However, enzymatic
analysis require specific kits for each organic acid, they are
time-consuming and use large amounts of reagents, which make
them expensive. On the other hand, chromatographic methods,
such as traditional HPLC, usually require purification techniques
to eliminate matrix interferences ,
which has a negative influence on the simplicity and
quickness of the method, especially for routine quality control
analysis. Then, other techniques, such as capillary electrophoresis
(CE), have been also described