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All Journal Jurnal Pendidikan Vokasi INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni International Journal of Renewable Energy Development Jurnal Penelitian Pendidikan Matematika dan Sains Matematika dan Sains Science and Technology Indonesia Indonesian Journal of Chemistry Communications in Science and Technology Martabe : Jurnal Pengabdian Kepada Masyarakat Kumawula: Jurnal Pengabdian Kepada Masyarakat Jurnal Ilmu Hukum KYADIREN Jurnal Abdi: Media Pengabdian Kepada Masyarakat Sains dan Matematika International Journal of Science and Society (IJSOC) Abimanyu: Journal of Community Engagement Jurnal Pijar MIPA International Journal of Islamic Education, Research and Multiculturalism (IJIERM) Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek) Molekul: Jurnal Ilmiah Kimia Journal of Engineering and Technological Sciences
Nita Kusumawati
Jurusan Kimia FMIPA Unesa
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Development and Characterization of Edible Films Based on Gelatin/Chitosan Composites Incorporated with Zinc Oxide Nanoparticles for Food Protection Bahar, Asrul; Samik, Samik; Sianita, Maria Monica; Kusumawati, Nita; Khafidlah, Ianatul; Muslim, Supari; Auliya, AR. Sella
Molekul Vol 18 No 3 (2023)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2023.18.3.6630

Abstract

The increase in cases of global environmental pollution due to plastic waste makes the development of biodegradable active packaging very urgent. Gelatin (G), is one of the potential edible film raw materials. However, its weak water barrier and mechanical properties have limited its wide application. The addition of chitosan nanofiber (CHNF) and zinc oxide nanoparticles (ZnONP) is expected to improve the mechanical and barrier properties and present antioxidant and antimicrobial properties to the G film. Characterization results using FTIR, SEM, and DSC showed good compatibility between the G, CHNF, and ZnONP matrix. Meanwhile, the packaging test results confirmed that gelatin, CHNF, and ZnONP-based composite films have the potential to be used as functional materials in food packaging.
Study in the impact of quaternized graphene oxide (QGO) composition as modifier on the chemical, physical, mechanical, and performance properties of polyvinylidene fluoride (PVDF)-based nanocomposite membrane Ashabul Kahfi; Kusumawati, Nita; Setiarso, Pirim; Supari Muslim; Sinta Anjas Cahyani; Nafisatus Zakiyah
Communications in Science and Technology Vol 9 No 1 (2024)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.9.1.2024.1393

Abstract

Polyvinylidene Fluoride (PVDF) membranes were modified with quaternized graphene oxide (QGO) synthesized from graphene oxide and quaternized ammonium groups. PVDF/QGO membranes were created by blending PVDF and 0.01-0.05 g QGO via phase inversion. FTIR confirmed the successful QGO incorporation. PVDF/QGO membranes exhibited increased mechanical stiffness. Meanwhile, SEM revealed asymmetric morphology with surface and internal pores. AFM showed the membrane with 0.05 g and QGO had the highest surface roughness of 101.2 nm, which increased filtration area and flux. QGO improved hydrophilicity through hydroxyl and quaternary ammonium groups, enhancing water flux up to 1208 Lm?2h?1 for 0.05 g QGO. Cu2+ rejection increased to 75% for 0.05 g QGO membrane due to chelation and adsorption effects. PVDF/QGO membranes displayed bacterial growth inhibition, unlike pristine PVDF. The inhibition zone diameter increased with more QGO, indicating improved antibacterial activity. Overall, this study demonstrated that QGO improved PVDF membranes' hydrophilicity, antibacterial properties, and mechanical strength.
Effect of layered double hydroxide-graphene oxide modifier composition on characteristics of polyvinylidene fluoride based nanocomposite membranes in the separation of Cu2+ Kusumawati, Nita; Setiarso, Pirim; Supari Muslim; Sinta Anjas Cahyani; Nafisatus Zakiyah; Kahfi, Ashabul
Communications in Science and Technology Vol 9 No 1 (2024)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.9.1.2024.1440

