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Advances in Aqueous Extraction Processing of Soybeans
Author(s) -
Campbell K. A.,
Glatz C. E.,
Johnson L. A.,
Jung S.,
Moura J. M. N.,
Kapchie V.,
Murphy P.
Publication year - 2011
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-010-1724-5
Subject(s) - extraction (chemistry) , process engineering , hexane , comminution , yield (engineering) , fraction (chemistry) , aqueous solution , biochemical engineering , ionic strength , chromatography , computer science , chemistry , materials science , engineering , organic chemistry , metallurgy
Aqueous extraction processing technologies, having advanced in recent years, may be a viable alternative to hexane extraction to separate oil and protein from soybeans. Different extraction strategies incorporating various modes of comminution, extraction buffers, and enzymes allow production of a range of oil and protein products, but also create different processing challenges. Processes capable of achieving high free oil yields often result in a soluble protein fraction difficult to isolate and dilute oil emulsions difficult to break. Other processes can achieve high yields and purities of native soy protein, but with reduced free oil yield or require a high osmotic and ionic strength extraction buffer. This review article discusses these various advanced processes and their relative advantages and disadvantages. In addition, the current understanding of the underlying fundamental concepts of aqueous extraction is discussed in order to help direct future investigations to improve these technologies.