Extraction of total stevioside content from dried stevia rebaudiana bertoni leaves

Abstract

In the present study, some main components of dried Stevia leaves were determined such as protein, lipid, fiber, sugar content, etc. Total stevioside content was extracted by conventional method with hot water as solvent and all parameters in extraction process affect significantly the yield of stevioside. The results indicated the optimal extraction conditions were an extraction temperature of 85°C, sample/solvent ratio of 1/75 (w/v) and an extraction time of 120 min with the highest total stevioside content of 8.36%.