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Jurnal Periodic Jurusan Kimia UNP

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Published by Universitas Negeri Padang

ISSN : - EISSN : 23391197 DOI : https://doi.org/10.24036/p.v11i2.113715

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology

Periodic adalah jurnal nasional yang berisi artikel-artikel bidang ilmu kimia, seperti bidang Kimia Analitik, Kimia Fisika, Kimia Anorganik, Kimia Organik dan Biokimia. Jurnal ini mempublikasikan hasil penelitian original, komunikasi singkat, dan artikel review. Artikel yang telah diterbitkan dalam jurnal ini berarti bahwa kegiatan penelitian yang diterbitkan adalah belum, dan tidak akan diterbitkan di tempat lain. Periodic (e-ISSN 2339-1197) diterbitkan oleh Jurusan Kimia dan mulai tahun 2022 disebut Departemen Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Padang, Indonesia. Periodic terbit berdasarkan berdasarkan surat edaran Direktorat Jenderal Pendidikan Tinggi No. 152/E/T/2012 tentang publikasi karya tulis ilmiah dan terbit sejak Oktober 2012.

Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)

Articles 343 Documents

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Ekstraksi dan Karakterisasi Betasianin dari Kulit Buah Naga Merah (Hylocereus sp.) Rendi Ananda; Minda Azhar
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Betacyanin is a water-soluble pigmentation compound found in the skin of red dragon fruit. Betacyanin extraction aims to determine the functional group and its maximum wavelength using FTIR and UV-Vis spectrophotometers, respectively. Extraction of betacyanin from dragon fruit peel using ethanol and water in a 1:1 ratio with a stirring speed of 900 rpm for 16 hours. Characterization of betacyanin using FTIR showed betacyanin has an amine group or bond (N-H) derived from betalamic acid which is typical at wave numbers 1798-1607 cm-1. At a wave number of 1486 cm-1 , it shows the presence of C=C strain vibrations from the aromatic ring. Betacyanin characterization using UV-Vis spectrophotometer showed a maximum wavelength of 530 nm.

Kelarutan Zat Warna Organik dalam Gelasi Mikroemulsi Water In Oil dari Sistem Air, Surfaktan Nonionik (Brij 35) dan Pentanol Hanny Sri Asih; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Research on solubility from organic pigments of turmeric (Curcuma longa Linn) and telang flower (Clitoria ternatea L.) in water-in-oil microemulsion gelation on system of water, nonionic surfactant (Brij 35) and pentanol has been studied. The purpose of this research was the preparation of water-in-oil microemulsion gelation, determines solubility, density, and bias index of organic pigments in water-in-oil microemulsion gelation on system of water, nonionic surfactant (Brij 35) and pentanol. The method used is the sol-gel method. The solubility in water-in-oil microemulsion gelation of turmeric is 2,41832% (pH 4,5) and 2,61402% (pH 9,5) and telang flower is 1,21274% (pH 4,5) and 1,6136% (pH 9,5). The bias index of turmeric is 1,4024 (pH 4.5) and 1,4034 (pH 9,5) and telang flower is 1,4004 (pH air 4,5) and 1,4014 (pH 9,5).The density of turmeric is 0,88778g/cm3 (pH 4,5) and 0,88912g/cm3 (pH 9,5) and telang flower is 0,8793g/cm3 (pH 4,5) and 0,8872g/cm3 (pH 9,5).

Degradasi Asam Humat Pada Air Rawa Gambut menggunakan Metode Fotosonolisis dengan Bantuan Katalis ZnO Alfindri Zulkarnaini; Hary Sanjaya; Yohandri Yohandri; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Photosonolysis method can be used to degrade humic acid in peat swamp water with the help of ZnO catalyst. This study aims to determine the effect of time variation and catalyst variation on peat swamp degradation. UV-Vis spectrophotometer was used to calculate the absorbance concentration of peat swamp air before and before degradation. The results showed that the highest percentage of peat swamp water degradation was 26.81% at 120 minutes using a ZnO catalyst. The highest degradation of peat swamp water was at 21.99% with a mass catalyst of 0.3 grams of ZnO

