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All Journal VALENSI KOVALEN: Jurnal Riset Kimia Al-Kimia SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan KAIBON ABHINAYA : JURNAL PENGABDIAN MASYARAKAT Jurnal ABDINUS : Jurnal Pengabdian Nusantara ABDI MOESTOPO: Jurnal Pengabdian pada Masyarakat Sewagati
Dwi Juli Puspitasari
Jurusan Kimia FMIPA Universitas Tadulako
Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Biskuit Como Flakes Berbahan Dasar Blondo-VCO Fermentasi untuk Pencegahan Stunting di Desa Sidole Barat Puspitasari, Dwi Juli; Sardi, Bambang; Sumarni, Sumarni; Ardipa, Galang; Wasis, Masita Ramadhani
ABDI MOESTOPO: Jurnal Pengabdian Pada Masyarakat Vol 8, No 2 (2025): Juli 2025
Publisher : Universitas Prof. Dr. Moestopo (Beragama)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32509/abdimoestopo.v8i2.4609

Abstract

Stunting, dan pengetahuan yang masih rendah mengenai pemanfaatan kelapa merupakan masalah utama di Desa Sidole Barat padahal daerah tersebut merupakan penghasil kelapa.  Keadaan ini menjadi alasan utama pengabdian dilakukan di Desa Sidole Barat. Pengabdian dilaksanakan dalam 5 tahapan yaitu: Persiapan, Pelatihan, Penerapan teknologi, Pendampingan dan Keberlanjutan program. Kegiatan pengabdian diikuti oleh 19 peserta terdi dari ibu ibu PKK dan petani kelapa, Tahapan sosialisasi meliputi kegiatan koordinasia antara tim pengabdian dan tim pengabdian dengan mitra. Tahapan selanjutnya adalah pelatihan berupa demontrasi pembuatan VCO dan biscuit Como Flakes.Sebelumnya diberikan bantuan alat produksi. Penerapan teknologi berupa pembuatan VCO secara fermentasi anaerob dan pemanfaatan dalam pembuatan biscuit como flakes serta pemasaran menggunakan platform digital. Tahapan pendampingan berupa pelatihan dan pembimbingan hingga peserta dapat melalukan sendiri sepetrti pembuatan biscuit, pembuatan stiker kemasan dan pemasaran secara online menggunakan media sosial. Keberlanjutan program lebih focus pada pemanfaatan limbah ampas kelapa yang dihasilkan dengan membuat menjadi tepung sebagai bahan fortifikasi terigu dalam pembuatan biskuit. Berdasarkan hasil test yang dilakukan diperoleh hasil pengetahuan peserta mengani pemanfaatan kelapa sebagai bahan pembuatan VCO -blondo dan Biskuit bertambah dan peserta paus dengan kegiatan ini dan ingin kegiatan ini dilakukan berkesinambungan.
Modification & Characterization of Activated Carbon Impregnated with KCl, Na2S, and KI for Enhancing Mercury (Hg) Removal from Natural Gas Muala, Bahran; Sumarni, Ni Ketut; Puspitasari, Dwi Juli
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 2, November 2024
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i2.40876

Abstract

Modified activated carbon (MAC) has been synthesized and characterized to enhance mercury (Hg) removal from natural gas. MAC was modified by impregnating it into KCl, Na2S, and KI to introduce Cl-, S-, and I- elements. SEM-EDX, FTIR, and SAA were used to characterize the AC and MAC. The isotherm and adsorption capacity were studied using the mercury gas standard. The results of SEM-EDX analysis show that the impregnation method is proven to produce MAC containing elements Cl, S, and I with mass % of 2.78% Cl, 0.76% S, and 39.60% I. The surface area is 421.91 m2/g, the total pore volume is 0.386825 cc/g, and the average pore size is 1.83369 nm. Group functions are -OH, C=C, C=O, C-O, and vibrations at the wavelength number 617.81 cm-1, which the impregnation agent forms. The mechanism for absorbing mercury gas into MAC follows the Freundlich isotherm model, with a coefficient of determination (R2) of 0.996. The adsorption capacity on MAC increased 57 times compared to unmodified activated carbon (AC) from 5540.60 to 315730.64 ng/g, with an efficiency maximum of 100%. The MAC has been proven to enhance mercury adsorption from natural gas with an efficiency of 78.6%.
Pembuatan Kertas pH dari Bahan Alam (Bunga) Sebagai Alternatif Pengganti Indikator Sintetis Di MGMP Kimia Kabupaten Donggala Puspitasari, Dwi Juli; Sosidi, Husain; Prismawiryanti, Prismawiryanti
Jurnal ABDINUS : Jurnal Pengabdian Nusantara Vol 6 No 3 (2022): Volume 6 Nomor 3 Tahun 2022
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/ja.v6i3.16896

