Ma. Elena Páez-Hernández

TL;DR: In this article, the most recent advances in the chemical investigation of the anthocyanins are summarised, emphasising the effects of pH, co-pigmentation, metal ion complexation and antioxidant activity on their stability.

TL;DR: A magnetic solid‐phase extraction method combined with capillary electrophoresis for the simultaneous determination of seven quinolones (QNs) using (S)‐(+)‐6‐methoxy‐α‐methyl‐2‐naphthaleneacetic acid as internal standard, in milk samples was developed and offers advantages in terms of simplicity, sensitivity, efficiency, cost, and analysis time.

TL;DR: The determination of oxytetracycline in milk samples using a polymer inclusion membrane concept with high performance liquid chromatography (HPLC) was studied and was successfully applied to the analysis of milk samples with high selectivity.

TL;DR: A method is presented for magnetic solid phase extraction of tartrazine from nonalcoholic beverages that involves the extraction and clean-up by activated carbon covered with magnetite dispersed in the sample, followed by the magnetic isolation and desorption of the analyte by basified methanol.

TL;DR: In this paper, a ligand-exchange mechanism was used to increase the affinity of the resin to the anthocyanin(s) with o-dihydroxy arrangement.