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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 194 Documents
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PHYTOCHEMICAL TEST AND TOXICITY (Brine Shrimp Lethality Test) IN ETHANOL EXTRACT, ETHYL ACETATE FRACTION AND RESIDUAL ETHANOL FRACTION OF AJERAN LEAVES (Bidens pilosa L.) Audia, Nuraini Meti; -, Daniel; Marliana, Eva
JURNAL ATOMIK Vol 5 No 2 (2020)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Phytochemical test and toxicity in ethanol extract, ethyl acetate fraction and residual ethanol fraction of ajeran leaves (Bidens pilosa L.) has been done. The method used to determine secondary metabolites is clualitative test and the value of Lethal Concentration (LC50) with the Brine Shrimp Lethality Test (BSLT). Phytochemical test results showed that the ethanol extract and ethyl acetate fraction contained flavonoid, steroid and phenol compound. Residual ethanol fraction contained flavonoid and phenol compound. Toxicity test showed ethanol extract had LC50 value of 862.19 ppm. Ethyl acetate fraction has LC50 value of 8.26 ppm. Residual ethanol fraction had LC50 value of 275.24 ppm. The results of the toxicity test can be concluded that the ethyl acetate fraction very toxic category, ethanol extract and residual ethanol fraction included toxic category. The results that obtained from GC-MS characterization were steroid
DECREASE THE LEVEL OF LINEAR ALKYLBENZENE SULFONATE (LAS) WITH USING RICE HUSK ASH Hidayah, Amala Nur; -, Alimuddin; Subagyono, RR Dirgarini Julia Nurlianti
JURNAL ATOMIK Vol 5 No 1 (2020)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Penelitian tentang penurunan kadar linear alkylbenzene sulfonate (LAS) dalam limbah laundry menggunakan abu sekam padi telah dilakukan. Tujuan dari penelitian ini untuk mengetahui kinerja adsorpsi dari abu sekam padi dengan optimasi pH, berat, waktu kontak, konsentrasi dan kapasitas pada proses adsorpsi. Rendemen abu sekam padi yang diperoleh sebesar 28,58 %. Kondisi optimum penjerapan pada 2 mg/L linear alkylbenzene sulfonate (LAS) sebanyak 150 mL menggunakan 0,4 g abu sekam padi yaitu pada pH 5 dalam waktu 30 menit dengan kapasitas adsorpsi maksimum 3,894 mg/g. Hasil penurunan kadar LAS pada limbah laundry dari 1,8661 mg/L menjadi 0,465 mg/L ppm yaitu sebesar 75,013 %.
TEST OF AMYLASE INHIBITION ACTIVITY OF Melicope PLANTS WHICH POTENTIAL AS ANTIDIABETIC AGENTS Nurjanah, Siti; Marliana, Eva; Astuti, Winni
JURNAL ATOMIK Vol 5 No 2 (2020)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

The test of amylase inhibition activity of the leaves of Melicope lunu-ankenda and bark of Melicope glabra (BI.) T.G. Hartley extracts were done. The objective of this study was to determine in-vitro α-amylase inhibition activity against two samples by DNS method. The result showed that two samples of Melicope lunu-ankenda leaves and bark of Melicope glabra (BI.) TG Hartley displayed the enzyme inhibitory effect with percent inhibitions of 48.71% and 46.36%. Two sample extracts can inhibit amylase. It can be suggested that about sample were potential as antidiabetic agents.
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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Abstract

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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Abstract

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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Abstract

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

Page 12 of 20 | Total Record : 194

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