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All Journal Jurnal Pendidikan Teknologi dan Kejuruan Jurnal Periodic Jurusan Kimia UNP Sainstek Jurnal Riset Kimia Edu Sains: Jurnal Pendidikan Sains dan Matematika JURNAL EKSAKTA PENDIDIKAN (JEP) JURNAL PENDIDIKAN TAMBUSAI Pelita Eksakta Chemistry Education Practice SCIENCE : Jurnal Inovasi Pendidikan Matematika dan IPA CHEDS: Journal of Chemistry, Education, and Science MASALIQ: Jurnal Pendidikan dan Sains Jurnal Kimia dan Rekayasa Jurnal Pendidikan IPA Indonesia Jurnal Pendidikan MIPA Proceeding of International Conference on Biology Education, Natural Science, and Technology
Minda Azhar
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Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Engineering Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Analisis Kadar Vitamin A pada Minyak Goreng Sawit dengan Metode HPLC (High Performance Liquid Chromatography) Asaumi, Suci; Azhar, Minda
MASALIQ Vol 5 No 5 (2025): SEPTEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i5.7108

Abstract

This study is motivated by the importance of vitamin A content in palm cooking oil as an effort to prevent vitamin A deficiency in the community. The objective is to measure the vitamin A content in palm cooking oil using the High Performance Liquid Chromatography (HPLC) method in accordance with SNI 7709-2019. Samples of palm cooking oil were obtained from a store on Jl. Sail, with the analytical procedure involving the preparation of standard vitamin A solutions in acetone and ethanol, the addition of pyrogallol acid as an antioxidant, saponification with 50% KOH, and the addition of glacial acetic acid to improve extraction efficiency. HPLC analysis was conducted using a mobile phase of methanol–aquabidest (860:140) and THF–ethanol (50:50) as the solvent. The chromatogram showed a vitamin A peak at a retention time of approximately 11.40 minutes. The calculated results indicated an average vitamin A content of 1,095.32 IU/g, far exceeding the minimum limit of 45 IU/g as required by the quality standard for palm cooking oil. The study concludes that the HPLC method with this procedure can accurately measure vitamin A content, and the tested palm cooking oil samples meet the vitamin A standard for public consumption.
Skrining Fitokimia Kelopak Bunga Rosella (Hibiscus sabdariffa L.) dalam Bentuk Bunga Kering dan Bubuk Halus Devi, Hafiza Tara; Azhar, Minda
MASALIQ Vol 5 No 6 (2025): NOVEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i6.7596

Abstract

Medicinal plants are vital sources of natural bioactive compounds with potential applications in pharmaceuticals, cosmetics, and functional foods. One such plant with high potential is Roselle (Hibiscus sabdariffa L.), known to contain various secondary metabolites such as flavonoids, alkaloids, saponins, and terpenoids. This study aims to compare the phytochemical profiles of Roselle calyces in two different physical forms—whole dried flowers and powdered form—and to assess the effect of physical treatment on the presence of secondary metabolites. The samples were dried, ground, and sieved to obtain a fine powder, followed by qualitative phytochemical screening using specific reagents: Culvenor-Fitzgerald for alkaloids, Shinoda and cyanidin tests for flavonoids, foam test for saponins, 1% FeCl₃ for tannins, and Liebermann–Burchard test for terpenoids and steroids. The results showed that both sample forms tested positive for alkaloids, flavonoids, saponins, and terpenoids, while tannins and steroids were not detected. These consistent findings suggest that proper drying and grinding processes do not significantly degrade the main active compounds in Roselle. The study concludes that the physical form of Roselle calyces (whole or powdered) does not qualitatively affect its phytochemical profile. These results provide a foundation for optimizing the use of Roselle’s secondary metabolites in phytopharmaceuticals or plant-based product applications.
Development of Guided Discovery Based Stoichiometry E-Modules to Improve Students' Science Literacy Harnas, Dolla Mulyana; Oktavia, Budhi; Azhar, Minda; Dewata, Indang; Pikoli, Masrid
Jurnal Pendidikan MIPA Vol 23, No 3 (2022): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

