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All Journal EKSAKTA: Journal of Sciences and Data Analysis Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Jurnal Bio-Geo Material Dan Energi Jurnal Sains dan Teknologi Jurnal Redoks : Jurnal Pendidikan Kimia dan Ilmu Kimia Jurna Beta Kimia Indonesian Journal of Science and Pharmacy Jurnal Bakti Nusantara Jurnal Polimesin Nexus
Hasibuan, Adelia Yesya Putri
Program Studi Teknik Rekayasa Kimia Industri, Teknik Mesin, Politeknik Negeri Medan
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PENGEMBANGAN KIT PEMBELAJARAN DARI LIMBAH SEKAM PADI PADA MATERI BENTUK MOLEKUL KELAS X SMA Adelia Yesya Putri Hasibuan; Iis Siti Jahro
Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Vol 2, No 1 (2020): APRIL 2020
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (214.731 KB) | DOI: 10.24114/jipk.v2i1.16633

Abstract

Learning media has a very important role because it can increase motivation, improve understanding and retention of learning. But the reality in school learning media is often overlooked for reasons of diffuclty finding the right media and limited time to make it yourself. To overcome the nothingness of learning media on molecular shape material, learning media from rice husk waste are developed. This study aims: (1)To know the feasibility of KIT learning media which used in learning activities. (2)To know student learning outcomes by using KIT learning media is higher than KKM. (3)To know student learning activities by using KIT learning media. This type of research is development of ADDIE research model carried out in class XI MIA 2 SMA Swasta Budisatrya Medan. The results of the research are: (1)KIT Learning on molecular shape material has been developed is feasible for use and is in accordance with Ministry of Education and Culture standards with a percentage of 96.87%. (2)Student learning outcomes that use KIT learning media on molecular shape material are higher than KKM. (3) Student learning activities using KIT learning media on molecular shape materials reach the criteria of Good with an average value of 90.
Upaya Peningkatan Literasi Bahan Tambahan Pangan dalam Jajanan Kemasan melalui Sosialisasi Interaktif Hasibuan, Adelia Yesya Putri; Moneteringtyas, Prisca Caesa; Tarigan, Ayu Syufiatun Br; Rahmat, Nahzim
Jurnal Bakti Nusantara Vol. 2 No. 3 (2025): Jurnal Bakti Nusantara
Publisher : Pustaka Media Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63763/jbn.v2i3.92

Abstract

Rendahnya kesadaran masyarakat terhadap bahan tambahan pangan dan zat kimia dalam jajanan kemasan dapat menimbulkan risiko kesehatan, khususnya di kalangan anak-anak dan orang tua di wilayah pedesaan. Program pengabdian kepada masyarakat ini bertujuan untuk meningkatkan literasi kimia pangan melalui kegiatan sosialisasi edukatif yang interaktif. Kegiatan ini dilaksanakan di Desa Bagan Serdang, Kecamatan Pantai Labu, Kabupaten Deli Serdang, Provinsi Sumatera Utara. Dengan menggunakan pendekatan riset tindakan, dilakukan tes awal dan tes akhir untuk mengevaluasi efektivitas intervensi. Hasil evaluasi menunjukkan adanya peningkatan signifikan dalam tingkat pengetahuan peserta, di mana hampir seluruh peserta memperoleh skor tertinggi pada tes akhir. Tingkat pemahaman tinggi dapat dilihat pada tes akhir yang mencapai 100% yaitu terdapat pada soal nomor 1, 2, 4, 5, 7, dan 9, sedangkan yang tidak mencapai 100%, hanya terdapat pada soal nomor 3 (86,70%), nomor 6 (73,33%), nomor 8 (80%), dan nomor 10 (93,30%). Sosialisasi interaktif telah berhasil meningkatkan pemahaman mitra tentang bahan tambahan pangan dalam jajanan kemasan.
Eksplorasi Nanokristal Selulosa dari Sumber Ramah Lingkungan untuk Inovasi Berkelanjutan Ayu Syufiatun Br Tarigan; Adelia Yesya Putri Hasibuan
Nexus Sains dan Teknologi Vol. 1 No. 1 (2025): Nexus: Jurnal Sains dan Teknologi (Edisi Mei)
Publisher : Politeknik Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51510/nst.v1i1.2358

