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All Journal UNEJ e-Proceeding SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan CHEESA: Chemical Engineering Research Articles Jurnal Teknologi Dedikasi: Jurnal Pengabdian kepada Masyarakat KARYA: Jurnal Pengabdian Kepada Masyarakat Jurnal Pijar MIPA Journal of Biobased Chemicals (JOBC) Sewagati Jurnal Teknik Kimia dan Lingkungan Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Hasil Pengabdian Kepada Masyarakat Universitas Jember
Ditta Kharisma Yolanda Putri
Department Of Chemical Engineering, Faculty Of Engineering, Universitas Jember, Jalan Kalimantan 37, Jember 68121, Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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PEMANFAATAN LIMBAH AMPAS TAHU DALAM PEMBUATAN TEPUNG BERSERAT PANGAN TINGGI DAN RENDAH LEMAK SEBAGAI ALTERNATIF BAHAN PANGAN FUNGSIONAL Ditta Kharisma Yolanda Putri; Hanggara Sudrajat; Ari Susanti; Susilowati; M. Wildan Ibnu Batuthoh
Jurnal Hasil Pengabdian kepada Masyarakat Universitas Jember Vol 1 No 1 (2022): Jurnal Hasil Pengabdian Kepada Masyarakat Universitas Jember
Publisher : LP2M Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jpmunej.v1i1.72

Abstract

Tofu is a source of vegetable protein that has high nutritional value for Indonesian Tofu, which is made from soybeans, produces waste from production, one of which is tofu dregs which cannot be stored for long and can pollute the environment. In general, the protein content in tofu dregs is still high, while until now its use is still relatively simple, namely only as animal feed. The content of tofu dregs which is still high in nutrition needs to be optimized for its use as an alternative functional food by processing it into tofu dregs flour, where in 100% tofu dregs flour contains 66.24% carbohydrates, 17.72% protein, 3.23% crude fiber, and 2.62% fat. However, the lack of knowledge about tofu dregs management, knowledge about nutrition and the benefits of tofu dregs, as well as the lack of innovation that can be applied from tofu dregs, causes most of the tofu manufacturing entrepreneurs to still consider the economic value of tofu dregs to be low. The solutions that have been provided include (1) Counseling on the nutritional content that is still present in tofu dregs (2) Socialization on methods that can be applied to process tofu dregs into flour and the benefits of tofu dregs flour. The result of this service activity is that partners get additional knowledge about the management of tofu dregs into high-fiber and low-fat food flour.
Kinetic Extraction of Moringa Oleifera Leaves using the Microwave Assisted Extraction (MAE) Method Rizky Pratama, Reinaldi; Ghina Shofiah Adibah Khoirunnisa; Ditta Kharisma Yolanda Putri; Helda Wika Amini; Boy Arief Fachri
Journal of Biobased Chemicals Vol. 4 No. 2 (2024): Journal of Biobased Chemicals
Publisher : Program Studi Teknik Kimia Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jobc.v4i2.1379

Abstract

Daun kelor (Moringa oleifera) adalah bagian dari tumbuhan yang memiliki bentuk seperti daun dengan berbagai manfaat kesehatan dan gizi yang tinggi, serta terdapat kandungan vitamin, mineral, protein, dan senyawa bioaktif, serta memiliki sifat antioksidan dan antiinflamasi. Penelitian ini bertujuan untuk mempelajari ekstrasi, mengetahui keberadaan kandungan tannin pada daun kelor dan mengetahui model kinetika ekstraksi pada ekstrak yield daun kelor meggunakan metode Microwave Assisted Extraction (MAE). Proses ekstraksi daun kelor dilakukan dengan menggunakan pelarut etanol 96% dan menggunakan metode Microwave Assisted Extraction (MAE) dapat membantu memaksimalkan rendemen ekstraksi. Proses ekstraksi dilakukan dengan variasi daya 150 watt, rasio bahan terhadap pelarut 1:15 b/v dan waktu ekstraksi 2, 4, 6, 8, dan 10 menit. Hasil penelitian menunjukkan nilai rendemen tertinggi didapatkan pada waktu ekstraksi di menit ke 10 yaitu 10,25%. Model kinetika ekstraksi yang sesuai untuk mengekstraksi senyawa tanin dari daun kelor adalah orde 2, dimana nilai R2 lebih tinggi dibandingkan orde 1 dan nilainya hampir mendekati 1.
Kinetics Study in Essential Oil Extraction from Basil Leaves by Microwave Assisted Hydrodistillation Putri, Ditta Kharisma Yolanda; Udroto, Firsta Retnaningtyas; Fatimah, Dianavita; Fachri, Boy Arief; Rahmawati, Istiqomah; Mumtazah, Zuhriah; Palupi, Bekti; Al Fajri, Maktum Muharja
Jurnal Teknik Kimia dan Lingkungan Vol. 9 No. 1 (2025): April 2025
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jtkl.v9i1.4930

