Optimasi Pembuatan Nanopartikel Ekstrak Bawang Dayak (Eleutherine bulbosa (Mill.) Urb.) Berdasarkan Konsentrasi Kitosan

Abstract

Dayak onion extract (Eleutherine bulbosa (Mill.) Urb.) is known to have strong antibacterial activity so it has the potential to be developed into a nanoparticle delivery system. Chitosan polymer has the advantage of delivering active substances because it has good stability, low toxicity, and the preparation method is quite simple. This research aims to determine the effect of variations in chitosan–tripolyphosphate (TPP) concentration on the size and polydispersity index of nanoparticles. Dayak onion extract was formulated in the form of nanoparticles using the ionic gelation method with varying concentrations of chitosan polymer: tripolyphosphate 0.1%, 0.2%, 0.3% and 0.4%. Test parameters include determining the size and polydispersity index of nanoparticles using a particle size analyzer. The results showed that F1, F2, F3, and F4 had particle sizes of 376.6 nm, 354.7 nm, 480.1 nm, 654.0 nm, respectively, and a polydispersity index of 1.666; 1,702; 0.949; and 1,585 with heterogeneous size distribution. Based on the results of research that has been carried out, it can be concluded that Dayak onion extract can be formulated in nanoparticle sizes with varying physical characteristics depending on the concentration of chitosan and tripolyphosphate used.