ARS | Publication request: Diversity In Oil Content And Oil Profile In Seeds Of Limnanthes Accessions Maintained By The U.S. National Plant Germplasm System

Submitted to: Proceedings Assoc for Advancement of Industrial Crops (AAIC) Annual Meeting
Publication Type: Abstract Only
Publication Acceptance Date: August 4, 2009
Publication Date: November 14, 2009
Citation: Jenderek M.M., T. Isbell and D.A. Dierig. 2009. Diversity in oil content and oil profile in seeds of limnanthes accessions maintained by the U.S. National Plant Germplasm system. Proceedings Assoc for Advancement of Industrial Crops, Termas de Chillán, Chillán, Chile, November 14-19th, 2009 pp. 65 Meeting Abstract.

Technical Abstract: Oil profile in seeds of Limnanthes accessions maintained by the U.S. National Plant Germplasm System collection. Limnanthes (Limnanthaceae; meadowfoam) seeds contain long chain fatty acids which are stable under metabolic and environmental conditions. The fatty acid composition makes the oil valuable for use in cosmetics, lubricants, rubber additives and plastics. The oil content in seeds vary, however 95% of the oil comprised of four main acids as cis-5-eicosenoic (C20:1), cis-5-docosenoic (C22:1), cis-13-docosenic (eruic acid, 22:1) and cis-5-cis-13-docosadienoic (22:2) acids. Wild meadowfoam plants typically grow in vernal pools and valley grasslands of California and Oregon; however a few cultivars are grown on a production scale in Willamette Valley, Oregon. The purpose of this study was to evaluate the oil profile of selected fatty acids in seeds of Limnanthes accessions maintained in the NPGS germplasm collection. Ethyl ester samples extracted from seeds of 67 accessions were analyzed (SP2380 x 0.25 mm x o.2 um col 165(7)^x30>270(5) 250/50) for content of eight fatty acids. The total oil content varied from 11.1 to 30.0% and was the highest in PI 374792. The highest content of palmitoleic acid (C16:1) was in PI 349685 (2.6%), arachidic acid (C20:0) in PI 283719 (6.1%), ecosenoic acid (C20:1d11) in PI283714 (3.8%), erucic acid (C22:1d13) in PI 283725 (6.2%), and nervonic acid (C24:1) in PI 374805 (1.8%). The total oil content and its composition depended on the accession, species and harvest year. The data may be useful for breeders and researchers involved in meadowfoam crop improvement and will be entered in the database of the Germplasm Resource Information System.