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Abstract

This research aims to create e-modules based on guided discovery learning that are effective, practical, and support student learning. The research type uses research and development (R&D) using a 4-D model with four steps: definition, design, development, and dissemination. This tool is in the form of a questionnaire on effectiveness and feasibility. Elastic modulus is verified by her 6 validators. Data were analyzed according to the Aikens V formula and percent utility. In the analysis of content validity and technical rating, the average V of Aikens with high valid categories was 0.85 and 0.83. Teacher and student ratings of the practicality questionnaire data were 82% and 83% in the highly practical category. Data analysis shows that young's modulus has high validity and practicality. Therefore, it can be concluded that e-modules based on guided discovery learning are effective, practical, and categorized as teaching materials that improve students' scientific literacy.Keywords: e-module, stoichiometry, guided discovery learning, science literacy.
Development of Structured Inquiries-based Live Workssheet with Chemical Representations to Improve Students’ Higher Order Thinking Skills Dewi, Suci Firma; Azhar, Minda; Dewata, Indang; Yerimadesi, Yerimadesi; Sovia, Eka; Nofrianto, Nofrianto
Jurnal Pendidikan MIPA Vol 23, No 3 (2022): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

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Abstract

Twenty-first century learning means learning designed for millennials to keep up with modern technology. as a result, it requires students to master four learning skills (4Cs), namely: critical thinking, creativity, communication and collaboration. These four skills support students in the learning process now. This study aims uncover the validity, practicality and effectiveness of structured inquiry-based e-modules that use representation to improve student HOTS. The research means research and development (R&D) and the Plomp development model. The query-based E-Module buffer solution is structured and a 3-layer representation is created based on the Plomp development example, which is divided into 3 stages, namely: preliminary research; prototyping; and the assessment stage. The validity test was analyzed using aiken's V derived formula from which validity will occur obtained 0.85 with the category valid. what will happen is that the structured inquiry-based buffer solution module is valid and easy to use for chemical learners. Keywords: e-modules, buffer solutions, live worksheets, multiple representations, structured inquiry DOI: http://dx.doi.org/10.23960/jpmipa/v23i3.pp792-803
BETASIANIN SEBAGAI ANTIKANKER PAYUDARA Verrira, Wilsa Restu; Azhar, Minda
CHEDS: Journal of Chemistry, Education, and Science Vol 7, No 1 (2023)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/cheds.v7i1.6588

Abstract

Breast Cancer (BC) adalah penyebab kematian kedua terbanyak di Amerika setelah kanker paru paru. Amerika Serikat pada tahun 2018, diperkirakan 2500 kejadian kanker payudara akan didiagnosis pada pria dan lebih dari 40.000 perempuan diperkirakan meninggal karena kanker payudara pada tahun 2016. Beberapa alternative pengobatan kanker payudara adalah breast conservation therapy (BCT), Whole-breast radiotherapy (WBRT), breast-conserving surgery (BCS), endocrine therapies (ETs), dan aromatase inhibitors (AIs). Alternatif pengobatan kanker payudara (BC) menyebabkan multiple drug resistance (MDR) dan akhirnya terapi gagal dilakukan. Betasianin merupakan kelompok senyawa flavonoid dengan aktivitas antioksidan, antiradikal, antimikroba dan antikanker yang dapat dikembangkan sebagai antikanker. Betasianin tidak menimbulkan efek samping pada pasien CRC. Artikel ini merupakan review aktivitas betasianin untuk menurunkan resiko kanker payudara (BC) yang ditinjau dari mekanisme molekuler, kemampuan proliferasi sel kanker dan mempromosikan apoptosis sel BC
The Effect of STEM Approach on Students' Critical Thinking Skills Roza, Media; Azhar, Minda; Festiyed, F; Aswirna, Prima; Sari, Rika Purnama
Proceeding of International Conference on Biology Education, Natural Science, and Technology 2023: Proceeding of International Conference on Biology Education, Natural Science, and Technology
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

