Vol 9 No 3 (2023): December Edition

Articles

• Validasi Metode Analisis Iodin Secara Spektrofotometri UV-Vis pada Dua Variasi Pelarut Validation of The Method of Iodin Analysis by Uv-Vis Spectrofotometry with Two Variations of Solution

  Fauzi Abdilah, Karina Aulia Rahmawati, Widya Tresna Dewi, Keryanti, Mentik Hulupi

  204-211
• Ekstraksi Komponen Lipid dari Mikroalga Nannochloropsis oculata dan Nitzschia sp. dengan Metode Sokletasi dan Bligh Dyer Extraction of Lipid Components from Nannochloropsis oculata and Nitzschia sp. Microalgae with Soxhletation and Bligh Dyer Methods

  Jamius Bin Stepanus

  212-223
• The Effect of Solvent-to-Coffee Ratio on Caffeine Content in Ethyl Acetate Extracts of Arabica Gayo Coffee Beans

  Bambang Soeswanto, Rony Pasonang Sihombing, Joko Suryadi, Tri Hariyadi, Tifa Paramitha, Yusmardhany Yusuf, Alfiana Adhitasari -

  224-231
• Penurunan Logam Fe dan Co Pada Kerang Hijau (Perna viridis) dengan Metode Perendaman Larutan Belimbing Wuluh Reduction Fe and Co Metals in Green Mussels (Perna viridis) by Soaking in Starfruit Solution

  Holisha Widiyanto, Hafidz Al Asad, Sriwijayanti, Dian Susvira, Boima Situmeang

  232-240
• Comparison of Total Flavonoid, Phenolic Levels, and Antioxidant Activity between Robusta and Arabica Coffee

  Khoirul Ngibad, Siti Nur Husnul Yusmiati, Diana Mey Merlina, Yenny Puspa Rini, Valenata Valenata, Elok Faiqotul Jannah

  241-249
• Penggunaan Arang Aktif Ampas Kopi untuk Menurunkan Bilangan Peroksida dan Asam Lemak Bebas (ALB) pada Minyak Goreng Bekas Utilization of Activated Charcoal from Coffee Grounds to Reduce Peroxide Number and Free Fatty Acid (FFA) in Used Cooking Oil

  Prismawiryanti, Sophia Andarwati, Syamsuddin

  250-257
• Karakterisasi Pelet Pupuk Organik Berbahan Eco Enzyme Characterization Of Organic Fertilizer Pellets Eco enzyme

  Ima Winaningsih, Suramta Suramta, Yanti Mala

  258-265
• Studi Awal Sintesis ZnO/SiO2 dengan Silika dari Limbah Padat Geothermal dan Uji Performansinya dalam Penghilangan Metilen Biru Preliminary Study of ZnO/SiO2 Synthesis with Silica from Geothermal Solid Waste and Its Performance Test in Methylene Blue Removal

  Tifa Paramitha, Joko Suryadi, Rahma Ardelia Raissa, Teguh Aditya Nugraha, Nirmala Utami

  266-277
• Determination of Boron Concentration at Sausage Samples with Distillation of Ester Borane Method using Fluorescence Spectrophotometry

  Isna Lailatusholihah -, Aisyiah Restutiningsih Putri Utami, Micha Mahardika

  278-284
• Pembuatan dan Karakterisasi Kertas Kemasan Berbasis Ampas Kunyit dan Jahe Merah dengan Variasi Konsentrasi Natrium Hidroksida Preparation and Characterization of Packaging Paper Based on Turmeric and Red Ginger Pulp with Varying Concentrations of Sodium Hydroxide

  Devia Fataya Miftahul Jannah, Chyntia Wahyuni Febryanti, Diana Alfiah, Melina Rahma Huwaida, Della Agustia Marhani, Riniati Riniati

  285-294
• Total Metabolit Sekunder dan Uji Aktivitas Antioksidan Daun Juwet (Syzygium cumini L.) dengan Spektrofotometer Uv-Vis Total Secondary Metabolites and Test of Antioxidant Activity of Juwet Leaves (Syzygium cumini L.) with Uv-Vis Spectrophotometer

  Tien Wahyu Handayani Tien, Ni Kadek Evy Rasmiyanti, Joni Tandi, Magfirah

  295-304