Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

3.229

P-Index

This Author published in this journals

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 PROFICIO: Jurnal Pengabdian Masyarakat 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

Author-ID : 303453

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

Published : 36 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3 4

PEMANFAATAN LIMBAH KULIT UDANG SEBAGAI BAHAN BAKU PEMBUATAN MEMBRAN ULTRAFILTRASI Kusumawati, Nita
INOTEKS: Jurnal Inovasi Ilmu Pengetahuan,Teknologi, dan Seni Vol 13, No 2 (2009)
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ino.v13i2.41

AbstractThis research was aimed to study the made of chitosan membrane.The chitosan membrane was made from industrial waste of prawn packingfactory. The prawn husk was extracted to become chitin before it was thentransformed to chitosan. In order to make a membrane, the chitosan wasmixed with an acetic acid solution using magnetic stirrer. The mixed ofchitosan and an acetic acid solution was doing for 24 hour to make sure thesolution are homogenic. After that, chitosan solution was stored to glassplate 10x10 cm. The glass plate that have been with chitosan solution thendried for 48 hours. A Chitosan Membrane that have made was keeped withthe plate until it used.Keywords: chitosan membrane, industrial waste

EVALUASI PERUBAHAN TEMPERATUR, pH DAN KELEMBABAN MEDIA PADA PEMBUATAN VERMIKOMPOS DARI CAMPURAN JERAMI PADI DAN KOTORAN SAPI MENGGUNAKAN LUMBRICUS RUBELLUS Kusumawati, Nita
INOTEKS: Jurnal Inovasi Ilmu Pengetahuan,Teknologi, dan Seni Vol 15, No 1 (2011)
Publisher : Universitas Negeri Yogyakarta

The purpose of this activity is to evaluate the changes in temperature, pH, and moisture mixed media during the composting process of rice straw and cow manure using earthworms Lumbricus rubellus as bioactivator. Vermi- compos is carried out by making a mixture consisting of 0%, 25%, 50%, 75% and 100% of waste rice straw in cow dung. The media is inserted into a plastic container and then fermented. In every 250 grams of fermented media is insert- ed as much as 250 grams of earthworms (Lumbricus rubellus) aged 2 months. During the composting process, regular measurement of temperature and pH of the media was doing. At the end of composting with earthworms, temperature is lowest at 26-28.6 ºC, there are 0% -25% of rice straw in cow dung. While the temperature of the media without earthworms lowest in the range of 26.8-29,3 ºC, there are 0% -25% of rice straw in cow dung. Media acidity during the composting process was almost the same for media without earthworm and with earthworms. Humidity highest during the composting process with earth- worms is around the 50.17 to 65.48% (0% rice straw), while the highest media moisture during the composting process without earthworms ranged from 50.07 to 64.36% (0% rice straw) (100% rice straw)

Development of Active-Smart Packaging: Effect of Chitosan Nanofiber, Zinc Oxide Nanoparticles, and Anthocyanin on Gelatine-Based Halochromic Film for Meat Preservation Kusumawati, Nita; Bahar, Asrul; Basukiwardojo, Maria Monica Sianita; Samik, Samik; Rahayu, Nunik Tri; Estiningtyas, Indri Wasa; Kurniawan, Muhammad Ridho Hafid
Journal of Engineering and Technological Sciences Vol. 57 No. 3 (2025): Vol. 57 No. 3 (2025): June
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2025.57.3.7

Gelatine-based smart active packaging has the potential to improve the quality of packaged meat and monitor its freshness without having to open it. This research aims to develop halochromic films by combining gelatine films with chitosan nanofibers (CHNF) and zinc oxide nanoparticles (ZnONPs). The addition of nanofillers such as CHNF and ZnONPs has been proven to improve mechanical properties (The humidity decreased by approximately 15.6%, while Young’s modulus increased tenfold) and provide active packaging properties, such as antioxidants (IC50 test decreased 13% from 33,12191 to 28,82021) and antimicrobials against S. aureus (increased from 9,40 to 19.73 for inhibition zone), E. coli (increased from 6.61 to 19.91 of inhibition zone), and P. aeruginosa (increased from 8.63 to 18.65 of inhibition zone). Meanwhile, the smart packaging properties are provided by anthocyanin from telang flowers, which can change color as the freshness of the meat decreases or the acidity of the meat changes. The quality of smart active packaging is reflected in the pH sensitivity, ammonia release, and anthocyanin release. The film's mechanical properties also showed improvement in humidity, Young's modulus, water vapor permeability (WVP), and water solubility. Fourier Transform Infra-Red (FTIR) characterization analysis showed good compatibility between the gelatine, anthocyanins, CHNF, and ZnONPs matrix. This research result demonstrates that gelatine-based films with a combination of CHNF and ZnONPs can be used to create eco-friendly and multifunctional packaging films for meat preservation.

