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All Journal QUANTUM: Jurnal Inovasi Pendidikan Sains Jurnal Penelitian Pendidikan IPA (JPPIPA) Media Eksakta Journal of Education Research Jurnal Akademika Kimia Journal of General Education and Humanities Jurnal Kreatif Online Jurnal Akademika Kimia
Tri Santoso
Pendidikan Kimi-PMIPA FKIP Universitas Tadulako
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Determination Of Total Flavonoid Content In Bangle Plant (Zingiber Montanum)Extraction Results Sri Hastuti Virgianti Pulukadang; Sitti Rahmawati; Tri Santoso; Siti Fatimah; Sitti Aminah; Purnama Ningsih; Magfirah
Jurnal Penelitian Pendidikan IPA Vol 10 No 8 (2024): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i8.7893

Abstract

The bangle plant (Zingiber montanum) is a plant that has been used traditionally as a medicinal ingredient, both for prevention and treatment by the community. Parts of the bangle plant contain active compounds that act as antioxidants, one of which is flavonoids. This research aims to determine the total flavonoid content in bangle plants from the extraction results measured using a UV-Vis spectrophotometer. The method for separating flavonoid levels used is maceration. The research results showed that positive test results were obtained for flavonoid compounds in bangle rhizomes as evidenced by qualitative test results which produced a red color in the sample extract and the average total flavonoid content in bangle rhizomes from the extraction results measured using a UV-Vis spectrophotometer was 23. 1mg/100g.
Potential of Beluntas Leaf Extract (Pluchea indica L) as a basic ingredient for Making Liquid Anti-Mosquito Repellent Sitti Rahmawati; Winarsih; Tri Santoso; Dewi Satria Ahmar; Magfirah; Suherman
Jurnal Penelitian Pendidikan IPA Vol 10 No 7 (2024): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i7.8331

Abstract

The herbaceous Belugas leaves (Pluchea indica L.) belong to the Asteraceae family and are commonly utilized as food and hedges. They typically grow wild. Alkaloids, saponins, flavonoids, tannins, triterpenes, and steroids are among the substances found in belugas leaves that may have insecticidal properties. The purpose of this study is to use the leaf extract of Beluntas (Pluchea indica L.) as a foundational component for liquid mosquito repellant. In order to produce a thick extract of beluntas leaves, this study used an extraction process that involved evaporating 96% ethanol solvent. Several concentrations of the thick extract were diluted, including 15%, 25%, 35%, 45%, and 55%. The collected data, which was mosquito mortality, was subjected to a One-Way Anova test with a significance level of p = 0.000 <0.05, and then the Duncan test.  The findings demonstrated that the number of mosquitoes that perished varied depending on the concentration fluctuations of beluntas leaf extract, with the highest concentration of beluntas leaf extract killing mosquitoes at a rate of 55% and a mosquito mortality percentage of 98.4%.
Pengaruh Media Pembelajaran Animasi terhadap Minat dan Hasil Belajar Siswa pada Materi Struktur Atom Kelas X SMA Negeri 1 Lore Utara Andini Andini; Tri Santoso; Magfirah Magfirah; Ratman Ratman; Detris Detris; Sri Mulyani Sabang
Journal of Education Research Vol. 7 No. 2 (2026)
Publisher : Perkumpulan Pengelola Jurnal PAUD Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37985/jer.v7i2.3725

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh media pembelajaran animasi terhadap minat dan hasil belajar siswa pada materi struktur atom kelas X di SMA Negeri 1 Lore Utara. Penelitian menggunakan pendekatan kuantitatif dengan desain kuasi eksperimen. Sampel penelitian terdiri atas dua kelas, yaitu kelas eksperimen yang menggunakan media animasi dan kelas kontrol yang menggunakan media PowerPoint, masing-masing berjumlah 30 siswa. Data dikumpulkan melalui angket minat belajar dan tes hasil belajar yang diberikan sebelum dan sesudah perlakuan. Analisis data dilakukan menggunakan uji normalitas, homogenitas, serta uji Wilcoxon dan Mann–Whitney. Hasil penelitian menunjukkan bahwa penggunaan media animasi meningkatkan minat dan hasil belajar siswa secara signifikan dibandingkan penggunaan media PowerPoint. Siswa pada kelas eksperimen menunjukkan peningkatan minat belajar yang lebih baik serta pencapaian hasil belajar yang lebih tinggi setelah perlakuan. Hasil uji statistik menunjukkan adanya perbedaan yang signifikan antara kelas eksperimen dan kelas kontrol (p < 0,05). Dengan demikian, media pembelajaran animasi efektif digunakan untuk meningkatkan minat dan hasil belajar siswa pada materi struktur atom.
The Effect of the Lottery Card Method on Discovery Learning Assisted by Video Learning Media on Student Learning Outcomes Nur Azizah; Tri Santoso; Dewi Satria Ahmar; Magfirah Magfirah; Meida Esterlina Marpaung
Journal of General Education and Humanities Vol. 5 No. 1 (2026): February
Publisher : MASI Mandiri Edukasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58421/gehu.v5i1.975

