Determination Of UAE (Ultrasonic Assisted Extraction) Temperature and Time of Content Total Phenolic % Rhizome Temu Giring (Curcuma Heyneana Valeton & Zijp)

Abstract

Temu giring (Curcuma heyneana Valeton & Zijp.) is a type of medicinal plant in the form of rhizomes. The plant is from the Zingiberaceae family. Intersection giring rhizome has various activities including antioxidant, antiviral, antiaging, and antimicrobial. Intersection giring rhizome has secondary metabolites of flavonoids, phenolics, saponins, and essential oils. The study aimed to determine the effect of temperature and time of extraction with UAE (Ultrasonic Assisted Extraction) on the total phenolic content of 70% ethanol extract of temu giring (Curcuma heyneana Valeton & Zijp) rhizome by spectrophotometry. The results showed that the highest total phenolic content was at 40°C for 20 minutes, namely 2.33%GAE, while the lowest total phenolic content was at 30°C for 10 minutes, namely 1.24%GAE