Abstract

This research explored the modified polyvinylidene fluoride (PVDF) nanofiber membranes with a composite of layered double hydroxide (LDH) and graphene oxide (GO) to enhance biofouling resistance. The PVDF/LDH-GO nanocomposite membranes were synthesized via vacuum filtration. FTIR analysis confirmed nanocomposite formation with new peaks indicating the presence of GO and LDH. Variations in the LDH:GO ratio affected the physical, mechanical, and performance properties of the membranes. Based on SEM imaging, the 1:1 LDH: GO ratio exhibited the highest Young's modulus and smallest pore sizes. LDH-GO incorporation increased the mechanical strength, porosity, roughness, hydrophilicity, and pure water permeability of the PVDF membranes. The combination of these factors led to balanced permeability and selectivity values towards Cu2+ solution feeds. LDH-GO was proven effective in modifying the PVDF membrane surface for water treatment and inhibiting biofouling up to 64% against E. coli.
Characterization and Application of Natural Photosensitizer and Poly(vinylidene Fluoride) Nanofiber Membranes-Based Electrolytes in DSSC Zakiyah, Nafisatus; Kusumawati, Nita; Setiarso, Pirim; Muslim, Supari; A'yun, Qurrota; Putri, Marinda Mayliansarisyah
Indonesian Journal of Chemistry Vol 24, No 3 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.86386

Abstract

This comprehensive research has explored the potential of enhancing dye-sensitized solar cells (DSSC) by harnessing environmentally friendly natural dyes, such as chlorophyll pigments from pandanus (664.1 nm) and papaya leaves (664.0 nm), as well as betacyanin pigments from sappan-mangosteen (536.2 nm). Electrochemical analyses elucidated the energy band gaps, revealing a hierarchy with the smallest band gap observed for papaya leaves (1.387 eV), followed closely by sappan-mangosteen (1.389 eV) and pandan leaves (1.396 eV). This research effectively addressed the persistent issue of electrolyte leakage in DSSC development by introducing a polymer electrolyte derived from polyvinylidene fluoride (PVDF) through electrospinning and phase inversion techniques. SEM characterization results and thermogravimetric analysis underscored the superior characteristics and high thermal stability of the PVDF nanofiber polymer for DSSC applications. The study's pivotal findings underscore the remarkable DSSC performance achieved with chlorophyll pigment from papaya leaves, reaching 1.31% efficiency without a polymer electrolyte. Moreover, the sappan-mangosteen dye emerged as a promising contender with the highest efficiency values when applied with polymer electrolyte, recording rates of 1.17% for PVDF NF and 0.95% for PVDF, which are notably comparable to the efficiency of liquid electrolyte at 1.26%.
The Evidentiary Strength of Land Ownership: A Comparison Between Written Documentation and Twenty Years of Continuous Physical Possession Permadi, Iwan; Kusumawati, Nita
Jurnal Ilmu Hukum Kyadiren Vol 6 No 1 (2024): Jurnal Ilmu Hukum Kyadiren
Publisher : PPPM, Sekolah Tinggi Ilmu Hukum (STIH) Biak-Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46924/jihk.v6i1.212

Abstract

This article analyzes the strength of written evidence and proof of physical possession in registering land rights in Indonesia. This normative juridical research examines laws and regulations related to land registration, particularly GR No. 24/1997 and GR No. 18/2021. The results show that while evidence of physical possession for 20 consecutive years can be the basis for land registration, written evidence tends to have stronger evidentiary power in dispute resolution. However, the Indonesian legal system has no clear hierarchy between the two. Judges have an important role in assessing the evidence presented based on the principles of evidentiary law. This research recommends increased socialization on the importance of land registration and the need for a clearer policy on the hierarchy of evidence in land dispute resolution to improve legal certainty.
Analisa Kadar Kalori, Kadar Air, dan Masa Simpan dengan Menggunakan Teknologi Pengiris Guna Produktifitas Produk Keripik Singkong Handajani, Sri; Yasin, Ach; Basukiwardojo, Maria Monica Sianita; Kusumawati, Nita; Kurniawan, Muhammad Ridho Hafid; Rahayu, Nunik Tri; Estiningtyas, Indri Wasa
Abimanyu : Jornal of Community Engagement Vol 5 No 2 (2024): August 2024
Publisher : Universitas Negeri Surabaya

