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All Journal Dedikasi: Jurnal Pengabdian kepada Masyarakat Journal of Biobased Chemicals (JOBC)
Ditta Kharisma Yolanda Putri
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Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Social Sciences Other

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Penerapan Teknologi Tepat Guna Alat Ekstraksi Minyak Atsiri untuk Pengolahan Limbah Kulit Jeruk di Desa Umbulrejo Kecamatan Umbulsari Kabupaten Jember Zuhriah Mumtazah; Boy Arief Fachri; Ditta Kharisma Yolanda Putri; Istiqomah Rahmawati; Bekti Palupi; Tri Elok Setya Megasari; Dianavita Fatimah
Dedikasi:Jurnal Pengabdian kepada Masyarakat Vol 3, No 1 (2022): Jurnal Dedikasi
Publisher : Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31479/dedikasi.v3i1.212

Abstract

Perkebunan jeruk di Desa Umbulrejo, Kecamatan Umbulsari, Kabupaten Jember menimbulkan permasalahan lingkungan. Jeruk yang telah dipanen umumnya akan disortir terlebih dahulu. Jeruk yang tidak masuk ke dalam kriteria akan dibuang dan dibiarkan begitu saja menjadi limbah. Oleh karena itu, kegiatan ini bertujuan untuk menyadarkan masyarakat akan pengelolaan limbah jeruk yang benar. Limbah jeruk, khususnya pada kulit jeruk dapat dimanfaatkan menjadi minyak atsiri dan lilin aromaterapi. Limbah kulit jeruk diekstraksi untuk mendapatkan minyaknya menggunakan metode ekstraksi padat-cair. Diharapkan kedepannya seluruh masyarakat di Desa Umbulrejo dapat memanfaatkan limbah jeruk agar menjadi produk yang memiliki nilai ekonomis yang lebih tinggi. Hasil dari program ini adalah meningkatnya pengetahuan masyarakat tentang pemanfaatan limbah kulit jeruk menjadi minyak atsiri dan lilin aromaterapi
Microwave Assisted-Extraction of Essential Oil from Fresh Basil (Ocium basilicium L.) Leaves Ditta Kharisma Yolanda Putri; Atiqa Rahmawati
Journal of Biobased Chemicals Vol. 1 No. 1 (2020): Journal of Biobased Chemicals
Publisher : Program Studi Teknik Kimia Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (935.751 KB) | DOI: 10.19184/jobc.v1i1.105

Abstract

In this research, the extraction of essential oil from fresh basil leaves using solvent-free microwave extraction (SFME)and microwave hydrodistillation (MHD) method. Several parameters influence the extraction of basil oil using 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 SFME method more effective than the MHD method for extraction basil oil from fresh leaves based on time extraction and yield.
Microwave Assisted Hydrolysis Ulva sp. Using HCl for the Production of Bioethanol Raw Materials Bekti Palupi; Nadia Ayumna Fa’iqoh; Alifia Rahma Putri Neysella; Boy Arief Fachri; Ditta Kharisma Yolanda Putri; Lukman Nulhakim; Maulida Septiyana
Journal of Biobased Chemicals Vol. 2 No. 2 (2022): 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.v2i2.272

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 have the potential for bioethanol production as an alternative energy producer. The purpose of this study is to determine the potential of Ulva sp. as 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 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 dinitro salicylic 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.
Optimasi Uji Total fenolik Labu Siam (Sechium edule) Menggunakan Ultrasonic-Assisted Extraction dan Response Surface Methodology Relyando, Syahfa Adinda; Ayu Wulandari; Ditta Kharisma Yolanda Putri; Bekti Palupi; Istiqomah Rahmawati
Journal of Biobased Chemicals Vol. 3 No. 1 (2023): 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.v3i1.276

Abstract

Chayote (Sechium edule) is a plant from the Cucurbitaceae family that contains several vitamins such as vitamins A, B, and C, and is often used for medicinal purposes. Based on phytochemical analysis, chayote extract contains bioactive compounds in the form of phenolics. Phenolic compounds are secondary metabolites and are used as cosmetic and medicinal ingredients due to their ability to reduce oxidative stress. This research aims to determine the total phenolic content and antioxidant activity of chayote (Sechium edule) extract using UV-Vis spectrophotometry. 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, while antioxidant activity was determined using DPPH. The determination of chayote extraction parameters for total phenolic content was carried out using the Response Surface Methodology with a Box-Behnken type. The optimal conditions obtained for chayote extraction were 1.327 mg GAE/g sample for total phenolic content and 29.45% for antioxidant activity under the conditions of 20 minutes extraction time, 65% amplitude, and 1:10 solvent ratio.
Preparation of a hollow fiber membrane made of antifouling PVDF/Zeolit using the dip-coating technique Mumtazah, Zuhriah; Adinda Yufriza; Husna Wardati; Ditta Kharisma Yolanda Putri; Meta Fitri Rizkiana; Reva Edra Nugraha
Journal of Biobased Chemicals Vol. 3 No. 1 (2023): 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.v3i1.279

