Articles

• Optimization of Extraction and Measurement Methods in the Determination of Total Iron (Fe) Content in Anti-Anemia Multivitamin Capsule Samples

  Rohmat Ismail,  Department of Chemistry, Faculty of Mathematics and Natural Sciences, IPB University Tanjung Street, IPB Dramaga Campus, Bogor, West Java, Indonesia,  Indonesia

  Manasye Erlangga,  Material Assurance and Quality Improvement Department, PT. Toyota Motor Manufacturing Indonesia Permata Raya Street, Toyota Karawang Plant 1, Karawang International Industrial City, Karawang, West Java, Indonesia,  Indonesia

  Irma Wahyuningtyas,  Forest Product Processing Program, Department of Environment and Forestry, Samarinda State Agricultural Polytechnic Samratulangi Street, Samarinda, East Borneo, Indonesia,  Indonesia

  Esti Prihatini,  Department of Forest Products, Faculty of Forestry and Environment, IPB University Ulin Street, IPB Dramaga Campus, Bogor, West Java, Indonesia,  Indonesia

  1-10

  DOI : https://doi.org/10.35508/jbk.v5i1.21161
  

  • pdf. English
• The Role of Problem-Based Worksheets in Enhancing Students’ Critical Thinking Skills

  Sudirman Sudirman,  Chemistry Education, Universitas Nusa Cendana, Adisucipto Street, Penfui, Kupang NTT, 85001, Indonesia.,  Indonesia

  Yusnaeni Yusnaeni,  Biology Education, Universitas Nusa Cendana, Adisucipto Street, Penfui, Kupang NTT, 85001, Indonesia.,  Indonesia

  11-17

  DOI : https://doi.org/10.35508/jbk.v5i1.20726
  

  • pdf. English
• Influence of Problem-Based Learning Models Improving Students’ Problem-Solving Skills

  Daud Dakabesi,  Chemistry Education, Universitas Nusa Cendana, Adisucipto Street, Penfui, Kupang NTT, 85001, Indonesia,  Indonesia

  18-27

  DOI : https://doi.org/10.35508/jbk.v5i1.21144
  

  • pdf. English
• The Antioxidant Activity of Ethanol Extract of Chinese Betel Leaf (Peperomia pellucida) using the DPPH Method with Potential as an Antidiabetic Agent

  Fahmi Sadik,  Department of Pharmaceutical Biology, Pharmacy Study Program, Faculty of Medicine and Health Sciences, Khairun University, Ternate,  Indonesia

  Mahgial Anwar,  Department of Pharmaceutical Biology, Pharmacy Study Program, Faculty of Medicine and Health Sciences, Khairun University, Ternate,  Indonesia

  Muh Nasir,  Department of Pharmaceutical Chemistry, Pharmacy Study Program, Faculty of Medicine and Health Sciences, Khairun University, Ternate,  Indonesia

  28-36

  DOI : https://doi.org/10.35508/jbk.v5i1.21159
  

  • pdf. English
• Comparison of Cellulose Extraction Methods from Lontar (Borassus flabellifer) and Salak (Salacca zalaacca) Fronds

  Aisyah Rusdin,  Department of Chemistry, Sipatokkong Mambo University, Bone,  Indonesia

  Rahmah Harun,  Department of Chemistry, Alauddin State Islamic University, Makassar, Gowa, Indonesia,  Indonesia

  Vivi Alfi Yunita,  Department of Chemistry, Alauddin State Islamic University, Makassar, Gowa,  Indonesia

  Awaluddin Awaluddin,  Department of Management, Syekh Yusuf Al-Makassari University, Gowa,  Indonesia

  37-45

  DOI : https://doi.org/10.35508/jbk.v5i1.21199
  

  • pdf. English
• The Effectiveness of Kahoot Media And e-LKPD In the Application of the Discovery Learning Model for Acid & Base Teaching In Improving Students' Learning Outcomes

  Natasya Christie Sihombing,  Department of Chemistry Education, Faculty of Mathematics and Natural Sciences, State University of Medan Willem Iskandar Pasar V street, Medan, Medan City, North Sumatra,  Indonesia

