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Processing ironweed ( Vernonia anthelmintica ) seed in a soybean extraction pilot plant

1965; Wiley; Volume: 42; Issue: 6 Linguagem: Inglês

10.1007/bf02540105

1558-9331

C. F. Krewson, C L Ogg, F. J. Oelshlegel, Reginald Hale, Andrew Hale,

Banana Cultivation and Research

Abstract High quality domestic Vernonia anthelmintica (ironweed) seed was grown on many experimental test plots at a variety of locations during the 1963 season. Quality appeared to be related to seed density as judged by high oil content of 25 to 32%, the oils having oxirane oxygen values of 3.6 to 4.0% with low acidity, less than 2% calculated as epoxyoleic acid. Larger plantings in 1963 made without benefit of test plot data produced poor quality seed. For processing some of this seed was upgraded to fair quality by air‐elutriation. Processing in a small soybean continuous solvent extraction plant was successfully achieved with only minor changes in existing equipment. No enzymatic lipolysis occurred during these operations. The oil obtained was equal in quality to that prepared from the same seed in the laboratory by the best procedures available. Also, the oil was improved in quality by removal of the major portion of its free fatty acids and unsaponifiable material. The chief natural component of the seed oil, trivernolin, was prepared from a substantial quantity of the oil miscella to demonstrate the commercial feasibility of this operation.