The influence of the STEM approach has been widely studied. However, a summary of how much influence STEM has on critical thinking skills from these various studies has not been done well. This article examines the impact of the STEM approach on students' capacity for critical thought when studying physics and science. This type of research is quantitative research with meta-analysis methods. Articles from recent four-year publications in national and international journals serve as data sources. Only 16 articles met the criteria for further analysis. This study's method of data analysis involved calculating the effect size to provide a summary effect size. There are four moderator variables analyzed: learning models, teaching materials, subject matter, and education level. Based on the study's findings, it can be said that the STEM approach to fostering students' critical thinking abilities has the largest impact size when used in motion systems courses at the high school level, using media schoology and worksheets for the students. The STEM approach is proven to have a high summary effect size on students' critical thinking skills, with a score of 1.37 (high category).
PERBEDAAN KUALITAS RENDANG DAGING DENGAN PENGGUNAAN BUMBU BASAH DAN BUMBU KERING Mentari, Berhias; Faridah, Anni; Holinesti, Rahmi; Azhar, Minda
Jurnal Pendidikan Teknologi Kejuruan Vol 3 No 3 (2020): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jptk.v3i3.13423

Abstract

Beef rendang is a popular traditional food from West Sumatra which is commonly cooked by using fresh seasoning such as herbs and spices yet not all types of those ingredients are effortlessly available to be found. This issue hinders the local community to cook beef rendang with the original taste of West Sumatra. As a matter of fact, producing dried seasoning to cook rendang could be a possible solution to solve this issue. This study aimed to compare the sensory analysis of beef rendang by using fresh and dried seasoning. This sort of research was a pure experiment with a completely randomized design and 3 repetitions. The ingredients being used are beef, coconut milk, chilies, ginger, galingale, lemongrass, shallots, garlic, lime leaves, bay leaves, turmeric leaves and salt, cooking oil, nutmeg and coriander purchased at traditional markets. The seasoning was sautéed and the coconut milk was poured into the pan, then the beef was added onto the coconut milk with the seasoning until it is half cooked in which the name is Kalio (Like curry, but not become rendang yet), then it was heated up and dried up for hours until the coconut milk dried and turned black which is called rendang. In addition, the data collection technique was carried out by giving a questionnaire to the panelists. The data analysis used was the t-test independent sample t-test using SPSS 15.0 software. The results obtained from the research showed that the average values of the sensory evaluation of the two rendang were almost similar. The average values of beef rendang sensory evaluation using fresh and dried seasoning, respectively, were colour 3.26 and 3.53; aroma 4.0 and 4.13; the texture has the same value, namely 3,4; taste namely 4,6 and 4,46 and the hedonic test 4,33 and 4,20. These results were likely identical as what the statistical test attained (t-test) that there are no significant differences between beef rendang using dried seasoning and fresh seasoning for each sensory testing.
VALIDITAS DAN PRAKTIKALITAS E-LKPD INTERAKTIF BERBANTUAN CANVA AI DAN LIVEWORKSHEET BERBASIS INKUIRI TERSTRUKTUR PADA MATERI ASAM BASA UNTUK FASE F SMA Putri, Nabila Kharisma; Azhar, Minda
SCIENCE : Jurnal Inovasi Pendidikan Matematika dan IPA Vol. 5 No. 4 (2025)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia (P4I)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/science.v5i4.7829