Abstract

Essential oil is compounds that contained in plants and have many benefits. Basil is an aromatic plant that can produce essential oils. Essential oils can be extracted from basil leaves using Microwave Assisted Hydrodistillation (MAHD) method. To determine the efficiency of the MAHD method, it’s necessary to study the kinetics of the extraction method. It’s because kinetic studies can be used to identify the optimal point in the process where the highest efficiency is obtained, so the extraction process can be optimized. The aim of this research is to evaluate the suitable kinetic model for the basil leaf extraction process using the MAHD method. This extraction using 100 grams of basil leaves and 200mL aquadest, heated at various microwave power 150W, 300W, and 450W. The extractions were carried out for 70 minutes with 10 min intervals. The results showed that the largest oil yield was obtained when using 450W power, which was 0.190 grams. Based on the experimental data obtained, the most suitable kinetic model is second-order model. This can be analyzed from the highest R2 (0.9946 – 0.9999) and the lowest RMSE (0.0062 – 0.0349). Increasing the irradiation power will affect the extraction rate and parameter values of each kinetic model.
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.
Pembuatan biogas dari jerami padi dan kotoran sapi di Desa Sumber Jeruk Kecamatan Kalisat Ditta Kharisma Yolanda Putri; Boy Arief Fachri; Zuhriah Mumtazah; Istiqomah Rahmawati; Ansori Ansori; Ratri Sekaringgalih; Merymistika Yufrani Afred; Ocita Galuh Permatasari; Anak Agung Nabilla Azzahrah; Hilda Huril Ainia; Nayyara Aida Buana; Nirina Indi Naraismanti; Putri Ayu Salsabila; Gavinda Tsubutul Akmal; Muhammad Nabil Suryagama; Ilyas Arya Pratama; Dwi Intan Noer Aini
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 9, No 3 (2025): May
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v9i3.30268

