cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Ajuk Sapar
Contact Email
ajuk.sapar@chemistry.untan.ac.id
Phone
+6281282990575
Journal Mail Official
anthoni.b.aritonang@chemistry.untan.ac.id
Editorial Address
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Tanjungpura University Jl. Prof. Dr. Hadari Nawawi, Pontianak, Kalimantan Barat, Indonesia
Location
Kota pontianak,
Kalimantan barat
INDONESIA
Indonesian Journal of Pure and Applied Chemistry
Published by Universitas Tanjungpura
ISSN : 26208571     EISSN : 2620858X     DOI : -
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology Chemistry
Indonesian Journal of Pure and Applied Chemistry (IJoPAC) was first established in 2018 as a scientific journal that accommodates researchers and education practitioners to publish scientific work and research results which are the results of experiments or literature studies in the field of chemistry. Publications are carried out periodically with three issues (January-April, May-August, September-December) in one volume per year. Published scientific work can be in the form of original articles, short communications and review results covering the fields of Physical chemistry, Organic chemistry, Analytical chemistry, Inorganic chemistry, Biochemistry / Biological Chemistry, Applied Chemistry. Focus and Scope of Indonesian Journal of Pure and Applied Chemistry covering the fields : Physical chemistry Organic chemistry Analytical chemistry Inorganic chemistry Biochemistry/Biological Chemistry Applied Chemistry
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol 4, No 2 (2021)" : 5 Documents clear
SENYAWA GOLONGAN STEROID DARI DAUN ADAM HAWA (Rhoeo discolor (L,Her.) Hance) DAN UJI SUN PROTECTING FACTOR STEROID COMPOUND FROM ADAM HAWA (Rhoeo discolor (L,Her.) Hance) LEAVES AND SUN PROTECTING FACTOR TEST Anggelita Anggelita; Endah Sayekti; Lia Destiarti
Indonesian Journal of Pure and Applied Chemistry Vol 4, No 2 (2021)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1037.747 KB) | DOI: 10.26418/indonesian.v4i2.47674

Abstract

The isolation of steroid compounds from Adam Hawa leaves has been carried out through maceration, partition, separation, and purification.  The relatively pure BF2 isolate was 7 mg amorphous and with a melting point of 158-1700C.  Results of 1H-NMR spectrum analysis with CDCl3 solvent, 500 MHz δH: 7,53 (d, J= 5,4 Hz, = C-H  ); 7,72 (d, J= 5,7 Hz, = C-H); 5,35 (1H, d, J=5,15 Hz, =C-H); 3,51 (1H, m, Ar-CH), 0,93 (d, J= 6,2 Hz, 3H), 0,86 (3H, s), 0,84 (3H, s), 0,81 (3H, m), 0,84 (d, J= 5,2 Hz, 3H). The 1H-NMR spectrum of isolate BF2 similar to the 1H-NMR spectrum of ergosterol peroxide and ergosterol. So it is predicted that BF2 isolate has resembled structures with those compounds. In vitro sunscreen tests were performed on BF2 isolates and methanol extracts using a UV-Vis spectrometer. The SPF values of BF2 isolate and methanol extract at concentrations (ppm) of 120, 140, 160 and 180 respectively were 1.913; 1,684; 2252; 2483; and also 1,428; 1,655; 2,465; 1883. The results showed that BF2 isolate and methanol extract had weak activity as sunscreen
SINTESIS TiO2 TERDOPING Bi3+ DAN UJI AKTIVITAS FOTOKATALISIS ANTIBAKTERI E.coli DENGAN BANTUAN SINAR TAMPAK (SYNTHESIS OF Bi3+ DOPED TiO2 AND PHOTOCATALYSIS ACTIVITY TEST OF E.coli ANTIBACTERIA UNDER VISIBLE IRRADIATION) Annisa Furqonita; Anthoni B. Aritonang; M. Agus Wibowo
Indonesian Journal of Pure and Applied Chemistry Vol 4, No 2 (2021)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (532.938 KB) | DOI: 10.26418/indonesian.v4i2.46976

Abstract

The synthesis of Bi3+ doped TiO2 was carried out using the sol-gel method with the precursor solution of titanium tetraisopropoxide (TTiP). Bi3+ cation dopant is done to reduce the energy of the TiO2 band gap so that it can be active in the visible light region. The synthesized Bi(III) –TiO2 photocatalyst was characterized using DRS UV-Vis, FTIR, and EDX. The results of the DRS UV-Vis analysis showed that 1% Bi(III) –TiO2 photocatalyst had a bandgap energy of 2.79 eV or equivalent to a wavelength of 469.97 nm. Infrared spectra show that there is a unique absorption at the wave number 956,56 cm-1 which is the absorption of the vibration Bi-O-Ti group. Photocatalyst Bi(III) -TiO2 was then tested for antibacterial activity against E. coli in polluted water. The activity test was carried out using the turbidimetric method by UV-vis spectrophotometry. The results of the activity test for 120 minutes with the help of visible light showed that the photocatalyst Bi(III) –TiO21% had the best antibacterial activity. The decrease in the number of E. coli in the water reached 48.54%.
TOWARD QUALITY CONTROL OF BIOGAS PRODUCT IN INDONESIA: AN OVERVIEW Oman Zuas; Eka Mardika Handayani; Muhammad Rizky Mulyana; Melati Azizka Fajria; Harry Budiman; Ayu Hindayani; Arfan Sindhu Tistomo; Anthoni Batahan Aritonang; Nazarudin Nazarudin
Indonesian Journal of Pure and Applied Chemistry Vol 4, No 2 (2021)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1024.15 KB) | DOI: 10.26418/indonesian.v4i2.47550

