Normal tea Camellia sinensis extract is renowned for its therapeutic potential in terms of antioxidant, antimicrobial and anticancer values. The volatile and nonvolatile secondary metabolites like catechins, tannins are responsible for such properties. Herbal teas (tisanes) are herbal infusions are beverages made from the infusion or decoction of herbs, spices, or other plant material in hot water. Chamomile, lavender, lemongrass, jasmine, hibiscus, butterfly blue pea extracts of all the medicinally valid plant extracts (either shoot or from flower) are carrying therapeutically important active secondary metabolites to show antioxidant, antimicrobial, anticancer values. The infusions made from them have enormous commercial values. Once all those infusions are mixed with normal tea it increases the therapeutic values of the former and called as medicinal tea. The evaluation of therapeutic values of all the commercially available medicinal and herbal teas could be done with antioxidant, antimicrobial and anticancer value assay methods. Then further the total responsible candidates like non-volatile and volatile active secondary metabolites could be scored with E-sensor based detection techniques like E-nose and E-tongue. The correlation analysis of antioxidant, antimicrobial and anticancer data with E-nose and E-tongue score helps to derive the therapeutic indices of Medicinal and Herbal teas. Moreover thus it would help to validate the therapeutic potentials of unknown samples of medicinal and herbal teas based upon the indices derived from E-nose (volatile) and E-tongue (nonvolatile/soluble) data.
Sudeshna Shyam Choudhury, Jaydip Ghosh, Arun Kumar Jana, Sejuti Roy, Renu Kumari Prasad, Anushree Pratihar. Development of therapeutic index of different types of herbal and medicinal teas. J Med Plants Stud 2022;10(4):106-112.