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Production of a high‐protein meal and fermentable sugars from defatted soybean meal, a co‐product of the soybean oil industry
Author(s) -
LujánRhenals Deivis,
Morawicki Ruben O.,
MendezMontealvo Guadalupe,
Wang YaJane
Publication year - 2014
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/ijfs.12384
Subject(s) - soybean meal , sugar , chemistry , food science , meal , yield (engineering) , hydrolysis , soybean oil , carbohydrate , biochemistry , organic chemistry , raw material , materials science , metallurgy
Summary The goal of this research was to produce a high‐protein meal by treating defatted soybean meal, a by‐product of soybean oil production, with dilute acid. Treatments were a mild hydrolysis at 80 °C with sulphuric acid at concentrations ranging from 0.5% to 2.0% (w/v) and times varying from 1 to 16 h that were arranged according to a central composite rotatable experimental design. The end products were an enhanced‐protein meal and a carbohydrate concentrate of fermentable and nonfermentable sugars. The highest protein content rise, from 48% to 58%, was for treatments with concentrations of acid ranging between 1.2% and 1.7% and times between 1.0 and 2.6 h. The maximum yield of fermentable sugar was 21.0% d.b. at 2.0% H 2 SO 4 and treatments of at least 6 h. The conditions that provide a highest protein and sugar contents were the treatments with concentrations of sulphuric acid ranging from 0.9 to 1.9% H 2 SO 4 for 1–4 h.