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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.
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Articles 12 Documents
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Search results for , issue "Vol 6 No 1 (2021)" : 12 Documents clear
UTILIZATION OF ACTIVATED OF KEPOK BANANA PEEL POWDER (Musa paradisiaca L.) AS AN ADSORBENT OF CADMIUM METAL IONS (Cd2+) Malik, Abdilla; -, Alimuddin; Gunawan, Rahmat
JURNAL ATOMIK Vol 6 No 1 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Research on the adsorption of cadmium metal ions (Cd2+) using activated adsorbent from Kepok banana peel powder (Musa paradisiaca L.) has been carried out. Determination of the functional groups contained in the adsorbent used Fourier Transform Infrared Spectroscopy (FT-IR) instruments indicate the presence of O-H, C-O and N-H groups. Characterization of pores in the adsorbent using Scanning Electron Microscope (SEM) instruments that show the occurence of pore and cavity enlargement on the surface of the adsorbent, as well as the appearance of finer topography after the activation process. The result of this study indicate that the adsorbent of Kepok banana peel powder can absorb cadmium metal ions (Cd2+) with the best absorption occurs at optimum conditions pH 5, 60 minutes contact time and a concentration of 1.5 ppm. The adsorption capacity of the adsorbent of Kepok banana peel powder at the optimum conditions is 0.04991 mg/g.
PHYTOCHEMICAL SCREENING AND ANTIOXIDANT ACTIVITY TEST USING DPPH METHOD OF KLUWIH SEED (Artocarpus camansi Blanco) Sulistiawati, Iqlimah; Saleh, Chairul; -, Erwin
JURNAL ATOMIK Vol 6 No 1 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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Phytochemical screening and antioxidant activity test using DPPH method of Kluwih seed (Artocarpus camansi Blanco) have been done. Maceration of Kluwih seed was carried out using methanol. The phytochemical test showed A. camansi contains secondary metabolites including alkaloids, phenolics, flavonoids and steroids. Based on the result of the antioxidant test using the DPPH (1,1-diphenyl-2-picrylhydrazyl) method, the result exhibited that the crude extract had an IC50 value of 63.63 ppm.
ANALYSIS OF Ca(OH)2 ADDITION ON GADUNG TUBERS (Dioscorea hispida) USING VISIBLE SPECTROPHOTOMETER Prayuda, Adif; Panggabean, Aman Sentosa; -, Erwin
JURNAL ATOMIK Vol 6 No 1 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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Penelitian tentang penurunan kadar sianida dengan penambahan Ca(OH)2 pada umbi gadung (Dioscorea hispida) telah dilakukan. Percobaan ini dimaksudkan untuk mendapatkan data penurunan kadar sianida pada umbi gadung dengan cara penambahan Ca(OH)2, memvariasikan pH (keasaman) air rebusan dan lama rendaman umbi gadung. Hasil data ditentukan persentase penurunan kadar sianida pada umbi gadung menunjukkan bahwa perebusan dengan penambahan Ca(OH)2 10 % dan pH 12 diperoleh penurunan kadar sianida pada umbi gadung 18,2533 mg/L. Sianida yang tertinggal pada umbi gadung 5,6967 mg/L dan persentase penurunan 76,21 %. Lama waktu rendaman selama 60 jam diperoleh penurunan kadar sianida 23,1303 mg/L. Sianida yang tertinggal pada umbi gadung 0,8197 mg/L dan persentase penurunan 96,58 %. Kata Kunci : Umbi Gadung, Sianida, Ca(OH)2, Persentase Penurunan
PHYTOCHEMICAL TEST AND ANTIBACTERIAL ACTIVITY OF METHANOL EXTRACT OF Melicope lunu-ankenda (Gaertn.) T.G. Hartley STEM AGAINST Salmonella typhi AND Staphylococcus aureus Hermawan, Hermawan; Wirawan, Teguh; Pratiwi, Djihan Ryn
JURNAL ATOMIK Vol 6 No 1 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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Phytochemical test and antibacterial activity of methanol extract of Melicope lunu-ankenda (Gaertn.) T.G. Hartley have been done. The extraction of Melicope lunu-ankenda (Gaertn.) T.G. Hartley stem sample was carried out by the maceration method using methanol as a solvent. An antibacterial activity test was carried out using the agar diffusion method. Phytochemical tests results showed that methanol extract of Melicope lunu-ankenda (Gaertn.) T.G. Hartley stem has secondary metabolites including alkaloids, steroids, triterpenoids, and quinones. The antibacterial activity test results obtained MIC values for Salmonella typhi bacteria of 1.25% and for Staphylococcus aureus bacteria of 0.625%. Methanol extract of Melicope lunu-ankenda (Gaertn.) T.G. Hartley stem has broad-spectrum antibacterial activity.
