Characteristics Of Lemon Peel (Citrus limon) Essential Oil Microemulsion On The Addition Of Cosurfactants And The Ratio Of Surfactants With The Essential Oil

Abstract

Essential oil from lemon peel (Citrus limon) has a distinctive aroma that can be used as a body mist. Body mist is a type of perfume with an essential oil content of 3-5%. Lemon peel essential oil microemulsion is a water-based body mist product. Lemon essential oil microemulsion is formed from a mixture of surfactants (Tween 20, Tween 80 and Span 80), co-surfactant, Polyethylene Glycol (PEG) 400, lemon essential oil and water. The first stage of the research was the formation of fruit peel essential oil microemulsions by treating the mixture ratio of surfactant and co-surfactant. The second stage of the research was the formation of fruit peel essential oil microemulsions by treating the ratio of a mixture of surfactant-cosurfactant and lemon peel essential oil. The results of the first stage showed that the microemulsion of lemon peel essential oil with a mixture ratio of surfactant and PEG 400 (50:50) had a turbidity index value of 0.092%, transmittance of 91.6%, was non-sticky, transparent and stable against centrifugation. The results of the first stage are used in the second stage, namely the mixture ratio of surfactant and Polyethylene Glycol (PEG) 400 (50:50). The results of the second stage, namely the ratio of the mixture of surfactant-PEG 400 and lemon peel essential oil (80:20), showed that the concentration of lemon peel essential oil was the highest which still formed a microemulsion of lemon peel essential oil. This lemon peel essential oil microemulsion has a turbidity index value of 0.089%, transmittance of 91.23%, transparent appearance, stable to centrifugation, stable to pH (4.5; 5.5; 6.5), stable to dilution (1: 9; 1:49; 1:99), stable during 4 weeks of storage, has an average particle size of 32.2 nm and a polydispersion index (PI) value below 0.5.