Abstract

This study aims to describe the effect of the lottery card method on student learning outcomes in acid-base solution material during video-assisted discovery learning. This study used a pre-test and post-test control group design. The study population consisted of all 247 ninth-grade students at SMA Negeri 5 Palu, across eight classes.  Two classes were selected as samples, namely class XI Merdeka 5 (control) and class XI Merdeka 6 (experimental), each with the same number of 34 students, using simple random sampling. Data were collected using pre-tests and post-tests. The control class used only the discovery learning model, while the experimental class used the lottery card method in video-assisted discovery learning. From the analysis results, the N-ngai score for the control class was 0.49, and for the experimental class was 0.67, both of which were classified as moderate. Although both were moderate, the N-ngai score for the experimental class was higher than that for the control class. The t-test results showed a significance value of 0.001, which is less than 0.05, so it can be concluded that Ho is rejected and Ha is accepted. Therefore, it can be said that the lottery card method in discovery learning assisted by video media has an effect on student learning outcomes in acid-base solution material.
The Levels of Student Questioning and Critical Thinking Ability in Acid-Base Topics and Correlation with Learning Outcomes Magfirah Magfirah; Zulhan Zulhan; Tri Santoso; Afadil Afadil; Sri H. V. Pulukadang; Meida E. Marpaung
Jurnal Akademika Kimia Vol. 14 No. 1 (2025)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2025.v14.i1.pp29-33

Abstract

Acid-base material is often considered difficult for students because it is abstract, leading to misconceptions and poor learning outcomes. The ability to ask questions reflects cognitive engagement and is closely related to the critical thinking required to understand abstract concepts. Therefore, it is important to examine this skill to obtain evidence of its role in improving chemistry learning outcomes and as a consideration for teachers in determining the appropriate learning process. This study aims to analyze students' questioning skills and critical thinking abilities in acid-base learning and examine the relationship between these skills and students' learning outcomes. A quantitative descriptive approach was employed and conducted at SMAN 1 Dampal Utara. The research subjects comprised 30 students, including 17 females and 13 males. Male students. The sample was selected using a purposive sampling technique. The instruments used for data collection included the questioning skills test and the critical thinking skills test. The results indicated that students’ questioning skills were categorized as moderate with a percentage of 57.5 %, similarly, their critical thinking abilities also fell into the mild category with a rate of 48.33 %. Correlation analysis revealed a significant relationship between questioning skills and learning outcomes (r= 0.386;α=0.035). Meanwhile, the relationship between critical thinking and learning outcomes was shown to be insignificant (r= 0.225;α= 0.173). These findings suggest that questioning skills can contribute to optimal learning outcomes.
Analysis of Bioaccumulation of Mercury (Hg) in Yuyu Crabs (Parathephusa Convexa) in The Janja River, Malomba Village, Dondo District, Tolitoli Regency Tri Santoso; Hasrudin Hasrudin; Sitti Aminah; Sri H. V. Pulukadang
Jurnal Akademika Kimia Vol. 14 No. 1 (2025)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2025.v14.i1.pp8-12

