For vitamin C tablets, inter- and intra-day precisions were 0.4% and 0.5%, respectively
(HPLC), and 0.5% and 0.3%, respectively (UPLC). Both methods were sensitive: LOD was 0.049 l g/mL for
HPLC and 0.024l g/mL for UPLC while LOQs were 0.149 and 0.073 lg/mL for HPLC and UPLC, respectively.
These methods could be useful in the routine qualitative and quantitative analysis of AA or TAA in phar-maceutical preparations or fruit beverages.