Abstract

Nanokristal selulosa (NCC) adalah bahan alami yang semakin banyak diteliti karena memiliki kekuatan material yang baik, tahan panas, dan aman bagi lingkungan. Bahan ini berasal dari sumber yang dapat diperbarui, seperti limbah tumbuhan dan biomassa, sehingga dapat menjadi alternatif ramah lingkungan untuk berbagai industri. Review artikel ini membahas tentang metode isolasi NCC yang terdiri dari metode kimia, fisik/mekanik, dan biologis. Metode biologis merupakan metode yang paling baik jika dibandingkan dengan metode fisika/kimia karena memiliki keunggulan utama dalam hal keberlanjutan dan ramah lingkungan, karena tidak menghasilkan limbah beracun. Selain itu, artikel review ini juga membahas potensi nanokristal selulosa dalam berbagai aplikasi, seperti farmasi, tekstil, dan material komposit. Dengan terus berkembangnya inovasi di bidang ini, NCC berpotensi menjadi material yang dapat diaplikasikan dalam berbagai bidang secara berkelanjutan. Tujuan dari review ini adalah menjadi acuan bagi peneliti untuk dapat mengembangkan aplikasi nanokristal selulosa di berbagai bidang.
Modification of Durian Peel-Based Activated Carbon with Silver Nanoparticles for Enhanced Antibacterial Properties: A Literature Review Pratiwi, Pina Budiarti; Tarigan, Ayu Syufiatun Br; Hasibuan, Adelia Yesya Putri; Yanti, Elsa Novri
Indonesian Journal of Science and Pharmacy Vol. 3 No. 2 (2025): Indonesian Journal of Science and Pharmacy
Publisher : Pustaka Media Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63763/ijsp.v3i2.138

Abstract

Durian (Durio zibethinus) peel, an abundant agricultural waste in Southeast Asia, represents a sustainable lignocellulosic precursor for producing activated carbon (AC) with high surface area and porous structure. However, pristine durian peel-derived AC exhibits limited intrinsic antibacterial activity, primarily relying on physical adsorption. Silver nanoparticles (AgNPs) are well-known broad-spectrum antibacterial agents that disrupt bacterial membranes, generate reactive oxygen species (ROS), and interfere with cellular processes. Immobilization of AgNPs onto AC is expected to create a synergistic composite that combines adsorptive capacity with potent bactericidal effects. This literature review systematically examines the synthesis and characterization of activated carbon from durian peel, green synthesis routes of AgNPs using durian peel extract or pectin as reducing and stabilizing agents, and the potential of AgNP-modified durian peel AC for enhanced antibacterial performance. Key findings indicate that chemical activation (KOH or acid-based) yields AC with surface areas ranging from 257 to 666 m²/g. Pectin extracted from durian peel enables eco-friendly synthesis of stable, spherical AgNPs (core size ≈13.5 nm, zeta potential ≈ –50 mV) with minimum inhibitory concentrations (MIC) of 61.8 ppm against both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus. Comparative analysis reveals that while pristine durian peel AC shows only moderate bacterial capture, AgNP integration significantly improves bactericidal efficacy through combined adsorption-bactericidal mechanisms. Potential applications include water disinfection, antimicrobial filters, and biomedical materials. Challenges such as silver leaching, scalability, and long-term stability are discussed. This review highlights the emerging potential of AgNP-modified durian peel activated carbon as a low-cost, multifunctional material for addressing bacterial contamination while promoting waste valorization. Future research should focus on direct composite synthesis, comprehensive antibiofilm testing, and real-matrix performance evaluation.
Penguatan Potensi Lokal melalui Sosialisasi Inovasi Produk Dodol Salak di Desa Narigunung Satu, Kecamatan Tiganderket, Kabupaten Karo, Sumatera Utara Siti Mahmudha; Inten Pangestika; Pina Budiarti Pratiwi; Sulwiyatul Kamariyah Sani; adelia Yesya Putri Hasibuan
Jurnal Bakti Nusantara Vol. 3 No. 3 (2026): Jurnal Bakti Nusantara
Publisher : Pustaka Media Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63763/jutira.v3i3.122