Abstract

The phenomenon of environmental damage due to unlicensed gold mining activities harms aquatic ecosystems. Mercury (Hg) waste from the mining process has the potential to cause bioaccumulation in aquatic biota such as fish and crabs, which can lead to mercury contamination in the human body through the food chain. The bioaccumulation process can also produce toxic organic compounds that harm human health. Therefore, this research aims to determine whether mercury bioaccumulation occurs in yuyu crabs in the Janja River, Malomba Village, Dondo District, Tolitoli Regency, due to gold mining activities. The method used in the research is the calibration curve method with Cold Vapor Atomic Absorption Spectrophotometry (CV-AAS) analysis at a wavelength of 253.7 nm. The results obtained from this research indicate that bioaccumulation has occurred in yuyu crabs that live in the Janja River. The highest accumulated mercury metal levels were obtained at upstream locations with an average of 5.24 ppb; the lowest was in the midstream, which is 1.53 ppb. At the downstream location, it has a mercury concentration of 4.53 ppb. So it shows that the mercury contamination in the yuyu crab samples is below the quality standard threshold, Indonesian National Standard No. 7387 of 2009, for the heavy metal mercury in other types of crabs and crustaceans is 1.0 ppm or 1000 ppb.
Preparation of Biochar from Mango Seed Shell as a Chromium Ion Adsorbent Mery Napitupulu; Ayla Cakrawala; Daud K. Walanda; Tri Santoso
Jurnal Akademika Kimia Vol. 13 No. 2 (2024)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2024.v13.i2.pp57-62

Abstract

The study aims to utilize waste from manga fruit, especially seed shells, as raw material for chromium metal adsorbents in water. Utilizing this waste is one way to support the principle of zero waste for agricultural and plantation products. The biochar preparation process is carried out by pyrolysis, namely, burning in the absence of oxygen. To determine the adsorption capacity of biochar from mango seed shells for chromium ions, analysis was carried out by varying the biochar weight and chromium concentration. The results showed that at carbonisation temperatures of 350 oC, 400 oC, and 450 oC, the water content was 7.5 %, 6.4 %, and 6.2 %, respectively, while the ash content was 6.3 %, 5.9 %, and 5 %, respectively. 6 % respectively. The optimum biochar weight was determined using 20 mg, 40 mg, 60 mg, 80 mg, and 100 mg of biochar. In contrast, the optimum concentration was determined using biochar concentrations of 20 ppm, 40 ppm, 60 ppm, 80 ppm, and 100 ppm. The research results showed that the optimal weight of mango seed shell biochar at a biochar temperature of 450 °C was 100 mg, with a chromium absorption percentage of 92.96%. Meanwhile, the optimum concentration is 20 ppm across all biochars, with chromium absorption of 92.05% for the 450 °C biochar. Manga seed shells have economic value and environmental remediation applications, as they can be converted into adsorbents for chromium metal.
Utilization of Purple Trumpet Flower Extract (Ruellia Tuberosa L.) as an Alternative Acid-Base Titration Indicator Sahri Labotano; Teguh Sukriawan; Sitti Aminah; Dewi S. Ahmar; Tri Santoso; Magfirah Magfirah
Jurnal Akademika Kimia Vol. 15 No. 2 (2026)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2026.v15.i2.pp150-158

Abstract

Anthocyanin-containing plants have potential as environmentally friendly natural acid–base indicators. However, information regarding the suitability of Ruellia tuberosa L. flower extract as a titration indicator remains limited. The aim of this study was to explore the potential of purple trumpet flower extract (Ruellia tuberosa L.) as an alternative acid-base titration indicator. The method used for flower extraction was stepwise maceration with n-hexane, ethyl acetate, and 70% ethanol. The extract was tested for anthocyanin content, color response in buffer solutions at pH 1–14, and performance in strong acid–strong base, weak acid–strong base, and weak base–strong acid titrations. The extract exhibited red at pH 1–3, pink at pH 4–5, colorless at pH 6–8, green at pH 9–12, and yellow at pH 13–14. Endpoint detection was comparable to phenolphthalein and methyl orange, with only slight differences in endpoint pH values. Purple trumpet flower extract shows potential as a natural acid-base indicator and may serve as an alternative for educational and laboratory applications, although further research on stability and quantitative anthocyanin content is still needed.
Determination of Fe(III) Concentration by UV-Vis Spectrophotometry Using Flamboyant Flower Extract as a Complexing Agent Fahril Fahril; Sitti Aminah; Tri Santoso; Purnama Ningsih; Nur Indah
Jurnal Akademika Kimia Vol. 15 No. 2 (2026)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2026.v15.i2.pp159-166

