SYNTHESIS, CHARACTERIZATION AND USE OF 2-TETRADECYLCYCLOBUTANONE TOGETHER WITH OTHER CYCLOBUTANONES AS MARKERS FOR IRRADIATED LIQUID WHOLE EGG

被引:35
作者
CRONE, AVJ
HAND, MV
HAMILTON, JTG
SHARMA, ND
BOYD, DR
STEVENSON, MH
机构
[1] QUEENS UNIV BELFAST,DEPT FOOD SCI,BELFAST BT7 1NN,ANTRIM,NORTH IRELAND
[2] DEPT AGR NO IRELAND,DIV FOOD & AGR CHEM RES,BELFAST BT9 5PX,NORTH IRELAND
[3] QUEENS UNIV BELFAST,SCH CHEM,BELFAST BT7 1NN,ANTRIM,NORTH IRELAND
关键词
DETECTION; IRRADIATION; EGG; 2-DODECYLCYCLOBUTANONE; 2-TETRADECYLCYCLOBUTANONE; 2-TETRADECENYLCYCLOBUTANONE; 2-TETRADECADIENYLCYCLOBUTANONE;
D O I
10.1002/jsfa.2740620409
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
The synthesis and characterisation of 2-tetradecylcyclobutanone (TCB) is described. Both 2-dodecylcyclobutanone and TCB were shown to be present in liquid whole egg irradiated at doses of 2.5 and 10.0 kGy. These compounds were absent from the unirradiated pasteurised samples. Using gas chromatography and infrared spectroscopy, there was also evidence for the presence in irradiated egg of 2-tetradecenyl- and 2-tetradecadienylcyclobutanone which are formed from oleic and linoleic acids, respectively. Authentic standards for these unsaturated cyclobutanones were not available commercially but the presence of 2-tetradecenylcyclobutanone was substantiated by hydrogenating the egg extracts so converting this unsaturated cyclobutanone to TCB. Saturated and unsaturated cyclobutanones appear to be specific products of irradiation and are potential markers for detection of irradiated liquid egg and probably other fat-containing foods.
引用
收藏
页码:361 / 367
页数:7
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