title: Study of the main constituents of some authentic walnut oils.
abstract: This paper describes the composition of walnut oils obtained from nuts collected from seven countries that are major suppliers of walnut oil. Oils were extracted from the nuts using small-scale industry pressing equipment and analyzed using standard methods for fatty acids, fatty acids in the triacylglycerol 2-position, tocopherols and tocotrienols, triacylglycerols, sterols, steradienes, and iodine value. Values for the composition of the sterols, triacylglycerols, fatty acids, iodine value, and tocopherol composition were generally in good agreement with the results of previous similar surveys. Tocotrienols were not detected in any sample. Steradienes (stigmastadiene, campestadiene, stigmastatriene, and campestatriene) were not detected in any oil.
authors.affiliation: Central Science Laboratory, Sand Hutton, York YO41 1LZ, United Kingdom. c.crews@csl.gov.uk
authors.forename: Colin
authors.initials: C
authors.lastname: Crews
authors.forename: Patrick
authors.initials: P
authors.lastname: Hough
authors.forename: John
authors.initials: J
authors.lastname: Godward
authors.forename: Paul
authors.initials: P
authors.lastname: Brereton
authors.forename: Michelle
authors.initials: M
authors.lastname: Lees
authors.forename: Sebastien
authors.initials: S
authors.lastname: Guiet
authors.forename: Wilfried
authors.initials: W
authors.lastname: Winkelmann
mesh_terms: D005227:Fatty Acids / Q000032:analysis; D007455:Iodine / Q000032:analysis; D031324:Juglans / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry*; D011786:Quality Control; D013261:Sterols / Q000032:analysis; D024505:Tocopherols / Q000032:analysis; D014280:Triglycerides / Q000032:analysis
chemical_list: D005227:Fatty Acids; D010938:Plant Oils; D013261:Sterols; D014280:Triglycerides; D007455:Iodine; D024505:Tocopherols