| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1191147 | Food Chemistry | 2009 | 5 Pages |
Abstract
An analytical method for the stable isotope ratio analysis of vanillin in ice cream and yoghurt is described. The milk proteins were removed by precipitation and vanillin was extracted by liquid–liquid extraction. Several solvents were tested to achieve maximum recovery for vanillin. Separation from accompanying components was performed by semipreparative HPLC. After chromatography several sample preparation techniques for the off-line transfer of the vanillin fractions were tested and optimised to minimise losses of vanillin. The 13C/12C ratio of the fractions was determined by 13C-EA-IRMS. The method was applied to samples obtained from local food stores. The majority of the samples contained authentic vanillin.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Guenther Lamprecht, Karl Blochberger,