TY  - GEN
CY  - UNIVERSITAS LAMPUNG
ID  - eprints88908
UR  - http://digilib.unila.ac.id/88908/
A1  - Risma , Kristina Uli Pasaribu
Y1  - 2025/06/05/
N2  - Background : Silver nanoparticles (AgNPs) demonstrate potent antibacterial
potential, and biosynthesis using plant extracts is gaining focus due to its
environmentally friendly nature.
Objective : This study aims to compare the antibacterial activity of silver
nanoparticle (AgNPs) extract formulations from cacao (Theobroma cacao L.) and
green tea (Camellia sinensis) leaves against Staphylococcus aureus bacteria.
Methods : The profile of secondary metabolite compounds can be observed through
phytochemical screening. Furthermore, to visualize the silver nanoparticle profile,
SEM was used, followed by measuring the highest generated wavelength absorption
using UV-Vis spectrophotometry, and antibacterial testing was conducted using the
disc diffusion method against Staphylococcus aureus bacteria.
Results : The biosynthesis of cacao leaf AgNPs (Theobroma cacao L.), green tea leaf
AgNPs (Camellia sinensis), and combination AgNPs resulted in inhibition zones of
8.00 mm; 13.33 mm; and 10.17 mm, respectively, against Staphylococcus aureus
bacteria.Conclusion: The largest inhibition zone diameter was produced by green tea leaf
AgNPs (Camellia sinensis) against Staphylococcus aureus bacteria.

Keywords: antibacterial, cacao leaf, green tea leaf, silver nanoparticles (AgNPs) 

Latar belakang : Nanopartikel perak (AgNPs) menunjukkan potensi antibakteri
yang kuat, dan biosintesis menggunakan ekstrak tumbuhan menjadi fokus karena
sifatnya yang ramah lingkungan. 
Tujuan : Penelitian ini bertujuan untuk membandingkan aktivitas antibakteri
formulasi ekstrak nanopartikel perak (AgNPs) dari daun kakao (Theobroma cacao L.)
dan teh hijau (Camellia sinensis) terhadap bakteri Staphylococcus aureus.
Metode : Profil senyawa metabolit sekunder dapat dilihat melalui skrining fitokimia,
kemudian untuk melihat gambaran profil nanopartikel perak dapat menggunakan
SEM yang kemudian diukur Panjang resapan gelombang tertinggi yang dihasilkan
menggunakan spetrofotometri UV-Vis dan dilakukan uji antibakteri dengan metode
difusi cakram terhadap bakteri Staphylococcus aureus.
Hasil : Biosintesis AgNPs daun kakao (Theobroma cacao L.), AgNPs daun teh
(Camellia sinensis), dan AgNPs kombinasi menghasilkan zona hambat 8,00 mm;
13,33 mm; 10,17 mm pada bakteri Staphylococcus aureus. Simpulan : Diameter zona hambat terbesar dihasilkan oleh AgNPs daun teh
(Camellia sinensis) pada bakteri Staphylococcus aureus.

Kata kunci : antibakteri, daun kakoa, daun teh, nanopartikel perak (AgNPs)
PB  - FAKULTAS KEDOKTERAN
TI  - Perbandingan Aktivitas Antibakteri Formulasi Ekstrak Nanopartikel Perak
(AgNPs) Daun Kakao (Theobroma cacao L.) dan Teh Hijau (Camellia sinesis) 
terhadap Staphylococcus aureus
AV  - restricted
ER  -