Extraction of oil from ground corn using ethanol

FIG. 5. Concentration profiles of total solids, oil, and moisture in the
extract during multiple-stage extraction with fresh corn using recycled
ethanol in each stage. Absolute ethanol (0.16% moisture) was used in
the first stage. Solvent-to-solids ratio was 4 mL/g corn in each stage.
Temperature was 50°C, and extraction time was 30 min in all stages.
FIG. 6. Yield of oil and total solids during multiple-batch extraction with
fresh corn and recycled ethanol in each stage. Same experiment as
shown in Figure 5.
FIG. 7. Multiple-batch extraction using recycled corn and fresh ethanol.
Absolute ethanol was used in each stage. Solvent-to-solids ratio was 4
mL/g corn, temperature was 50ºC, and extraction time was 30 min.

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[Received January 2, 2002; accepted May 27, 2002]
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J.R. KWIATKOWSKI AND M. CHERYAN
JAOCS, Vol. 79, no. 8 (2002)