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All Journal BERKALA SAINSTEK The Journal of Pure and Applied Chemistry Research JMM (Jurnal Masyarakat Mandiri) Chemistry Indonesian Journal of Chemical Research CHEESA: Chemical Engineering Research Articles Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Jurnal Kartika Kimia Jurnal Teknologi Jurnal Pijar MIPA Sewagati Indonesian Journal of Science and Education
Helda Wika Amini
Brawijaya university
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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Pelatihan Pembuatan Pupuk Organik Cair dari Limbah Kulit Kopi di Desa Pakis Jember Amini, Helda Wika; Rizkiana, Meta Fitri; Palupi, Bekti; Hidayati, Nurul; Raharjo, Sonya Hakim; Nurani, Yukti; Aziz, Mohamad Naufal Nizaar; Saputri, Ocha; Permatasari, Intan; Fandora, Ardan Jauza; Adriansyah, Muhamad; Nurjannah, Lailia; Rachman, Darryl Akeyla; Firmansyah, Alex; Devara, Arighy Zahirah Faiqy; Ulfiani, Khoirun Nisya'
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 8 No 1 (2025): Community Empowerment through Higher Education Community Service Programs
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v8i1.583

Abstract

Indonesia is one of the largest coffee-producing countries in the world. Indonesia recorded a large coffee harvest capacity reaching 774.96 thousand tons in 2022. The coffee processing naturally results in coffee hull waste that continues to be produced in large quantities. About 40 to 48% of the coffee hull composition contained in a coffee cherry is often discarded during processing and is not optimally utilized. One sustainable solution that can be implemented is processing coffee hull waste into liquid organic fertilizer (POC) through fermentation with EM4. This community service program was implemented in Pakis Village, Panti District, Jember Regency, which has 441.40 hectares of coffee plantations with an annual production of around 1,200 tons of robusta coffee. The program includes bioreactor development, socialization, and training for the community regarding the processing of coffee hull waste into POC. The result is increased community knowledge and skills as well as economic benefits for coffee farmers in Pakis Village through improved soil productivity. The results of the activities showed that the clarity of the knowledge with community needs increased to 70%, public interest in POC activities increased to 85%, and resulted in public satisfaction of 95%.
Microwave-Assisted Deep Eutectic Solvent Extraction of Lipids from Ulva sp.: Optimization and Fatty Acid Profiling Rizkiana, Meta Fitri; Lestari, Afrila Tutut Dwijati; Sholeha, Irdatus; Palupi, Bekti; Putri, Ditta Kharisma Yolanda; Rahmawati, Istiqomah; Amini, Helda Wika; Fachri, Boy Arief
Jurnal Pijar Mipa Vol. 20 No. 5 (2025)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i5.9588

Abstract

Ulva sp. is a green alga commonly found in Indonesian waters. It contains approximately 60% carbohydrates, 10–47% protein, and 1–3% lipids. This study aimed to determine the optimum conditions for lipid extraction from Ulva sp. A pre-treatment step was carried out by adding a Deep Eutectic Solvent (DES) and distilled water. The DES used was a mixture of zinc chloride and urea in a 1:2 molar ratio. The sample was then mixed with a chloroform-methanol solvent (2:1 v/v) and subjected to Microwave-Assisted Extraction (MAE). The variables investigated in this study included microwave power (150, 300, and 450 W), extraction time (10, 15, and 20 min), and solvent volume (45, 60, and 75 mL). The organic phase obtained from the extraction process was separated and evaporated to determine the lipid yield. The highest yield, 15.8%, was achieved under conditions of 20 min extraction time, 75 mL solvent volume, and 300 W of power. GC-MS analysis of the highest-yield sample revealed the presence of fatty acids including palmitic acid, oleic acid, and palmitoleic acid. This optimized method supports future applications in biodiesel production and green extraction processes for algae-based bioresources.
The Optimization of Chlorophyll Extraction from Ulva Sp. with Ultrasound-Assisted Liquid Biphasic Systems Method Susilowati; Humaidi, Fakhri Arkaan; Fachri, Boy; Palupi, Bekti; Rizkiana, Meta Fitri; Rahmawati, Istiqomah; Amini, Helda Wika
Indonesian Journal of Science and Education Vol. 8 No. 1 (2024): Indonesian Journal of Science and Education
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijose.v8i1.1085

Abstract

Ulva sp. is a type of green algae that is easily found in the shallow seas of Indonesia and contains various bioactive compounds. Chlorophyll is a bioactive compound that functions as a natural dye, free radical scavenger, and antioxidant in the body. Chlorophyll extraction with conventional methods requires a relatively long time and large amount of solvent. In this research, chlorophyll extraction from Ulva sp. with the Ultrasound-Assisted Liquid Biphasic System (UALBS) method. Ulva sp. as much as 2.5 grams mixed in acetone solvent, added K2HPO4 solution, and carried out the sonification process in a dark room. The extraction process performs at a parameter range of 5-15 minutes, ratio 0.05-0.1 g/mL, and 60-100 mesh particle size. The extracted filtrate was added with petroleum ether and distilled water to form a biphasic condition. The extracted chlorophyll was analyzed with chromatography and spectrophotometry method. Antioxidant activity was analyzed using the DPPH method. The optimum result of Ulva sp. chlorophyll extraction at an extraction time of 10 minutes, the ratio of solids to solvent was 0.1, the particle size of 60 mesh produced a yield of 1.88% with chlorophyll a 20.13664%, chlorophyll b 21.58672% and total chlorophyll 41.71012%, and the percentage inhibition 45.32%.
Co-Authors Abdul Malik Karim Amrullah Adrian, Febri Adriansyah, Muhamad Afwal, Diza Raudhatul Anggraini, Ranita Anggi Annisa, Yasmin Aziz, Mohamad Naufal Nizaar Bekti Palupi Boy Arief Fachri Devara, Arighy Zahirah Faiqy Ditta Kharisma Yolanda Putri Dyah Ayu Savitri Elisah, Nor Fachri, Boy Fandora, Ardan Jauza Farwah, Zilma Aliyah Firmansyah, Alex Humaidi, Fakhri Arkaan Indrayani, Lilin Intan Permatasari Istiqomah Rahmawati Lestari, Afrila Tutut Dwijati Ma'rifah, Binti Ni'matul Maharani, Regita Gustiayu Pramisti Masruri Masruri Meta Fitri Rizkiana Muhammad Reza Muharja, Maktum Nugroho, Yeremia Prasetya Nurani, Yukti Nurjannah, Lailia Nurtsulutsiyah, Nurtsulutsiyah Nurul Hidayati Pradipta, Shima Nuril Prasetyani, Tiana Febrianti Eka Rachman, Darryl Akeyla Rahman, Agus Rizalluddin, Muhammad Rizki Fitria Darmayanti Saputri, Ocha Sa’roni, Achmad Septianti, Kiki Shabrina, Nadhilah Shofa, Ghaitsa Zhahira Sholeha, Irdatus Sholihah, Athaya Farras Siti Mariyah Ulfa Sonya Hakim Raharjo Susilowati Syarifah, Ratna Dewi Ulfiani, Khoirun Nisya' Wardani, Salza Belila Kusuma Wardhani, Maharani Tri Wenny Maulina, Wenny