[Determination of epoxidized soybean oil and linseed oil in wrapping film and cap sealing].
A determination method was developed for epoxidized soybean oil (ESBO) and epoxidized linseed oil (ELO), which are used as plasticizers and/or stabilizers, in wrapping film and cap sealings. The ESBO method reported by Castle et al. was improved. Samples were extracted with acetone-hexane (3: 7), transmethylated under alkaline conditions, then derivatized to the 1,3-dioxolanes and analyzed by GC/MS. The recoveries of spiked ESBO and ELO were between 92.6% and 104.4%. The determination limits were 0.01 mg/g for ESBO and 0.02 mg/g for ELO in the wrapping film, and 0.04 mg/g and 0.08 mg/g in the cap sealing. ESBO and ELO were surveyed in 10 samples each of wrapping film and cap sealings currently available on the Japanese market. ESBO was found at 34.7-82.8 mg/g in polyvinyl chloride (PVC) wrapping films and at 5.47-399 mg/g in cap sealings. ELO was detected at 8.6-11.4 mg/g in polyvinylidene chloride (PVDC) wrapping films, and at 46.4 mg/g in a PVC wrapping film.
Kanno
Shinji
S
National Institute of Health Sciences: 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan.
Kawamura
Yoko
Y
Mutsuga
Motoh
M
Tanamoto
Kenichi
K
D005079:Excipients / Q000032:analysis*; D018857:Food Packaging; D008043:Linseed Oil / Q000032:analysis*; D010968:Plasticizers / Q000032:analysis*; D011143:Polyvinyl Chloride / Q000031:analogs & derivatives / Q000032:analysis; D013024:Soybean Oil / Q000032:analysis*
D005079:Excipients; D010968:Plasticizers; D013024:Soybean Oil; D008043:Linseed Oil; C029547:polyvinylidene chloride; D011143:Polyvinyl Chloride