title: Furan formation from fatty acids as a result of storage, gamma irradiation, UV-C and heat treatments.
abstract: The effects of gamma and UV-C irradiation in comparison with thermal processing and storage at 25°C on formation of furan from different fatty acids were investigated. Results showed that furan was generated from polyunsaturated fatty acids such as linoleic and linolenic acid during thermal (120°C, 25 min) and UV-C (11.5 J/cm(2)) treatments. Gamma irradiation (up to 20 kGy) did not induce formation of significant amounts of furan from any of the fatty acids studied. Storage of unsaturated fatty acid emulsions at 25°C for 3 days led to the formation of furan (7-11 ng/mL) even without prior thermal or non-thermal treatments. pH significantly impacted furan formation with >3.5 times more furan formed at pH 9 than at pHs 3 or 6 during 3 days at 25°C. The addition of Trolox, BHA, and propyl gallate had no significant effect on furan formation from linolenic acid while α-tocopherol and FeSO4 promoted furan formation.
authors.affiliation: U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 E. Mermaid Lane, Wyndmoor, PA 19038, USA. Electronic address: xuetong.fan@ars.usda.gov.
authors.forename: Xuetong
authors.initials: X
authors.lastname: Fan
mesh_terms: D000975:Antioxidants / Q000737:chemistry; D005227:Fatty Acids / Q000737:chemistry* / Q000528:radiation effects*; D005663:Furans / Q000138:chemical synthesis*; D005720:Gamma Rays; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D014466:Ultraviolet Rays; D017962:alpha-Linolenic Acid / Q000737:chemistry
chemical_list: D000975:Antioxidants; D005227:Fatty Acids; D005663:Furans; D017962:alpha-Linolenic Acid
keywords: Fatty acid; Furan; Ionizing radiation; Linoleic acid; Linolenic acid; Thermal; UV