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All Journal HAYATI Journal of Biosciences JPMS (Jurnal Pendidikan Matematika dan Sains) Jurnal Penelitian Saintek INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni Jurnal Pendidikan Matematika dan IPA Jurnal Sains Dasar Jurnal Matematika & Sains Journal of Degraded and Mining Lands Management Jurnal Pendidikan Biologi Indonesia JPS Unimus Jurnal Inovasi Pendidikan IPA Jurnal Edukasi Matematika dan Sains Indonesian Journal of Science and Technology Jurnal Tadris Kimiya Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Jurnal Ilmiah Peuradeun Jurnal Penelitian Pendidikan IPA (JPPIPA) Indonesian Journal of Chemistry Warta Penelitian Perhubungan Faletehan Health Journal Molekul: Jurnal Ilmiah Kimia JKPK (Jurnal Kimia dan Pendidikan Kimia) Chemistry Education Practice Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Borobudur Journal Evaluation in Education (JEE) Jurnal Keperawatan 'Aisyiyah Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) Molekul: Jurnal Ilmiah Kimia Jurnal Elemen Kimia Jurnal Riset Pembelajaran Kimia IJOBI Holistik Jurnal Kesehatan Jurnal Pendidikan MIPA Indonesian Journal of Science and Education Warta Penelitian Perhubungan IJIS Edu : Indonesian Journal of Integrated Science Education
SRI ATUN
Universitas Negeri Yogyakarta
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science Health Professions Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Other

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PEMBUATAN NANOPARTIKEL EKSTRAK KUNCI PEPET (Kaempferia rotunda) DENGAN ALGINAT PADA BERBAGAI VARIASI KONSENTRASI ION KALSIUM Anisa Nur Khakim; Sri Atun Sri Atun
Jurnal Elemen Kimia Vol 6, No 1 (2017): Volume 6 No 1 Tahun 2017
Publisher : Universitas Negeri Yogyakarta

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Abstract

Tujuan penelitian ini untuk membuat nanopartikel ekstrak kunci pepet (Kaempferiarotunda) dengan alginat pada berbagai variasi konsentrasi ion kalsium dan mengetahuikarakter nanopartikel kunci pepet hasil.Penelitian ini diawali dengan ekstraksi kunci pepetmenggunakan metode maserasi dengan pelarut etanol, dilanjutkan partisi menggunakankloroform dan evaporasi hingga terbentuk ekstrak pekat. Koloid nanopartikel dibuat denganmencampurkan ekstrak pekat kunci pepet dalam 35 mL etanol dan 15 mL akuades kemudianditambahkan larutan alginat dan larutan CaCl???? dengan lima variasi konsentrasi CaCl????, yaitu0,01% b/v; 0,015% b/v; 0,02% b/v; 0,03% b/v dan 0,05% b/v. Padatan terlarut dalam koloidnanopartikel dipisahkan menggunakan sentrifuge kemudian dicuci dengan akuades dandikeringkan menggunakan freezer. Nanopartikel dikarakterisasi menggunakan PSA dan zetasizer untuk mengetahui ukuran partikel dan nilai zeta potensialnya serta SEM untukmengetahui bentuk morfologinya. Metode KLT digunakan untuk membandingkan kandungansenyawa pada ekstrak kunci pepet dengan nanopartikel kunci pepet hasil.Koloid nanopartikelhasil berwarna kuning kecoklatan dan padatan nanopartikel berwarna coklat muda.Nanopartikel hasil pada konsentrasi CaCl???? 0,02% b/v dengan rasio alginat dan CaCl???? (1,4:1)berukuran 100-766 nm sebanyak 100 %; berbentuk bulat; serta nilai zeta potensialnya -49,6mV. Identifikasi dengan KLT menunjukkan kandungan senyawa yang sama antara ekstrakawal dan nanopartikel hasil.
ISOLASI DAN UJI AKTIVITAS ANTIOKSIDAN SENYAWA DALAM EKSTRAK ETANOL TEMU KUNCI DENGAN METODE DPPH Luthfi Fitri Frindryani; Sri Atun Sri Atun
Jurnal Elemen Kimia Vol 5, No 6 (2016): Volume 5,No 6 Edisi 6 Tahun 2016
Publisher : Universitas Negeri Yogyakarta

