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Prepress solvent extraction of cuphea seed
Author(s) -
Carlson Kenneth D.,
Kleiman Robert,
Pavlik Robert P.
Publication year - 1993
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/bf02564240
Subject(s) - screw press , extraction (chemistry) , cooker , pulp and paper industry , materials science , mathematics , horticulture , chemistry , botany , chromatography , composite material , biology , engineering , mechanical engineering
Simulation of commercial processing of Cuphea seed to obtain needed quantities of oil and meal was accomplished with pilot facilities. Cuphea seed was conditioned in a single‐deck cooker. Cooked seed was pressed with a mechanical screw with two‐speed shaft, variable‐speed drives and a four‐section cage with cored sleeves. A feed rate of 22 kg seed/h and a feed screw‐to‐main shaft ratio of 2:1 gave good press cake with 8.1% residual oil. Press cake was extracted in a batch‐type modular extraction pilot plant. Miscella stages were sequentially pumped through the beds, followed by hexane rinses. Spent cake was desolventized and toasted, and full miscellas were stripped to recover the crude oil. The finished Cuphea meal had only 0.30–0.55% residual oil. Thus, conditioned Cuphea seed was easily pressed without prior flaking to acceptable cakes, and conditions simulating commercial solvent extraction efficiently removed residual cake oil.