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Title: LESQUERELLA GUMS: PROCESSING CONSIDERATIONS FOR ISOLATING GUMS FROM LESQUERELLA SEED

Author
item Carlson, Kenneth
item Abbott Dr, Thomas
item ARQUETTE, JAMES - INT'L FLORA TECH LTD
item Kleiman, Robert

Submitted to: Annual Lesquerella Field Day
Publication Type: Abstract Only
Publication Acceptance Date: 4/25/1995
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Laboratory and pilot-scale processes have been examined for efficient recovery of oil from lesquerella seed, including cooking, flaking, pressing and extrusion of seed, oil recovery by solvent extraction, and degumming, bleaching and alkali refining of the oil. Seed surface gums are activated by moisture at several processing stages, and these gums affect seed processing and oil quality. Abbott et al. isolated, characterized, and suggested uses for several L. fendleri gums fractions obtained from seed, presscake and defatted meal. If separated, the seed coat (hull) would be a more efficient substrate for isolating some or all of the lesquerella gums, and extraction of the oil-rich seed meats would improve oil extraction efficiency, and provide a protein-rich, low-fiber defatted meal for feed formulations. Initial hulling experiments suggested that lesquerella hulls could be freed from the seed meats without excessive fracturing of the meats. Further research showed that lesquerella seed can be substantially dehulled and separated into hulls and meats fractions in a single-pass-stream with commercially available equipment. We report the implications of this research as related to gums, oil and meal recovery from lesquerella.