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

Abstract

Cassava can be processed into chips, which have a special appeal with their distinctive flavour and crunchy texture. Cassava chip production creates profits for cassava farmers and is a major industry in some regions. Improving product quality involves various control measures, including handling and packaging of the final product. The frying and draining process is an important factor in extending the shelf life and inhibiting oxidation of a product. The purpose of this study was to determine the effect of the use of appropriate technology (TTG) draining machines on the nutrition and shelf life of cassava chips products. The results showed that the total fat, saturated fat, protein and carbohydrate content of cassava chips products as a result of TTG were 4.91%; 2.26%; 3.11%; 81.01%, respectively. The shelf life of the chips was 5.25 months (157.5 or 158 days). The results of the organoleptic test of cassava chips in terms of colour, aroma, texture and overall liking level received a positive response from the community, both teenagers and adults. The aspects of aroma, taste, texture and colour as well as the overall level of liking with a percentage level of 80% (seblak daun jeruk), 58% (fried chicken), 61% (rendang), and 56% (grilled chicken).
Legal Implementation of the Cancellation of Grants to Adoptive Children who Neglect the Grantor Based on the Civil Code Kusumawati, Nita; Permadi, Iwan; Phra Harini, Novitasari Dian
International Journal of Islamic Education, Research and Multiculturalism (IJIERM) Vol 6 No 2 (2024)
Publisher : The Islamic Education and Multiculturalism Foundation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47006/ijierm.v6i2.347

Abstract

In the case of the above decision, the judge granted the plaintiff's claim to cancel the grant deed and the grant object returned to the rights of the grantor. With the judge's consideration that the adopted child in this case the grantee has neglected the adoptive parents. However, there is a contradiction when referring to the Civil Code, the grantee as an adopted child is not an heir who is obliged to provide alimony obligations to his adoptive parents. This research uses normative legal methods, where law is conceptualized as what is written in legislation (law in books) and as rules or norms that become benchmarks of human behavior that are considered appropriate. This research is based on primary and secondary legal materials, focusing on the norms contained in the legislation. In brief, Grant according to the Civil Code is a free gift made by a person to another party while still alive. However, the obligation of alimony in the Civil Code only regulates biological children to parents, not including adopted children, resulting in a legal vacuum regarding the obligation of alimony of adopted children to adoptive parents. This causes legal uncertainty, even though there is a legal basis for canceling a grant if the recipient does not provide alimony to the grantor. This legal vacuum makes it difficult to apply the principle of grant cancellation in the context of adopted children.
Optimizing Dye-Sensitized Solar Cell (DSSC) Performance through Synergistic Natural Dye Combinations from Beta vulgaris L., Curcuma longa L., and Pandanus amaryllifolius Kusumawati, Nita; Setiarso, Pirim; Muslim, Supari; Zakiyah, Nafisatus; Rahmawati, Khofifatul; Fachrirakarsie, Fadlurachman Faizal
Indonesian Journal of Chemistry Vol 24, No 6 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.93830

