The effect of methods and drying temperature on glycoside content (Stevioside and Rebaudioside A) in Stevia (Stevia rebaudiana): A systematic review

Abstract The utilization of Stevia rebaudiana as an alternative sweetener in Indonesia is still low, this is caused by a lack of information about its processing from raw material until the extraction process to obtain the glycosides content. Glycosides are the sweetener compound in Stevia rebaudiana with a sweet taste up to 300 times of sucrose, which are stevioside and rebaudioside A. To obtain the glycosides content in stevia, stevia needs to be dried after harvest. Then, dried Stevia will be extracted to obtain the glycosides content. The research method used in this study was a systematic review of selected journals on a specific topic, then were analysed in both the theory and content. The purpose of this research is to analysing the effect of drying temperature on different drying methods on the glycoside compound of Stevia rebaudiana, observing drying temperature that is useful to obtain the optimal glycoside compound in Stevia rebaudiana, and to recommend the utilization of Stevia rebaudiana as an alternative sweetener in Indonesia. The result is the high temperature and low temperature can decrease the glycoside compound in Stevia rebaudiana. The dried temperature that is effective for drying stevia leaves to obtain the maximal glycosides is in the range of 40-60°C. The drying method that is effectively used is by an oven at 60°C as the suggested temperature. Stevia’s sweetener is potentially applied and developed in Indonesia and can be served in powder form because it is more efficient and decrease defect in dried condition and a much longer lifetime.