title: Effect of Furan Fatty Acids and 3-Methyl-2,4-nonanedione on Light-Induced Off-Odor in Soybean Oil.
abstract: Soybean oil is one of the most widely consumed vegetable oils. However, under photooxidative conditions, this oil develops a beany and green off-odor through a mechanism that has not yet been elucidated. Upon photooxidation, 3-methyl-2,4-nonanedione (3-MND) produces a strong aroma. In this study, the effect of furan fatty acids and 3-MND on odor reversion in soybean oil was investigated. Our findings suggest that the observed light-induced off-odor was likely attributable to the furan fatty acids present in the oil through the generation of 3-MND. While 3-MND may not be directly responsible for the development of light-induced off-odor, this compound appears to be involved because off-odor was detected in canola oil samples containing added 3-MND. In addition, in the present work, 3-hydroxy-3-methyl-2,4-nonanedione, which is derived from 3-MND, was identified for the first time in light-exposed soybean oil and shown to be one of the compounds responsible for odor reversion.
authors.affiliation: J-Oil Mills, Incorporated , 7-41 Daikoku-cho, Tsurumi-ku, Yokohama 230-0053, Japan.
authors.forename: Takashi
authors.identifier: http://orcid.org/0000-0002-8341-9143
authors.initials: T
authors.lastname: Sano
authors.affiliation: J-Oil Mills, Incorporated , 7-41 Daikoku-cho, Tsurumi-ku, Yokohama 230-0053, Japan.
authors.forename: Ryo
authors.initials: R
authors.lastname: Okabe
authors.affiliation: J-Oil Mills, Incorporated , 7-41 Daikoku-cho, Tsurumi-ku, Yokohama 230-0053, Japan.
authors.forename: Maiko
authors.initials: M
authors.lastname: Iwahashi
authors.affiliation: J-Oil Mills, Incorporated , 7-41 Daikoku-cho, Tsurumi-ku, Yokohama 230-0053, Japan.
authors.forename: Jun
authors.initials: J
authors.lastname: Imagi
authors.affiliation: J-Oil Mills, Incorporated , 7-41 Daikoku-cho, Tsurumi-ku, Yokohama 230-0053, Japan.
authors.forename: Toshiro
authors.initials: T
authors.lastname: Sato
authors.affiliation: Division of Metabolomics, Research Center for Transomics Medicine, Medical Institute of Bioregulation, Kyushu University , 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Yamashita
authors.affiliation: Department of Biotechnology, Graduate School of Engineering, Osaka University , 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
authors.forename: Eiichiro
authors.initials: E
authors.lastname: Fukusaki
authors.affiliation: Division of Metabolomics, Research Center for Transomics Medicine, Medical Institute of Bioregulation, Kyushu University , 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.|Department of Biotechnology, Graduate School of Engineering, Osaka University , 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Bamba
mesh_terms: D000473:Alkanes / Q000737:chemistry*; D003931:Diacetyl / Q000031:analogs & derivatives* / Q000737:chemistry; D005227:Fatty Acids / Q000737:chemistry*; D005663:Furans / Q000737:chemistry*; D008027:Light; D009812:Odorants / Q000032:analysis; D013024:Soybean Oil / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D000473:Alkanes; D005227:Fatty Acids; D005663:Furans; D013024:Soybean Oil; C475572:3-methyl-2,4-nonanedione; D003931:Diacetyl; C039281:furan
keywords: 3-hydroxy-3-methyl-2,4-nonanedione; 3-methyl-2,4-nonanedione; furan fatty acids; light-induced off-odor; soybean oil