Abstract

AbstrakKrisis energi akibat kelangkaan minyak mentah telah menyebabkan kenaikan harga bahan bakar minyak dan gas secara signifikan. Untuk menanggulangi dampak tersebut, pemerintah memberikan subsidi LPG kepada masyarakat berpenghasilan rendah. Namun, realisasinya masih kurang efektif karena tidak tepat sasaran, sehingga menyebabkan keterbatasan ketersediaan LPG bersubsidi. Di sisi lain, limbah biomassa seperti jerami padi dan kotoran sapi yang melimpah di wilayah pedesaan belum dimanfaatkan secara optimal, padahal memiliki potensi besar sebagai sumber energi terbarukan.Kegiatan pengabdian ini dilakukan di Desa Sumber Jeruk, Kabupaten Jember, dengan tujuan memberikan solusi pemanfaatan limbah biomassa menjadi energi alternatif berupa biogas, sekaligus sebagai upaya mengurangi ketergantungan terhadap LPG. Metode yang digunakan dalam produksi biogas adalah fermentasi fed-batch dengan penambahan EM4 sebagai aktivator mikroorganisme.Hasil kegiatan menunjukkan bahwa kombinasi jerami padi dan kotoran sapi mampu menghasilkan biogas yang dapat dimanfaatkan sebagai bahan bakar alternatif. Selain membantu mengurangi limbah organik, inovasi ini juga berkontribusi dalam mendukung ketahanan energi di tingkat rumah tangga. Pengolahan limbah biomassa menjadi biogas merupakan solusi tepat guna yang ramah lingkungan dan berkelanjutan dalam menghadapi keterbatasan energi fosil. Kata kunci: biogas; LPG; limbah jerami padi; kotoran sapi; fermentasi fed-batch. AbstractThe energy crisis due to the scarcity of crude oil has caused a significant increase in the price of fuel oil and gas. To overcome this impact, the government provides LPG subsidies to people with low incomes. However, its realization is still ineffective because it is not on target, resulting in limited availability of subsidized LPG. On the other hand, biomass waste such as rice straw and cow dung which are abundant in rural areas have not been optimally utilized, even though they have great potential as renewable energy sources. This community service activity was carried out in Sumber Jeruk Village, Jember Regency, with the aim of providing a solution for utilizing biomass waste into alternative energy in the form of biogas, as well as an effort to reduce dependence on LPG. The method used in biogas production is fed-batch fermentation with the addition of EM4 as a microorganism activator. The results of the activity show that the combination of rice straw and cow dung is able to produce biogas that can be used as an alternative fuel. In addition to helping reduce organic waste, this innovation also contributes to supporting energy security at the household level. Processing biomass waste into biogas is an appropriate solution that is environmentally friendly and sustainable in overcoming the shortage of fossil fuel energy. Keywords: biogas; LPG; rice straw waste; cow manure; fed-batch fermentation
Microwave Assisted-Extraction of Essential Oil from Fresh Basil (Ocium basilicium L.) Leaves Ditta Kharisma Yolanda Putri; Atiqa Rahmawati
JOBC Vol. 1 No. 1 (2020): Journal of Biobased Chemicals
Publisher : University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

In this research, the extraction of essential oil from fresh basil leaves using solvent-free microwave extraction (SFME) and microwave hydrodistillation (MHD) methods. Several parameters influence the extraction of basil oil using the SFME method: microwave power, the ratio between the mass of raw material with a volume of distiller (F/D), material size, and length of extraction time. Besides, the components contained in basil oil and changes in oil gland conditions in basil leaves before and after being extracted were also evaluated. The optimum condition was obtained as follows: microwave power of 380 W, the ratio between the mass of raw material with a volume of distiller (F/D) of 0.1 g/mL, raw material size of intact (± 3 cm), with an extraction time of 60 min. Moreover, SFME has a shorter extraction time to produce yields than MHD methods. GC-MS analyzed the composition of basil oil, and there were 49 identified components. This study shows that the SFME method is more effective than the MHD method for the extraction of basil oil from fresh leaves based on time extraction and yield.
Essential Oil Extraction from Citronella (Cymbopogon nardus L.) Using Solvent-Free Microwave Extraction Method (SFME) Siti Fatimah; Ditta Kharisma Yolanda Putri
JOBC Vol. 2 No. 1 (2022): Journal of Biobased Chemicals
Publisher : University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Indonesia is one of the countries that produces essential oils, a commodity that can generate foreign exchange. Therefore, essential oils receive special attention from the Indonesian government. Indonesia generates 40-50 types of plants that produce essential oils and are traded worldwide. Extraction using a microwave, with the basic mechanism of microwave heating, involves stirring polar molecules or ions that oscillate due to the influence of electric and magnetic fields, called dipolar polarization. From the results of physical analysis, citronella essential oil obtained using the Solvent FreeMicrowave Extraction (SFME) method has met the standards and quality of citronella oil based on SNI 06-3953-1995, according to the parameters of color, specific gravity, and solubility in water. 80% ethanol shows citronella oil of good quality. The results of GC-MS (Gas Chromatography-Mass Spectrometry) analysis on the extraction of citronella essential oil using the Solvent Free Microwave Extraction (SFME) method obtained two components, namely citronella and geraniol, with citronellal percentages of 8.64% and 7.53%. Optimal operating conditions for extracting essential oils from citronella raw materials using the Solvent Free Microwave Extraction (SFME) method.
Microwave-Assisted Hydrolysis of Ulva sp. Using HCl to Produce Bioethanol Raw Materials Bekti Palupi; Nadia Ayumna Fa’iqoh; Alifia Rahma Putri Neysella; Boy Arief Fachri; Ditta Kharisma Yolanda Putri; Lukman Nulhakim; Maulida Septiyana
JOBC Vol. 2 No. 2 (2022): Journal of Biobased Chemicals
Publisher : University of Jember