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Abstract

Tujuan dari penelitian ini adalah menentukan nilai aktivitas antioksidan ekstrak etanol rimpang temu kunci dan melakukan isolasi senyawa metabolit sekunder dalam ekstrak etanol pada rimpang temu kunci (Boesenbergia pandurata).Penelitian ini diawali dengan membuat ekstrak kental rimpang temu kunci dengan etanol, kemudian ekstrak diuji aktivitas antioksidannya dengan metode DPPH dengan variasi konsentrasi sampel 100 μg/mL, 50 μg/mL, 25 μg/mL, 12,5 μg/ml, 6,25 μg/mL dan 3,125 μg/mL. Selain diuji aktivitas antioksidan ekstrak rimpang temu kunci juga dilakukan isolasi senyawa metabolit sekunder dan pemurnian senyawa dengan rekristalisasi menggunakan pelarut etanol, n-heksan dan aseton selanjutnya senyawa hasil isolasi dikarakterisasi menggunakan KLT, UV-Vis, IR dan H-NMR.Hasil pengujian aktivitas antioksidan menunjukkan bahwa nilai IC50 dari ekstrak etanol rimpang temu kunci adalah 92,6404 μg/mL sehingga dapat dikatakan bahwa ekstrak etanol rimpang temu kunci mempunyai tingkat aktivtas antioksidan dengan kategori kuat. Hasil isolasi senyawa ekstrak etanol temu kunci berdasarkan spektra UV-Vis mempunyai λmax 287,40 nm dan 214,20 nm, spektra IR menunjukkan serapan gugus C=C aromatik pada 1571,66 cm-1, C=O karbonil pada 1639,37 cm-1, dan serapan C-O pada 1153,35 cm-1; 1299,93 cm-1; 1377,93 cm-1. Data spektra H-NMR memperkirakan bahwa senyawa hasil isolasi adalah senyawa flavonoid yaitu pinostrobin.
PENGEMBANGAN BUKU PENGAYAAN KIMIA ASAM BASA UNTUK PESERTA DIDIK SMA/MA KELAS XI BERDASARKAN KURIKULUM 2013 Ratri Panggih Pangastuti; Sri Atun
Jurnal Riset Pembelajaran Kimia Vol 6, No 1 (2017): Volume 6 No 1 Tahun 2017
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jrpk.v6i1.6170

Abstract

Tujuan penelitian ini adalah menghasilkan buku pengayaan kimia asam basauntuk peserta didik SMA/MA kelas XI berdasarkan kurikulum 2013 sebagai sumberbelajar mandiri, serta mengetahui kualitas buku pengayaan ditinjau dari komponen isi,penyajian serta bahasa dan gambar berdasarkan penilaian 5 guru kimia SMA/MA.Penelitian ini menggunakan model pengembangan prosedural. Prosedur pengembanganmeliputi 4 tahap, yaitu tahap perencanaan, pengor-ganisasian, pelaksanaan, dan penilaian.Produk awal ditinjau oleh 3 peer reviewer, 1 dosen kimia yang bertindak sebagai ahlimateri sekaligus ahli media. Produk akhir dinilai oleh 5 reviewer, yaitu guru kimiaSMA/MA di Kulon Progo. Hasil penelitian berupa buku pengayaan kimia asam basa.Berdasarkan penilaian 5 reviewer, buku pengayaan ini mempunyai kualitas sangat baikdengan skor rata-rata 4,23 dan persentase keidealan 84,5 %. Dengan demikian bukupengayaan kimia asam basa ini layak digunakan sebagai sumber belajar mandiri untukpeserta didik SMA/MA.
PENGEMBANGAN BUKU PENGAYAAN KIMIA REAKSI REDOKS DAN ELEKTROKIMIA UNTUK SMA/MA BERDASARKAN KURIKULUM 2013 Ade Sofiana Suryani; Sri Atun
Jurnal Riset Pembelajaran Kimia Vol 6, No 1 (2017): Volume 6 No 1 Tahun 2017
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jrpk.v6i1.6173

