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All Journal Jurnal Teknologi Industri Pertanian Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan
PRAKOSO, Haryo Tejo
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering

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Synthesis of Chitosan Composite based on Black Soldier Fly (BSF) Exuviae with Kipahit Leaf Extract and its Inhibition Test against Xanthomonas Oryzae. Wahyuni, Sri; Fauziyah, Ridha; Aziz, Muhammad Abdul; Eris, Deden Dewantara; Prakoso, Haryo Tejo; siswanto, Siswanto; Priyono, Priyono
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol. 5 No. 2 (2021)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rbaet.2021.005.02.03

Abstract

HDB disease caused by the bacteria Xanthomonas oryzae pv.oryzae (Xoo) is an important disease in rice plants. Recently, many organic based antibacterial agents are being developed, one of which is chitosan. One of the potential raw materials for producing chitosan is Black Soldier Fly (BSF) exuviae. During the development, chitosan was formulated with other ingredients such as kipahit leaves (Tithonia diversifolia). The purpose of this study is to synthesize BSF-based chitosan, formulate BSF-based chitosan composites with kipahit leaf extract using 0.1% sodium tripolyphosphate and test the antibacterial activity against Xanthomonas oryzae composites. The process of optimizing the extraction of kipahit leaves was carried out with a variety of solvents (2% acetic acid, 96% ethanol and 20% DMSO). The antibacterial activity test was carried out by the disc diffusion method at a concentration of 0.1; 0.2; 0.4; 0.6; 0.8 and 1% (w / v). The results showed that the best kipahit leaf extraction was obtained using 96% ethanol as a solvent. 
SYNTHESIS OF RESIDUAL OIL FROM SPENT BLEACHING EARTH (SBE) INTO BIODIESEL USING MICROWAVE REACTOR Prakoso, Haryo Tejo; Mawardanti, Azzahra Salsabila Syifa; Maftuhah, Azizatul; Dimawarnita, Firda; Faramitha, Yora; Poerwadi, Bambang
Jurnal Teknologi Industri Pertanian Vol. 34 No. 2 (2024): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24961/j.tek.ind.pert.2024.34.2.185

Abstract

Spent bleaching earth (SBE) is a waste from the crude palm oil CPO refining process which contains high oil content, around 20-30%. There are several methods to reduce SBE oil content, one of which is the solvent extraction method. SBE residual oil can be utilized as a raw material for biodiesel. This research aims to determine the mass ratio of SBE and solvent, the optimal temperature for extracting residual oil from SBE, and the potential of residual oil from SBE to be used as biodiesel using a microwave reactor. Residual oil extraction was carried out at varying mass ratios of SBE and solvent (1:2, 1:4, and 1:6) and varying temperatures (26, 40, and 50°C). The treated residual oil was esterified and subjected to transesterification reaction with 15% methanol and 1% KOH for 10 minutes at 60°C using a microwave reactor. The optimal extraction result for residual oil was at a 1:4 ratio and 26°C with a yield of 19.12%. There is also an increase in surface area in deoiled-SBE. The conversion of residual oil from SBE into biodiesel yielded 33.53% with a conversion value of 45.28% and a FAME content of 92.97%. The characteristics of the produced biodiesel meet the Indonesian National Standard (SNI) for biodiesel with density of 0.8674 g/cm3 and viscosity of 5.69 mm2/s. Keywords: extraction, fatty acid, transesterification, yield
Co-Authors Bambang Poerwadi Dimawarnita, Firda Eris, Deden Dewantara Faramitha, Yora Fauziyah, Ridha Maftuhah, Azizatul Mawardanti, Azzahra Salsabila Syifa Priyono Priyono RR. Ella Evrita Hestiandari S Siswanto Sri Wahyuni