Pengaruh Variasi Konsentrasi Dinatrium EDTA Terhadap Stabilitas Fisika dan pH Sediaan Salep Ekstrak Etanol Daun Jambu Biji (Psidium guajava L.)
Abstract
Daun jambu biji (Psidium guajava L.) merupakan salah satu tanaman yang berkhasiat, karena mengandung metabolit sekunder saponin, tanin, flavonoid, serta alkaloid. Senyawa-senyawa tersebut memiliki sifat antibakteri. Kandungan antibakteri pada daun jambu biji ini menjadi dasarpengembangan sediaan dalam bentuk salep yang berkhasiat sebagai antibakteri dengan memvariasikan salah satu bahan sebagai penstabil yaitu dinatrium EDTA. Tujuan dari penelitian ini adalah mengetahui pengaruh konsentrasi dinatrium EDTA tehadap stabilitas fisika sediaan salep ekstraketanol daun jambu biji (Psidium guajva L.). Dalam penelitian ini dibuat 3 formula dengan variasi konsentrasi dinatrium EDTA yaitu F1 (0,05%); F2 (0,08%) serta F3 (0,10%). Evaluasi stabilitas fisik sediaan salep dilakukan selama 12 hari (6 siklus), meliputi uji organoleptik, uji homogenitas, uji pH, uji daya lekat, uji daya sebar dan uji stabilitas. Hasil pengamatan organoleptik selama cycling test menunjukan adanya perubahan warna pada sediaan yaitu pada siklus ke 5 dan 6. Selain itu, dengan bertambahnya konsentrasi dinatrium EDTA berpengaruh terhadap pH. Semakin tinggi konsentrasi dinatrium EDTA maka semakin kecil pH dan berpengaruh pada stabilitas fisika sediaan. Hasil menunjukan bahwa sediaan yang stabil dan memenuhi syarat yaitu formula 3 dengan konsentrasi dinatrium EDTA 0,10 %.
Guava leaves (Psidium guajava L.) is one of the efficacious plants, because it contains secondary metabolites of saponins, tannins, flavonoids, and alkaloids; where these compounds have antibacterial properties. With the presence of antibacterial content in guava leaves, a preparation was made in the form of an antibacterial ointment by varying one of the ingredients as a stabilizer, namely disodium EDTA. The purpose of this study was to determine the effect of disodium EDTA concentration on the physical stability of the ethanol extract ointment of guava leaves (Psidium guajva L.). In this study, 3 formulas were prepared with variations in the concentration of disodium EDTA, namely F1 (0.05%); F2 (0.08%) and F3 (0.10%), respectively. Evaluation of the physical stability of the ointment was carried out for 12 days (6 cycles), including organoleptic tests, homogeneity tests, pH tests, adhesion tests, spreadability tests and stability tests. The results of organoleptic observations during the cycling test showed that there was a change in the color of the preparation in the 5th and 6th cycles. In addition, increasing the disodium EDTA concentration affected the pH, where the higher the disodium EDTA concentration, the lower the pH and affected the physical stability of the preparation. The results showed that the preparation that met the requirements for ointment stability was formula 3 with a concentration of 0.10% disodium EDTA.
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