Abstract

Penelitian ini bertujuan untuk mengembangkan BukuPengayaan Kimia Reaksi Redoks dn Elektrokimia untuk SMA/MAberdasarkan Kurikulum 2013, serta untuk mengetahui kualitasbuku pengayaan ditinjau dari komponen kelayakan isi, penyajian,bahasa dan gambar yang sesuai dengan standar kualitas buku yangbaik.Penelitian ini menggunakan model pengembangan prosedural.Prosedur pengembangan meliputi 5 tahapan yaitu pengamatanpendahuluan dan pengumpulan informasi awal, perencanaan,pengorganisasian, penilaian produk, revisi produk dan analisis datakualitas produk. Buku Pengayaan Kimia Reaksi Redoks danElektrokimia memuat 5 bab materi kimia. Produk awal ditinjauoleh 3 peer reviewer, 1 orang dosen kimia yang bertindak sebagaiahli materi sekaligus ahli media. Produk akhir dinilai oleh 5reviewer, yaitu guru kimia SMA/MA di Banjarnegara. Penilaiandilakukan dengan menggunakan lembar penilaian yang terdiri dari3 komponen penilaian, 12 butir penilaian, dan 24 kriteria penilaian.Hasil penilaian berupa data kualitas produk Buku Pengayaan KimiaReaksi Redoks dan Elektrokimia.Buku Pengayaan Kimia ReaksiRedoks dan Elektrokimia mempunyai kategori baik (B) sehinggalayak digunakan sebagai sumber belajar siswa SMA/MA.
PENGEMBANGAN MINI CHEMISTRY LABORATORY (MCL) BERBASIS ANDROID PADA MATERI KESELAMATAN KERJA DI LABORATORIUM KIMIA Ana Siti Nurjanah; Sri Atun
Jurnal Riset Pembelajaran Kimia Vol 6, No 1 (2017): Volume 6 No 1 Tahun 2017
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jrpk.v6i1.6168

Abstract

Penelitian pengembangan ini bertujuan untuk mengatahui tahap-tahappengembangan aplikasi berbasis android pada materi keselamatan kerja di laboratoriumkimia kelas X SMA/MA. Model pengembangan yang digunakan dalam penelitian inidiadaptasi dari model pengembangan 4-D (four D) yang terdiri atas empat tahapan,yaitu define, design, develop, disseminate. Subjek validasi penelitian, yaitu dosenpembimbing sekaligus ahli materi, ahli media, dan peer reviewer. Subjek penilaianpenelitian, yaitu lima guru kimia SMA/MA sebagai reviewer dan sepuluh peserta didikkelas X SMA/MA. Instrumen berupa angket penilaian produk yang terdiri atas aspekmateri, perangkat soal, bahasa, keterlaksanaan, tampilan dan audio. Hasil penilaianberupa skor yang ditabulasi dan dianalisis menggunakan pedoman kriteria kategoripenilaian ideal untuk menentukan kualitas produk. Berdasarkan penilaian reviewer,kualitas aplikasi Mini Chemistry Laboratory yang dikembangkan ditinjau dari aspekmateri, perangkat soal, bahasa, keterlaksanaan, tampilan, dan audio oleh revieweradalah sangat baik (SB) dengan persentase keidealan setiap aspek berturut-turut89,00%; 90,67%; 93%; 88,89%; 90,28%; dan 88,00%. Berdasarkan penilaian olehpeserta didik aplikasi MCL memiliki kualitas sangat baik (SB) ditinjau dari aspekperangkat soal, bahasa, keterlaksanaan, dan tampilan dengan persentase keidealanberturut-turut 90,00%; 94,%;; 99,42%; dan 89%.
Implementation of The Merdeka Curriculum in The High School Chemistry Learning Process: Analysis of Variations in Hydrocarbon Material Fajar Naqsyahbandi; Nova Irawati Simatupang; Fapriyan Wijoyo Mulyopratikno; Retno Arianingrum; Sri Atun
Jurnal Inovasi Pembelajaran Kimia (Journal of Innovation in Chemistry Education) Vol 6, No 1 (2024): APRIL 2024 EDITION
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jipk.v6i1.57380