Sintesis dan Karakterisasi Senyawa C-Vanillin Kaliks[4]Resorsinarena (CVKR) Sebagai Adsorben Zat Warna Metanil Yellow Andriati Fitria Wati; Sri Benti Etika
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 2 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Pollution caused by industrial waste is a problem for people's lives, one of which is water pollution by dyes. The nature of this synthetic dye is difficult to degrade, so it requires an alternative method to be able to degrade the dye. The compound C-Vaniline Kalix[4]Resorcinarene (CVKR) has great potential to be developed as an adsorbent for dye absorption. This study aims to determine the potential of C-Vanillin Kaliks [4] resorcinnarene (CVKR) as an adsorbent for the absorption of methanyl yellow dye using optimum condition parameters which are estimated to affect the methanyl yellow absorption process. The CVKR obtained was in the form of a peach colored powder solid of 0.833 grams. The results of characterization with FTIR showed absorption peaks at wave numbers 3355.12 cm-1 (OH), 1508.14 cm-1 (C=C benzene) and 1141.58 cm-1 (CO), the results of UV-Vis measurements showed the presence of absorption of conjugated dienes at a wavelength of 299 nm with an absorbance of 3.5582 A and CVKR has a melting point of 3800 C. Analysis of the absorption of methanol yellow by CVKR under optimal conditions occurred at pH 5, concentration 250 mg/L, optimum contact time 90 minutes and stirring speed 200 rpm . Adsorption tends to follow the Langmuir isotherm pattern with a determinant value of 0.9175. The precision test value (% RSD) of methanyl yellow was 1.3361%. The LOD and LOQ values in the analytical method used were 0.27568233 mg/L and 0.91894118 mg/L.

Optimasi Penyerapan Malachite Green Menggunakan C-Sinamalkaliks[4]Resorsinarena Hasil Sintesis Sebagai Adsorben Dewi Fortuna Khairil; Sri Benti Etika
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 2 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Malachite green is a synthetic dye that is widely used in the textile industry. Textile industry waste that is not treated properly can cause pollution of the aquatic environment. The threshold value for the permissible concentration of malachite green in the water is 0,01 ppm. The adsorption method is one of the alternative method used to remove dye waste. This study used the batch method which aims to determine the optimum absorption conditions and maximum absorption capacity of malachite green using CSKR. In this study, treatment was carried out using variations in pH and concentration. The results of this study obtained that the optimum absorption capacity occurred at pH 3 and a concentration of 200 mg/L. This CSKR can be used in the absorption of malachite green dye.

Kelarutan Zat Warna Organik dalam Gelasi Mikroemulsi Water In Oil Sistem Air, Surfaktan Nonionik Tween 60 dan Sikloheksana Aulia Rahmi; Hary Sanjaya; Fitri Amelia; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 2 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Organic dyes can be dissolved in the gelation of water in oil (w/o) microemulsion of the system of water (pH=4,5 and pH=9,5), nonionic surfactan tween 60 and cyclohexane. The purpose of this study was to prepare microemulsion gels using the sol-gel method, determine the solubility of organic dyes (turmeric and telang flower) in gelation, determine the value of density, refractive index of organic dyes in gelation microemultion (w/o) of the system of water, nonionic surfactan tween 60 and cyclohexane. Gel preparation was carried out using the sol-gel method at a temperature low using TEOS and ethanol which is hidrolyzed with water to form gel. Tetra ethyl ortho silicate which is added 1: 8 mol comparison to the amount of water in microemilsion of water in oil. Determination of value of the refractive index in this study using an ABBE refractometer. The result showed that the solubility of dye organic matter from turmeric and telang flower was 1,376% and 0,498% at pH 4,5 and 1,292% and 0,468% at pH 9,5. The density can be seen by the density test with the result of greatest density density is tumeric 0,87744 g/cm3 at pH 4,5 and 0,86836 g/cm3 at pH 9,5. Then measure the refractive index value, namely turmeric 1,4154 at pH 4,5 and 1,4274 at pH 9,5.

Kelarutan Zat Warna Organik Dalam Gelasi Mikroemulsi Water In Oil Sistem Air, Surfaktan Kationik (Hexadecyl Trimethyl Ammonium Bromide) dan Pentanol Pamela Jurdilla; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Research on the solubility of organic dyes in gelation microemulsion water in oil (w/o) water system, cationic surfactant (Hexadecyl Trimethyl Ammonium Bromide) and pentanol aims to prepare gels from microemulsion (w/o) using the sol-gel method by adding TEOS and ethanol in a ratio of 1:8 mol which hydrolyzed with water to form a gel, the percentage of organic dye solubility of turmeric powder at pH 4,5 and 9,5 3,92% and 3,95% then dragon fruit peel powders 1,96% and 1,93% at pH 4,5 and 9,5. Respectively, density testing can be carried out to see the concentration of the dye with greatest value that is turmeric powder 0,8677 g/cm3 and 0,8684 g/cm3 for pH 4,5 dan 9,5. Measurement of refractive index to see the homogeneity of the largest solution is turmeric at pH 4,5 and 9,5 namely 1,4014 and 1,4024.

