Determination of antioxidant activity, rutin, quercetin, phenolic acids and trace elements in tea infusions: Influence of citric acid addition on extraction of metals

- HR-CS GFAAS and HPLC/MS/MS methods were developed for analysis of tea samples.
- Influence of citric acid on extraction of metals from tea was investigated.
- Antioxidative activity of tea infusions was tested.
- Flavonoids and phenolic acids were determined in tea infusions.