Abstract

This study aims to analyze the characteristics of hydrocarbon chemicals in the Merdeka curriculum and curriculum 13, as well as explore variations of hydrocarbon materials taught by teachers in various schools under the Merdeka Curriculum. The type of research used is descriptive qualitative through survey methods. Respondents in this study involved 24 chemistry teachers who worked in DKI Jakarta and Yogyakarta. The selection of respondents was random. The results of this study show that there are differences in the characteristics of hydrocarbon materials taught in the 2013 curriculum and the Merdeka curriculum. In the Merdeka curriculum, most chemistry teachers still do not differ much from each other even though they have been given freedom in teaching, with only slight variations in the selection of the material. Teachers consider materials in hydrocarbon topics very important and must be taught thoroughly because they will be useful in learning the next topic. In making decisions to teach hydrocarbon material, teachers should increase their understanding of learning objectives, student heterogeneity, limited reference sources, school facilities, and students' initial knowledge.
Active Cycle of Breathing Technique pada Pasien Penyakit Paru Obstruktif Kronik: Analisis Penerapan Evidence-Based Nursing Practice Apriani, Nuni; Rayasari, Fitrian; Anggraini, Dewi; Atun, Sri
Faletehan Health Journal Vol 10 No 03 (2023): Faletehan Health Journal, November 2023
Publisher : Universitas Faletehan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33746/fhj.v10i03.652

Abstract

Acute exacerbation in chronic obstructive pulmonary disease (COPD) is characterized by increased production and accumulation of mucus which aggravates clinical symptoms. One of interventions well-known effectively overcoming airway clearance problem is active cycle of breathing technique. The aim of implementing evidence-based nursing practice was to determine the effectiveness of the active cycle of breathing technique on sputum production in COPD patients. The search for evidence was carried out by PICO (problem, intervention, comparison, and outcome) analysis. 18 COPD inpatients and outpatients were selected based on inclusion and exclusion criteria and were given the intervention. Sputum production was measured before and after it. The data analysis was carried out using Wilcoxon with a p value of 0.014 which showed that there was a difference in the amount of sputum production before and after the intervention. The researchers concluded that active cycle of breathing technique is an effective intervention in overcoming airway clearance problems in COPD patients.
Lithogeochemical characteristics and potential hyperaccumulator identification as phytomining agent at the Ratatotok gold mine, Indonesia Aminatun, Tien; Idrus, Arifudin; Simbolon, Doly; Rakhmawati, Anna; Atun, Sri
Journal of Degraded and Mining Lands Management Vol. 11 No. 2 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.112.5251

