Evaluation of total amount of phenolic compounds, flavonoids and antioxidant activity in medical functional teas by means of spectrophotometric methods

Abstract

In recent years there has been increasing interest worldwide in the use of alternative - herbal medicine and this shows, that the tea is the most popular drug form produced from medicinal herbs. The raw material of medicinal teas were provided by from "Švencioniu vaistažolės", which is one of 4 producers currently existing in Lithuania. Preparations of herbal origin are generally used in treatment of digestive, respiratory tract, and nervous system problems. For analysis was taken these compositions of medicinal herbs: 1) Species expectorales cum liquiritiae radices; 2) Species cholagoga; 3) Species diaphoretica; 4) Species cholametabolica ; 5) Species sedative; 6) Species pectorals; 7) Species antihaemorrhoidales; [...]. These species of medicinal herbs contain various bioflavonoids and phenolic compounds, which are widely used for prevention and treatment of various illnesses. It is known that the mixtures of medicinal herbs have a complex influence on the human organism and the rational combination of medicinal herbs can improve their curative action and decrease the undesirable side effects. [...]