DEVELOPMENT OF YANANG (Tiliacora triandra) LIQUIDS SOAP AND ITS ANTIOXIDANT ACTIVITY
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Abstract
This study aimed to investigate the antioxidant activity of Tiliacora triandra (Yanang) extract and develop a liquid-soap product using the Yanang extract with desirable chemical-and-physical stability. Mature Yanang leaves were dried at 50°C, ground into powder, and extracted with 95% ethanol in a 1:20 ratio. The antioxidant activity of the extract was examined using the DPPH radical scavenging assay. Five formulations of liquid soap of Yanang extract were developed and compared with a base formulation. Their chemical and physical properties were analyzed, including foam quantity and foam stability. The results showed that the Yanang extract had antioxidant activity with an IC50, value of 1.46 mg/mL, while the standard ascorbic acid had an IC50 value of 0.08 mg/mL. Testing of Chemical and physical property indicated that formulation 2 and 3 exhibited the highest chemical and physical stability, since there was no phase separation, and no color alteration (p>0.05). They had appropriate pH values that were non-irritating to the skin, at 7.44±0.00 and 7.42±0.09 (p>0.05), and suitable viscosity levels of 1,316±17.47 cP and 1,248±40.36 cP (p>0.05). In addition, immediate foam stability was 1.03±0.15 cm and 1.10±0.10 cm (p>0.05), also foam stability at 5 minutes was 0.9±0.10 cm and 0.9±0.20 cm (p>0.05). These findings suggested that Tiliacora triandra extract has possessed antioxidant properties and could be effectively developed a chemically and physically stable liquid-soap product, especially formulation 2 and 3, which demonstrated suitably concentrated extract and the ability to further utilize.
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