Ionic liquid ultrasound-assisted extraction (IL-UAE) for duck feather keratin and in silico evaluation as a potential procollagen n-endopeptidase inhibitor Sianita, Maria Monica; Kusumawati, Nita; Asri, Mahanani Tri; Dzulkarnain, Shod Abdurrachman; Al Hafidl, Achmad Naufal; Kahfi, Ashabul; Nabila, Mutiara Azfa; Setiawan, Ferdiansyah; Isyrak, Luthfiyah; Rahmawati, Khofifatul
Communications in Science and Technology Vol 10 No 1 (2025)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.10.1.2025.1669

This research aims to optimize keratin extraction from duck feathers using an eco-friendly ionic liquid-ultrasound-assisted extraction (IL-UAE) method and evaluate its potential applications in tissue engineering. It investigated the effects of deposition pH (1-6), ultrasonication temperature (40-60°C), and time (60-180 min) on extraction yield and physicochemical properties. The results demonstrated the optimal extraction conditions at pH 3, 40°C, and 60 minutes, yielding 82% keratin with a 0.50 mg/mL concentration, while the lowest yield production was found at pH 6 (33%, 0.20 mg/mL). Meanwhile, characterization via FTIR confirmed predominant ?-sheet structures with characteristic peaks at 3250-3300 cm?¹ (N-H/O-H stretching) and 1700-1500 cm?¹ (C=O stretching). SDS-PAGE revealed pure keratin bands (10-15 kDa), while SEM showed layered, porous morphology suitable for biomaterial applications. Thermogravimetric analysis, furthermore, identified three degradation stages occurred at 0-200°C (3.05% loss), 200-400°C (39.37% loss), and 400-700°C (31.13% loss). Amino acid profiling revealed high L-cystine content (153,064.90-156,926.33 mg/kg) with the significant amounts of glycine (63,958.25-64,064.73 mg/kg), L-proline (77,631.16-77,717.42 mg/kg), and L-leucine (59,111.43-59,198.60 mg/kg). In silico molecular docking studies identified leucine as a promising procollagen N-endopeptidase inhibitor (binding energy -5.0 kcal/mol), which controlled the collagen-breaking and forming process. This ability makes keratin potential to be developed as a scaffold for bone tissue regeneration in medical industry.

Optimizing Dye-Sensitized Solar Cell Efficiency with a Triple Blend of Caesalpinia sappan L., Dracaena angustifolia, and Clitoria ternatea L. Kusumawati, Nita; Rahmawati, Khofifatul; Setiarso, Pirim; Muslim, Supari; Zakiyah, Nafisatus; Fachrirakarsie, Fadlurachman Faizal
Molekul Vol 20 No 1 (2025)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2025.20.1.12063

ABSTRACT. Dye-sensitized solar cells (DSSCs) offer a promising sustainable solution to global electricity challenges by converting sunlight into electricity using photosensitive dyes. This study explores the performance of DSSCs using natural dyes from sappanwood (Caesalpinia sappan L.), pandan leaves (Dracaena angustifolia), and telang flowers (Clitoria ternatea L.). Extraction of the dyes was done through maceration, with combinations made in single, double, and triple-component blends. UV-Vis spectroscopy showed increased light absorption in the 400-700 nm range. Combination F5 uniquely showed absorption peaks at 534.22, 573.64, 619.12, and 664.21 nm, which were affected by nine conjugated double bonds and electron transfer from C=C and carbonyl groups. Comparative band gap energy analysis showed that the triple-blending dyes exhibited the lowest energy range of 0.3392-0.4469 eV, compared to the double dye (0.4549-0.5778 eV) and single dye (0.4541-0.6248 eV), indicating better light harvesting ability. FTIR analysis confirmed the chemical structure of the dye. Prominent spectroscopic features include a broad band of 3332 cm-1 for hydroxyl groups, peaks at 2919 cm-1 and 1732 cm-1 representing alkane and carboxyl groups in cellulose, and an aromatic lignin C=C stretch at 1672 cm-1. The optimized F5 blend (1:2:1 ratio) achieved the highest solar cell efficiency of 3.24% with a band gap of 0.3392 eV. These results validate the potential of natural dye blends as DSSC sensitizers, showing enhanced absorption spectrum, improved stability, and increased electric current generation. Keywords: Dye-sensitized solar cells, Triple-component blending, Caesalpinia sappan L., Dracaena angustifolia, Clitoria ternatea L.

