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All Journal Journal of Chemistry Sciences and Education Indonesian Journal of Science and Education
Ine Pebriyanti
Institut Teknologi Sumatera
Biochemistry, Genetics & Molecular Biology Chemistry Materials Science & Nanotechnology Physics Other

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Ekstraksi, Karakterisasi, dan Klasifikasi Senyawa Aromatik Jahe (Zingiber Officinale) melalui Metode Enfleurasi Dan Maserasi Aluna Monalaika Izzati; Ine Pebriyanti
Journal of Chemistry Sciences and Education Vol 3 No 01 (2026): Journal of Chemistry Sciences and Education (JCSE)
Publisher : PT. Pubsains Nur Cendekia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69606/jcse.v3i01.451

Abstract

This study investigates the extraction, characterization, and aromatic classification of ginger (Zingiber officinale) using enfleurage and maceration techniques. Enfleurage was employed as a mild, non-thermal method to preserve thermolabile volatile compounds, while ethanolic maceration was used to obtain aromatic tincture. The resulting extracts were evaluated through organoleptic analysis, physicochemical characterization (pH and density), and aromatic note classification based on volatility and persistence. The results indicate that petrolatum-based enfleurage successfully captured volatile aromatic fractions with dominant top-note characteristics, whereas maceration produced a tincture with stable physicochemical properties and strong initial aroma intensity. These findings demonstrate that method selection significantly influences aroma profile, stability, and applicability in cosmetic and perfumery formulations.
The Impact of Incorporating Biochar on the Development of Goethite Nanoparticles Produced via Precipitation Method Iwan Syahjoko Saputra; Achmad Gus Fahmi; Rifka Noor Azizah; Rina Andriyani; Anjar Hermadi Saputro; Ine Pebriyanti; Aluna Monalaika Izzati
Indonesian Journal of Science and Education Vol. 10 No. 1 (2026): Indonesian Journal of Science and Education (In Press)
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijose.v10i1.2809

Abstract

This research explores a novel synthesis approach for goethite nanoparticles (Goe-NPs) due to the addition of biochar during goethite formation. This study investigated the effect of biochar addition on the Goe-NPs agitation process. Biochar was added on days 1, 7, 14, and 21 after reacting iron nitrate and base during agitation (30 days in 40 ℃). Based on the observation, the addition of biochar on day 14 (Goe-14d) has the smallest and most uniform particle size (±60 nm) compared to the addition of biochar on day 21 (Goe-21d) measuring about ±99 nm, and goethite synthesis without the addition of biochar (Goe-BLANK) measuring approximately >1000 nm. Functional group analysis using FTIR identifies all goethite produced from this synthesis method has an Fe-O6 octahedral lattice peak found at 642 cm-1 and Fe-O-H bending vibrations at 795 cm-1 and 889 cm-1 with varying intensity at each biochar addition time. The peak intensity of the Goe-NPs spectrum decreased when the growth of goethite particles was fully formed and agglomerated (>7 days of biochar addition). XRD analysis showed the crystal structure of Goe-NPs, with additional peaks indicating potential impurities from the formation of ferrihydrite because goethite was not fully formed. SEM images showed the effect of biochar addition on the unique particle size and morphology between Goe-NPs at biochar addition before day 7 and after day 7, indicating biochar can reduce agglomeration. This study demonstrates a promising new synthesis route for Goe-NPs using this biochar addition, with the potential to customise the size and type of goethite particles based on their growth time.
Co-Authors Achmad Gus Fahmi Aluna Monalaika Izzati Aluna Monalaika Izzati Anjar Hermadi Saputro Iwan Syahjoko Saputra Rifka Noor Azizah Rina Andriyani