cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota samarinda,
Kalimantan timur
INDONESIA
JURNAL ATOMIK
Published by Universitas Mulawarman
ISSN : 25490052     EISSN : 25490052     DOI : -
Core Subject : Science, Social, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science
Jurnal Atomik (JA) is published twice a year (March and August) by Department of Chemistry, Faculty of Mathematics and Natural Sciences, Mulawarman University. Jurnal Atomik is a media for graduate students of Department of Chemistry to publish their research articles in Chemistry field including Analytical Chemistry, Inorganic Chemistry, Physical Chemistry, Organic Chemistry, and Biochemistry. The research articles that be submitted to Jurnal Atomik have to be approved by Editorial Board and in accordance with the rules of writing approved by Editor of Jurnal Atomik.
Arjuna Subject : -
Articles 12 Documents
 1   2 
Search results for , issue "Vol 6 No 2 (2021)" : 12 Documents clear
SINTESIS ASETIL ASKORBAT MELALUI ASETILASI TANPA PELARUT DAN KATALIS Nurhidayah, Annisa; Daniel, Daniel; Hiyahara, Irfan Ashari
JURNAL ATOMIK Vol 6 No 2 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRACT The preparation of acetyl ascorbate by acetylation without solvent and catalyst has been carried out. The preparation of acetyl ascorbate is carried out by reacting ascorbic acid with anhydrous acetic acid using a 1:1 mole ratio without solvent and catalyst. The acetylation reaction was carried out using the reflux method at 700C for 5 hours. The result of acetyl ascorbate acetylation is a yellow powder with a yield percentage of 71.8182%. The functional groups of the synthesized compound in the form of acetyl ascorbate were analyzed using a FT-IR spectrophotometer. The FT-IR analysis results show the functional groups OH, CH sp3, C=C, C=O ester and C-O-C ester. Based on these results it can be seen that acetyl ascorbate has been formed.
Daya Antibakteri Ekstrak Metanol Buah Okra (Abelmoschus esculentus (L.) Moench) puah, Siti Mar; Astuti, Winni; Hindryawati, Noor
JURNAL ATOMIK Vol 6 No 2 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRACT Phytochemical test and antibacterial activity of methanol extract of Okra (Abelmoschus esculentus (L.) Moench) fruit have been carried out. Extraction using maceration method. The methanol extract of Okra fruit contains phenolic secondary metabolites, alkaloids and steroids. Antibacterial activity opposes the agar diffusion method against the bacteria Salmonella typhi and Steprococcus mutans. The Minimum Inhibitory Concentration Value of Okra fruit methanol extract against Salmonella typhi bacteria at a concentration of 0.625-1.25% and against Streptococcus mutans bacteria 1.25% -2.5%. Okra fruit methanol extract has antibacterial activity with wide variations. Keywords : Abelmoschus esculentus (L.) Moench, antibacterial activity, secondary metabolites, Minimum Inhibitory Concentration (MIC).

Page 2 of 2 | Total Record : 12

 1   2 

Filter by Year

2021 2021


Reset
Filter By Issues
All Issue Vol 10 No 2 (2025) Vol 10 No 1 (2025) Vol 9 No 2 (2024) Vol 9 No 1 (2024) Vol 8 No 2 (2023) Vol 8 No 1 (2023) Vol 7 No 2 (2022) Vol 7 No 1 (2022) Vol 6 No 2 (2021) Vol 6 No 1 (2021) Vol 5 No 2 (2020) Vol 5 No 1 (2020) Vol 4 No 2 (2019) Vol 4 No 1 (2019) Vol 3 No 2 (2018) Vol 3 No 1 (2018) Vol 2 No 2 (2017) Vol 2 No 1 (2017) Vol 1 No 2 (2016) Vol 1 No 1 (2016) More Issue