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All Journal International Journal of Applied Power Engineering (IJAPE) Jurnal Pengajaran MIPA Jurnal Pendidikan IPA Indonesia Biotropika Jurnal Akuntabilitas Manajemen Pendidikan WARTA EduChemia: Jurnal Kimia dan Pendidikan Jurnal Tadris Kimiya Jurnal Zarah Jurnal Pendidikan Biologi Science and Technology Indonesia SPEKTRA: Jurnal Kajian Pendidikan Sains Jurnal Penelitian Pendidikan IPA (JPPIPA) Orbital: Jurnal Pendidikan Kimia BIOEDUSCIENCE Jurnal Ilmu Nutrisi dan Teknologi Pakan PENDIPA Journal of Science Education JURNAL ILMIAH PETERNAKAN TERPADU BIOEDUSAINS: Jurnal Pendidikan Biologi dan Sains CARADDE: Jurnal Pengabdian Kepada Masyarakat Jurnal Pendidikan Matematika (JUDIKA EDUCATION) Riau Journal of Empowerment Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Jurnal Biosilampari: Jurnal Biologi JPBIO (Jurnal Pendidikan Biologi) Jurnal Biotek Kasuari: Physics Education Journal (KPEJ) Jurnal Kumparan Fisika JURNAL PENDIDIKAN MIPA Abdimas Universal Jurnal Biogenerasi Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Eduproxima : Jurnal Ilmiah Pendidikan IPA Agrinimal Jurnal Ilmu Ternak dan Tanaman Hydrogen: Jurnal Kependidikan Kimia Bioscientist : Jurnal Ilmiah Biologi Prima Abdika: Jurnal Pengabdian Masyarakat Jurnal Inovasi Penelitian dan Pengabdian Masyarakat Jurnal Pijar MIPA DIKSAINS : Jurnal Ilmiah Pendidikan Sains Al Jahiz: Journal of Biology Education Research Andromeda: Jurnal Pengabdian Masyarakat Rafflesia Jurnal Pendidikan MIPA Jurnal Biosilampari: Jurnal Biologi IJIS Edu : Indonesian Journal of Integrated Science Education
Nursaadah, Euis
Universitas Bengkulu
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Journal : Science and Technology Indonesia

 1 
Facile Detection of Oil Adulteration using UV-Visible Spectroscopy Coupled with Chemometrics Analysis Nina Gusti; Dinda Oktarina; Rina Elvia; Euis Nursa’adah; Rendy W Wardhana; Agus Sudaryono; M. Lutfi Firdaus
Science and Technology Indonesia Vol. 6 No. 1 (2021): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1587.291 KB) | DOI: 10.26554/sti.2021.6.1.14-18

Abstract

Engine and machine oils, better known as lubricant, is a fast-moving part within the motorcycle and automobile industries. Due to its high demand, these oils are often counterfeited by irresponsible people to get more profit. The thing most often done to adulterate oil is by mixing it with other low-quality or used oil. Here, we propose a simple analytical method to identify oil adulteration by using UV-Visible spectroscopy. A number of 425 genuine and adulterated oils were used as samples. After appropriate dilution using n-hexane, the samples were analyzed by UV-Visible spectrophotometer followed by Principle Component Analysis (PCA) and Principle Component Regression (PCR) as part of the chemometrics analysis. The results show that prediction samples were accurately classified into their corresponding groups with PCA scores of 49% and 27% for principal component 1 and 2, respectively. PLS model achieved a good prediction to detect lubricant oil adulteration, with R-Square of predicted and reference samples were 0.9257 and 0.9204, respectively. The proposed method shows a promising alternative to the conventional chemical method using a more sophisticated instruments such as GC-MS and HPLC for oil or other organic compound identification.
Colorimetric Sensing of Ascorbic Acid Using Cu-Phen MOFs and Subsequent Digital Image Analysis with Smartphone M. Lutfi Firdaus; Rizki M. Okumura; Euis Nursaadah; Dewi Handayani; Afrizal Mayub; Lena Rahmidar; Muhamad Diki Permana; Annisa Luthfiah; Santhy Wyantuti; Diana R. Eddy; Yeni Wahyuni Hartati
Science and Technology Indonesia Vol. 8 No. 4 (2023): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2023.8.4.660-665