  Jasmidi Jasmidi,  Department of Chemistry Education, Faculty of Mathematics and Natural Sciences, State University of Medan Willem Iskandar Pasar V street, Medan, Medan City, North Sumatra,  Indonesia

  46-55

  DOI : https://doi.org/10.35508/jbk.v5i1.21155
  

  • pdf. English
• Microemulsion of methanol extract of Tridax procumbens flower and its antibacterial activity against Streptococcus mutans and Enterococcus faecalis

  Sri Wijayanti,  Department of Chemistry, Cilegon Chemical Analyst College, Banten,  Indonesia

  Agrin Febrian Pradana,  Department of Chemistry, Cilegon Chemical Analyst College, Banten,  Indonesia

  Boima Situmeang,  Department of Chemistry, Cilegon Chemical Analyst College, Banten,  Indonesia

  Dina Alva Prastiwi,  Department of Chemistry, Cilegon Chemical Analyst College, Banten,  Indonesia

  Weny J.A. Musa,  Department of Chemistry, Gorontalo State University, Gorontalo,  Indonesia

  56-61

  DOI : https://doi.org/10.35508/jbk.v5i1.21189
  

  • pdf. English
• Low-Temperature Synthesis of ZnO Nanoparticles Using a Water-Methanol Solvent for Rhodamine B Photodegradation

  Cindy Claudia Christanti,  Department of Chemistry, Faculty of Agriculture, Science, and Health, University of Timor, Kefamenanu,  Indonesia

  Didi Prasetyo Benu,  Department of Chemistry, Faculty of Agriculture, Science, and Health, University of Timor, Kefamenanu,  Indonesia

  62-69

  DOI : https://doi.org/10.35508/jbk.v5i1.21305
  

  • pdf. English
• The The Effect of Guided Inquiry Learning Model on Improving Students’ Learning Outcomes in the Periodic Table of Elements Material in Class X at SMA Negeri 1 Sidikalang

  Mariana Silitonga,  Department of Chemistry Education, Faculty of Mathematics and Natural Sciences, State University of Medan Willem Iskandar Pasar V street, Medan City, North Sumatra,  Indonesia

  70-79

  DOI : https://doi.org/10.35508/jbk.v5i1.21187
  

  • pdf. English
• Strategies and Solutions in Overcoming the Challenges of Lipase Utilization in Biodiesel Production: A Review

  Cindy Aulia,  Department of Chemistry, Faculty of Mathematics and Natural Sciences, Mulawarman University Jl. Barong Tongkok No. 4, Gn Kelua, Samarinda, East Kalimanta,  Indonesia

  Yuyun Krisdayanti Lase,  Department of Chemistry, Faculty of Mathematics and Natural Sciences, Mulawarman University Jl. Barong Tongkok No. 4, Gn Kelua, Samarinda, East Kalimantan,  Indonesia

  Lutfillah Dini Annisa,  Department of Chemistry, Faculty of Mathematics and Natural Sciences, Mulawarman University Jl. Barong Tongkok No. 4, Gn Kelua, Samarinda, East Kalimantan,  Indonesia

  Sauza Shafa Salsabila Putri,  Department of Chemistry, Faculty of Mathematics and Natural Sciences, Mulawarman University Jl. Barong Tongkok No. 4, Gn Kelua, Samarinda, East Kalimantan,  Indonesia

  Dhista Dwi Saputri,  Department of Chemistry, Faculty of Mathematics and Natural Sciences, Mulawarman University Jl. Barong Tongkok No. 4, Gn Kelua, Samarinda, East Kalimantan,  Indonesia

  Moh. Syaiful Arif,  Department of Chemistry, Faculty of Mathematics and Natural Sciences, Mulawarman University Jl. Barong Tongkok No. 4, Gn Kelua, Samarinda, East Kalimantan,  Indonesia

  Eva Syaiful Marliana,  Department of Chemistry, Faculty of Mathematics and Natural Sciences, Mulawarman University Jl. Barong Tongkok No. 4, Gn Kelua, Samarinda, East Kalimantan,  Indonesia

  80-91

  DOI : https://doi.org/10.35508/jbk.v5i1.21071
  

  • pdf. English