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All Journal Jurnal Vokasi Jurnal Teknologi Educalitra: English Education, Linguistics, and Literature Journal Sinergi International Journal of Islamic Studies Jurnal Riset, Inovasi, Teknologi & Terapan
Sami, Muhammad
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Religion Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Social Sciences

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Pengaruh Waktu Dan Suhu Ekstraksi Dan Karakteristik Pektin Dari Kulit Buah Coklat (Theobroma Cacao) Hadi, Teuku Luthfi; Sami, Muhammad
Jurnal Riset, Inovasi, Teknologi & Terapan Vol 3, No 2 (2025): Juni
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/ristera.v3i2.7448

Abstract

The chocolate fruit (Theobroma Cacao) that is considered to have economic value is the seed, while the skin is underutilized. Brown peel is a processing waste from chocolate beans. Pectin comes from the Greek word pectos which means to freeze or clump. Vangueli was the first to discover the existence of a substance that could form gel derived from fruits and succeeded in isolating it as a substance that could be dissolved in water. In this study, the extraction of brown skin pectin was carried out by extraction method using Microwave Assisted Extraction (MAE). This study aims to determine the number of yields produced, the influence of time and temperature on yields, moisture content, methoxyl content, equivalent weight and functional groups. The raw material for the source of pectin is the peel of the chocolate fruit by the solvent extraction method. The fixed variable used was the skin of a chocolate fruit weighing 20 grams, as a marinating agent used an HCl solution with a concentration of 0.05 N. In this study, two independent variables were used, namely the extraction temperature of 65°C and the extraction time of 55 minutes. From the results of the study, the best results were obtained in 35 minutes at a temperature of 85°C of 12.72% pectin yield with a moisture content of 9%. High methoxyl levels were obtained at a temperature of 65°C and a time of 45 minutes was 10.08%, an equivalent weight of 625 mg, this shows that pectin has data according to SNI.
The Catalytic Performance of Vanadium–Nickel Supported on Zeolite for the Conversion of Crude Palm Oil into Short-Chain Hydrocarbons Rahmahwati, Cut Aja; Salmyah, Salmyah; Sami, Muhammad; Sariadi, Sariadi
Jurnal Teknologi Vol 25, No 2 (2025): Agustus 2025
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v25i2.7030

Abstract

The increasing global demand for fossil fuels, alongside declining domestic oil production, has intensified interest in renewable energy sources. Among Indonesia's abundant biomass options, crude palm oil (CPO) is a promising candidate for biofuel production due to its high triglyceride content and chemical similarity to petroleum. This study explores the catalytic cracking of CPO using a vanadium–nickel catalyst supported on natural zeolite, aiming to evaluate its physicochemical properties and catalytic performance in converting CPO into short-chain hydrocarbons for potential use as biogasoline. The catalyst was synthesized via wet impregnation of natural zeolite with ammonium metavanadate and nickel nitrate hexahydrate, followed by calcination. Characterization using Thermogravimetric Analysis (TGA), X-Ray Diffraction (XRD), and Scanning Electron Microscopy (SEM) confirmed good thermal stability, crystallinity, and surface morphology. Catalytic cracking was performed at elevated temperatures under atmospheric pressure. The liquid products were analyzed using Gas Chromatography-Mass Spectrometry (GC-MS). The results showed that the catalyst successfully facilitated the breakdown of triglycerides, producing mainly medium-chain fatty acids. Pentadecanoic acid (C₁₅H₃₀O₂) was identified as the dominant compound, indicating partial cracking of CPO. However, the product composition still contained oxygenated species, suggesting incomplete deoxygenation. Consequently, the resulting mixture does not yet meet biogasoline specifications. These findings highlight the potential of vanadium–nickel/zeolite catalysts in biofuel conversion processes, while also emphasizing the need for further catalyst optimization or additional processing stages to achieve complete transformation into fuel-grade hydrocarbons.
Co-Authors Ansar, Mohammed Cut Aja Rahmawati Elfiana Elfiana, Elfiana Elfiana, E Elfiana, E. Hadi, Teuku Luthfi Halim Zaini, Halim MASTURA, DEWI Mochammad Imron Awalludin Nurraiyan, Nurraiyan Pardi Pardi, Pardi Pardi, P. Prihatin, Nanang Rahmahwati, Cut Aja Ridwan, Ridwan Rusna, Rusna Salmyah, Salmyah Sariadi Sariadi Teuku Rihayat Usman Usman Yusnar, Cut Zaimahwati, Zaimahwati