Abstract

Vitamin C, also known as ascorbic acid, is a crucial nutrient involved in a number of enzymatic processes for tissue healing. Additionally serving as an antioxidant, ascorbic acid is crucial for keeping the immune system strong. It is essential to create a quantitative analytical approach to ascertain ascorbic acid concentration in many samples since its consumption from the daily food should be in the proper quantity. Here, we present a colorimetric probe made of synthetic metal-organic frameworks (MOFs) that changes its color only when samples containing ascorbic acid are present. In this study, phenanthroline served as an organic ligand or linker while copper served as the core metal that formed bonds with it. Cu-Phen MOF color fluctuations at 410 nm (from 408 nm to 412 nm) are linearly related to variations in light absorption. Moreover, as a substitute for spectrophotometry UV-visible, we have created a digital image-based colorimetry. The Cu-Phen MOFs’ color change has the maximum slope and linearity when the blue color intensity is used. The detection limit with high precision of 4.2% under ideal circumstances was 0.1 ppm. The established approach allowed for the exact and accurate assessment of ascorbic acid in genuine samples of star fruit (Averrhoa carambola L.).
Co-Authors A. Mudzakir A. Setiawan Abdul Rahim, Suzieleez Syrene Aceng Ruyani ACENG RUYANI Adi Putranto Afrizal Mayub Afrizal Mayub Agus Sudaryono Agustina, Resta Ahmad Aminudin Ahmad Mudzakir Alfia Novera Indah Esa Kasih Ananda, Resti Annisa Luthfiah Aprina Defianti ardana, Rendy Wikrama W Areski Febriani Ariefa Primair Yani Ariefa Primairyani Ariefa Primairyani Ariefa Primairyani, Ariefa Arsela Eko Listiono Asti, Nora Ayudi Athika Ulfah Putri Auriel Zahra Alisha Barke, H. D. BHAKTI KARYADI Bhakti Karyadi Bhakti Karyadi Bhakti Karyadi Budi Maryani Budiyanto Budiyanto Chairunisa, Aprilia Chandra, I Nyoman Defianti, Aprina Deka Agustina Deka Agustina Delima, Ega Marita Deni Parlindungan Detty Fitriani Devi Kurniawati Dewi Handayani Dewi, Ria Kemala Diah Suprihatin Diana R. Eddy Dinda Oktarina Ega Marita Delima Elsi Adelia Fitri Endang Widi Winarni Esterlin Fadhilah, Annisa Alya Fahmizal, F. Fahmizal, Fahmizal Fannyda, Raidatul Fenty Fitrian Sari Firdaus, Mochamad Lutfi Fitri April Yanti, Fitri April Ghina Febrianti gumono Hadirama, Khanna Handayani, Rinda Fitri Handini, Melda Nuari Harlita Henny Johan Henny Johan Henny Johan Herlina Apriska Imas Eva Wijayanti Indah Langitasari Indra Sakti Indra Sakti Intan Febrian Ira Maisarah Isriyanti Affifah, Isriyanti Iwan Setiawan Johan, H. Junaini, Junaini Karyadi , Bhakti Khairunnisa Khairunnisa Khamis, Noorzana Lazfihma, L Lazfihma, Lazfihma Lena Rahmidar Liliasari , Liliasari Liliasari Lilis Rusmiati, Lilis Lukmanul Hakim Lukmanul Hakim M. Lutfi Firdaus M. Lutfi Firdaus M. Lutfi Firdaus, M. Lutfi Marliansa, Meiredo Mayub, A. Mayub, Afrizal Mayub, Afrizal Mega Anggelena Mellyta Uliyandari Uliyandari Mochammad Lutfi Firdaus Mochammad Yusa, Mochammad Muhamad Diki Permana Muhammad Lutfi Firdaus Naftalia Artaria Hutabarat Nanda Cahaya Safitri Nensi Pitaloka Nina Gusti Nirwana Nirwana Nirwana, Nirwana Nurul Husna Parlindungan , Deni Parlindungan, Deni Pasaribu, Mika Yanti Arita Pathonawiratama, Gustin Primair Yani, Ariefa Ratu Eva Febriani Rendy W Wardhana Rendy Wikrama Wardana Rendy Wikrama Wardana Rina Elvia Rita Sartika Rizka Fitria Ningrum Rizki M. Okumura Sagita, Fitria Santhy Wyantuti Sari, Ega Dwi Permata Sari, Fenty Fitrian Sari, Frisa Rahmah Septika Amalia Umaro Shabrina, Annida Nurul Sipriyadi Sitorus, Jernia Rulintan Sitorus, Lizken Sonia, Gina Susanti Sutarno Sutarno Sutarno Sutarno Sutarno Sutarno Sutarno Syafriadin, Syafryadin Tanda Nauli Sitorban Tita Sunggarani Triana, Yorika Triyanti, Dwi Erni Tuherni, Erni Uliyandari, Mellyta Urip Santoso Wahyuningsih, Endah Tri Wainarisi, Esterlin Wardana, Rendy W. Wardana, Rendy Wikrama Wardaya, R. W. Widia Gusti Wikrama Wardana, Rendy Wiwit, Wiwit Yeni Wahyuni Hartati Yunita Yunita Yunita Yunita