Gingerol is a compound found in red ginger that is used in medicine as an analgesic. Soxhlet extraction is a popular method for isolating gingerols, but it has its drawbacks. It requires a long process with unsatisfactory results. This study aimed to study the effect of ultrasonic frequency on increasing gingerol yield in the extraction process itself. Extraction times of 30, 60, 90, and 120 minutes were examined as variables. Moreover, ultrasonic effects were observed at ultrasonic frequency variations of 40 and 50 kHz compared to the solvent extraction method. In this study, we used 70% (v/v) ethanol as the solvent and an operating temperature of 50 °C as a fixed variable. Additionally, a rotary vacuum evaporator was used at a pressure of 350 mmHg to separate the resulting gingerol extract. To determine total gingerol extractables, qualitative samples were analyzed using thin layer chromatography (TLC) and scanning electron microscopy (SEM), and quantitative samples were analyzed using high performance liquid chromatography (HPLC), brand Waters Alliance e2695. Analyzed using with X-Terra. RP18 column 100 x 4.6 mm, 5 µm. The results show that the ultrasonic power had a significant effect on the results obtained, with the highest recovery of 24.71% at an ultrasonic frequency of 50 kHz and an extraction time of 120 minutes.
Author(s) Details:
Herliati Rahman,
Chemical Engineering, Faculty of Industrial Technology, Jayabaya University, Jalan Raya Bogor km.28,8 Cimanggis Jakarta Timur, Indonesia.
Satrio Nur Prambudi,
Chemical Engineering, Faculty of Industrial Technology, Jayabaya University, Jalan Raya Bogor km.28,8 Cimanggis Jakarta Timur, Indonesia.
Wahyu Endranaka,
Chemical Engineering, Faculty of Industrial Technology, Jayabaya University, Jalan Raya Bogor km.28,8 Cimanggis Jakarta Timur, Indonesia.
Please see the link here: https://stm.bookpi.org/COSTR-V6/article/view/8416
