Acronyms and abbreviations


Gas Chromatography in Food Authentication DOI: http://dx.doi.org/10.5772/intechopen.88512

2.7 Coffee and tea

3. Conclusions

Acknowledgements

Conflict of interest

Acronyms and abbreviations

Differentiation of coffee samples is based mostly on fatty acid profiles and

Gas chromatograph, as a common instrument in most analytical laboratories worldwide, can be successfully applied in authentication and fraud detection procedures of various food and beverage products, such as olive oil and other edible vegetable oils, honey and other bee products, milk and dairy products, cereals and bakery products, meat, fish and seafood, as well as coffee and tea. In this manner, gas chromatograph is coupled to flame ionization detector or single/tandem mass spectrometers. It can be concluded that utilization of a GC device in further development of authentication methodologies could provide us with meaningful results, thus representing a significant contribution to this emerging field in the future.

The authors would like to acknowledge the support from the Ministry of Edu-

cation, Science and Technological Development of the Republic of Serbia.

The authors declare that they have no conflict of interest.

C-IRMS combustion isotope ratio mass spectrometry

GC-chiral GC fast multiple heart-cut enantioselective multidimensional

AHC agglomerative hierarchical clustering

ANN artificial neural networks

CA correspondence analysis CDA canonical discriminant analysis CNN counterpropagation neural network

CVA canonical variates analysis DA discriminant analysis

FID flame ionization detector

GA genetic algorithm GC gas chromatography

118

DPLS discriminant partial least squares

gas chromatography

volatile and semi-volatile compounds (organic acids, sugars, terpenoids). Differentiations of various tea plants were based exclusively on volatile components. In order to enable differentiations and classifications of investigated samples of beverages, the data obtained after GC analysis were combined with various chemometric techniques: HCA, PCA, SLDA and OPLS-DA. Table 7 represents chronological literature data on the authentication and adulteration detection

Gas Chromatography - Derivatization, Sample Preparation, Application

procedures of coffee and tea from various plant species.

