Bladderpod oil

Bladderpod oil is a seed oil, extracted from the seeds of the Physaria fendleri and other species of genus Physaria, Native to the plains and mesas of southwestern United States, eastward to Kansas and southward into northern Mexico.{{Duke Handbook

| sectionurl=Lesquerella_fendleri.html

| section=Lesquerella fendleri (A.Gray) S.Wats.

}} Bladderpod oil is rich in lesquerolic acid (C20:1-OH), a rare hydroxycarboxylic acid. The only commercial source of hydroxycarboxylic acids is ricinoleic acid (C18:1-OH), found in castor oil.{{cite journal

| author=R. Kleiman

| year=1990

| title=Chemistry of new industrial oilseed crops

| pages=196–203

| editor=J. Janick |editor2=J.E. Simon

| journal=Advances in New Crops

| publisher=Timber Press, Portland, OR

| url=http://www.hort.purdue.edu/newcrop/proceedings1990/v1-196.html

| access-date=2006-11-19

}} Essentially all castor oil production in the U.S. has been eliminated by a combination of economic factors, excessive allergenic reactions of field and processing workers, and toxicity of the seed meal.{{cite web

| url=http://www.csdl.tamu.edu/FLORA/Wilson/481/s98/amy.html

| title=Lesquerella pallida - White Bladderpod

| author=Amy Rasberry

| date=April 20, 1998

| access-date=2006-11-19

}} The fatty acid composition of bladderpod oil is:

class=wikitable ! Fatty acid !! Percentage
Palmitic	align="right" | 1.5%
Palmitoleic	align="right" | 1.4%
Stearic	align="right" | 2.4%
Oleic	align="right" | 15.2%
Linoleic	align="right" | 7.6%
Linolenic	align="right" | 13.1%
Ricinoleic	align="right" | 0.3%
Densipolic	align="right" | 0.2%
Lesquerolic	align="right" | 53.2%
Auricolic	align="right" | 3.8%

Other species of bladderpod that yield similar oils include Physaira lindheimeri, Paysonia densipilia, Paysonia auriculata and Physaria pallida. P. fendleri is of particular interest because of the yields of 1,500 kg/ha that have been achieved in only a few years of cultivation.