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All Journal Jurnal Sosial dan Teknologi Hayyan Journal
Triana Febrianti
Universitas Muhammadiyah Bulukumba
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology

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The content of Compounds and Bioactivity of the Eucalyptus sp species Miftahul Jannah Abd Haris; Andi Nur Fitriani Abubakar; Syahdam Karneng; Iin Indriani; Herdie Idriawien Gusti; Surahmat; Triana Febrianti
Hayyan Journal Vol. 2 No. 3 (2025): October
Publisher : Education and Talent Development Center of Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/hayyan.v2i3.3580

Abstract

Eucalyptus sp. is one of the plant genera from the Myrtaceae family which is widely known for its diverse secondary metabolite content and high biological activity. This study aims to systematically examine the diversity of active compounds and potential bioactivity of various Eucalyptus species, especially in the leaves, bark, seeds, and essential oils. Various compounds such as 1,8-cineole, citronellal, flavonoids, and phenolic compounds have been shown to contribute to pharmacological activities such as antioxidants, antimicrobials, anti-inflammatory, immunomodulators, anticancer, as well as natural insecticides and repellents. The results of the review indicate that these activities have great relevance in the development of biopharmaceutical products, cosmetics, and other health applications. The diversity of compounds and broad pharmacological effects place Eucalyptus as a very potential source of natural materials to be developed sustainably.
Pengaruh Modifikasi Permukaan Karbon Aktif Sekam Padi Menggunakan HNO3 terhadap Kapasitansi Spesifik dengan Elektrolit HCl, KOH, dan KCl Nuritasari Azis; Triana Febrianti; Widi Aprilia Ta’bi
Jurnal Sosial Teknologi Vol. 6 No. 1 (2026): Jurnal Sosial dan Teknologi
Publisher : CV. Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/jurnalsostech.v6i1.32658

Abstract

Biomass-based activated carbon has potential as an electrode material in energy storage systems because it is renewable and environmentally friendly, but its performance is still dominated by the Electric Double Layer Capacitance (EDLC) mechanism. This study aims to examine the effect of surface modification of rice husk activated carbon using HNO3 on the specific capacitance of carbon paste electrodes in various types of electrolytes. Activated carbon was synthesized through the stages of carbonization, silica extraction, chemical activation using H3PO4, and surface modification using HNO3. Material characterization was carried out using X-Ray Fluorescence (XRF), Scanning Electron Microscope (SEM), Surface Area and Porosity with the Brunauer-Emmett-Teller (BET) method, Fourier Transform Infra-Red (FTIR), and Boehm titration. The electrochemical performance of the electrode was evaluated using the cyclic voltammetry method with HCl, KOH, and KCl electrolytes at a concentration of 0.5 M. FTIR and Boehm titration results showed an increase in the number of oxygen groups on the surface of activated carbon after modification. Electrochemical testing showed that the type of electrolyte affected the specific capacitance value, with KOH electrolyte producing the highest specific capacitance of 31.5094 mF/g on the modified activated carbon electrode (KAEM). This increase in capacitance was attributed to the contribution of the pseudocapacitance mechanism due to the interaction of oxygen functional groups on the surface of activated carbon with OH- ions, while in HCl and KCl electrolytes the charge storage mechanism was dominated by electric double layer capacitance.
Co-Authors Andi Nur Fitriani Abubakar Herdie Idriawien Gusti Iin Indriani Miftahul Jannah Abd Haris Nuritasari Azis Surahmat Syahdam Karneng Widi Aprilia Ta’bi