Extraction of polyphenol from Clinacanthus Nutans Lindau medicinal plant using solvent-free microwave extraction (SFME): article

Clinacanthus Nutans Lindau (C. nutans) is one of the family ‘Acanthaceae’. In Malaysia, C. nutans is known as Sabah Snake Grass or ‘Belalai Gajah’. C. nutans is wellknown with their high polyphenol content and one of the medicinal plants traditionally used to treat various diseases and injuries because of their potential therapeutic benefits. In this work, solvent-free microwave extraction (SFME) method have been used to extract polyphenols from C. nutans. The effect on extraction is analysed: microwave power and extraction time. In order to explain more the efficiency in extraction of the polyphenol content, energy absorbed during the exposure to the microwave radiation has been studied and analysed. Results indicate that the polyphenol content extracted by SFME which used microwave power of 240 W and extraction time of 1 min, 1.4610 mg GAE/g DS is the best result.