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All Journal Jurnal Riset Kimia Konfigurasi : Jurnal Pendidikan Kimia dan Terapan Sainstek : Jurnal Sains dan Teknologi Journal Of Research and Education Chemistry (JREC) Edusainstika: Jurnal Pembelajaran MIPA Community Service Journal Of Economic Education
Lazulva Lazulva, Lazulva
Program Studi Pendidikan Kimia, Fakultas Tarbiyah dan Keguruan, UIN Suska Riau
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Mathematics Physics Other

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BIOSORPSI ION LOGAM Cd (II) DARI LARUTAN MENGGUNAKAN KULIT BUAH PINANG Lazulva, Lazulva; Utami, Lisa
Sainstek : Jurnal Sains dan Teknologi Vol 9, No 1 (2017)
Publisher : IAIN Batusangkar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (187.593 KB) | DOI: 10.31958/js.v9i1.724

Abstract

The ability of betel nut skin as a biosorbent at a low cost to remove the metal ions Cd (II) from the solution has been investigated. This study shows the effect of pH of the solution, contact time and initial concentration on the absorption capacity of betel nut skin. The result of measurement of metal ion content of Cd (II) using AAS shows that optimum pH of biosorption is 6 and the optimum contact time is 15 minutes, while the optimum initial concentration of biosorption is 50 ppm. Based on FTIR spectroscopic spectra, it can be concluded that the functional groups which act as binding metal ions Cd (II) by betel nut skin as biosorbent are amine function group (N-H), alcohol (O-H) and carbonyl (C = O). The result of the langmuir isotherm obtained by the price of Q (maximum absorption) for metal Cd is 1.14 mg / g.
BIFOWREN ( Bioethanol From Organic Waste As Renewable Energy) : Review Pemanfaatan Berbagai Macam Limbah Organik Menjadi Bioetanol Lazulva LAZULVA, LAZULVA; Fatisa, Yuni; Adrina, Putri; Mardhiah
Journal of Research and Education Chemistry Vol. 6 No. 2 (2024): Oktober
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jrec.2024.vol6(2).17325

Abstract

Abstrak Seiring dengan meningkatnya kebutuhan hidup manusia maka semakin banyak pemanfaatan sumber daya alam bahan bakar fosil. Pemanfaatan bahan bakar fosil dapat meningkatkan emisi gas di atmosfer dan pemanasan global. Hal inilah yang mendorong banyak penelitian mencari sumber bahan bakar alternatif, seperti bioetanol. Artikel ini disusun untuk mengetahui potensi pemanfaatan limbah organik melalui proses fermentasi untuk menghasilkan bioetanol, khususnya membahas peran mikroorganisme, kondisi dan metode fermentasi bioetanol yang optimal. Metode penulisan yang digunakan adalah literature review berdasarkan analisa yang dilakukan pada berbagaisumber literature. Metode Solid State Fermentasi (SSF) merupakan metode yang paling sering digunakan dan menghasilkan konsentrasi bioetanol yang cukup tinggi, dari analisa yang dilakukan kondisi optimum untuk memproduksi bioetanol dari kulit buah berada pada kisaran pH 4,5-6, dan kisaran waktu fermentasi 24-120 jam, pada sumber organik lain (seperti limbah nasi basi, limbah air cucian beras, limbah popok bayi, limbah sayuran rumah tangga dan lain-lain) adalah pH 4,6-6, dan 35-130 jam. Kadar bioetanol terbaik terdapat pada produksi bioetanol dari limbah kulit onggok yaitu sebesar 92% melalui penambahan starter dan waktu fermentasi 7 hari. Bioetanol dari limbah kulit onggok ini yang berpotensi lebih lanjut untuk menjadi campuran bahan bakar bensin agar dapat mengurangi penggunaan bahan bakar fosil, selain itu bioetanol dari limbah kulit onggok ini juga dapat dimanfaatkan oleh industri farmasi, industri minuman beralkohol dan desinfektan. Kata Kunci : Bioetanol, Limbah Organik, EBT, Manfaat. Abstract Along with the increasing needs of human life, more and more utilization of natural resources of fossil fuels. The utilization of fossil fuels can increase gas emissions in the atmosphere and global warming. This is what encourages many studies to look for alternative fuel sources, such as bioethanol. This article was prepared to determine the potential utilization of organic waste through the fermentation process to produce bioethanol, specifically discussing the role of microorganisms, conditions and optimal bioethanol fermentation methods. The writing method used is literature review, based on the analysis conducted on various sources of literature, solid state fermentation (SSF) method is the most frequently used method and produces a fairly high concentration of bioethanol, from the analysis conducted the optimum conditions for producing bioethanol from fruit peels are in the range of pH 4, 5-6, and the range of fermentation time 24-120 hours, on other organic sources (such as stale rice waste, rice washing water waste, baby diaper waste, household vegetable waste and others) is pH 4.6-6, and 35-130 hours with the best bioethanol content is found in the production of bioethanol from onggok skin waste which is 92% through the addition of starter and fermentation time of 7 days. Bioethanol from onggok skin waste has further potential to be a mixture of gasoline fuel in order to reduce the use of fossil fuels, besides that bioethanol from onggok skin waste can also be utilized by the pharmaceutical industry, alcoholic beverage industry and disinfectants. Keywords: Bioethanol, Organic Waste, Renewable Energy, Benefits
KESEHATAN DAN EKONOMI BERBASIS RUMAH TANGGA: PELATIHAN TEH KOMBUCHA SEBAGAI IMUNOMODULATOR DAN USAHA MANDIRI Octarya, Zona; Yenti, Elvi; Lazulva, Lazulva
COMMUNITY SERVICE JOURNAL OF ECONOMICS EDUCATION Vol 4, No 1 (2025): Community Service Journal Of Economic Education
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/csjee.v4i1.37069

