Identification of 2-alkylcyclobutanones in nutmeg (Myristica fragrans)

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• 作者：Susu Chen^a ; ^c ; Tomoaki Tsutsumi^b ; Satoshi Takatsuki^b ; Rieko Matsuda^b ; Hiromi Kameya^a ; Mitsutoshi Nakajima^c ; Masakazu Furuta^d ; Setsuko Todoriki^a ; ^{setsuko@affrc.go.jp}
• 关键词：2-ACB ; 2-alkylcyclobutanone ; 2-CHCH ; 2-cyclohexylcyclohexanone ; 2-DCB ; 2-decylcyclobutanone ; 2-dDCB ; 2-dodecylcyclobutanone ; EI ; electron ionization ; EN ; European norm ; FW ; fresh weight ; GC ; gas chromatograph ; GC&ndash ; MS ; gas chromatography&ndash ; mass sp
• 刊名：Food Chemistry
• 出版年：2012
• 期刊代码：48_03088146
• 类别：abs
• 出版时间：1 September, 2012
• 卷：134
• 期：1
• 页码：359-365
• 文件大小：405 K

摘要

The natural existence of the irradiation markers, namely, 2-decylcyclobutanone (2-DCB) and 2-dodecylcyclobutanone (2-dDCB), in nutmeg (Myristica fragrans) has recently been reported. In this study, 2-DCB and 2-dDCB were extracted from nutmeg of five different origins using supercritical fluid extraction (SFE). A 50-kGy irradiated sample was used to optimise the parameters of SFE and solid-phase extraction. The irradiated samples were analysed by gas chromatography-mass spectrometry, whereas the non-irradiated samples were analysed with high-resolution gas chromatography-mass spectrometry. Both 2-DCB and 2-dDCB were detected and identified in the irradiated samples at 5 kGy or greater. However, neither was present in the non-irradiated samples. Moreover, although the concentrations of 2-DCB and 2-dDCB were significantly reduced, a positive identification was obtained in irradiated nutmeg even after 30 weeks of storage.