Abstract

This study optimizes dye-sensitized solar cell (DSSC) performance using a combination of natural dye components extracted from Beta vulgaris L. (beetroot), Curcuma longa L. (turmeric), and Pandanus amaryllifolius (pandanus leaf). These plants were selected for their natural pigments—betacyanin, curcuminoids, and chlorophyll—which potentially act as DSSC sensitizers. Dyes were extracted via maceration with ethanol solvent (1:6 sample:solvent ratio) for 24 h. Filtrates were combined in various ratios to test DSSC performance. The optimal C4 dye combination, with a 2:1:1 ratio (betacyanin:curcumin:chlorophyll), demonstrated the best performance. The UV-vis analysis revealed complex interactions and synergistic effects among dye combinations, characterized by increased light absorption in the 400–700 nm range. Cyclic voltammetry analysis showed favorable energy band gap values, confirming the pigments' suitability for DSSC applications. FTIR analysis confirmed the stable coexistence of the three dyes without new bond formation. Photovoltaic performance testing showed the C4 three-dye combination achieved the highest energy conversion efficiency of 3.57%. These results demonstrate the potential of this dye combination to contribute to the development of sustainable and efficient solar energy conversion in DSSCs.
Optimization of Radiation and Electric Current Storage in a Dye-Sensitized Solar-Cell System Based FTO/TiO2 /Acy/PVDF/C/FTO Modules for Electrical Equipment Applications Kurniawan, Muhammad Ridho Hafid; Cahyani, Sinta Anjas; Kusumawati, Nita; Setiarso, Pirim; Muslim, Supari
Science and Technology Indonesia Vol. 10 No. 2 (2025): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.2.574-587

Abstract

Indonesia has an electrification rate exceeding 99% as of 2020, yet it faces increasing electricity demands amid declining fossil fuel availability. Solar energy, particularly through DSSC, presents a promising renewable alternative, benefiting from an abundant radiation potential of up to 120.000 TW. DSSC have garnered significant attention due to their thin design, high efficiency, ease of fabrication, and environmental friendliness. The DSSC module was designed using two FTO glass plates as electrodes, with an anode surface area of 3 cm2. The TiO2 photoanode was prepared using a casting knife technique and then sintered at 450°C for one hour. This was followed by sensitization with anthocyanin dye derived from the butterfly pea flower under acidic conditions for 24 hours to ensure the stability of the compound. The electrolyte system consisted of PVDF NF membranes soaked in the electrolyte    solution for one hour to prevent leakage, thus completing the FTO/TiO2/PVDF/C/FTO system. Performance optimization involved arranging 20 DSSC cells in a mixed series-parallel circuit configuration. Electrical parameters were measured using a multimeter under various lamp irradiation durations. The optimal efficiency was achieved with 5 hours of irradiation, resulting in 2.050 mV and 23.5 x 10-3 µA. When integrated into a battery system, the DSSC module demonstrated effective current storage stability over 6 hours, indicating strong potential for practical implementation in sustainable energy generation for real-world applications. 
PELATIHAN PEMBUATAN HAND SANITIZER BERBASIS BAHAN ALAM UNTUK MENDUKUNG PROTOKOL KESEHATAN DI ERA PANDEMI COVID-19 Maharani, Dina Kartika; Kusumawati, Nita; Setiarso, Pirim; Sanjaya, IGM; Monica, Maria; Samik, Samik; Safitri, Rizka Dwi; Nurzulla, Weka Firda Rizki; Rhamdiyah, Fastabiqul Khairati; Ramadanti, Awanda Halida; Naulia, Kaila; Lailiyah, Nur
Kumawula: Jurnal Pengabdian Kepada Masyarakat Vol 6, No 1 (2023): Kumawula: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kumawula.v6i1.39267

