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All Journal Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Analit: Analytical And Environmental Chemistry
Khansa, Shefia Dhiya
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Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science

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Effect of Adding Basil Leaf Extract (Ocimum basilicum) on Reducing Ag+ Ions to Ag0 by Colorimetry: Pengaruh Penambahan Ekstrak Daun Kemangi (Ocimum basilicum) Terhadap Reduktor Ion Ag+ menjadi Ag0 secara Kolorimetri Ambarita, Petrus Alvin Peter Ambarita; Nurhayati, Veni Putri; Rani, Fella Anindya; Putri, Tia Azzahra; Khansa, Shefia Dhiya; Gultom, Rifka; Rorensya, Chika Ari Dinar; Saputra, Iwan Syahjoko
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol. 8 No. 2 (2024)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rbaet.2024.008.02.04

Abstract

Nanotechnology has become a significant focus of research in efforts to address various challenges across multiple fields, including the synthesis of metal nanoparticles using natural bioreductors. This study explores the use of basil leaves (Ocimum basilicum) as a natural bioreductor for the synthesis of silver nanoparticles (Ag). The extract from basil leaves is rich in flavonoids, which serve as reducing agents in the green synthesis process of silver nanoparticles. The research methods include the preparation of basil leaves, extraction of simplicia, phytochemical analysis, and testing the bioreduction of Ag+ ions. The results indicate that the addition of basil leaf extract effectively reduces Ag+ ions to Ag⁰, marked by a color change in the solution to yellow-green within 60 minutes. The uniqueness of this study lies in utilizing basil leaves as an environmentally friendly bioreductor in the synthesis of silver nanoparticles. These findings have broad potential applications in catalysis, sensing technologies, and cosmetics.
SPECTROSCOPIC INSIGHTS AND PHYSICOCHEMICAL PROPERTIES OF DEEP EUTECTIC SOLVENTS FORMED FROM CHOLINE CHLORIDE AND ORGANIC HYDROGEN BOND DONORS Indah Puspita Sari; Octaviani, Eti Artiningsih; Khansa, Shefia Dhiya; Fadillah, Ganjar
Analit : Analytical and Environmental Chemistry Vol. 9, No. 02 October (2024) Analit : Analytical and Environmental Chemistry
Publisher : Jurusan Kimia FMIPA Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/analit.v9i02.202

Abstract

This study investigates the physicochemical properties and molecular insights of Deep Eutectic Solvents (DES) formed with choline chloride as the hydrogen bond acceptor (HBA) and various organic hydrogen bond donors (HBDs), such as citric acid, glycerol, and glycolic acid. DES were assessed for bioactive compound extraction using Fourier Transform Infrared (FTIR) spectroscopy to analyze hydrogen bonding interactions and by measuring viscosity, density, and water content. Results showed viscosity ranging from 100 to 300 mPa-s and density from 1.05 to 1.45 g/cm ³, depending on the specific HBD. DES formed with glycerol and sorbitol exhibited higher viscosity due to stronger hydrogen bonding, while DES with lactic acid and glycolic acid showed lower viscosity, enhancing fluidity. FTIR spectra revealed shifts in the O—H and C=O stretching bands, indicating complex hydrogen bonding networks. These findings highlight the potential of DES to optimize bioactive compound extraction and their application in the cosmetics industry.  
Co-Authors Ambarita, Petrus Alvin Peter Ambarita Eti Artiningsih Octaviani Ganjar Fadillah, Ganjar Gultom, Rifka Indah Puspita Sari Nurhayati, Veni Putri Putri, Tia Azzahra Rani, Fella Anindya Rorensya, Chika Ari Dinar Syahjoko Saputra, Iwan