COMPREHENSIVE CGC-IRMS ANALYSIS IN THE AUTHENTICITY CONTROL OF FLAVORS AND ESSENTIAL OILS .1. LEMON OIL

被引:31
作者
BRAUNSDORF, R [1 ]
HENER, U [1 ]
STEIN, S [1 ]
MOSANDL, A [1 ]
机构
[1] JOHANN WOLFGANG GOETHE UNIV,INST LEBENSMITTELCHEM,ROBERT MAYER STR 7-9,D-60325 FRANKFURT,GERMANY
来源
ZEITSCHRIFT FUR LEBENSMITTEL-UNTERSUCHUNG UND-FORSCHUNG | 1993年 / 197卷 / 02期
关键词
D O I
10.1007/BF01260310
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
The deltaC-13PDB values of nine flavour compounds from five different lemon oils were determined using gas chromatography-isotope ratio mass spectrometry. By definition of a suitable internal isotopic standard (i-IST), the influence of CO2 fixation during photosynthesis is eliminated. The isotopic effects among genuine monoterpenes are, therefore, limited to the influence of enzymatic reactions during secondary biogenetic pathways. Calculating versus nerylacetate as an i-IST yields fruit-specific deltaC-13 values for neral and geranial with low standard deviation and seems to be suitable for authenticity control of lemon oils.
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页码:137 / 141
页数:5
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