Abstract

Aquatic environments contaminated with iron can pose a threat to human health and other organisms, with a threshold concentration of 0.2 mg/L for hygiene and sanitation purposes. This study aims to analyze Fe(III) concentrations in water using UV-Vis spectrophotometry with a natural complexing agent from flamboyant flower extract as a more economical and environmentally friendly alternative to KSCN. Flamboyant flower extract contains anthocyanin compounds with a density of 1.02 g/cm³ that form a red-colored complex with Fe(III) and exhibit maximum absorption at a wavelength of 510 nm. Optimal complex formation conditions were achieved at pH 1 with an extract volume of 0.15 mL and a reaction time of at least 40 minutes. The complex was found to be stable for 2 days. Analysis results showed that the Fe(III) concentration in the tested water sample was 1.09 mg/L.
Penggunaan Antosianin dari Ekstrak Umbi Ubi Banggai Ungu (Dioscorea Alata L) Varitas Doso sebagai Bioindikator Asam-Basa dan Sumber Belajar Praktikum Mawadda Warahmah; Tri Santoso; Sitti Aminah; Anang Wahid
Journal of Education Research Vol. 7 No. 2 (2026)
Publisher : Perkumpulan Pengelola Jurnal PAUD Indonesia

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

Abstract

Pemanfaatan bahan alam sebagai indikator asam-basa menjadi alternatif ramah lingkungan dalam pembelajaran kimia. Umbi ubi Banggai ungu (Dioscorea alata L.) varietas Doso mengandung antosianin yang sensitif terhadap perubahan pH sehingga berpotensi digunakan sebagai bioindikator alami. Penelitian ini bertujuan untuk menentukan kelayakan ekstrak ubi Banggai ungu sebagai indikator asam-basa dan sumber belajar praktikum kimia. Penelitian dilakukan menggunakan metode eksperimen laboratorium melalui ekstraksi maserasi bertingkat dengan pelarut n-Heksan, etil asetat, dan etanol 70%. Kandungan antosianin dianalisis secara kualitatif dan kuantitatif menggunakan spektrofotometer UV-Vis metode pH diferensial. Ekstrak kemudian diuji pada larutan buffer pH 1–14 dan dikembangkan menjadi kertas tes kit (E-UBU). Hasil penelitian menunjukkan kadar total antosianin sebesar 63,5948 mg/L. Ekstrak menunjukkan perubahan warna merah pada suasana asam, tidak berwarna pada pH netral, dan hijau kebiruan hingga kuning pada suasana basa. Kertas tes kit E-UBU memiliki kestabilan warna hingga 1 bulan. Hasil uji kelayakan memperoleh skor rata-rata 82% dengan kategori sangat layak, sedangkan validasi penuntun praktikum memperoleh skor 87% dengan kategori sangat valid. Dengan demikian, ekstrak ubi Banggai ungu berpotensi sebagai bioindikator asam-basa dan sumber belajar praktikum kimia berbasis kearifan lokal.
Co-Authors Aceng Haetami Aceng Haetami Afadil Afadil Afadil Alifta Alifta Anang Wahid Andini Andini Ayla Cakrawala Dahlan Dariati Dariati Daud Karel Walanda Detris Detris Dewi S. Ahmar Dewi S. Ahmar Dewi Satria Ahmar Esterlina Marpaung, Meida Fahril Fahril Hasrudin Hasrudin Khusnul Khotima Leny Yuanita M. Alim Marhadi Magfirah Magfirah Magfirah Magfirah Magfirah Mardiana Mardiana Mawadda Warahmah Maysara Meida E. Marpaung Meida Esterlina Marpaung Mery Napitupulu Mita Rosita Mufida Nina Zulvita Nur Azizah Nur Indah Purnama Ningsih Raodatul Jannah Ratman Ratman Riska T. Windiastuti Sahri Labotano sauli safitri Sely Artasasta Lawongo Sindi Velesia Tukaedja Siti Fatimah Sitti Aminah Sitti Aminah Sri H. V. Pulukadang Sri H. V. Pulukadang Sri H. V. Pulukambang Sri Hastuti Virgianti Pulukadang Sri Mulyani Sabang Suherman Sukmawati Sukmawati Suriyani Suriyani Teguh Sukriawan Winarsih Yuli Nurmayanti Zulhan Zulhan