DETERMINATION OF PARAMETER QUALITY OF GROUND WELL WATER USING ADSORBENT FILTER FROM RICE HUSK ASH Said, Yahya; -, Alimuddin; Gunawan, Rahmat
JURNAL ATOMIK Vol 6 No 1 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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Determining the parameters of the quality of well water in Mugirejo, Sungai Pinang, Samarinda, using an adsorption filter from rice husk ash, has been carried out. Determination of the optimum flow rate and the level of each water quality parameter BOD, TSS and levels of metals (Pb, Fe, Mn). Based on the results of the filtration process in well water samples showed that the effect of the flow rate obtained the optimum flow rate of 1 hour per liter against decreasing levels of BOD, TSS and levels of metals (Pb, Fe and Mn) of 8.1, 17.28 mg/L O2, 1.4 mg/L, 68 mg/L, ND (No Detection), 0.0012 µg/mL and 0 µg/mL. For the flow rate of ½ hour per liter against decreases in BOD, TSS and levels of metals (Pb, Fe and Mn) respectively at 8.0, 30.52 mg/L O2, 2.01 mg/L, 46 mg/L, 0 µg/mL, 0.0109 µg/mL and 0.021 µg/mL.
ISOLATION OF LIPASE PRODUCING BACTERIA FROM HOT SPRINGS OF LONG KALI Alawiyah, Dessy Noor; Astuti, Winni; Hairani, Rita
JURNAL ATOMIK Vol 6 No 1 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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Isolasi bakteri penghasil lipase dari sumber air panas Long Kali dilakukan dengan menyeleksi koloni bakteri pada media Nutrient Agar (NA) yang mengandung Rhodamin B dan minyak zaitun. Hasil isolasi menunjukkan 5 dari 14 isolat bakteri mampu menghasilkan lipase. lima isolat tersebut diuji aktivitas lipase dengan metode titrimetri, isolat dengan kode 14 memiliki aktivitas tertinggi dengan aktivitas 2,20 Unit/mL.
ISOLATION OF ENDOPHYTIC BACTERIA ON GINSENG JAWA LEAVES (Talinum triangulare (Jacq.) Willd) Nur, Istianti Irfa'a; Astuti, Winni; Kartika, Rudi
JURNAL ATOMIK Vol 6 No 1 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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Endophytic bacteria are bacteria that live in plant tissues. These bacteria produce extracellular enzymes, one of which is the lipase. This research was conducted to isolate the endophytic bacteria of Ginseng Jawa (Talinum triangulare (Jacq.) Willd) leaves which produced lipase and lipase screening from these bacteria. Isolation was carried out on nutrient agar (NA) media and screening of endophytic bacteria were carried out on nutrient agar (NA) media containing olive oil and Rhodamin B. Isolation results obtained by 5 single colonies and one colony of positive endophytic bacteria that produces lipase which characterized by the presence of orange-colored luminescence on the surface of the bacterial colony
ISOLATION OF ENDOPHYTIC BACTERIA FROM OKRA FRUIT (Abelmoschus esculentus L. Moench) Mikdariawan, Adha; Astuti, Winni; Marliana, Eva
JURNAL ATOMIK Vol 6 No 1 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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Endophytic bacteria is a bacteria that live in plant tissues without disrupt the plant's life cycle. This research aims to isolate endophytic bacteria from okra fruit (Abelmoschus esculentus L. Moench). Before isolation, okra fruit was sterilized by the outer surface with aquadest, 5.25% NaClO and 95% ethanol. The okra fruit sample is then cut and the inside of the okra fruit is cultured in a nutrient agar (NA). The results of this test indicate that there are endophytic bacteria that grow characterized by the presence of turbid areas around the sample. The results of isolation of endophytic bacteria using the method of stocking cup were obtained by 28 isolates of endophytic bacteria.