Abstract

The lack of learning resources, especially practicum infrastructure, causes practicum in schools to not be implemented. The subject of acid-base material which should be in an experiment cannot be applied due to limited indicators. The results of observations in the field showed that students could not distinguish between acidic and basic solutions because they did not get a lesson. Chemistry subject teachers in several high schools in Donggala Regency do not carry out practical work on acid-base materials because they never used natural materials such as flowers as pH paper. Therefore, it is necessary to increase the understanding of teachers regarding the concept of acids and bases and natural materials that can be used as natural indicators to replace synthetic indicators. This service activity was attended by 10 participants consisting of chemistry teachers who are members of the chemistry MGMP of Donggala Regency. Service activities are carried out by understanding the concept of acid-base and the use of natural materials as natural indicators also demonstrating and guidance on making pH paper from natural materials (flowers). This activity provides additional knowledge for teachers in the use of natural materials as a substitute for synthetic indicators in acid-base material practicum so that the quality of learning is expected to increase.
Produksi Konsentrat Protein dari Ampas Kelapa (Cocos nucifera L.) Menggunakan NaOH dan (NH4)2SO4 : Production of Protein Concentrate from Coconut Pulp (Cocos nucifera L.) using NaOH and (NH4)2SO4 Hasdinda, Hasdinda; Satrimafitrah, Pasjan; Bahri, Syaiful; Razak, Abd. Rahman; Puspitasari , Dwi Juli; Indriani; Amar, Aini Auliana
KOVALEN: Jurnal Riset Kimia Vol. 9 No. 1 (2023): April Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2023.v9.i1.16290

Abstract

Coconut pulp wasted from processed coconut oil has a protein content of up to 18.20%. The potential coconut pulp protein can be processed in protein concentrate which has many benefits. This research was conducted to determine the effect of NaOH and (NH4)2SO4 concentrations in isolating protein and producing protein concentrates that have the highest yield and protein content. Isolation of coconut pulp protein was carried out using NaOH at several concentrations, namely 0, 0.2, 0.4, 0.6, 0.8, and 1 M, while the protein concentrate was prepared using the salting out method with a saturation level of the ammonium sulfate salt of 55%, 60%, and 65%. Analysis of protein content was carried out using the Kjeldahl method. The use of NaOH 0.2 M and (NH4)2SO4 with a saturation level of 60% was the chosen treatment with crude protein content and yield of 75.63% and 33.83%, respectively.
Isotermal Adsorpsi Ion Tembaga (II) Menggunakan Arang Tongkol Jagung (Zea mays L.) Teraktivasi Kalium Permanganat: Isothermal Adsorption of Copper (II) Ions Using Charcoal from Corn Cobs (Zea mays L.) Activated by Potassium Permanganate Habiba, Lisma; Inda, Nov Irmawati; Prismawiryanti; Sosidi, Husain; Sumarni, Ni Ketut; Puspitasari , Dwi Juli; Mirzan, Moh.; Jusman
KOVALEN: Jurnal Riset Kimia Vol. 9 No. 1 (2023): April Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2023.v9.i1.16292

Abstract

Corn cobs which generally only become waste can be processed into activated carbon and used for the absorption of heavy metals, such as copper(II) ions. This study aims to determine the morphology of corn cobs charcoal after activation, determine the isothermal adsorption model of copper (II) metal ions on corncob-activated carbon, and then determine the adsorption capacity of copper (II) metal ions on corncob-activated carbon. The morphology of the corncob-activated charcoal obtained was analyzed using Scanning Electron Microscopy (SEM). Isothermal adsorption of copper (II) ions was carried out with various concentrations of copper (II) ions of 5, 10, 20, 50, and 100 ppm. The results of the analysis using SEM showed that the surface shape of the corncob-activated charcoal is regular and has pores with a pore diameter obtained in the range between 1.08-1.26 m and 1.38-1.59 m. The mechanism of adsorption of copper (II) ions by corncob-activated charcoal using KMnO4, following the Freundlich isothermal model with a value of R2 0.9993 with an adsorption capacity of 51 x 10-4 mmol/L. The utilization of activated carbon from corn cobs that are activated by potassium permanganate is very effective for adsorbing copper metal ion pollutants through an adsorption mechanism on the surface of activated carbon.
Penentuan Kadar Albumin Ikan Gabus (Channa striata) dengan Metode Biuret setelah Dikukus dan Dipepes: Determination of Albumin Content of Snakehead Fish (Channa striata) by Biuret Method after Steamed and Wrapped Naser, Inda Hastuti N; Bahri, Syaiful; Satrimafitrah, Pasjan; Razak, Abd. Rahman; Ruslan; Ridhay, Ahmad; Puspitasari, Dwi Juli; Khairuddin
KOVALEN: Jurnal Riset Kimia Vol. 9 No. 2 (2023): August Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2023.v9.i2.16391

