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All Journal Jurnal Bahan Alam Terbarukan Chemistry Indonesian Journal of Chemical Research INTEK: Jurnal Penelitian
Jeanne Dewi Damayanti
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Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Engineering Environmental Science Materials Science & Nanotechnology

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Analysis of Metoxyl and Galacturonate Contents from Pectin of Banana Peel Waste Combined with Sappan Wood Asfar, Andi Muhamad Iqbal Akbar; Mukhsen, Muh Iqbal; Asfar, Andi Muhammad Irfan Taufan; Budianto, Eko; Damayanti, Jeanne Dewi
Jurnal Bahan Alam Terbarukan Vol 13, No 1 (2024): June 2024 [Nationally Accredited Sinta 2]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v13i1.48146

Abstract

The production of banana plants (Musaceaea sp.) ranks first in agricultural output in Indonesia, but this is not balanced by the processing of waste from banana peels, which is a large amount. Therefore, an attempt is made to use banana peel waste as raw material for making pectin. Pectin is used as a functional component in the food industry because of its ability to form thin gels and stabilize proteins. Pectin is also used as a filler in the paper and textile industries, and as a thickener in the rubber industry. This research aims to determine the effect of extraction time and temperature on the quality of pectin from Kepok banana peels. The method used is extraction through Ultrasonic Assisted Solvent Extraction (UASE) in 40 kHz. Banana peels that had been dried and ground into powder were extracted with 0.1 N HCl at temperatures of 70 oC, 80 oC and 90 oC. The variables used in this extraction are variations in extraction time, namely 60 minutes and 80 minutes. The extracted solution is filtered and thickened to half the volume of the original filtrate by heating, then the pectin is thickened using acid ethanol. The pectin precipitate was washed using 96% alcohol until it was free of chloride and the precipitate was separated using a vacuum and then dried in an oven then to analysis of pectin using methoxyl and galacturonate as method to determine pectin quality form banana peel waste. The research results showed that the pectin quality was optimum at a temperature of 90 oC for 80 minutes with a methoxyl content of 4.12% (low methoxyl) and a galacturonic acid content of 79.96%.
Isolation of Lycopene Component from Tamarillo (Solanum betaceum) Damayanti, Jeanne Dewi; Azmilia, Ririn; Ainun, Zul; Amin R., Nur; Nurdin, M. Ilham
Indonesian Journal of Chemical Research Vol 9 No 2 (2021): Edition for September 2021
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2021.9-dam

Abstract

Lycopene is a red pigment found in tamarillo with its function as an antioxidant that protects body cells from the negative effects of free radicals so that they do not trigger diseases, especially cancer and premature aging. This study was intended to improve the quality of tamarillo by isolating lycopene from tamarillo through an extraction process with chloroform as a solvent by maceration for 3 days at room temperature. The lycopene extract obtained was dissolved by means of a rotary evaporator at 40 oC under vacuum pressure and oven temperature at 60 oC. The lycopene obtained was analyzed by Gas Chromatography-Mass Spectrometry and the crystal structure of lycopene was characterized by Fourier Transform Infra-Red Spectroscopy. GCMS results showed that 0.21 g of lycopene was successfully isolated from 100 g of dried red tamarillo fruit powder. Functional group analysis using FT-IR at a wavelength of 978.23 cm-1 showed the R-CH=CH-R group; the -CH3- group of 1371.43 cm-1; the 1460.16 cm-1 indicates the bending vibration of -CH2-; the C=C chain of 1656.91 and 1745.64 cm-1; and the C-H of 2856.67 and 2926.11 cm-1 of the lycopene chain.
Processing of Coal into Coke with the Pyrolysis Method Nurdin, M Ilham; Damayanti, Jeanne Dewi
INTEK: Jurnal Penelitian Vol 10 No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v10i1.4269

Abstract

Utilization of coal as a direct fuel can cause environmental problems such as solid waste in the form of fly ash (flyash). This study aims to process coal into coke using the pyrolysis method in the hope of increasing the quality and efficiency of coal that is safe for the environment. This research was conducted in 3 stages. The first stage was carried out by crushing coal, sieving coal, testing proximate and ultimate coal, and analyzing the calorific value of coal. The second stage is carried out by preparing coal, pyrolysis of coal using a set of pyrolysis tools. Pyrolysis was operated at ± 400oC using a stainless reactor with a reactor volume capacity of 16 liters. Pyrolysis is carried out until no more liquid smoke is produced. The third stage was carried out by crushing the coke product, testing the proximate and ultimate coke (moisture content, ash content, volatile matter, fixed carbon, total sulfur), and analyzing the calorific value of the coke. The results showed that the quality of coal could be improved by processing it into coke using the pyrolysis method as evidenced by a decrease in water content, a decrease in volatile matter, an increase in fixed carbon, and an increase in calorific value
Co-Authors Ainun, Zul Amin R., Nur Asfar, A.M.Irfan Taufan Asfar, Andi Muhamad Iqbal Akbar Azmilia, Ririn Eko Budianto Mukhsen, Muh Iqbal Nurdin, M Ilham Nurdin, M. Ilham