Section 5
Chapter 4,741

Analysis of hydroxy benzoic acids and hydroxy cinnamic acids in plant material 2. determination by gas chromatography

Shulz, J.M.; Herrmann, K.

Journal of Chromatography 195(1): 95-104


ISSN/ISBN: 0021-9673
Accession: 004740086

Factors affecting the quantitative determination of phenolic acids in plant material by GLC of their trimethylsilyl derivatives, employing silicone stationary phases, were investigated. The use of soft glass must be strictly avoided, while borosilicate (Pyrex), quartz and support surfaces must be deactivated by silanization. Both capillary and packed columns were used. The method developed was applied to the analysis of phenolic acids in spices and by careful attention to the factors discussed; excellent results were achieved.

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