Abstract

Snakehead fish (Channa striata) is a type of freshwater fish that contains high levels of protein albumin. The research was conducted to determine the albumin content in snakehead fish after the cooking process, both steamed and wrapped. The research was conducted using a completely randomized design with a factorial pattern, the first factor was the cooking method (steamed and wrapped) and the second was cooking time (10, 15, 20, and 20 minutes). Determination of protein albumin levels in snakehead fish after processing using the Biuret method. The steaming process for 15 minutes resulted in protein content in the snakehead fish of 0.76%, while the protein albumin that was lost was 19.28%. The wrapped method for 20 minutes has a remaining protein content of 0.59%, while the missing protein is 38.78%. The method of processing snakehead fish by steaming is better than the wrapping process.
Pemanfaatan Karbon Aktif Kulit Kacang Tanah untuk Menurunkan Kadar Ion logam Ca2+ dan Mg2+ dalam Air: Utilization Peanut Shell Activated Carbon to Reduce Levels of Ca2+ and Mg2+ in Water Yanti, Wilda; Sosidi, Husain; Indriani; Prismawiryanti; Puspitasari, Dwi Juli; Mirzan, Moh.; Abdul Rahim, Erwin; Irmawati Inda, Nov
KOVALEN: Jurnal Riset Kimia Vol. 9 No. 2 (2023): August Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2023.v9.i2.16397

Abstract

Peanut shell has a high cellulose content as a carbon source which can be used as a basic ingredient for making activated charcoal. Research on peanut shells used as activated charcoal aims to determine the effect of contact time and pH on reducing levels of metal ions Ca2+ and Mg2+ in water. The research was conducted using contact time variables (30, 60, 90, 120, and 150 minutes) and pH (4, 5, 6, 7, and 8). Measurement of adsorbed metal levels was determined by using an Atomic Absorption Spectrophotometer (AAS). The research results obtained showed that variations in contact time could reduce Ca2+ levels by 77.46% -84.89% and Mg2+ by 86.88%-88.91%. Adsorbents with variations in pH can reduce Ca2+ levels by 63.48%-88.74% and Mg2+ by 90.35%-94.49%. The best conditions for the absorption of Ca2+ and Mg2+ ions were a contact time of 60 minutes and pH 4. The adsorbent was applied to reduce Ca2+ and Mg2+ levels in water with different hardness levels. The results of the analysis of water samples from two different locations had Ca2+ levels of 94.180 mg/L and 210.20 mg/L, while Mg2+ levels were 13.536 mg/L and 17.420 mg/L. The percentages of Ca2+ adsorption for the two samples were 96.19% and 77.08%, and the percentages of Mg2+ adsorption for the two samples were 21.16% and 10.63%. Carbon from peanut shells activated with sodium acetate has the potential to be used to reduce hardness in water.
Peningkatan kompetensi kimia siswa MAN IC Kota Palu melalui pemanfaatan software Avogadro Firmansyah, Firmansyah; Puspitasari, Dwi Juli; Nurhaeni, Nurhaeni; Sumarni, Ni Ketut; Prismawiryanti, Prismawiryanti
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 10, No 1 (2026): February
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v10i1.36159

