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Yulia Eka Putri
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Jurnal Kimia Unand
Published by Universitas Andalas
ISSN : 23033401     EISSN : 30262933     DOI : -
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology
Jurnal Kimia Unand has been registered with the number online ISSN: 3026-2933 and printed ISSN: 2303-3401. Jurnal Kimia Unand is a peer-reviewed journal published by the Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Andalas, Sumatera Barat, Indonesia. This journal is devoted to publishing original contributions on chemistry, applied chemistry, chemical engineering, and materials science, both theoretical and experimental studies. Among the research areas of interest are inorganic and organic, especially in developing materials with novel and/or valuable properties. Initially, J. Kim. Unand published articles in 2012, Volume 1. Number 1. November 2012 with a printed ISSN;2303-3401. This journal publishes 4 issues in 1 year and does not yet have an online journal system in the publishing process. This journal aims to publish the articles of undergraduate students of the Chemistry Department, Faculty of Mathematics and Natural Sciences, Andalas University, as one of the graduation requirements. In 2022, J. Kim. Unand initiated using OJS with an online ISSN, and the publishing frequency is two issues per year, in May and October. The criteria of the submitted article cover the following types of articles as follows: Communications. Research articles. Review articles. The scope of this journal includes: Organic synthesis and natural product chemistry Materials synthesis and characterization Synthesis of organic and inorganic compounds Theoretical and computational chemistry Fabrication, development, and validation of analytical methods Food and medicinal chemistry
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol. 12 No. 1 (2023): May 2023" : 5 Documents clear
Profil Fitokimia dan Penentuan Fenolik Total, Flavonoid Total, dan Uji Aktivitas Antioksidan Ekstrak Daun Sungkai (Peronema canescens Jack) dari Daerah Kota Padang Adlis Santoni; Mai Efdi; Fadhillah, Nurul
Jurnal Kimia Unand Vol. 12 No. 1 (2023): May 2023
Publisher : Departemen Kimia Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jku.12.1.1-6.2023

Abstract

Sungkai (Peronema canescens Jack) is a plant that is easy to find in Indonesia. Sungkai leaves are used by the community as herbal medicine to boost immunity. The purpose of this study was to determine the phytochemical profile, total phenolic content and total flavonoids and test the antioxidant activity of Sungkai leaf extract. Sungkai leaf extract was obtained by maceration method in stages. The results of the phytochemical screening showed that ethyl acetate extract and methanol extract contained phenolic and flavonoid compounds. Total phenolic test using the method Folin-Ciocalteu with the highest total phenolic content in methanol extract namely 172.75 mg GAE/g sample. Total flavonoid test using the AlCl3 method with the highest total flavonoid content in the ethyl acetate extract, namely 825.714 mg QE/g sample. Antioxidant activity test using the ABTS method with a very strong antioxidant activity in methanol extract with IC50 of 13.589 mg/L.
Isolasi dan Karakterisasi Senyawa Triterpenoid dari Ekstrak Etil Asetat Daun Salam (Syzygium polyanthum (Wight) Walp.) serta Uji Sitotoksik Menggunakan Metode BSLT (Brine Shrimp Lethality Test) Ferdinal, Norman; Muhamad Fadli; Rizki Septiardi; Adlis Santoni
Jurnal Kimia Unand Vol. 12 No. 1 (2023): May 2023
Publisher : Departemen Kimia Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jku.12.1.7-13.2023

