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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
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Search results for , issue "Vol 6 No 1 (2021)" : 12 Documents clear
SYNTHESIS OF MALEIL ACETATE THROUGH ESTERIFICATION REACTIONS OF MALIC ACID USING ANHYDRATE ACETATE Muhammad Rifky Rizqullah; Daniel -; Eva Marliana
JURNAL ATOMIK Vol 6 No 1 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Research has been carried out on the synthesis of maleil acetate through esterification reactions of malic acid using anhydrate acetate. Esterification of malic acid was carried out with a ratio of anhydrate acetate 1:2 to produce maleil acetate with a yield of 72.08%. The formed maleil acetate then characterizes using the FT-IR instrument. The result of FT-IR analysis which will indicate that maleil acetate has formed is that the hydroxyl group from malic acid has been converted into an ester group from the esterification reaction. The wave number of the hydroxyl group of malic acid is 3448.72 cm-1 and the ester group is the result of an esterification reaction at wave number 1735.93 cm-1, indicating that maleil acetate has been formed.
PHYTOCHEMICAL TEST AND ANTIOXIDANT ACTIVITY TEST OF n-HEXANE FRACTION EXTRACT, ETHYL ACETATE AND REMAINED ETHANOL FROM LEAF OF SUNGKAI (Peronema canescens Jack.) USING DPPH METHOD Pindan, Neli Peni; -, Daniel; Saleh, Chairul; Magdaleni, Agustina Rahayu
JURNAL ATOMIK Vol 6 No 1 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Research on phytochemical test and antioxidant activity on sungkai leaf extract (Peronema Canescens Jack.) using DPPH (1,1-diphenyl-2-picrylhydrazyl). Phytochemical test result showed that secondary metabolites in crude extracts were alkaloids, flavonoids, phenolics, triterpenoids, steroids and saponins, secondary metabolites in n-hexane were flavonoids, triterpenoids and steroids, secondary metabolites ethyl acetate were alkaloids, triterpenoids and steroids and secondary metabolites in residual ethanol is alkaloids, flavonoids, phenolics and steroids. The IC50 values obtained in each crude extract, n-hexane, ethyl acetate and ethanol residue respectively: 29.549 ppm; 607.475 ppm; 12.986 ppm; 15.766 ppm. The highest level of antioxidant activity is in ethyl acetate fractions. Charaterization results with GC-MS obtained by alkanes, alkenes, alcohols and fatty acids.

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