Abstract

Health and economic self-reliance are two essential aspects in improving the quality of life, particularly for housewives in RT 05 RW 05, Lembah Sari Subdistrict, Rumbai Timur. This community service activity aimed to provide training in the production of kombucha probiotic drinks, which function as immunomodulators and have the potential to serve as an additional source of income. The method used was Participatory Action Research (PAR), which actively involved the community throughout the entire process—from problem identification to reflection on outcomes. The training was conducted in three main stages: planning, implementation, and evaluation. The results of the activity showed an increase in the housewives' understanding of the benefits of kombucha and their ability to produce the drink independently.
PENGEMBANGAN MEDIA FLASHCARD BERBANTUAN AUGMENTED REALITY PADA SUB MATERI REAKSI EKSOTERM DAN ENDOTERM SEBAGAI SUMBER BELAJAR Khairunnisa, Khairunnisa; Lazulva, Lazulva; Mahartika, Ira
Konfigurasi : Jurnal Pendidikan Kimia dan Terapan Vol 9, No 2 (2025)
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/konfigurasi.v9i2.37802

Abstract

This research was instigated with the limitations of tools and materials in the process of practical work activities and the use of limited chemistry learning media. This research aimed at finding out the validity, practicality, and student response tests whose validity was tested by media experts, material experts, language experts, teachers, and students. The research method use was Research and Development (R&D) with Design and Development Research (DDR) model. The preliminary field test was conducted to the eleventh-grade students of class 3 at Senior High School of muhammadiyah 1 Pekanbaru. The product in the form of Flashcard media with Augmented Reality in Thermochemistry practical work was developed in this research. The validation score by media experts, material experts, and language experts wa 82,9% with very valid criterion. Teacher practicality test result was 90% with very practical criterion, and student response test result was 81,7% with very good category. Based on the results obtained from the validity test, practicality test and response test, it can be concluded that augmented reality-assisted flashcard media on exothermic and endothermic reaction sub-material as a learning resource is very feasible and practical to use in the learning process of exothermic and endothermic reactions.Keywords: Augmented Reality, Flashcard, Exothermic and Endothermic ReactionsAbstrakPenelitian ini dilatarbelakangi oleh keterbatasan alat dan bahan dalam proses kegiatan praktikum serta penggunaan media pembelajaran kimia yang terbatas. Tujuan dari penelitian ini ialah untuk mengetahui validitas, praktikalitas, dan uji respon peserta didik terhadap media flashcard berbantuan augmented reality pada sub materi reaksi eksoterm dan endoterm sebagai sumber belajar yang diuji kevalidannya oleh ahli media, ahli materi, ahli bahasa, guru, dan peserta didik. Metode penelitian yang digunakan adalah Research and Development (R&D) dengan model Desain and Development Research (DDR). Uji lapangan awal dilakukan di SMA Muhammadiyah 1 Pekanbaru terhadap peserta didik kelas XI.3. Penelitian ini menghasilkan produk berupa media flashcard berbantuan augmented reality pada sub materi reaksi eksoterm dan endoterm dengan nilai validasi ahli media, ahli materi, dan ahli bahasa diperoleh sebesar 82,9% dengan kriteria sangat valid. Uji praktikalitas guru mendapatkan hasil sebesar 90% dengan kriteria sangat praktis, dan uji respon peserta didik mendapatkan hasil sebesar 81,7% dengan kategori sangat baik. Berdasarkan hasil yang didapatkan dari uji validitas, uji praktikalitas dan uji respon dapat disimpulkan bahwa media flashcard berbantuan augmented reality pada sub materi reaksi eksoterm dan endoterm sebagai sumber belajar sangat layak dan praktis digunakan dalam proses pembelajaran reaksi eksoterm dan endoterm. Keywords: Augmented Reality, Flashcard, Reaksi Eksoterm dan Endoterm
Desain Dan Uji Coba Video Pembelajaran Animasi Menggunakan Canva Pada Materi Koloid nurhusnasari, nurhusnasari; Lazulva, Lazulva
Edusainstika: Jurnal Pembelajaran MIPA Vol 5, No 1 (2025)
Publisher : Universitas Islam Negeri Mahmud Yunus Batusangkar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31958/je.v5i1.14737