Abstract

Desa Narigunung Satu, Kecamatan Tiganderket, Kabupaten Karo, memiliki potensi besar dalam sektor pertanian, khususnya pada komoditas buah salak yang produksinya meningkat signifikan dalam beberapa tahun terakhir. Namun, potensi tersebut belum dimanfaatkan secara optimal karena masyarakat masih menjual buah salak dalam bentuk segar dengan nilai ekonomi rendah dan masa simpan singkat. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan pengetahuan dan keterampilan kelompok ibu-ibu PKK Desa Narigunung Satu dalam mengolah buah salak menjadi produk bernilai tambah, yaitu dodol salak, sebagai strategi penguatan ekonomi keluarga berbasis potensi lokal. Metode kegiatan dilakukan melalui sosialisasi, demonstrasi, serta evaluasi pengetahuan peserta menggunakan pre-test dan post-test. Hasil kegiatan menunjukkan adanya peningkatan signifikan pada pemahaman peserta terhadap proses pengolahan, pengemasan, dan pemasaran produk. Peserta juga menunjukkan motivasi tinggi untuk mengembangkan usaha kecil berbasis olahan salak. Dengan demikian, kegiatan ini berhasil menjembatani kesenjangan antara potensi pertanian lokal dan kemampuan masyarakat dalam menciptakan inovasi produk, sekaligus mendorong kemandirian ekonomi desa yang berkelanjutan.
Pemberdayaan Masyarakat Desa Narigunung I melalui Edukasi Aman Gunakan Plastik dan Pemahaman Risiko Kesehatan Nahzim Rahmat; Ayu Syufiatun Br Tarigan; Prisca Caesa Moneteringtyas; Adelia Yesya Putri Hasibuan; Siti Mahmudha
Jurnal Bakti Nusantara Vol. 3 No. 3 (2026): Jurnal Bakti Nusantara
Publisher : Pustaka Media Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63763/jutira.v3i3.124

Abstract

Plastik merupakan bahan yang sangat umum digunakan dalam kehidupan sehari-hari karena sifatnya yang ringan, kuat, dan ekonomis. Namun, penggunaan plastik yang tidak sesuai dengan standar keamanan, terutama penggunaan ulang kemasan plastik, dapat menyebabkan paparan senyawa berbahaya seperti Bisfenol-A (BPA) dan ftalat yang berdampak negatif terhadap kesehatan manusia. Kegiatan pengabdian kepada masyarakat ini dilaksanakan di Desa Narigunung I, Kecamatan Tiganderket, Kabupaten Karo, dengan tujuan meningkatkan pemahaman masyarakat tentang identifikasi jenis plastik, arti kode daur ulang (1–7), serta bahaya penggunaan plastik berulang bagi kesehatan dan lingkungan. Metode kegiatan meliputi survei awal, edukasi interaktif melalui ceramah dan demonstrasi, serta evaluasi dengan pre-test dan post-test terhadap 15 peserta. Hasil kegiatan menunjukkan peningkatan signifikan pada tingkat pengetahuan peserta, dengan rata-rata nilai pre-test sebesar 39,3 dan post-test sebesar 86,7. Peserta menjadi lebih mampu mengenali kode plastik, membedakan jenis yang aman digunakan ulang, dan memahami risiko kesehatan akibat paparan bahan kimia berbahaya. Kegiatan ini terbukti efektif dalam meningkatkan literasi masyarakat mengenai penggunaan plastik yang aman serta mendorong perilaku ramah lingkungan.
PENGARUH PEMALSUAN SUSU DENGAN AIR TERHADAP KOMPOSISI SUSU Pina Budiarti Pratiwi; Najma Aurellia Rahmadhani; Adelia Yesya Putri Hasibuan; Ayu Syufiatun Br Tarigan; Mira Fatmawati
JURNAL REDOKS : JURNAL PENDIDIKAN KIMIA DAN ILMU KIMIA Vol 8 No 2 (2025): Jurnal Redoks : Jurnal Pendidikan Kimia dan Ilmu Kimia
Publisher : Program Studi Pendidikan Kimia STKIP Bima

