Karakteristik Mikroemulsi Minyak Atsiri Kulit Buah Lemon (Citrus limon) Pada Penambahan Kosurfaktan Dan Rasio Surfaktan-Kosurfaktan Dengan Minyak Atsirinya
Authors: Pradnyani Putu Dhea , Suhendra Lutfi , Antara I Nyoman Semadi 
Published: January 2025

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.
Keywords : Microemulsion, ratio, surfactant, co-surfactant, citrus limon
 
ABSTRAK
 
Minyak atsiri dari kulit buah lemon (Citrus limon) mempunyai aroma khas yang dapat digunakan sebagai body mist. Body mist merupakan salah satu jenis parfum dengan kandungan minyak atsiri sebesar 3-5%. Mikroemulsi minyak atsiri kulit buah lemon merupakan salah satu produk body mist yang berbasis air. Mikroemulsi minyak atsiri buah lemon terbentuk dari campuran surfaktan (Tween 20, Tween 80 dan Span 80), ko-surfaktan, Polieteline glikol (PEG) 400, minyak atsiri buah lemon dan air. Tahap pertama penelitian adalah pembentukan mikroemulsi minyak atsiri kulit buah dengan perlakuan rasio campuran surfaktan dan ko-surfaktan. Tahap kedua penelitian adalah pembentukan mikroemulsi minyak atsiri kulit buah dengan perlakuan rasio campuran surfaktan-kosurfaktan dan minyak atsiri kulit buah lemon. Hasil tahap pertama menunjukkan bahwa mikroemulsi minyak atsiri kulit buah lemon dengan rasio campuran surfaktan dan Polietilen Glikol (PEG) 400 (50:50) mempunyai nilai indeks turbiditas 0,092%, transmisi 91,6%, tidak lengket, transparan dan stabil terhadap sentrifugasi. Hasil tahap pertama digunakan pada tahap kedua yaitu rasio campuran surfaktan dan PEG 400 (50:50). Hasil tahap kedua yaitu rasio campuran surfaktan-PEG 400 dan minyak atsiri kulit buah lemon (80:20) menunjukkan bahwa konsentrasi minyak atsiri kulit buah lemon tertinggi yang masih membentuk mikroemulsi minyak atsiri kulit buah lemon. mikroemulsi minyak atsiri kulit buah lemon ini mempunyai nilai indeks turbiditas 0,089%, transmisi 91,23%, kenampakan transparan, stabil terhadap sentrifugasi, stabil terhadap pH (4,5; 5,5; 6,5), stabil terhadap pengenceran (1:9; 1:49; 1:99), stabil selama penyimpanan 4 minggu, mempunyai ukuran partikel rata-rata 32,2 nm dan nilai polidispersi indeks (PI) di bawah 0,5.
Kata kunci : Mikroemulsi rasio, surfaktan, ko-surfaktan, citrus limon