Review Article on Phytochemical and Pharmacological Activities of Alpinia purpurata and Erythrina variegata

In this review the phytochemistry and pharmacology of an ornamental ginger, Alpinia purpurata (red ginger) and Erythrina variegata are updated. Alpinia is the largest genus in ginger family in which. The phytochemical studies on Alpinia purpurata revealed that it possess flavonoids, rutin, kaempferol-3-rutinoside and kaempferol-3-glucuronide. These phytoconstituents promote antimicrobial activity, anti-inflammatory disease and also have the potential to treat tuberculosis. It also serves as a potential source of natural antioxidants. Alpinia purpurata also used for headache, sore throat and renal disease. Plant Erythrina variegata rich in secondary metabolites such as phenolics, alkaloids, tannins. and saponins in their ethanolic extract. They also show anti-allergic, anti-inflammatory, antimicrobial and anticancer activity. In the phytochemical investigation, ethanolic extract of Erythrina variegata L. flowers confirmed more phytoconstituents while comparing to leaf and bark. The Erythrina variegata flowers exhibit more antioxidant activity and also have high protective activity against oxidative stress and also helps to fight against diseases like cancer, diabetes mellitus and other diseases.