
Subject(s) - sonication , extraction (chemistry) , yield (engineering) , chromatography , slurry , solvent , chemistry , aqueous solution , ultrasonic sensor , soy protein , protein purification , pulp and paper industry , materials science , food science , organic chemistry , metallurgy , composite material , physics , acoustics , engineering
Methods were studied to extract soybean proteins from commercial defatted flakes with ultrasonic energy, continuously and efficiently, in a pilot plant. Studies also included batchwise sonication of aqueous soybean slurries in a tank. Parameters investigated included soybean‐to‐solvent ratios of 1:10, 1:20, and 1:30; solvents of tap water and 0.1N NaOH; and extraction with and without sonication. Protein yield and energy requirements for extraction were measured to correlate the operating condition with the extent of protein extraction. For a residence time of 0.7 sec in the continuous sonication process, the extracted protein yield was greatest at 1:30 soy‐to‐alkaline solvent ratio. Energy input to produce protein isolate is the least at 1:10 soy‐to‐alkaline solvent. Although the continuous sonication procedure is workable, the commercial operation remains to be tested.