Abstract

AbstrakKegiatan pengabdian kepada masyarakat ini dilatarbelakangi oleh masih rendahnya pemahaman konseptual siswa dalam memvisualisasikan struktur dan geometri molekul pada pembelajaran kimia, yang umumnya bersifat abstrak dan sulit dipahami hanya melalui penjelasan konvensional. Untuk mengatasi permasalahan tersebut, kegiatan ini bertujuan meningkatkan pemahaman dan keterampilan siswa kelas XI Madrasah ‘Aliyah Negeri (MAN) Insan Cendekia Kota Palu melalui pemanfaatan perangkat lunak Avogadro sebagai media pembelajaran berbasis komputer. Mitra sasaran dalam kegiatan ini adalah 40 siswa/siswi kelas XI MAN IC Kota Palu pada tanggal 8 September 2025 yang memiliki minat tinggi terhadap pembelajaran kimia. Metode pelaksanaan mencakup tahapan pengenalan konsep dasar Avogadro, pelatihan penggunaan perangkat lunak, praktik langsung dalam membangun dan menganalisis struktur molekul tiga dimensi, sesi diskusi interaktif, serta evaluasi hasil belajar melalui pre-test dan post-test. Hasil kegiatan menunjukkan adanya peningkatan signifikan pada pemahaman konseptual siswa. Rata-rata nilai meningkat dari 60 menjadi 81,76, dengan peningkatan tertinggi pada aspek pemahaman bentuk molekul (dari 53,33% menjadi 91,67%) dan sudut ikatan (dari 46,67% menjadi 100%). Hasil survei kepuasan menunjukkan respons yang sangat positif, di mana 67,5% siswa menyatakan puas atau sangat puas terhadap kualitas materi, 62,5% puas atau sangat puas terhadap penyampaian narasumber, 70% puas atau sangat puas terhadap kemudahan pembelajaran kimia menggunakan Avogadro, serta 77,5% menyatakan puas atau sangat puas terhadap dukungan pihak sekolah dalam keberlanjutan program. Hasil wawancara dan observasi partisipatif juga menunjukkan meningkatnya keterlibatan aktif dan antusiasme siswa selama kegiatan berlangsung. Temuan ini menunjukkan bahwa pemanfaatan perangkat lunak Avogadro efektif dalam meningkatkan pemahaman konsep, keterampilan praktis, dan literasi digital siswa. Kata kunci: avogadro; kimia visual; pembelajaran berbasis komputer; peningkatan pemahaman konsep. AbstractThis community service activity was motivated by the still low level of students’ conceptual understanding in visualizing molecular structures and geometries in chemistry learning, which are generally abstract and difficult to comprehend through conventional explanations alone. To address this issue, the activity aimed to improve the understanding and skills of eleventh-grade students at Madrasah ‘Aliyah Negeri (MAN) Insan Cendekia Kota Palu through the use of Avogadro software as a computer-based learning medium. The target participants consisted of 40 eleventh-grade students of MAN IC Kota Palu, and the activity was conducted on September 8, 2025, involving students with a strong interest in chemistry learning. The implementation methods included the introduction of basic Avogadro concepts, software usage training, hands-on practice in constructing and analyzing three-dimensional molecular structures, interactive discussion sessions, and evaluation of learning outcomes through pre-tests and post-tests. The results of the activity indicated a significant improvement in students’ conceptual understanding. The average score increased from 60 to 81.76, with the highest improvement observed in molecular shape understanding (from 53.33% to 91.67%) and bond angle comprehension (from 46.67% to 100%). The satisfaction survey results showed a highly positive response, with 67.5% of students stating that they were satisfied or very satisfied with the quality of the materials, 62.5% satisfied or very satisfied with the delivery by the instructors, 70% satisfied or very satisfied with the ease of learning chemistry using Avogadro, and 77.5% satisfied or very satisfied with the school’s support for program sustainability. The results of interviews and participatory observations also revealed increased active engagement and enthusiasm among students throughout the activity. These findings indicate that the utilization of Avogadro software is effective in enhancing students’ conceptual understanding, practical skills, and digital literacy. Keywords: avogadro; visual chemistry; computer-based learning; conceptual understanding improvement.
Co-Authors Abd. Rahman Razak Abd. Rahman Razak Ahmad Ridhay Aini Auliana Amar Amiluddin, Muh. Rafiq Andi Saifah Andi Tenri Ajeng Ardipa, Galang Arlina Mayharty Andulaai Askhiatul Fitriah Asri Wulandari Bambang Sardi Diharnaini Diharnaini Erwin Abdul Rahim Firmansyah Firmansyah Frischa Sari Kencana Habiba, Lisma Hardi Ys. Hasdinda, Hasdinda Helni Febriani Husain Sosidi Indriani Indriani Indriani Indriani Irawati Saleh Irmawati Inda, Nov Ivone Venita Sarapun Kahiruddin Khairuddin Khairuddin Khairuddin - Khairuddin Khairuddin Khairunnisa Khairunnisa M. Yogi Riyantama Isjoni Maulana, Asad Miswan Moh. Mirzan Moh. Mirzan Muala, Bahran Muh.Ricky Arisandi M. Tahili Musafira Naser, Inda Hastuti N Nea, Sirah Diniati Ni Kadek Atmiyanti Ni Ketut Sumarni Nov Irmawati Inda Nurfitrah M Adam Nurhaeni Nurhaeni Nurhaeni Nurhaeni Pasjan Satrimafitrah Prismawiryanti Prismawiryanti Ruslan Ruslan Ruslan Siswahyudianto Sumarni Sumarni Sutomo Eka Putra SYAIFUL BAHRI Syaiful Bahri Syamsuddin Syamsuddin Ulfa Mustika Sari Wasis, Masita Ramadhani Wiranto Wengkau Yana Silvia Mauru Yanti, Wilda