Abstract

The quality control of the final product of biogas is essential for providing a maximum level of consumer’s satisfaction. The most important criteria for any biogas product are its regulatory compliance and safety. Based on a desk study of document and laboratory experiment, this paper overviews the development of infrastructure of quality to control the quality of biogas, aiming at summarising the experience, problems and demonstrating development status of quality infrastructure in Indonesia in the hope of providing references for the present condition. The discussion is made to cover issues related to biogas that are emphasized on three pillars of the infrastructure of quality in Indonesia, i.e., standardization, metrology, and conformity assessment. From the overview, the critical conclusion where understanding and continuing the development quality infrastructure of assuring the safety and quality of biogas remain essential.
RETRACTED: PRODUKSI DAN KARAKTERISASI BIOCHAR AMPAS TEBU(Saccharum officinarum Linn) PRODUCTION AND CHARATERIZATION OF BAGASSE BIOCHAR (Saccharum officinarum Linn) Suparnawati Suparnawati; Harlia Harlia; Warsidah Warsidah; Anthoni Batahan Aritonang
Indonesian Journal of Pure and Applied Chemistry Vol 4, No 2 (2021)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1452.802 KB) | DOI: 10.26418/indonesian.v4i2.47817

Abstract

This article has been retracted: please see IJoPAC Policy on Article Retraction (https://jurnal.untan.ac.id/index.php/IJoPAC/pages/view/PUBLICATIONETHICS). This article has been retracted at the request of the Editor. One of the stages of submitting a paper by the author for publication is ensuring that the paper has never been published in another publication. The use of data from other articles without including the source of the citation is an abuse of the scientific publishing system. We apologize to our readers that this was not detected during the submission process.
PRESISI DAN AKURASI KROMATOGRAFI GAS DALAM PENETAPAN KADAR ASAM PROPIONAT DALAM PRODUKSI BAKERI (PRECISION AND ACCURACY OF GAS CHROMATOGRAPHY FOR DETERMINATION OF PROPIONIC ACID LEVELS IN BAKERY PRODUCT) Nasril Fuad Hasan; Warsidah Warsidah; Gusrizal Gusrizal
Indonesian Journal of Pure and Applied Chemistry Vol 4, No 2 (2021)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1311.02 KB) | DOI: 10.26418/indonesian.v4i2.45415

Abstract

Percission and accurate gas chromatographic method for determination of propionic acid in bakery products was developed. Bakery productswere directly extraction with ethyl acetat and phosphoric acid used for acidic. The extract was injected directly to gas chromatographic using butyric acid as internal standard. Calibration curve propionic acid range 25 – 1000 µg/mL. Coefissien of variation (CV) rates for spiked bakery produtcs were 1,36% and 99,81% (range 96,32 – 103,61%) for accuracy at ± 1000 mg/kg propionic acid, Limit detection (LoD) and limit quantitation (LoQ) by this method were 333,6537 mg/Kg and 635,5818 mg/Kg. Burger, hot dog, and sandwich buns from a local factory at Pontianak were analyzed and respectively rates less than the limit permitted by Indonesian regulations.

Page 1 of 1 | Total Record : 5

 1 

Filter by Year

2021 2021


Reset
Filter By Issues
All Issue Vol 8, No 3 (2025) Vol 8, No 2 (2025) Vol 8, No 1 (2025) Vol 7, No 3 (2024) Vol 7, No 2 (2024) Vol 7, No 1 (2024) Vol 6, No 3 (2023) Vol 6, No 2 (2023) Vol 6, No 1 (2023) Vol 5, No 3 (2022) Vol 5, No 2 (2022) Vol 5, No 1 (2022) Vol 4, No 3 (2021) Vol 4, No 2 (2021) Vol 4, No 1 (2021) Vol 3, No 3 (2020) Vol 3, No 2 (2020) Vol 3, No 1 (2020) Vol 2, No 3 (2019) Vol 2, No 2 (2019) Vol 2, No 1 (2019) Vol 1, No 3 (2018) Vol 1, No 2 (2018) Vol 1, No 1 (2018) More Issue