Abstract

In the future, phytomining will be an environmentally friendly alternative mining technology. Therefore, the exploration of vegetation types having the potential as hyperaccumulators in gold phytomining needs to be carried out. This study aimed to (1) investigate the effect of rock/soil mineralogy characteristics and Au content on the diversity of vegetation types at gold mine sites, and (2) determine the type of potential hyperaccumulator vegetation as a phytomining agent based on the Biological Concentration Factor (BCF). This study was conducted at the Ratatotok gold mine in North Sulawesi Province, Indonesia. The sampling locations consisted of 3 sites, i.e., Bulex, Yance, and Leon, and each site consisted of 5 sampling plots. Soil samples were taken from each sampling plot and then tested for gold content using the ICP-MS method and mineral content using the XRD method. Mineralized bedrock samples were also taken for mineralogical analysis through petrography. Data analysis of soil geochemistry was carried out descriptively. Quantitative descriptive analysis was also carried out to determine the dominant type of vegetation, which was potential for hyperaccumulators at the mine site. The results showed that gold content in the soil affected the diversity of vegetation, which was possibly due to gold stress, which affected plant growth. Based on the BCF value, three local plant species having potential as gold hyperaccumulators with moderate bioaccumulation ability (BCF>0.1-1) were found, namely Pteris vittata, Syzygium aromaticum, and Swietenia mahagoni. However, the use of these plants as phytomining agents requires further research.
Antioxidant Activity of Aloe vera and Prediction of Interaction Mechanisms on ROS1 Kinase and Collagenase Receptorsco Atun, Sri; Aznam, Nurfina; Arianingrum, Retno; Azeeza, Sabira Nurul; Sangal, Aditi
Molekul Vol 19 No 3 (2024)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2024.19.3.11427

Abstract

The Aloe vera plant has been widely used as a food ingredient, medicine and cosmetics. This research aims to test the gel and ethanol extract of Aloe vera leaves as an antioxidant and absorber of UV light in vitro, as well as predicting the interaction mechanism for ROS1 kinase and collagenase receptors in silico.The antioxidant activity test method was carried out in vitro using DPPH (1,1-Diphenyl-2-Picrylhydrazyl-Hydrazine) reagent. Activity as a UV light absorber is carried out by calculating the sun protected factor (SPF) value. The antiaging activity test was carried out by predicting the interaction mechanism of the ROS1 kinase and collagenase receptors in silico using several phenolic compounds that have been found in Aloe vera. The total phenolic content of Aloe vera ethanol extract was 379.136 ± 0.34 GAE/g sample, while that of Aloe vera gel was 0.0619 ± 0.04 GAE/g sample. Aloe vera ethanol extract showed moderate antioxidant activity with an IC50 of 101.9 µg/mL, and is able to absorb UV light at concentrations of 0.05% and 0.1% with ultra protection criteria. Several phenolic compounds found in Aloe vera plants showed high binding energy to ROS1 kinase and collagenase receptors. Isoquercitrin showed the highest binding energy to the ROS1 kinase receptor, while isovitexin showed the highest binding energy to the collagenase receptor. The conclusion of this research showed that Aloe vera leaves contain compounds that have potential as antioxidants and antiaging. Keywords: Aloe vera, antioxidant, antiaging, ROS1 kinase, collagenase
Role of plant growth promoting rhizobacteria on Pteris vittata L as a potential hyperaccumulator plant for gold phytomining agent Aminatun, Tien; Rakhmawati, Anna; Atun, Sri; Idrus, Arifudin; Sujangka, Arsyad
Journal of Degraded and Mining Lands Management Vol. 12 No. 2 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.122.7217