PHYTOCHEMICAL TEST AND ANTIBACTERIAL ACTIVITY FROM MERUNG LEAVES (Coptosapelta tomentosa) AGAINST Staphylococcus aureus AND Propionibacterium acnes BACTERIA Ulfa, Yulyanti Sartika; Kartika, Rudi; Saleh, Chairul
JURNAL ATOMIK Vol 6 No 1 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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Penelitian tentang uji fitokimia dan aktivitas antibakteri daun Merung (Coptosapelta tomentosa) terhadap bakteri Staphylococcus aureus dan Propionibacterium acne telah dilakukan. Penelitian ini berupa uji fitokimia dan uji aktivitas antibakteri dengan metode kertas cakram dari ekstrak kasar, fraksi metanol dan fraksi etil asetat pada daun merung (Coptosapelta tomemtosa). Hasil penelitian ini menunjukkan bahwa ekstrak kasar, fraksi metanol dan fraksi etil asetat mengandung senyawa metabolit sekunder dan pada uji aktivitas antibakteri dari ekstrak kasar, fraksi metanol dan fraksi etil asetat menunjukkan adanya aktivitas antibakteri terhadap bakteri Staphylococcus aureus dengan range MIC masing-masing sebesar 2,5% dengan diameter zona hambat 20 mm dan pada bakteri Propionibacterium acne tidak memiliki aktivitas antibakteri.
SYNTHESIS OF CHITOSAN-MAGNETITE NANOPARTICLES CROSS-LINKED TRIPOLYPHOSPHATE AS ANTIBACTERIAL Salmonella typhi AND Staphylococcus aureus Mahyati, Agus; Koesnarpadi, Soerja; -, Erwin
JURNAL ATOMIK Vol 6 No 1 (2021)
Publisher : Jurusan Kimia FMIPA UNMUL

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Magnetite is widely used in various fields of separation, biochemistry, medical and environment. Modification of nanoparticle magnetite binding with chitosan is recommended for many biomedical applications, especially as a drug delivery system because in addition to its non-toxic, biodegradable and biocompatible characteristics. Another advantage of biomedical benefits as antimicrobial is that it can increase antibacterial activity and has a more pronounced effect on gram-negative and gram-positive bacteria. Synthesis and characterization of chitosan-magnetite cross-linked tripolyphosphate as an antibacterial of S. typhi (Gram negative) and S. aureus (Gram positive) has been carried out. The phase of this research was initiated by the synthesis of FeSO4.7H2O and FeCl3.6H2O magnetite with a mass ratio of Fe (II): Fe (III) = 2: 3, using the co-precipitation method. In the second stage where the cross-linking of chitosan with TPP cross-linker to form ferrogel. In the third stage the synthesis of TPP-chitosan-magnetite in a ratio of 1: 4, with a slight addition of NH4OH as participant material. The results showed that FT-IR on TPP-chitosan-magnetite has a unique spectrum, XRD results showed the crystal structure of TPP-chitosan-magnetite did not change. Surface morphology shows that TPP-chitosan-magnetite is a spherical surface. Chitosan-Magnetite material has greater antibacterial activity than chitosan and magnetite bacteria S. typhi (Gram negative) and S. aureus (Gram positive).

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