Abstract

Pandemi Covid-19 menuntut masyarakat untuk selalu menerapkan protokol kesehatan terutama jika berada di luar rumah atau saat berada di kerumunan. Salah satunya yang gencar disosialisaikan adalah mencuci tangan dengan sabun atau menggunakan hand sanitizer. Kebiasaan baru ini meningkatkan kebutuhan hand sanitizer yang tinggi di pasaran. Hand sanitizer yang sudah ada di pasaran umumnya realtif cukup mahal dan berbasis alkohol yang kurang ramah lingkungan. Oleh karena itu perlu diadakan pelatihan pembuatan hand sanitizer berbasis bahan alam sebagai bentuk edukasi kepada masyarakat untuk memperoleh hand sanitizer yang murah dan ramah lingkungan. Pelatihan diikuti oleh peserta yang mayoritas berdomisili di wilayah Driyorejo, Gresik. Tujuan diadakannya pelatihan ini adalah agar warga Driyorejo, Gresik yang mayoritas bekerja di bidang industri memiliki pengetahuan dan keterampilan untuk membuat hand sanitizer secara mandiri dari bahan yang mudah diperoleh di sekitar rumah.  Bahan alam yang digunakan yaitu daun kemangi dan daun sirih, serta diberikan juga pelatihan untuk pembuatan hand sanitizer alkohol dalam sediaanspray dan gel. Kegiatan pelatihan dilakukan pada 4 September 2021 secara webinar, penyampaian materi dilakukan melalui Zoom. Pelatihan  dilaksanakan dengan peserta sebanyak 87 orang. Kepada 20 peserta diberikan kesempatan untuk membuat hand sanitizer sendiri di rumah dengan mempraktikkan ilmu yang telah didapatkan dari pelatihan. Sebagai bahan evaluasi, peserta diwajibkan mengirimkan video saat proses pembuatan. Hasil evaluasi kegiatan pelatihan hand sanitizer menunjukkan bahwa masyarakat Driyorejo telah terampil membuat hand sanitizer alami maupun berbasis alkohol.
Co-Authors A'yun, Qurrota Ach. Yasin Al Hafidl, Achmad Naufal Ashabul Kahfi Ashabul Kahfi, Ashabul Asrul Bahar Auliya, AR. Sella Berlian, Binar Bertha Yonata Cahyani, Sinta Anjas Dewi Saputri, Ratih Dina Kartika Maharani Dzulkarnain, Shod Abdurrachman Elvina Rossa Erina Rahmadyanti 2) Estiningtyas, Indri Wasa Fachrirakarsie, Fadlurachman Faizal Fatma Listiandari, Intan Hafidha, Qonita Arky Hapsari, Veronica Lita Hasanah Jusman, Nur Hery Widijanto Indah, Novita K. Isyrak, Luthfiyah Iwan Permadi Khafidlah, Ianatul Kurniawan, Muhammad Ridho Hafid Mahanani Tri Asri Maria Monica Sianita Maria Monica Sianita Basukiwardojo MEDA WAHINI Monica, Maria Mugiyanto, Agus Nabila, Mutiara Azfa Nafisatus Zakiyah Naulia, Kaila Nuniek Herdyastuti Nur Hayati Nurrohman Sidiq, Muhammad Nurzulla, Weka Firda Rizki OCKTAVIANI, YOVI Phra Harini, Novitasari Dian Pinto, Floriana A. Pirim Setiarso Prahara, Mirwa Adi Prima Retno Wikandari Putri, Marinda Mayliansarisyah Putri, Sovranita Ramadhani Setiawan Rahayu, Nunik Tri Rahmadyanti, Erina Rahmawati, Khofifatul Ramadanti, Awanda Halida Restuti, Hermasari Rhamdiyah, Fastabiqul Khairati Rinaningsih Riska Nur Safitri, Riska Nur Rita Ismawati Rudi Setiawan, Ahmad Rus, Ridwan Che Rusmini Rusmini Safitri, Rizka Dwi Samik Samik Sanjaya, IGM Sari Edi Cahyaningrum Setiawan, Ferdiansyah Sinta Anjas Cahyani Sri Handajani Supari Muslim Supari Muslim Sutoyo, Suyatno Titik Taufikurohmah TRIMAYANTO, SIGIT Yani Ekwandi Wibowo Yulianto, Egy Henry Zakiyah, Nafisatus