Optimization of Encapsulation of Moringa Oleifera Antioxidant Activity with Ionic Gelation Method Using Sodium Alginate and CaCl2 Pinto, Floriana A.; Kusumawati, Nita
International Journal of Science and Society Vol 6 No 4 (2024): International Journal of Science and Society (IJSOC)
Publisher : GoAcademica Research & Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54783/ijsoc.v6i4.1304

The diversity of medicinal plant benefits in Timor Leste. One of them is the Moringa plant which has not been utilized properly such as roots, bark and leaves. Unhealthy living habits can trigger poor human health. Namely malnutrition and exposure to free radicals cause cell damage in the body and ultimately have a major impact on health. Antioxidants as the right effort to be able to ward off and capture free radicals and replace damaged body cells, help in the regeneration of new cells. Antioxidants can be obtained from leaves, bark and roots of Moringa which are rich in high nutrition, encapsulated with Sodium Alginate and CaCl2. The purpose of the study was to determine the physical and chemical characteristics of Moringa leaf, bark and root extracts. Benefits for innovating functional Moringa food products with the highest antioxidant content, namely Moringa leaves. Using the ionic gelation method with nano synthesis testing with variations of Sodium Alginate and CaCl2 with variations in the ratio between (3: 1, 4: 1, and 5: 1). Testing of physical and chemical characteristics of superior results at a ratio of 5: 1. The results of the antioxidant test showed that the best Moringa leaves had an IC50 value of <50 ppm, its effectiveness in inhibiting free radicals was higher than extracts from other parts of Moringa. After encapsulation, the leaf extract yield was 29.81262851 ppm, the bark 40.69652802 ppm, and the roots 43.56171361 ppm

Kajian Tanaman Pekarangan di Pulau Kangean, Sumenep, Madura, Jawa Timur Indah, Novita K.; Kusumawati, Nita; Mugiyanto, Agus
Sains dan Matematika Vol. 8 No. 2 (2023): Oktober, Sains & Matematika
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/sainsmat.v8n2.p50-55

Pekarangan keluarga masyarakat Pulau Kangean mempunyai hubungan yang erat dengan penghuni rumah dalam kehidupan sehari-hari. Pengelolaan dan pemanfaatan pekaran dapat menjadikan pekarangan sebagai lumbung hidup, warung hidup, dan apotek hidup sertsa menjadi lahan konservasi kekayaan plasma nutfah. Tujuan penelitian ini adalah untuk menginventarisasi spesies, menganalisis spesies tanaman pekarangan berdasarkan kegunaannya dan menganalisis bagian tanaman yang digunakan dengan cara mendeskripsikan bagiam dan kegunaan bagian tersebut secara kualitatif. Penelitian ini menggunakan metode eksplorasi dengan bertempat di Kecamatan Arjasa dan wawancara terhadap masyarakat dengan snowball sampling. Berdasarkan familinya, tanaman yang paling banyak ditemui berasal dari famili Anacardiaceae dan Zingiberaceae. Anggota Anacardiaceae dikonsumsi bagian buah sedangkan anggota Zingiberaceae digunakan untuk bumbu masak dan rempah obat atau tanaman toga. Spesies yang ditemukan sebanyak 37 jenis. Kegunaannya antara lain sebagai sumber pangan, tanaman hias, peneduh jalan, tanaman obat dan rempah. Bagian tumbuhan yang digunakan meliputi daun, batang, buah, buah, dan biji atau dengan kata lain seluruh bagian tanaman dapat digunakan oleh masyarakat.

