Physicochemical Characteristics and Anti-Bacterial Ability of Liquid Soap with the Addition of Pandan Wangi Extract

Abstract

Pandan wangi leaves have bioactive properties that can inhibit the growth of Staphylococcus aureus and Escherichia coli bacteria so they can prevent skin infections. The ability of pandan wangi leaf extract to inhibit microbial growth can be applied to liquid soap. This research was conducted to determine the characteristics of liquid soap with the addition of pandan wangi leaf extract. This study used a completely randomized design with five treatments and three replications. The treatment in this study was a variation of adding pandan wangi leaf extract to the liquid. soap formulation, which were 1.5; 2.0; 2.5; 3.0; and 3.5 grams. The data obtained was analyzed statistically using analysis of variance (ANOVA). The results of variance showed that the addition of pandan wangi leaf extract had a significant effect on foam stability, acidity (pH), anti-bacterial activity test, and sensory test. The liquid soap treatment chosen in this study was the addition of 3.5 grams of pandan wangi extract with a foam stability value of 81.52%, specific gravity of 1.0596 g/ml, viscosity of 271.7 mPas, acidity of 9.02, amount of free alkali 0%, has an anti-bacterial inhibition zone against Escherichia coli 11.22 mm and Escherichia coli 12.22 mm, does not irritate, and is preferred by hedonic panelists with a description of pandan wangi aroma.