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All Journal International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis UNEJ e-Proceeding Warta Pengabdian CHEESA: Chemical Engineering Research Articles Jurnal Teknologi Dedikasi: Jurnal Pengabdian kepada Masyarakat Bulletin of Chemical Reaction Engineering & Catalysis
Bekti Palupi
Department Of Chemical Engineering, Faculty Of Engineering, University Of Jember, Jalan Kalimantan 37, 68121 Jember
Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Electrical & Electronics Engineering Energy Engineering Social Sciences Other

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Journal : CHEESA: Chemical Engineering Research Articles

 1 
Extraction of Basil Leaves Essential Oil using Microwave Assisted Hydrodistillation Method: Physical Characterization and Antibacterial Activity Ditta Kharisma Yolanda Putri; Salsabila Ananda Putri; Briantara Agung Nugraha; Boy Arief Fachri; Bekti Palupi
CHEESA: Chemical Engineering Research Articles Vol 6, No 1 (2023)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v6i1.14639.1-12

Abstract

Basil oil can be obtained from basil leaves by non-extraction methods, namely Microwave Assisted Hydrodistillation (MAHD). Therefore, this research aims to determine the yield percentage, essential oil composition by GC-MS, physical characteristics, and antibacterial activity of basil essential oil. The highest yield of 0.3076% was obtained at the optimum condition, which included a microwave power of 300 W, a mass-to-volume solvent ratio (F/S) of 0.75 g/mL, a raw material size of ± 1.75 cm, and an extraction time of 90 min. The results of the analysis of variance showed that all process parameters used had a significant effect on the yield obtained. Basil oil exhibited a larger inhibition zone against Escherichia coli bacteria (16.38 mm) which tended to be stronger than Staphylococcus aureus (5.95 mm) and was classified as moderate. The main components contained in the basil oil were E-Citral (46.79%) and Z-Citral (38.17%). The physical characteristic test showed that the basil oil was soluble in 96% ethanol after a ratio of 1:9, with 1 ml of basil oil compared to 9 ml of ethanol. The density of basil oil at 0.961 g/mL also complied with the standard value according to the Essential Oil Association (EOA) of Ocimum basilicum Essential Oil. These results showed revealed that the parameter analyzed using oil yields at operating conditions produced the most optimum yield value.
Optimization of Ulva sp. Decomposition using H2SO4 with Microwave-Assisted Hydrolysis Method as Feedstock of Bioethanol Bekti Palupi; Muhammad Rizalluddin; Kiki Septianti; Istiqomah Rahmawati; Boy Arief Fachri; Meta Fitri Rizkiana; Helda Wika Amini
CHEESA: Chemical Engineering Research Articles Vol 6, No 1 (2023)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v6i1.14682.13-25

Abstract

Bioethanol is a renewable energy used to reduce dependence on fossil fuels, which have negative impacts on the environment. Furthermore, Ulva sp. contains high levels of carbohydrates, making it potentially suitable as a raw material for bioethanol production. Therefore, this study aims to determine the optimal decomposition process using the microwave-assisted hydrolysis method with an acid solvent (H2SO4), by examining the effects of acid concentration, hydrolysis time, and microwave power. Optimization was carried out using several parameters such as hydrolysis time, microwave power, and the ratio of raw materials to solvents. The ANOVA test results showed that the hydrolysis variable parameter had a significant effect on the reducing sugar content obtained, evidenced by the R2 value of 0.9892. The highest reducing sugar content of 19.71 mg/mL was produced under the operating conditions of 15 min hydrolysis time, 450 W microwave power, and 0.065 g/mL ratio of raw material to solvents.
Co-Authors Ari Susanti Ari Susanti Atiqa Rahmawati Atiqa Rahmawati Atiqa Rahmawati Badril Azhar Bimo Bayu Aji Boy Arief Fachri Briantara Agung Nugraha Dini Rahmawaty Ditta Kharisma Yolanda Ditta Kharisma Yolanda Putri Ditta Kharisma Yolanda Putri Felix Arie Setiawan Firmansyah, Arfian Alwi Gregah Pangayoman Hartanto P Gregah Pangayoman Hartono Putro Habibatul Inayah Harti Arini Helda Wika Amini Istiqomah Rahmawati Kiki Septianti Mahfud Mahfud Meta Fitri Rizkiana Mizanurafi’ Ghifarhadi Prasiefa Mohammad Nor Muhammad Ilham Muhammad Reza Muhammad Rizalluddin Muharja, Maktum Nikita Meidi Nova Chintya Kurniawati Nur Karima Nurtsulutsiyah Nurtsulutsiyah Regita Gustiayu Pramisti Maharani Reswara Musyafa Rizki Fitria Darmayanti Sakai, Kenji Salsabila Ananda Putri Sanomoto, Kenji Tashiro, Yukihiro Wiwik Pratiwi