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33627/re.v8i2.3532

Abstract

Susu merupakan sumber gizi penting yang rentan terhadap praktik pemalsuan, salah satunya melalui penambahan air untuk meningkatkan volume. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan air terhadap perubahan komposisi susu sapi murni menggunakan alat Lactoscan Milk Analyzer. Susu murni diperoleh dari sapi perah jenis Peranakan Friesian Holstein di Kabupaten Malang, kemudian ditambahkan air dengan konsentrasi 1%, 5%, 10%, dan 15%. Parameter yang diuji meliputi kadar lemak, protein, dan densitas, dianalisis menggunakan repeated measures ANOVA. Hasil menunjukkan bahwa penambahan air secara signifikan menurunkan kadar lemak, protein, dan densitas (p < 0,001). Kadar lemak menurun dari 5,85% menjadi 4,70%, protein dari 3,21% menjadi 2,68%, dan densitas dari 24,25 menjadi 20,24 seiring peningkatan konsentrasi air. Penurunan ini mencerminkan berkurangnya kualitas nutrisi dan fisik susu. Temuan ini menegaskan pentingnya deteksi dini terhadap praktik pemalsuan untuk menjaga mutu, nilai gizi, dan keamanan susu. Penggunaan teknologi seperti Lactoscan Milk Analyzer terbukti efektif dalam mendeteksi perubahan komposisi secara cepat dan akurat.
Optimisation of biolubricant synthesis from castor–maggot oil mixture via two-stage transesterification using response surface methodology Teuku Mukhriza; Adelia Yesya Putri Hasibuan; Erna Juwita; Husni Husin; Arridina Susan Silitonga
Jurnal Polimesin Vol 24, No 1 (2026): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i1.8376

Abstract

This study investigates the optimisation and characterisation of a biolubricant produced from a castor–maggot oil mixture via two-stage transesterification. Response surface methodology using a Box–Behnken design was employed to optimise the oil volume ratio, catalyst concentration, and reaction time. The optimum conditions were a castor oil–maggot oil ratio of 50% (v/v), a catalyst concentration of 1% (w/w), and a reaction time of 2 h, resulting in a biolubricant yield of 71.43%. Ethylene vinyl acetate and ethyl-cellulose were added to enhance stability and performance. The biolubricant exhibited a viscosity index of 101.88, kinematic viscosity at 40°C of 54.57 cSt, and a flash point of 235°C, complying with ISO VG 68 and SNI 7069.9:2016 standards. These performance characteristics demonstrate favourable viscosity–temperature behaviour, adequate thermal safety, and suitability for industrial lubrication systems. The integration of mixed vegetable–insect oil feedstocks with Response Surface Methodology (RSM)–Box–Behnken optimisation, together with the incorporation of performance-enhancing additives, resulted in a biodegradable, non-toxic, and environmentally friendly biolubricant that meets standard requirements and shows strong potential as a sustainable alternative to petroleum-based lubricants for mechanical applications.
XRD Characterization and Structural Insights of Activated Carbon-ZnO Composite for Potential Photocatalytic Applications Devi Lestari; Imas Masriah; Adelia Yesya Putri Hasibuan; Pina Budiarti Pratiwi
Jurnal Beta Kimia Vol 5 No 2 (2025): Volume 5 Issue 2, November 2025
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jbk.v5i2.25811

