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All Journal Jurnal Surya Teknika Journal of Applied Materials and Technology Jurnal Sains Materi Indonesia
Aziz, Yelmida
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Response surface methodology for glucose conversion by applying deep eutectic solvent (DES) as green solvent Romaito, Rizki Falah; Wulandari, Dini; Utami, Syelvia Putri; Aziz, Yelmida
Journal of Applied Materials and Technology Vol. 6 No. 1 (2024): September 2024
Publisher : Faculty of Engineering Universitas Riau and Applied Materials and Technology Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/Jamt.6.1.14-20

Abstract

Glucose is a monosaccharide-type carbohydrate that serves as a fundamental building block of biomass. In this research, glucose was hydrolyzed using a Deep Eutectic Solvent (DES) as the solvent and AlCl3  as the catalyst. The effects of temperature and catalyst concentration were investigated as key variables in the reaction. The glucose conversion results were tested using the UV-Vis spectrophotometer. The yields of glucose conversion were analyzed using the Response Surface Methodology (RSM) with Design Expert Version 13 software. The results of RSM analysis show that glucose conversion increases linearly with rising reaction temperature. The effect of catalyst concentration indicates that glucose conversion decreases at higher catalyst levels. The reaction temperature and AlCl3 catalyst concentration that can be recommended for optimum conditions from the Design Expert data processing results are 112.869 C and 1.913% with a predicted conversion value of 93.844%.
Hydrolysate as an alternative feedstock for furfural production Utami, Syelvia Putri; Rezki, Yoanni Marsha; Ermalinda, Vina; Komalasari; Aziz, Yelmida
Jurnal Sains Materi Indonesia Vol. 25 No. 2 (2024): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

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Abstract

Furfural has emerged as a value-added chemical product which generated from hemicellulose-base biomass, in the context of hardwood it called as biorefining. Several methods have been developed to produce furfural using both hydrothermal and catalytic processes. In this study, hydrolysate is used as feedstock for generating furfural by using diluted sulfuric acid and aluminium chloride. Temperature and reaction time has been considered as the valuable variable. Hydrolysate was charged with the acid-catalyst for around 90 min at certain temperature. The product analyzed by using fourier transform index refractory and excess bromine method. At this time, the highest yield of furfural for non-catalyst process was achieved at 120 oC for 90 min. Diluted acid solution by hydrochloric acid and AlCl3 1% managed to increase furfural production from hydrolysate in the mild temperature.
Teknologi Modifikasi Fisik Heat Moisture Treatment (HMT) pada Tepung Beras dan Tepung Sorgum: Kajian Sistematis Parameter Proses, Transformasi Struktur Granula Pati dan Prospek Skalabilitas Industri Puji Hastuti, Ririn; Alel, Ariya Eka; Alfarisi, Cory Dian; Legawati, Lisa; Aziz, Yelmida
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11604

Abstract

Heat Moisture Treatment (HMT) is a clean-label, residue-free physical starch modification technique that serves as a strategic solution for food diversification, aiming to reduce national reliance on imported wheat, which reached USD 2.2 billion in 2022. This systematic review of 45 selected scientific publications, out of 65 initially screened articles, evaluates the impact of HMT on rice and sorghum flour characteristics. Synthesized results indicate that HMT consistently increases gelatinization temperature (To up by 3 - 8°C), reduces peak viscosity (15 - 30%), and boosts resistant starch content from 3 - 5% to 8 - 15%. In sorghum flour, the interaction between starch and non-starch components, particularly kafirin proteins, significantly modifies the HMT response compared to pure sorghum starch. This study highlights critical research gaps, specifically regarding the need for optimal HMT parameters tailored to Indonesian local varieties and the necessity of comprehensive techno-economic analysis to facilitate industrial-scale implementation.
Co-Authors Alfarisi, Cory Dian Dini Wulandari Eka Alel, Ariya Ermalinda, Vina Komalasari Lisa Legawati Puji Hastuti, Ririn Rezki, Yoanni Marsha Romaito, Rizki Falah Syelvia Putri Utami