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Abstract

The challenges faced by the Indonesian state are increasing greenhouse gases, climate change, and depleting fossil fuel reserves. This requires the exploration of alternative energy that is environmentally friendly and sustainable. Algae biomass, especially Ulva sp., is one of the resources that has the potential for bioethanol production as an alternative energy source. The purpose of this study is to determine the potential of Ulva sp. as a raw material for bioethanol and to determine the effect of particle size, solvent concentration, and power on the hydrolysis process. This study used Ulva sp. as a raw material. hydrolyzed with HCl solvent using the microwave-assisted hydrolysis method. Hydrolysis with HCl concentrations of 0.1 N, 1 N, 2 N, variations of microwave power 150 watts, 300 watts, 450 watts, and particle sizes of 60 mesh, 80 mesh, and 100 mesh. Measurement of reducing sugar levels was carried out using the dinitrosalicylic acid (DNS) method. The results showed that the best conditions for hydrolysis were when the HCl concentration was 0.1 N, the microwave power was 450 watts, and the particle size was 80 mesh, which resulted in a reducing sugar content of 20.751 mg/mL.
Optimization of Total Phenolic Content Analysis of Chayote (Sechium edule) using Ultrasonic-Assisted Extraction and Response Surface Methodology Syahfa Adinda Relyando; Ayu Wulandari; Ditta Kharisma Yolanda Putri; Bekti Palupi; Istiqomah Rahmawati
JOBC Vol. 3 No. 1 (2023): Journal of Biobased Chemicals
Publisher : University of Jember

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Abstract

Chayote (Sechium edule) is a plant from the Cucurbitaceae family that contains several vitamins, such as A, B, and C, and is often used for medicinal purposes. Based on phytochemical analysis, chayote extract contains bioactive compounds like phenolics. Phenolic compounds are secondary metabolites used as cosmetic and medicinal ingredients due to their ability to reduce oxidative stress. This research uses UV-Vis spectrophotometry to determine the chayote extract's total phenolic content and antioxidant activity. Chayote extract was obtained using the Ultrasonic Assisted-Extraction (UAE) method with 96% ethanol solvent. The extraction variables used were time (15, 20, and 25 minutes), amplitude (45, 65, and 85%), and solvent ratio (1:5, 1:10, and 1:15). The determination of total phenolic content was based on the Folin-Ciocalteau method. At the same time, antioxidant activity was determined using DPPH. Determining chayote extraction parameters for total phenolic content using the Response Surface Methodology with a Box-Behnken type. The optimal conditions for chayote extraction were 1.327 mg GAE/g sample for total phenolic content and 29.45% for antioxidant activity under 20 minutes of extraction time, 65% amplitude, and a 1:10 solvent ratio.
Preparation of a Hollow Fiber Membrane Made of Antifouling PVDF/Zeolite using the Dip-Coating Technique Adinda Yufriza; Husna Wardati; Zuhriah Mumtazah; Reva Edra Nugraha; Ditta Kharisma Yolanda Putri; Meta Fitri Rizkiana
JOBC Vol. 3 No. 1 (2023): Journal of Biobased Chemicals
Publisher : University of Jember