Abstract

This research was instigated with the lack of student ability in processing the knowledge gained and the limited learning media in the learning process.  This research aimed at finding out the validity and practicality levels of animation learning video on Colloid lesson.  The development procedures were based on Borg and Gall model which was carried out in only 5 stages consisting of collecting data, planning, developing a product, field testing, and revising the initial product.  The research was conducted at State Senior High School 10 Pekanbaru.  Interview and questionnaire were used to collect data.  The instruments of collecting data were validity and practicality test questionnaires.  Animation video learning medium tested was valid with the percentages 88.57% (very valid) by media experts and 88.33% (very valid) by material experts, and it was tested practically with the percentages 95.38% (very practical) by 2 Chemistry subject teachers and 88.06% by 15 students (very practical).  Based on these results, it was concluded that animation video medium on Colloid lesson was valid and practical so that product test could be carried out at the next stage.
Desain dan Uji Coba Media Video Pembelajaran Menggunakan Software Adobe After Effects Model ICARE pada Materi Termokimia Nauly, Ainun; Lazulva, Lazulva
Konfigurasi : Jurnal Pendidikan Kimia dan Terapan Vol 8, No 2 (2024)
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/konfigurasi.v8i2.31888

Abstract

AbstractThis research was instigated with the videos rarely used in learning, so students were difficult in remembering material when studying independently.  This research aimed at designing learning video with adobe after effects software and ICARE model on Thermochemistry lesson, and the video validity was tested based on validation by material and media experts and, teacher and student practicality tests.  Research and Development (R&D) method was used in this research with design and development research (DDR). Preliminary field test was conducted to the eleventh-grade students of Natural Science 2 at Senior High School of Muhammadiyah 1 Pekanbaru. This research produced a thermochemistry learning video with a media and material expert validation score of 91.2% with very valid criteria. The result of teacher practicality test was 90.2% with very practical category, and the result of student response test was 88.3% with very good category.Keywords: Learning Video, Adobe After Effects, ICARE, Thermochemistry.AbstrakPenelitian ini dilatarbelakangi oleh penggunaan video yang jarang digunakan dalam pembelajaran, sehingga siswa kesulitan mengingat materi saat belajar mandiri. Tujuan dari penelitian ini ialah untuk mendesain video pembelajaran menggunakan software adobe after effects model ICARE pada materi termokimia yang diuji kevalidannya berdasarkan validitas ahli materi, ahli media, uji praktikalitas guru dan siswa. Metode penelitian yang digunakan adalah Research and Development (R&D) dengan model Desain and Development Research (DDR). Uji lapangan awal dilakukan di SMA Muhammadiyah 1 Pekanbaru terhadap peserta didik kelas XI IPA 2. Penelitian ini menghasilkan produk berupa video pembelajaran termokimia dengan nilai validasi ahli media dan ahli materi diperoleh sebesar 91,2% dengan kriteria sangat valid. Uji praktikalitas guru mendapatkan hasil sebesar 90,2% dengan kategori sangat praktis, dan uji respon siswa mendapatkan hasil sebesar 88,2% dengan kategori sangat baik.Keywords: Video Pembelajaran, Adobe After Effects, ICARE, Termokimia.
PENILAIAN KINERJA (PERFORMANCE ASSESSMENT) PESERTA DIDIK DALAM PRAKTIKUM MATERI LARUTAN PENYANGGA (BUFFER) SA’DIAH, HALIMATUN; lazulva, Lazulva; Yasthophi, Arif
Konfigurasi : Jurnal Pendidikan Kimia dan Terapan Vol 8, No 2 (2024)
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/konfigurasi.v8i2.28860