Abstract

   The bay plant (Syzygium polyanthum (Wight) Walp.) is a member of the myrtaceae family. The most widely used part of the bay plant is the bay leaf. The leaves of this plant are often used as traditional medicine to treat gout, diarrhea, diabetes, and high blood pressure. This study aims to isolate and determine the characteristics of triterpenoid compounds from ethyl acetate extract of bay leaves. Isolation was carried out by column chromatography method with SGP (Step Gradient Polarity) elution system, then the isolated compound was purified by recrystallization method and obtained in the form of white crystals weighing 0.0188 g. TLC results showed a single purple spot after being treated with Liebermann Buschard reagent with a melting point range of 137-139 oC. The results of the UV spectrum data showed no conjugated double bonds and the results of the FTIR spectrum data showed the presence of hydroxyl groups, C-O alcohols, C-H alkanes, C=C alkenes, geminal dimethyl which are characteristic of triterpenoid compounds. Cytotoxic activity testing was carried out using the Brine Shrimp Lethality Test (BSLT) method.  Ethyl acetate extract and methanol extract had strong cytotoxic activity with LC50 values 316.23 mg/L and 234.42 mg/L respectively, while the hexane extract was weak with an LC50 value of 1148.15 mg/L.
Transpor Cd(II) Menggunakan Membran Cair Minyak Jagung Dengan Teknik Membran Cair Fasa Ruah Refinel; Olly Norita Tetra; Mega Silvia
Jurnal Kimia Unand Vol. 12 No. 1 (2023): May 2023
Publisher : Departemen Kimia Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jku.12.1.14-18.2023

Abstract

The transport of Cd(II) has been carried out by means of a bulk phase liquid membrane technique with vegetable oil as an environmentally friendly membrane phase. The transport process consisted of 65 mL of Cd(II) solution as the source phase, 50 mL of corn oil as the membrane phase and 120 mL of EDTA solution as the receiving phase. The experimental technique used a magnetic stirrer at a speed of 200 rpm with an equilibrium time of 15 minutes. The concentration of Cd(II) transported to the source and receiving phase was determined by Atomic Absorption Spectroscopy(AAS) at a wavelength of 228.63 nm. It was found that the optimum conditions for Cd(II) transport were at a concentration of 2.8 ppm with pH 6 as the source phase, EDTA concentration of 0.05 M with pH 4 as the receiving phase, stirring speed of 200 rpm, transport time of 120 minutes and equilibrium time of 15 minutes, the amount of Cd(II) transported to the receiving phase reached 19.37% while the remaining in the source phase was 38.54%.
Modifikasi Keramik Kerajinan Rakyat dengan Penambahan CaSO4, Pasir Besi, Abu Sekam Padi, dan Batu Kapur Zilfa, Z.; Vivi Sisca
Jurnal Kimia Unand Vol. 12 No. 1 (2023): May 2023
Publisher : Departemen Kimia Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jku.12.1.19-25.2023

Abstract

One of the ceramic home industries is ceramic making in Galogadang Batusangkar. This home industry uses the basic ingredients of clay mixed with water and then molded and burned, so the resulting ceramic products are less than perfect, hard, and brittle. According to the matter above, we wish to try to look for methods and modify the ceramics home industry by adding some clay that turns yellow and white, sulfate calcium (CaSO4), limestone, iron sand, and chaff ash. The process of ceramic consists of three phases that are pressing powder, drying, and burning. The analysis carried out is the compressive strength test, and SEM (Scanning Electron Microscopy) aims to observe the uniformity of the mixture of the ceramic. XRD (X-Ray Diffraction) determination was done to determine the crystal structure. The component analysis was measured with XRF (X-Ray fluorescence). From the research result, white clay is nicely made by ceramic materials if mixed with sulfate calcium (CaSO4), limestone, iron sand, and chaff ash.
Penentuan kandungan antioksidan dan fenolik total dari 5 spesies tumbuhan Famili Myrtaceae Yefrida; Isra, Hayatul; Refilda
Jurnal Kimia Unand Vol. 12 No. 1 (2023): May 2023
Publisher : Departemen Kimia Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jku.12.1.26-31.2023

Abstract

Plants that come from the Myrtaceae family are plants that are found in the tropics. These plants are widely used by the community as spices or medicinal ingredients. The research conducted aims to determine the antioxidant content and total phenolic content of 5 types of leaves of this plant. The total antioxidant content was determined using the MPM (Modified Phenanthroline Method) method while the total phenolic content was determined using the Folin-Ciocalteau method. Based on the research that has been done, it is found that the largest antioxidant content is found in the leaves of the Syzigium malaccence) plant 122.73 ± 3.10 mg AA/g DW while the largest total phenolic content is found in the leaves of the plant (Psidium guajava) 58.84 ± 1.86 mg GAE/g DW.

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