The Evidentiary Strength of Land Ownership: A Comparison Between Written Documentation and Twenty Years of Continuous Physical Possession Kusumawati, Nita; Permadi, Iwan
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

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.

Optimization of Polysulfone/Polyethylene Glycol (PSf/PEG) Casted Solution Composition as a Membrane Electrolyte in a Dye-Sensitized Solar Cell (DSSC) Cahyani, Sinta Anjas; Kusumawati, Nita
Jurnal Pijar Mipa Vol. 19 No. 3 (2024): May 2024
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.v19i3.6610

Stability is the main challenge in developing electrical energy made from sunlight, namely Dye-Sensitized Solar Cell (DSSC). The DSSC system comprises a photoanode, electrolyte, comparison electrode, and dye sensitizer with a photoelectrochemical working principle. Dye sensitizer and electrolyte are the main components that determine the stability of DSSC, with problems such as solvent evaporation leakage in liquid electrolytes and dye desorption. In overcoming these problems, the polymer electrolyte of Polysulfone/Polyethylene Glycol (PSf/PEG) is a solution to the problem by increasing the mobility of I-/I3- ions in the electrolyte. Polymer composition and porogen (pore formers) affect the ionic conductivity, which impacts the electron flow of the DSSC system. Therefore, this study optimized the composition of PSf/PEG polymer electrolyte, namely 18/0, 17/1, 16/2, 15/3, 14/4, and 13/5. This research was carried out using quantitative methods with data processed in a quantitative descriptive manner to determine the performance of DSSC based on PSf/PEG membrane electrolyte. The wavelength absorption of the dye was characterized using a Spectrophotometer UV-Vis instrument, and the specific wavelength was obtained at 573 nm, which indicates anthocyanin absorption. Electrochemical characterization of the dye using voltammetry yielded a resulting energy bandgap value of 0.5132 eV with the touch plot method. Testing the performance and stability of DSSC, voltage, and current measurements were carried out using a multimeter, and fill factor and efficiency calculations were carried out. The performance of DSSC with liquid electrolytes was 1.66%, while that of DSSC with membrane electrolytes of the best composition (16/2) was 1.38% at 0 hours. In addition, the performance test was carried out at 72 hours of exposure time, resulting in an efficiency of 0.77%, while the DSSC with the best composition of membrane electrolyte (16/2) was 1.11%. This shows a decrease in the efficiency of DSSC with liquid electrolytes by 53.43%, while the membrane electrolyte efficiency of DSSC is 19.33-20.17%.

The Effect of Polyetherimide Polymer Membrane Composition on the Performance Efficiency of Dye Sensitized Solar Cell (DSSC) Based on Natural Photosensitizer of Butterfly Pea Flowers Fachrirakarsie, Fadlurachman Faizal; Kusumawati, Nita
Jurnal Pijar Mipa Vol. 19 No. 3 (2024): May 2024
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.v19i3.6636

Global energy consumption will grow 1.3% in 2023-2024. This raises concerns about the scarcity of energy sources, most of which come from coal. This research is a true experiment with a one-shot case study design and aims to analyze the Dye-Sensitized Solar Cell (DSSC) from butterfly pea flowers (BPF) extract. However, DSSC has significant problems with liquid electrolyte leakage and solvent evaporation. Therefore, polyetherimide (PEI) membranes were investigated to overcome this problem. The BPF extract was examined for wavelengths, producing 573 nm and 617 nm wavelengths. The band gap was also checked, and it was found to produce 0.52 eV. The membrane used has five variations, where M3 is the most stable, with a reduction in performance efficiency of only 98%. The membrane has a porous surface, asymmetric structure, and a crystallinity degree of 12.77%. Overall, this membrane shows the most optimal performance in DSSC among other membranes.

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 Estiningtyas, Indri Wasa Fachrirakarsie, Fadlurachman Faizal Fatma Listiandari, Intan Gina Noor Djalilah Hafidha, Qonita Arky Hapsari, Veronica Lita Hasanah Jusman, Nur Hery Widijanto I GUST MADE SANJAYA 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 Nur Hayati Nurrohman Sidiq, Muhammad Nurzulla, Weka Firda Rizki OCKTAVIANI, YOVI Perdana, Senja Salzanabila Putri 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 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

Title

Found 36 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 36 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 36 Documents
Search