Abstract

This research aimed at knowing the students' performance ability in conducting chemistry practicum using performance assessment instruments.  Questionnaires and student psychomotor observation sheets on buffer solution material were used for collecting the data, the observation sheet has indicators: 1) preparing preparations before doing the practicum, 2) skills in preparing tools and materials, 3) skills in conducting experiments in accordance with the practicum guide, 4) skills in using tools and taking materials, 5) drawing skills or recording the results of practical observations, 6) ability in creating, taking initiative.  This research was conducted at Vocational High Schools of Ikasari Pharmacy and Abdurab Pekanbaru.  This research used a qualitative descriptive.  The population in this research were students at Vocational High Schools of Ikasari Pharmacy and Abdurab Pekanbaru with samples 61 students that were selected using a purposive sampling technique.  The assessment results of the performance indicators in preparing preparations before conducting the practicum was 95.49%, skills in preparing tools and materials were 85.04%, skills in conducting experiments in accordance with the practicum guide was 88.66%, skills in using tools and taking materials were 93.03%, skills in drawing or recording the results of practical observations was 88.93% and the ability in creating, taking initiative were 88.17%, Overall the mean scores of the results students’ performance assessment in practicum the buffer solution material were 89.88%.  Based on these results, it could be concluded that the student performance assessment observation sheet was in very good category in measuring students' psychomotor abilities on the main topic of buffer solutions. Keywords: Performance Assessment Instrument, Psychomotor Ability, Buffer Solution
Studi Molecular Docking dan Evaluasi Farmakokinetik Senyawa Analog Pirazol Turunan Benzen-Sulfonilurea sebagai Inhibitor Enzim Aldose Reduktase and α-Glukosidase Menggunakan Pendekatan In Silico Fatisa, Yuni; Utami, Lisa; Syahri, Jufrizal; Jasril, Jasril; Lazulva, Lazulva
Jurnal Riset Kimia Vol. 15 No. 2 (2024): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v15i2.633

Abstract

The pyrazole scaffold modification in various chemical structures on several studies has shown various biopharmacological activities. This study aims to predict the potential inhibition of pyrazole analogs derived benzene-sulfonylurea (4A, 4B, 4E, 5A, 5C, 5D) against the α-glucosidase (3A4A) and aldose reductase (3RX2) enzymes based on a molecular docking approach using Molecular Operating Environment (MOE) 2020.0102 software and evaluate pharmacokinetic profile (ADMET). In this study, the six test compounds were obtained from previous studies that have been proven antihyperglycemic. The results showed that all the 3,5-disubstituted benzene-sulfonylurea derivative pyrazole analogs are predicted to have low inhibitory activity against the α-glucosidase enzyme. Further, all compounds showed good aldose reductase inhibitor activity and had lower binding free energy values ​​than tolrestat as the positive control (-6.82 kcal/mol). Compound 5C has the best potential inhibitory activity against the aldose reductase enzyme compared to the other test compounds, because it has the lowest binding free energy value (-8.76 kcal/mol) and interacts with important residues on the receptor forming four hydrogen bonds, namely the carbonyl group of SO2 with residues Trp111 and His110, and the carbonyl group of the amide with residues His110 and Tyr48, as well as 3 hydrophobic bonds, namely a pyrazole ring with residues Leu300, Trp219 and a furan ring with Phe122. ADMET properties of the compounds are also predicted. This information provides an opportunity for a 5C compound as an aldose reductase inhibitor agent to develop drug candidates with better and safer activities.
Co-Authors Adrina, Putri Jasril Jasril Jufrizal Syahri Khairunnisa Khairunnisa Lisa Utami Mahartika, Ira MARDHIAH Nauly, Ainun nurhusnasari, nurhusnasari Sa’diah, Halimatun Yasthophi, Arif yenti, elvi Yuni Fatisa Zona Octarya