Determination of ethylene dibromide in tropical fresh fruits using Dean-Stark apparatus and ECD-gas chromatography.
Nakamura Y., Hasegawa Y., Tonogai Y., Hanafusa M., Hirose H., Taharasako Y., Ito Y.
Author Affiliation: Division of Foods, National Institute of Hygienic Sciences, Osaka Branch, 1-1-43, Hoenzaka, Higashi-ku, Osaka 540, Japan.
Journal of Food Protection 51 : 727-730
Abstract : The concentration of residual ethylene dibromide (EDB) in tropical fresh fruits imported to Japan was investigated using the Dean-Stark apparatus and electron capture detection-gas chromatography. Recovery of EDB added to papaya pulp at 0.1 mg/kg was more than 98.1% by that method. The relation between storage conditions and concentration of residual EDB was investigated for mango pulps; it was clarified that EDB content in mango pulps decreased with the storage time at room temperature (25°C) and refrigerated (7°), but the content did not decrease when stored for 6 days at -20°. The concentration of residual EDB in pulps, peels and seeds of fresh fruit (grapefruits, papayas, mangoes and litchis) imported to Japan in 1987 was surveyed. Extremely high concentrations of EDB were found in the seeds of grapefruits.