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All Journal Jurnal Biologi Tropis Jurnal Teknik Industri Terintegrasi (JUTIN)
Primarista, Ni Putu Vidya
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Energy Engineering Immunology & microbiology Industrial & Manufacturing Engineering Mechanical Engineering

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The Effect of Sugar Variation and Fermentation Time on Hydrogen Peroxide Levels and Eco-Enzyme Antibacterial Activity Primarista, Ni Putu Vidya; Wali, Abdul Rohman; Syahwardini, Trisuciati
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i1.11178

Abstract

Eco-enzyme is a filtrate resulting from the fermentation of sugar, organic materials, and water, which is produced not only to reduce organic waste but also as a functional product. This study aims to examine the effects of sugar type and the eco-enzyme's fermentation duration on three key parameters: bacterial optical density, hydrogen peroxide concentration, and inhibition zone against Staphylococcus aureus and Escherichia coli. The bacterial optical density was determined from absorbance measured at 600 nm using a UV-Vis spectrophotometer, the hydrogen peroxide concentration was determined by permanganometric titration, and the inhibition zone of the eco-enzyme against Staphylococcus aureus and Escherichia coli was determined using the disc diffusion method. The results showed that the eco-enzyme fermented with molasses for one month had the highest bacterial optical density. Meanwhile, the highest hydrogen peroxide concentration was found in the eco-enzyme fermented with molasses for three months. In addition, the eco-enzyme fermented with molasses for three months exhibited the highest antibacterial activity against Staphylococcus aureus and Escherichia coli, with inhibition zones of 6.59 mm and 6.37 mm, respectively. Eco-enzymes fermented with granulated sugar, palm sugar, and molasses all showed antibacterial activity against Staphylococcus aureus and Escherichia coli. However, the highest antibacterial activity against both bacteria was observed in the eco-enzyme fermented with molasses for three months.
Artikel Review: Teknologi Zeolit untuk Penangkapan Karbon (Carbon Capture): Karakteristik, Modifikasi dan Tantangan Operasional Hasrul, Hasrul; Syahwardini, Trisuciati; Wali, Abdul Rahman; Purfaji, Purfaji; Wiranata, Arya; Primarista, Ni Putu Vidya
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 1 (2026): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i1.53291

Abstract

Zeolites are promising adsorbents for CO₂ capture due to their high surface area, thermal stability, and cost-effectiveness. Their performance can be enhanced through chemical modifications such as amine impregnation, cation exchange, and hydrophobic surface grafting, enabling improved selectivity and resistance to moisture. However, operational challenges remain, including water competition, regeneration energy demand, and cyclic stability under industrial conditions. Strategies like guard beds, hydrophobic zeolites, and hybrid systems are being developed to overcome these limitations. Zeolite-based adsorption offers a sustainable pathway for reducing CO₂ emissions and advancing low-carbon technologies.
Co-Authors Hasrul Hasrul, Hasrul Purfaji, Purfaji Syahwardini, Trisuciati Wali, Abdul Rahman Wali, Abdul Rohman Wiranata, Arya