Abstract

Acid-base material often presents a cognitive challenge for students due to its abstract conceptual nature, necessitating innovative teaching materials capable of visualizing the material and enhancing active student engagement. In response to this challenge, this research focuses on the development of an interactive electronic worksheet (e-LKPD) integrating Canva AI and Liveworksheet technology, based on a structured inquiry learning model, specifically for Phase F high school students. This research aims to produce an electronic teaching material product with proven validity and practicality to address student learning difficulties. The methodology used is Educational Design Research (EDR), adopting the Plomp development model, which consists of initial investigation, prototype development, and final assessment. The validation process involved a team of experts consisting of lecturers and chemistry teachers, while field trials involved students to measure the level of applicability. Data findings indicate that this electronic worksheet has high validity, with an average Aiken's V index of 0.92. Furthermore, the practicality test yielded a score of 96% from teacher responses and 91% from student responses, indicating a very practical category. In conclusion, this interactive, structured inquiry-based e-LKPD has met the standards of feasibility, validity, and practicality, making it effective as a support for innovative chemistry learning in schools. ABSTRAKMateri asam basa seringkali menjadi tantangan kognitif bagi peserta didik dikarenakan karakteristik konsepnya yang abstrak, sehingga menuntut adanya inovasi bahan ajar yang mampu memvisualisasikan materi dan meningkatkan keterlibatan siswa secara aktif. Merespons permasalahan tersebut, penelitian ini memfokuskan kegiatannya pada pengembangan E-LKPD interaktif yang mengintegrasikan teknologi Canva AI dan Liveworksheet dengan basis model pembelajaran inkuiri terstruktur, khusus untuk siswa SMA Fase F. Penelitian ini bertujuan untuk menghasilkan produk bahan ajar elektronik yang teruji validitas dan praktikalitasnya guna mengatasi kesulitan belajar siswa. Metodologi yang diterapkan adalah Educational Design Research (EDR) dengan mengadopsi model pengembangan Plomp yang terdiri dari tahapan investigasi awal, pengembangan prototipe, hingga penilaian akhir. Proses validasi melibatkan tim ahli yang terdiri dari dosen dan guru kimia, sementara uji coba lapangan melibatkan peserta didik untuk mengukur tingkat keterterapan. Temuan data menunjukkan bahwa E-LKPD ini memiliki validitas tinggi dengan indeks Aiken’s V rata-rata 0,92. Lebih lanjut, uji kepraktisan menghasilkan skor 96% dari respon guru dan 91% dari respon peserta didik, yang mengindikasikan kategori sangat praktis. Kesimpulannya, E-LKPD interaktif berbasis inkuiri terstruktur yang dikembangkan ini telah memenuhi standar kelayakan, valid, dan praktis, sehingga efektif digunakan sebagai penunjang pembelajaran kimia yang inovatif di sekolah.
VALIDITAS DAN PRAKTIKALITAS E-LKPD INTERAKTIF BERBANTUAN CANVA AI DAN LIVEWORKSHEET BERBASIS INKUIRI TERSTRUKTUR PADA MATERI KONSEP MOL FASE F SMA Febiola, Cyntiya Hanifah; Azhar, Minda
SCIENCE : Jurnal Inovasi Pendidikan Matematika dan IPA Vol. 5 No. 4 (2025)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia (P4I)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/science.v5i4.7830

