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. 2 (2020): Edisi Agustus

Published: Sep 1, 2020

Karakterisasi Nanokomposit Poly(Lactic Acid)-Spent Bleaching Earth Regenerasi Termodifikasi

Characterization of Nanocomposite of Poly(Lactic Acid)-Modified Regenerated Spent Bleaching Earth

90-98 Tika Paramitha, Johnner P. Sitompul
Read Statistic: 37

Retensi Ekstrak Karoten pada Olahan Mie Wortel (Daucus carrota L.)

Retention of Carotene Extract on Carrot (Daucus carrota L.) Noodles

99-105 Putri Wahyuni, Ni Ketut Sumarni, Prismawiryanti, Jaya Hardi
Read Statistic: 31

Kinerja Elektroda Platina Terlapis Enzim Butirilkholinesterase-Selulosa Asetat-Glutaraldehida untuk Deteksi Diazinon

Performance of Platina Electrode Coated by Butyrylcholinesterase-Cellulose Acetate-Glutaraldehyde for Diazinon Detection

106-111 Thamrin Azis, Nurhaeni, Caterina Bijang, A. Nurwahida
Read Statistic: 39

Perubahan Bilangan Peroksida pada Blending VCO-Ekstrak Likopen Buah Tomat Berdasarkan Perbandingan Rasio dan Lama Penyimpanan

Peroxide Value Changes on Blending of VCO and Extract of Tomato Lycopene Based on Ratio Comparison and Storage Time

112-117 Muqasyifah, Nurhaeni, Syamsuddin, Khairuddin
Read Statistic: 21

Penurunan Kadar Asam dalam Kopi Robusta (Coffea canephora) dari Desa Rantebua Kabupaten Toraja Utara dengan Teknik Pemanasan

Reduce Acid Levels in Robusta Coffee (Coffea canephora) from Rantebua Village, North Toraja District by Heating Techniques

118-125 Syahruddin Kasim, Syarifuddin Liong, Ruslan, Alprianto Lullung
Read Statistic: 28

Sintesis Nanopartikel Perak Menggunakan Ekstrak Daun Eceng Gondok (Eichornia crassipes) Sebagai Bioreduktor

Synthesis of Silver Nanoparticles Using Leaves Extract of Water Hyacinth (Eichornia crassipes) As a Bioreductor

126-133 Syahruddin Kasim, Paulina Taba, Ruslan, Romi Anto
Read Statistic: 27

Aktivitas Antioksidan Likopen Buah Tomat (Solanum lycopersicum L.) Terblending dalam Minyak Padat Ikan Lele (Clarias sp)

Antioxidant Activity of Lycopene from Tomato (Solanum lycopersicum L.) Blended Into Frying Fat from Catfish Oil (Clarias sp)

134-142 Eka Surya Wahyuningsih, Syamsuddin, Prismawiryanti; Dwi Juli Pusptasari
Read Statistic: 33

Uji Potensi Metabolit Sekunder Ekstrak Kulit Buah Petai (Parkia speciosa Hassk) terhadap Kadar Kreatinin dan Ureum Tikus Secara Spektrofotometri UV-Vis

Potential Test of Secondary Metabolites Extract of Petai Fruit Peel (Parkia speciosa Hassk) on Creatinine and Ureum Levels of Rats by UV-Vis Spectrophotometry

143-151 Joni Tandi, Heru Khairul Muttaqin, Kiki Rizki Handayani, Sri Mulyani, Recky Patala
Read Statistic: 36

Studi Perbandingan Aktivitas Antioksidan Xantofil dan Karoten Kapang Oncm Merah pada Berbagai Waktu Inkubasi

Comparison Study of Antioxidant Activity of Xanthophyll and Carotene from Red Oncom Mold In Various Incubation Times

152-157 Sriwulan Indriani Pea, Khairuddin, Prismawiryanti
Read Statistic: 23

Analisis Kadar Glukomanan Dari Biji Durian (Durio zeibethinus Murr) dengan Metode Spektrofotometri pada Berbagai Waktu dan Suhu Hidrolisis

Analysis of Glucomannan Content From Durian Seeds (Durio zeibethinus Murr) Using Spectrophotometry Methods in Several Hydrolysis Times and Temperatures

158-164 Darmawati Darmawati, Syaiful Bahri, Husain Sosidi
Read Statistic: 25
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