10 AUGUST 2020
Sample Ulam Raja mixed with methanol with different percentage
Sample dried in solvent concentrator
I helped one of Dr. Ong's PHD student, Nurliza on her project entitled "Ulam Raja extraction Ultrasonic assisted extraction technique (Direct method)". On the first step, mixed the Ulam Raja with water and different concentrations of methanol (20%, 50%, 80%) to observe which suitable range can be used and dried it in solvent concentrator. Higher the concentration of methanol, faster the solution dried rather than water due to boiling point of the methanol lower than boiling point of water.