Abstract

The concept of moles is a basic subject in chemistry learning that is abstract in nature and involves many calculations, and is often a challenge for students to understand. This study aims to determine the validity and practicality of interactive E-LKPD assisted by Canva AI and Liveworksheet based on structured inquiry on the concept of moles for high school students in Phase F. The research method used is educational design research (ERD) with the Plomp development model, which consists of three phases: preliminary research, prototyping phase, and assessment phase. The interactive E-LKPD was designed to facilitate learning with a structured inquiry learning model that allows students to explore the concept of moles systematically and independently through interactive features. Data collection instruments included validation sheets for subject matter and media experts, as well as practicality questionnaires for teachers and students. The results showed that the developed interactive E-LKPD met the validity criteria with an average Aiken's V value of 0.92, which is classified as valid. The practicality test by teachers obtained a percentage of 95%, and the practicality test by students obtained a percentage of 95%, both of which are classified as very practical. These results indicate that interactive      E-LKPD assisted by Canva AI and Liveworksheet based on structured inquiry are feasible to use as effective learning media to help students understand mol concepts more deeply and interactively. ABSTRAK Konsep mol merupakan materi dasar dalam pembelajaran kimia yang bersifat abstrak dengan banyak perhitungan, dan kerap menjadi tantangan tersendiri bagi peserta didik untuk memahaminya. Penelitian ini bertujuan untuk menentukan tingkat validitas dan kepraktisan     E-LKPD interaktif berbantuan Canva AI dan Liveworksheet berbasis inkuiri terstruktur pada materi konsep mol untuk siswa SMA Fase F. Metode penelitian yang digunakan adalah educational design research (ERD) dengan model pengembangan Plomp yang terdiri dari tiga fase: preliminary research, prototyping phase, dan assessment phase. E-LKPD interaktif dirancang untuk memfasilitasi pembelajaran dengan model pembelajaran inkuiri terstruktur yang memungkinkan siswa melakukan eksplorasi konsep mol secara sistematis dan mandiri melalui fitur-fitur interaktif. Instrumen pengumpulan data meliputi lembar validasi untuk ahli materi dan media, serta angket praktikalitas untuk guru dan siswa. Hasil penelitian menunjukkan bahwa E-LKPD interaktif yang dikembangkan memenuhi kriteria valid dengan nilai rata-rata Aiken's V sebesar 0,92 yang termasuk dalam kategori valid. Uji praktikalitas oleh guru memperoleh persentase 95% dan uji praktikalitas oleh siswa memperoleh persentase 95%, keduanya termasuk dalam kategori sangat praktis. Hasil ini menunjukkan bahwa E-LKPD interaktif berbantuan Canva AI dan Liveworksheet berbasis inkuiri terstruktur layak digunakan sebagai media pembelajaran yang efektif untuk membantu siswa memahami konsep mol secara lebih mendalam dan interaktif.
Co-Authors Abdul Razak Abdul Razak Ali Amran Alizar Ulianas Alizar Ulianus Ananda Putra Anni Faridah Ardiansyah, Alexander Asaumi, Suci Budhi Oktavia DESSY NATALIA Devi, Hafiza Tara Devita Efri Dewi, Suci Firma Dwi Putri, Dola Edi Nasra Egidia Mayendra Fajriah Azra Fatimah Jora Febiola, Cyntiya Hanifah Festiyed, F Fitri Amelia Fitri Arsih Guspatni Guspatni Harnas, Dolla Mulyana Hary Sanjaya Ike Ramadhanty Daniel Indang Dewata Iryani Iryani Isriza Mahendra Jamsari Jamsari Khairani - Khairani - Laura Dwi Rha Hayu Ma’a, Yustini Masrid Pikoli Mawardi Anwar Melta, Defrian Mentari, Berhias Meri Novia Nurman Miftahul Khair Minda Azhar Muhammad Farhan Mukhaiyar, Riki Munita, Azizah Nizar, Umar Kalmar Nofrianto Nofrianto Novriansyah, Edo Nur Hikmah Pernadi, Niza Lian Prarazuwa, Salsabila Prima Aswirna Putra, Ananda Putri, Nabila Kharisma Putri, Selvi Apriliana Rafiqa Khaira Rahmi Fauziah Rahmi Holinesti Rahmi, Fathaniah Raviqa Randa Sagita Regita Putri, Olivia Rendi Ananda Rika Purnama Sari Roza, Media Sabrina, Joya Sagita, Randa Sherly Kasuma Warda Ningsih Sovia, Eka Sri Benti Etika Sumaryati Syukur Suryelita, Suryelita Umar Kalmar Nizar Vegi Kurnia Navida Verrira, Wilsa Restu Vovien - Yerimadesi Yerimadesi Yohandri Yohandri Bow Yustini Ma’a Zulhendra, Zulhendra