Abstract

Gold phytomining is the extraction of gold from the soil by harvesting specially selected hyperaccumulator plants. One of the potential plant species as a gold hyperaccumulator at the Ratatotok site, North Sulawesi, Indonesia, is Pteris vitata L, possibly because of the presence of rhizobacteria colonies in the roots to help the plant's resistance to metal stress in the soil. The isolation and identification show that the most resistant rhizobacteria to the gold stress is Pseudomonas aeruginosa RTKP1. The study aimed to assess the Pseudomonas aeruginosa RTKP1 to assist the gold bioaccumulation in Pteris vittata L. The phytomining test was carried out with four series of treatments for Pteris vittata L growing media, i.e., (1) tailings without compost and bacterial isolates, (2) tailings with bacterial isolates, (3) tailings with compost, and (4) tailings with compost and bacterial isolate. A descriptive analysis was carried out to analyze the role of the Pseudomnas aeruginosa RTKP1 on gold reduction in the media and gold bioaccumulation in Pteris vittata L. A quantitative analysis was carried out to analyze the bioaccumulation ability of Pteris vittata L with and without the addition of bacterial isolate. The role of the Pseudomonas aeruginosa RTKP1 is to increase the Translocation Factor (TF) and Biological Concentration Factor (BCF), particularly in the roots. The addition of compost to tailings as growing media for Pteris vittata L inhibits the effectiveness of the work of the Pseudomonas aeruginosa RTKP1 in increasing BCF and TF. However, this effect needs to be tested further to obtain significant results.
Co-Authors Abas Susilo Ade Sofiana Suryani Alfin, Riandi Althaaf, Nabila Tsabita Alya Rizkita Irwan Aminatun, Tien Ana Siti Nurjanah Anak Agung Gede Sugianthara Anisa Nur Khakim Anna Rakhmawati Anugrah Anang Respati Apriani, Nuni Arifudin Idrus Arthamena, Vegha Dwi Artina Diniaty Artina Diniaty, Artina Astuti Lestari Ayubi, Mizzan Azeeza, Sabira Nurul Azizah, Fidasari Nur Bian Ihda An Naila Darmono Dessy Kurniasari Dewi ANGGRAENI Dewi Anggraini Emilio L Ghisalberti Erlina Erlina Euis Holisotan Hakim Fajar Naqsyahbandi Fapriyan Wijoyo Mulyopratikno Fauji Agusta Ghabby Maharani P Habibatul Unayah Hadibah Kalor Heru Kuswanto Hurrahman, Mifta Ika Rosdiani Indah Puspita Sari, Mega Insih Wilujeng Jumaiyah, Wati Kamari, Azlan Kasyfi Rifqi Mouromadhoni Laila, Erni Latifah Kurnia Devani Lia Dewi Juliawaty Luthfi Fitri Frindryani Luthfia Ulva Irmita Maemonah, Maemonah Mamluaturrahmatika, Annisa Marpaung, Aisyatur Radhwa Masatake Niwa Mouromadhoni, Kasyfi Rifqi muhamad arif nur rokhman Muhamad Sarip Muhammad Ikhsan Muhammad Ikhsan Mukti Syarifah Mulyopratikno, Fapriyan Wijoyo Nadiya Fitri Anisa Nafakoti, Nadia Naffa Afkarina Izzata Dini Naqsyahbandi, Fajar Nelly Fadliyani Ni Putu Laksmi Cintya Dewi, Ni Putu Laksmi Cintya Nida Qurbaniah Juhara Niwa Masatake Nova Irawati Simatupang Nova Irawati Simatupang, Nova Irawati Nurfina Aznam Oky Pamungkas Pamungkas, Oky Patar Ariyanto Sitorus Purnamaningsih, Nur Aini Rahman, Nanang Rania Nur Farida Ratri Panggih Pangastuti Rayasari, Fitrian Retno Arianingrum RISHA KURNIA DWI HARTANTI Romadhoni, Siti Dzakiya Royani, Elmi Rusdiman Buhera S. Senam Sa'adah, Siti Imroatus Sabar Nurohman Sabar Nurohman Sangal, Aditi Sari, Winda Putri Permata Satriya, M. Agung Senam Senam Simbolon, Doly siswanti ningsih Siti Aisyah SITI NUR'AINI Sjamsul Arifin Achmad Sogen, Jasintah Tagan Sri Lestari Sujangka, Arsyad Suryadi Prasetyo Susila Kristianingrum Suyanta Suyanta Tia Rachmatika Wahyuni Tonapa, Nely Wijoyo Mulyopratikno, Fapriyan Yana Maolana Syah Yani Sofiani Yasaroh, Sabila Yunitri, Ninik