Abstract

This study presents a structural characterization of an activated carbon-ZnO (AC/ZnO) composite synthesized via a simple sol-gel route using activated carbon derived from oil palm empty fruit bunches (OPEFB), introducing a sustainable biomass based carbon source as a functional photocatalytic support. X-ray diffraction (XRD) analysis revealed sharp diffraction peaks corresponding to the wurtzite ZnO phase, together with a broad amorphous carbon halo, confirming the successful incorporation of crystalline ZnO within the carbon matrix. Microstructural parameters, including crystallite size, lattice strain, and dislocation density, indicate nanoscale structural ordering accompanied by beneficial defect sites that promote charge trapping. Structural interpretation was further validated through Rietveld refinement, which confirmed a single-phase ZnO structure with good fitting quality, demonstrating the structural stability and compatibility of ZnO within the carbon framework. Photocatalytic evaluation using methylene blue showed a higher removal efficiency under natural sunlight (95%) compared to dark adsorption (85%), evidencing a synergistic adsorption-photocatalysis mechanism. The novelty of this work lies in integrating low temperature sol–gel synthesis, waste derived activated carbon, and XRD based microstrain and refinement analyses to establish a clear structure–function relationship in AC/ZnO composites. These findings highlight the practical potential of this material as a low cost, scalable, and solar responsive photocatalyst for sustainable wastewater treatment applications, particularly in resource limited and tropical regions.
FTIR Analysis of ZnO-Functionalized Activated Carbon Derived from Oil Palm Empty Fruit Bunches for Potential Photocatalytic Applications Lestari, Devi; Masriah, Imas; Hasibuan, Adelia Yesya Putri; Pratiwi, Pina Budiarti
Jurnal Bio-Geo Material Dan Energi Vol. 6 No. 1 (2026): Journal of Bio-Geo Material and Energy (BiGME), February 2026
Publisher : PUI BiGME Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/j-bigme.v6i1.49493

Abstract

This study investigates the surface chemical characteristics of ZnO-functionalized activated carbon (AC) derived from oil palm empty fruit bunches (OPEFB) using Fourier Transform Infrared (FTIR) spectroscopy. Activated carbon was prepared through carbonization at 400 °C followed by chemical activation using KOH. ZnO functionalization was performed via the sol–gel method with a nominal ZnO loading of 10 wt% relative to AC. FTIR analysis revealed dominant absorption bands corresponding to O–H stretching (~3430 cm⁻¹), C=O stretching (~1630 cm⁻¹), and C–O vibrations (~1050–1100 cm⁻¹), indicating the presence of oxygen-containing surface functional groups. The appearance of a characteristic Zn–O vibrational band in the 450–600 cm⁻¹ region confirmed the incorporation of ZnO within the composite structure. Minor peak shifts and variations in band intensity observed after ZnO modification suggest changes in the local chemical environment and possible interactions between ZnO nanoparticles and oxygen-containing functional groups. However, FTIR analysis alone does not provide definitive confirmation of specific interfacial bonding configurations. The results indicate that KOH activation preserved reactive oxygenated functionalities that remained stable after ZnO incorporation. The coexistence of porous AC characteristics and ZnO-associated vibrational features suggests that the synthesized AC/ZnO composite possesses surface chemical properties relevant for adsorption-assisted photocatalytic applications. This work demonstrates the potential valorization of OPEFB biomass into functional carbon-based hybrid materials.
Co-Authors Anjar Siti Mashitoh Arridina Susan Silitonga - Ayu Syufiatun Br Tarigan Ayu Syufiatun Br Tarigan Ayu Syufiatun Br Tarigan Ayu Syufiatun Tarigan Devi Lestari Devi Lestari Devi Lestari Dikki Miswanda Edi Kurniawan Erna Juwita Erna Juwita Husni Husin Iis Siti Jahro Imas Masriah Imas Masriah Imas Masriah Imas Masriah Inten Pangestika Mira Fatmawati Muhammad Abdi Lubis Nahzim Rahmat Najma Aurellia Rahmadhani Nina Hartati Pina Budiarti Pratiwi Pina Budiarti Pratiwi Pina Budiarti Pratiwi Pina Budiarti Pratiwi Pratiwi, Pina Budiarti Prisca Caesa Moneteringtyas Prisca Caesa Moneteringtyas Rahmat, Nahzim Siti Mahmudha Sulwiyatul Kamariah Sani Sulwiyatul Kamariyah Sani Teuku Mukhriza Yanti, Elsa Novri