UV Treatment of Fishmeal: A Method To Remove Dioxins?

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• 作者：Caroline P. Baron ; Torger Bp ; //pubs.acs.org/images/gifchars/oslash.gif" border="0">rresen ; and Charlotte Jacobsen
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2005
• 出版时间：September 7, 2005
• 年：2005
• 卷：53
• 期：18
• 页码：7091 - 7097
• 全文大小：88K
• 年卷期：v.53,no.18(September 7, 2005)
• ISSN：1520-5118

文摘

This study evaluates the use of UV on contaminated fishmeal and photodegradation of dioxins.Fishmeal samples were placed under UVA or UVB light for 2, 5, and 10 days. Subsequently, analysisof amino acid content, lipid oxidation marker, ethoxyquin content, dioxin, and polychlorinated biphenyl(PCB) profiling was carried out. Exposure of fishmeal for 5 days to UVB light resulted in the degradationof approximately 70% of the dioxin content, while UVA had little effect, only resulting in the degradationof 10% of the dioxin content. UVB did not affect the protein and amino acid content of fishmeal;however, lipid oxidation was triggered. Addition of ethoxyquin prevented oxidation but simultaneouslyslowed dioxin breakdown. Increasing UVB intensity resulted in a more efficient dioxin degradation of90%. Exposure of fishmeal to UVB also resulted in an increase in PCBs. UVB light is shown tophotodegrade dioxin in fishmeal, indicating the needs to further investigation of methods for applicationat industrial scale.Keywords: Fishmeal; UV; dioxins; TCDD; PCBs