Journal Description

KOVALEN: Jurnal Riset Kimia is a peer-reviewed journal of chemistry that published by the Chemistry Department, Tadulako University, Indonesia. This journal concern with publishing the original research articles, review articles, and the current issues related to chemistry. Publishing frequency 3 issues per year, in April, August, and December. KOVALEN has been established since 2015 with volume 1 no 1 (December 2015).


ISSN: 2477-5398 (electronic)


The Scope of this journal including:
1. Theoretical and environmental chemistry study
2. Material and biomaterial synthesis, including their application 
3. Isolation, purification, and modification of the natural product
4. Development and validation of analytical methods
5. Isolation and application of enzyme

Vol. 6 No. 3 (2020): Edisi Desember

Published: Dec 30, 2020

Pengaruh Konsentrasi Surfaktan Non-Ionik Terhadap Viskositas Perekat Polivinil Asetat Berbasis Air

Effect of Non-Ionic Surfactant on Water-Based Adhesive Viscosity

165-170 Rony Pasonang Sihombing, Robby Sudarman, Agustinus Ngatin
Read Statistic: 60

Pengaruh Variasi Konsentrasi NaOH Terhadap Nilai Derajat Deasetilasi Kitosan dari Limbah Cangkang Kerang Hijau (Perna viridis L)

The Effect of NaOH Concentration on The Value of The Deacetylation Degree of Chitosan from Green Mussels Shell Waste (Perna viridis L)

171-176 Winda Trisna Wulandari, Nurzaman, Anindita Tri Kusuma Pratita, Keni Idacahyati
Read Statistic: 48

Konversi Karat Besi Menjadi Besi (III) Sulfat dan Pemanfaatannya Sebagai Adsorpsi Pewarna Tekstil

Iron Rust to Iron (III) Sulphate Conversion and the Utilization as Textile Dye Adsoption

177-183 Agustinus Ngatin, Fatimah, Widya Fitria Nur Fauziah, Rony Pasonang Sihombing
Read Statistic: 38

Karakterisasi Simplisia dan Uji Aktivitas Antioksidan Ekstrak dan Fraksi Daun Pidada Merah (Sonneratia caseolaris L)

Characterization and Evaluation of Antioxidant Activity of Red Pidada Leaves (Sonneratia caseolaris L)

184-190 Eka Siswanto Syamsul, Supomo, Siti Jubaidah
Read Statistic: 40

Mikroenkapsulasi Ekstrak Kulit Buah Naga Super Merah (Hylocereus costaricensis) pada Berbagai Massa Maltodekstrin dan Aplikasinya Sebagai Antioksidan

Microencapsulation of Super Red Dragon Fruit (Hylocereus costaricensis) in Various of Maltodextrin Mass and its Application as an Antioxidant

191-197 Sucianti, Nurhaeni, Jaya Hardi
Read Statistic: 28

Aktivitas Antioksidan Akar Bawang Merah Lokal Palu (Allium cepa Var Aggergatum L.) dengan Berbagai Kepolaran Pelarut

Antioxidant Activity of Local Shallot Roots (Allium cepa Var Aggregatum L.) in Palu City with Various Solvent

198-205 Nur Faidah, Nurhaeni, Ahmad Ridhay, Jusman, Abd. Rahman Razak; Syaiful Bahri
Read Statistic: 42

Sintesis Metil Ester Asam Lemak dari Biji Alpukat (Parsea americana Mill) Menggunakan Polimer Penyangga Katalis Berbahan Dasar Eugenol

Synthesis of Fatty Acid Methyl Ester from Avocado Seeds (Parsea americana Mill) using Polymer Support Catalyst Based on Eugenol

206-211 Sumarni, Erwin Abdul Rahim, Ni Ketut Sumarni, Ruslan, Hardi Ys.; Moh. Mirzan
Read Statistic: 25

Ekstraksi dan Uji Stabilitas Zat Warna Alami dari Bayam Merah (Alternanthera amoena Voss)

Extraction and Stabilization of Natural Dyes from Red Spinach (Alternanthera amoena Voss)

212-217 Khairuddin, Joy Noldy Baciang, Indriani, Nov Irmawati Inda
Read Statistic: 33

Analisis Formalin Secara Kualitatif pada Bakso dan Mie Basah di Kecamatan Sukarame, Wayhalim, dan Sukabumi

Qualitative Formaline Analysis on Meatball and Wet Noodle in Sukarame, Wayhalim, and Sukabumi

218-223 Riri Fauziyya, Anjar Hermadi Saputro
Read Statistic: 43

Pengaruh Kadar Air dan Kadar Asam Lemak Bebas Terhadap Masa Simpan Minyak Kelapa Mandar

The Influence of Water Content and Free Fatty Acid Content on Mandar Coconut Oil Shelf Life

224-229 Musafira, Dzulkifli, Fardinah, Nizar
Read Statistic: 42

Analisis Kualitatif dan Kuantitatif Metabolit Sekunder Ekstrak Biji Kelor (Moringa oleifera Lam.) dengan Metode Spektrofotometri UV-Vis

Qualitative and Quantitative Analysis of Secondary Metabolite of Moringa Seed Extract (Moringa oleifera Lam.) with UV-Vis Spectrophotometry Method

230-238 Tien Wahyu Handayani, Yulistien Yusuf, Joni Tandi
Read Statistic: 31

Uji Potensi Nefropati Diabetes Daun Sirih Merah (Piper croatum Ruiz & Pav) pada Tikus Putih Jantan (Rattus norvegicus)

Potential Test of Diabetes Nefropative of Red Betel Leaf (Piper croatum Ruiz & Pav) on Male White Rats (Rattus norvegicus)

239-251 Joni Tandi, Rizaldy Lalu, Magfirah, Yunlis Silintowe Kenta, Ronaldy Nobertson
Read Statistic: 38

Analisis Kadar Vitamin C Bawang Putih dan Hitam dengan Metode Spektrofotometri UV-Vis

Analysis of Vitamin C Levels of Garlic and Black Garlic by UV-Vis Spectrophotometric Method

252-261 Magfira Jurwita, M. Nasir, Abdul Gani Haji
Read Statistic: 30
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