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Abstract

The practical technique for membrane modification is dip coating. This study coats a PVDF hollow fiber membrane-based composite with a zeolite coating. The composite is made of a polyvinylidene fluoride (PVDF) membrane. The separation capabilities and propensities of composite membranes for organic impurities were examined during water filtering. Fourier-transform infrared spectroscopy analysis of the findings demonstrated that the Zeolite coating was successfully deposited on the PVDF membrane. The flux recovery ratio increases from 69% to 80% while the relative flux drop decreases from 63% to 50%. A composite PVDF membrane dip-coating of Zeolite with a GA and H2SO4 ratio of 1:2 is needed to remove about 75% of humic compounds from effluent. This study's results show that adding Zeolite with a GA and H2SO4 layer can significantly improve the PVDF hollow fiber membrane's hydrophilicity, selectivity, and anti-organic fouling.
Co-Authors Achri Isnan Khamil Adiana, Bernanda Delta Adinda Yufriza ahmad rizal Al Fajri, Maktum Muharja Alifia Rahma Putri Neysella Amalia, Rima Anak Agung Nabilla Azzahrah Andini, Angger Andreyan Poerwo Negoro Ansori Ansori Ari Susanti Ari Susanti Atiqa Rahmawati Atiqa Rahmawati Atiqa Rahmawati Atiqa Rahmawati Audi Nur Amartya AYU WULANDARI Azizi, Hosshofil Azhar Badril Azhar Bekti Palupi Bimo Bayu Aji Boy Arief Fachri Diana Permata Nur Mifdatun Jannah Dianavita Fatimah Dwi Intan Noer Aini Fathuri, Danu Fatimah, Dianavita Fatma, Lailatul Fauziah, Nabilah Lu'aili Felix Arie Setiawan Firmansyah, Muhammad Alfian Gavinda Tsubutul Akmal Ghina Shofiah Adibah Khoirunnisa Hanggara Sudrajat Helda Wika Amini Helda Wika Amini Hilda Huril Ainia Husna Wardati Ilyas Arya Pratama Intan Hardiatama Irawan, Dwi Agustin Isni Salma Salsabillah Istiqomah Rahmawati Istiqomah Rahmawati Lailatul Krisna Abdullah Lestari, Afrila Tutut Dwijati Lukman Nulhakim M. Wildan Ibnu Batuthoh Mahfud Mahfud Maktum Muharja Maktum Muharja Maktum Muharja Maulida Septiyana Mawardhi Nabilla Putri Agustin Merymistika Yufrani Afred Meta Fitri Rizkiana Mizanurafi’ Ghifarhadi Prasiefa Muhammad Nabil Suryagama Muharja, Maktum Nadia Ayumna Fa’iqoh Nayyara Aida Buana Nirina Indi Naraismanti Nova Chintya Kurniawati Nugraha, Briantara Agung Nur Karima Ocita Galuh Permatasari Putri Agustin, Mawardhi Nabilla Putri Ayu Salsabila Putri, Salsabila Ananda Rahmat, Muhammad Rahmatullah, Moh. Fajar Ratri Sekaringgalih Reinaldi Rizky Pratama Relyando, Syahfa Adinda Reva Edra Nugraha Riavinola Viyoni Pramudiska Rizki Fitria Darmayanti Rizki Fitria Darmayanti Rizki Fitria Darmayanti Rizky Pratama, Reinaldi Rojabi, Rofi Syifa'ur Rossi Agnessi Pebriana Safira Nur Oktavia Salma, Isni Salma Salsabillah Salsabilah, Almas Saputra, Ilham Sari, Difka Augustina Diana Sholeha, Irdatus Siregar, Monika Jelita Siska Nuri Fadilah SITI FATIMAH Siti Fatimah Soleh, Achmad Rodi Susilowati Syahfa Adinda Relyando Syaifullah, Rangga Yudha Tri Elok Setya Megasari Udroto, Firsta Retnaningtyas Viqhi Aswie Widjatma, Ridho Rahadina Zuhriah Mumtazah