Sintesis Nanopartikel Perak Menggunakan Capping Agent Madu Apis cerana dan Uji Aktivitas Antioksidan

Wahono, Navisa Salsabila (2025) Sintesis Nanopartikel Perak Menggunakan Capping Agent Madu Apis cerana dan Uji Aktivitas Antioksidan. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Nanopartikel perak (AgNPs) merupakan nanopartikel logam yang umum digunakan karena sifat fisis dan kimianya yang unggul, seperti konduktivitas listrik tinggi dan stabilitas termal yang baik. AgNPs juga memiliki aktivitas biologis, salah satunya sebagai agen antioksidan. Namun, mempertahankan ukuran partikel yang seragam dalam proses sintesis AgNPs bukanlah hal yang mudah. Oleh karena itu, penambahan capping agent diperlukan untuk mencegah terjadinya agregasi dan menjaga stabilitas nanopartikel. Madu Apis cerana berpotensi sebagai capping agent karena senyawa bioaktif yang dimilikinya. Penelitian ini bertujuan untuk mengetahui peran madu Apis cerana sebagai capping agent dalam sintesis AgNPs serta mengevaluasi aktivitas antioksidannya berdasarkan kondisi sintesis paling optimal dengan metode Response Surface Methodology (RSM)-Box Behnken Design (BBD). Proses sintesis AgNPs dilakukan dengan metode reduksi kimia menggunakan perak nitrat sebagai prekursor, natrium borohidrida sebagai agen pereduksi, dan madu Apis cerana sebagai capping agent. Parameter optimasi BBD yang digunakan yaitu waktu sonikasi (30; 60; dan 90 menit), suhu sonikasi (40; 60; dan 80℃), dan konsentrasi madu Apis cerana (5; 10; dan 15 ppm). Hasil pemodelan respons permukaan 3D RSM menunjukkan kondisi optimal tercapai pada waktu sonikasi 90 menit, suhu sonikasi 70℃, dan konsentrasi madu Apis cerana 5 ppm. AgNPs yang terbentuk menunjukkan puncak absorbansi maksimum pada panjang gelombang 410 nm, dengan ukuran partikel 15,18 nm dan morfologi sferis berdasarkan karakterisasi PSA dan FESEM. Keberadaan gugus fungsi senyawa aktif dalam madu Apis cerana pada permukaan AgNPs dikonfirmasi melalui karakterisasi FTIR. Uji aktivitas antioksidan dengan metode DPPH menghasilkan nilai IC50 sebesar 12,5947 ppm yang menandakan aktivitas antioksidan pada kategori sangat kuat. Temuan tersebut menunjukkan bahwa madu Apis cerana dapat digunakan sebagai capping agent alami untuk menghasilkan AgNPs stabil dan aktif secara biologis.
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Silver nanoparticles (AgNPs) are commonly used metal nanoparticles due to their superior physical and chemical properties, such as high electrical conductivity and good thermal stability. AgNPs also have biological activity, one of which is as an antioxidant agent. However, maintaining uniform particle size during the AgNPs synthesis process is not straightforward. Therefore, the addition of a capping agent is necessary to prevent aggregation and maintain nanoparticle stability. Apis cerana honey has potential as a capping agent due to its bioactive compounds. This study aims to investigate the role of Apis cerana honey as a capping agent in AgNP synthesis and to evaluate its antioxidant activity based on the most optimal synthesis conditions using the Response Surface Methodology (RSM)-Box Behnken Design (BBD) method. The AgNPs synthesis process was carried out using the chemical reduction method with silver nitrate as the precursor, sodium borohydride as the reducing agent, and Apis cerana honey as the capping agent. The BBD optimization parameters used were sonication time (30; 60; and 90 minutes), sonication temperature (40; 60; and 80°C), and Apis cerana honey concentration (5; 10; and 15 ppm). The results of the 3D RSM response surface modeling showed that the optimal conditions were achieved at a sonication time of 90 minutes, a sonication temperature of 70℃, and an Apis cerana honey concentration of 5 ppm. The AgNPs formed exhibited a maximum absorbance peak at a wavelength of 410 nm, with a particle size of 15.18 nm and a spherical morphology based on PSA and FESEM characterization. The presence of active compound functional groups in Apis cerana honey on the surface of AgNPs was confirmed through FTIR characterization. Antioxidant activity testing using the DPPH method yielded an IC50 value of 12.5947 ppm, indicating antioxidant activity in the very strong category. These findings suggest that Apis cerana honey can be used as a natural capping agent to produce stable and biologically active AgNPs.

Item Type: Thesis (Other)
Uncontrolled Keywords: Antioksidan, Madu Apis Cerana, Nanopartikel Perak, RSM Antioxidant, Apis Cerana Honey, Silver Nanoparticles, RSM.
Subjects: Q Science > QD Chemistry > QD75.2 Chemistry, Analytic
T Technology > TP Chemical technology > TP159.A5 Antioxidants
T Technology > TP Chemical technology > TP248 Nanogels. Nanoparticles.
Divisions: Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User: Navisa Salsabila Wahono
Date Deposited: 06 Aug 2025 07:43
Last Modified: 06 Aug 2025 07:43
URI: http://repository.its.ac.id/id/eprint/127811

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