Skip to main content
ARS Home » Research » Publications at this Location » Publication #72581
Title: DECORTICATION OF LESQUERELLA FENDLERI AND PROCESS FRACTIONS THEREFROM

Author
item Carlson, Kenneth
item Abbott Dr, Thomas
item ARQUETTE, JAMES - INTL FLORA TECH LTD
item KLEIMAN, ROBERT - INTL FLORA TECH LTD

Submitted to: Industrial Crops and Products International Conference Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 9/23/1996
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: When separated, lesquerella's seed coat (testa, hull) is an efficient substrate for isolating seed surface gums (35-38%). Furthermore, extraction of the oil-rich (40-47%) seed meats co-fraction improves oil extraction efficiency, and provides a protein-rich, low-fiber, defatted meal for feed considerations. Decortication and fractionation of lesquerella seed at both the laboratory and pilot scales has been examined, and the results show that commercial dehulling and fractionation equipment can be used to obtain lesquerella hull fractions (19%) with enriched gum levels (36%). Two commercial impact hullers, operating within their respective speed ranges, gave single-pass decortication levels ranging from 10 to 90%. Speed settings for ca. 60% decortication gave an acceptable balance between the amount of hulls + meats and the level of fines generated. By sequencing a commercial seed screener with a commercial gravity table, 15-25% of the decorticated feed could be isolated as a hull fraction (38% gums). The meats fraction recovered from the gravity table contained 40% oil. The unhulled seed fraction, recovered from screening and gravity table operations, was recycled back to the impact huller for additional decortication followed by second-pass screening and gravity table separations.