Pengujian Senyawa C-Sinamalkaliks[4]Resorsinarena Hasil Sintesis Dari Limbah Minyak Kayu Manis (Cinnamomum Burmanii) Sebagai Antioksidan Susiyati Safitri; Sri Benti Etika
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 2 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

C-Sinamalkaliks[4]resorcinarene is the result of the reaction of cinnamaldehyde and resorcinol compounds derived from cinnamon oil waste which has four alkenyl groups (double bonds), eight hydroxyl groups, and twelve benzene residues so that it can be used as an antioxidant because it has an OH group. The purpose of this study was to determine the IC50 value and antioxidant activity of C-Sinamalkalix[4]resorcinarene using the DPPH method (2,2-Diphenyl-1-picrylhydrazyl) and the ABTS method (2,2'-azino-bis(3-ethylbenz). -thiazoline-6-sulfonic acid Test results of antioxidant activity on the compound C-Sinamalkaliks[4]resorcinarene using the DPPH method (2,2-Diphenyl-1-picrylhydrazyl) using a UV-Vis spectrophotometer at a maximum wavelength of 514 nm. IC50 of 161.1750 ppm with moderate antioxidant activity Testing the antioxidant activity of the compound C-Sinamalkaliks[4]resorcinarene using the ABTS method (2,2'-azino-bis(3-ethylbenz-thiazoline-6-sulfonic acid) using UV spectrophotometer-Vis is at a maximum wavelength of 750 nm, IC50 value is 2.9661 ppm with very strong antioxidant activity.

Effect of Hexane Addition on Mesoporous Silica Crystal Size Using Na2SiO3 from Chert Stone Pera Meilita; Syamsi Aini; Fajriah Azra; Rahadian Zainul
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 2 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Mesoporous silica is a silica solid with pores between 2-50 nm which can be used in the fields of adsorption, medicine, catalyst synthesis, material purification and stationary phase for chromatography. Mesoporous silica is generally synthesized using TEOS or TMOS, but these precursors are relatively expensive. Na2SiO3 is a precursor of mesoporous silica which is more economical and easy to obtain. Basic materials that contain a lot of silica such as chert can be synthesized into Na2SiO3. Mesoporous silica synthesis generally uses surfactants as templates for the polymerization of silica, therefore a cosolvent is needed that can act as a crystal size enlarger by interacting with surfactants. The purpose of this study was to determine the effect of the addition of hexane on the synthesis of mesoporous silica symbolized by SM and SMH5. Mesoporous silica was synthesized using the sol-gel method with the basic ingredients of Na2SiO3 from chert, P104 as a surfactant, HCl as a solvent and n-hexane as an additive to increase crystal size. Mesoporous silica was characterized using XRD. The results of measurements using XRD showed that the X-ray difragtogram pattern showed peaks at an angle of 2ϴ = 22.29o and 25.33o for SM and SMH5 products, respectively.

EKSTRAKSI DAN KARAKTERISASI KATEKIN DARI GAMBIR (Uncaria gambir roxb) Isriza Mahendra; Minda Azhar
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Gambir is the result of extraction from the gambier plant (Uncaria gambir roxb) where this plant contains polyphenolic compounds, namely catechins. Catechins are classified as flavanol compounds (flavon-3-ol) and are antioxidant compounds. The aim of the study was to determine the characteristics of the catechins extracted from gambier.Characterization of extracted catechins using FTIR showed characteristic absorption areas for the OH group at the peak of 3000-3700 cm-1 (3307), the C=C group around 1600 cm-1 (1607), and the CO group (1150-1010 cm-1) ( 1017). Characterization of extracted catechins using UV-Vis Spectrophotometer has a maximum wavelength of 290 nm. These characteristics are very similar to standard catechins.

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Contact Name
Budhi Oktavia

Contact Email
budhioktavia@fmipa.unp.ac.id

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periodic@fmipa.unp.ac.id

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Departemen Kimia, FMIPA, UNP Jalan Prof. Dr. Hamka, Air Tawar, Padang, Sumatera Barat

Location
Kota padang,

Sumatera barat

INDONESIA