Abstract

The practical technique for membrane modification is dip coating. This study coats a PVDF hollow fiber membrane-based composite with a coating of zeolite. The composite is made of a polyvinylidene fluoride (PVDF) membrane. During water filtering, the separation capabilities and propensities of composite membranes for organic impurities were examined. 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. The results of this study show that the addition of Zeolite with a GA and H2SO4 layer can greatly improve the hydrophilicity, selectivity, and anti-organic fouling of the PVDF hollow fiber membrane.
Ekstraksi Minyak Atsiri pada Daun Jeruk Manis (Citrus Aurantium) dengan Menggunakan Metode Microwave Hydrodistilation (MHD) Putri Agustin, Mawardhi Nabilla; Andreyan Poerwo Negoro; Ditta Kharisma Yolanda Putri; Meta Fitri Rizkiana; Istiqomah Rahmawati
Journal of Biobased Chemicals Vol. 3 No. 2 (2023): 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.v3i2.435

Abstract

Penelitian ini bertujuan untuk memanfaatkan daun jeruk manis yang hanya merupakan limbah yang tidak memiliki nilai, dimana daun jeruk manis merupakan salah satu bahan yang memiliki kandungan minyak atsiri. Selain kulitnya, ternyata daun jeruk manis ini juga dapat diekstrak menggunakan metode Microwave Hydrodistillation (MHD). Penelitian ini menggunakan tiga variabel yaitu; rasio F/S yang digunakan 0,375 g/mL ; 0,5 g/mL ; 0,65 g/mL, daya 150 watt, 300 watt dan 450 watt, serta waktu 30,60, dan 90 menit. Metode ekstraksi dilakukan menggunakan bahan segar (fresh) dengan volume solvent sebanyak 200ml. Adapun pengujian yang dilakukan ialah uji GC-MS. Dari hasil metode uji dan tujuan penelitian ini adalah untuk mengetahui kadar limonen pada ekstraksi daun jeruk manis menggunakan metode MHD dengan variasi rasio, daya dan waktu. Hasil optimum minyak atsiri pada daya 300 W, waktu 90 menit dan rasio 0,625 dengan hasil yield 0,373%. Komponen terbesar yang dihasilkan pada ekstraksi daun jeruk metode MHD ialah Germacrene D 29,51%, Alpha-Copaene 18,47%, CIS-CAROPHYLNE 15,42%, 9-Eicosene (E) 8,58% dan Limonen 5,51%.
Extraction of Turmeric Leaves (Curcuma longa L.) as a Natural Preservative for Tuna Fish Using Ultrasound-Assisted Extraction (UAE) Method Salma, Isni Salma Salsabillah; Rossi Agnessi Pebriana; Bekti Palupi; Ditta Kharisma Yolanda Putri; Istiqomah Rahmawati
Journal of Biobased Chemicals Vol. 4 No. 1 (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.v4i1.822

Abstract

Turmeric leaves (Curcuma longa L.) contain phytochemical compounds that can be utilized as natural food preservatives or bioformalin due to its antibacterial properties. The extraction method used in this study is Ultrasound-Assisted Extraction (UAE), with the aim to determine the effect of variable sample-solvent ratio, time, and particle size on total flavonoid, tannin, and alkaloid compounds, as well as to determine the optimal shelf life of fresh tuna. This study used sample-solvent ratio variables of 1:10, 1:15, and 1:20; time variables of 10, 20, and 30 minutes; and particle size variables of 60, 80, and 100 mesh. The highest total flavonoid compound was obtained in the variable sample-solvent ratio of 1:20, particle size of 100 mesh, and time of 20 minutes at 98,076 mg/L. The highest total tannin compound was obtained in the variable sample-solvent ratio of 1:15, particle size of 60 mesh, and time of 10 minutes at 41,697 mg/L. The highest total alkaloid compound was obtained in the variable sample-solvent ratio of 1:10, particle size of 100 mesh, and time of 20 minutes at 10,092 mg/L. The optimum curing time for tuna is 36 hours at room temperature with variable sample-solvent ratio, time, and particle size of 1:20 g/mL, 20 minutes, and 100 mesh with 20% concentration. The running has the highest flavonoid compounds, so it can be concluded that flavonoid compounds have a major effect on the preservation process of tuna.
Co-Authors Adinda Yufriza Alifia Rahma Putri Neysella Andreyan Poerwo Negoro Atiqa Rahmawati AYU WULANDARI Bekti Palupi Boy Arief Fachri Dianavita Fatimah Husna Wardati Istiqomah Rahmawati Lukman Nulhakim Maulida Septiyana Meta Fitri Rizkiana Mumtazah, Zuhriah Nadia Ayumna Fa’iqoh Nugraha, Reva Edra Putri Agustin, Mawardhi Nabilla Relyando, Syahfa Adinda Rossi Agnessi Pebriana Salma, Isni Salma Salsabillah Tri Elok Setya Megasari Zuhriah Mumtazah