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All Journal VALENSI CHEMISTRY PROGRESS PROSIDING SEMINAR KIMIA Jurnal Kimia Mulawarman Science and Technology Indonesia Indonesian Journal of Chemistry Jurnal Riset Teknologi Industri JURNAL KIMIA SAINTEK DAN PENDIDIKAN Molekul: Jurnal Ilmiah Kimia Jurnal Sains dan Kesehatan
Subur P Pasaribu
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics

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Journal : Jurnal Kimia Mulawarman

 1 
ISOLASI DAN IDENTIFIKASI SENYAWA FLAVONOID DARI DAUN TUMBUHAN KEREHAU (Callicarpa longifolia Lam.) Subur P Pasaribu; Erwin -; Putri Istiyanti
JURNAL KIMIA MULAWARMAN Vol 11 No 2 (2014)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

The flavonoid had been isolated from ethyl acetate extract of Kerehau leaf (Callicarpa longifolia Lam.). Extraction was done by maceration and fraction method. Isolation of pure compound was done by chromatographic flash coloumn. The resulted of isolated flavonoid was yellow greeness powder and 174-178°C melting point. Based on data IR can be conclude that isolated compound is flavonol group. Effect of toxicity from isolate identified with presentage of prawn larva (BSLT method) and counted by probit analysis (LC 50 ). The results of this test showed that the the isolate was very toxic with LC 50 value of 26,8824 ppm. Keywords: Kerehau (Callicarpa longifolia Lam.), Isolation, Flavonoid, BSLT
UJI FITOKIMIA, TOKSISITAS DAN AKTIVITAS ANTIBAKTERI TERHADAP EKSTRAK ETANOL DAUN RAMBUSA (Passiflora foetida L.) TERHADAP BAKTERI Staphylococcus aureus DAN Escherichia coli Noviyanti Y; Subur P Pasaribu; Daniel T
JURNAL KIMIA MULAWARMAN Vol 12 No 1 (2014)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Phytochemical tests were conducted, brine shrimp lethality test / BSLT and antibacterial activity test of the coarse extract and fractions from the Rambusa leaves (Passiflora foetida L.) derived from Samarinda, East Kalimantan. Rambusa leaf samples (Passifloa foetida L.) was extracted by ethanol, then concentrated using rotary evaporator. Then fractionated by using n-hexane and ethyl acetate solvent. According the test results, phytochemical compounds of secondary metabolites has contained alkaloids and steroidal compounds, triterpenoids. Within the antibacterial activity test using Staphylococcus aureus (Positive gram) and Escherichia coli (Negative Gram) using the discs method. This test using concentration in 1%, 5%, 10%, 15%, 20% resulted that the most active fraction is the fraction of n-hexane with minimum inhibitory rate was 1% and brine shrimp lethality test within concentration in 1000; 500; 250; 125; 62.5; 31.25; 15.625; 7,8125 ppm showing larval lethality of Artemia salina (L.) using SAS probit analysis to determine the value of Lethal Concentration 50% (LC 50 ). This test resulted that the most active fraction is the fraction of n-hexane with 133.7473 ppm of LC 50 values .Keywords : Passiflora foetida L. , phytochemical test , test antibacterial activity , bacterial and LC 50
ISOLASI DAN IDENTIFIKASI SENYAWA STEROID FRAKSI KLOROFORM DARI FRAKSINASI EKSTRAK METANOL DAUN KEREHAU (Callicarpa longifolia Lam.) Arie Novadiana; Erwin -; Subur P Pasaribu
JURNAL KIMIA MULAWARMAN Vol 12 No 1 (2014)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Kerehau (Callicarpa longifolia Lam.) is one of the biodiversity used as traditional medicine by one of the indigenous tribes of Borneo, called Dayak Tunjung. The purpose of this study was to determine about toxicity level of the Kerehau leaves (Callicarpa longifolia Lam.) to larvae shrimps (Artemia Salina Leach) and to determine the content of the active compounds contained in the Kerehau leaves (Callicarpa longifolia Lam.). The research was conducted by extracting samples with methanol and then concentrated by rotary evaporator. Total extract fractionated with n-hexane and chloroform, and then column chromatography applicated to chloroform fraction. Phytochemicals and BSLT have been test to Isolates chromatography results, total extract and chloroform extracts to determine the level of toxicity, FTIR analysis was also performed to isolate the results of Chromatography. Based on the results test of phytochemical compounds secondary metabolites of Kerehau leaves (Callicarpa longifolia Lam.) indicated that the methanol extract containing steroid compounds, phenolics, and flavonoids. Chloroform fractions containing flavonoids and steroid compounds. Isolates Chloroform fraction containing Steroids compounds. On Brine Shrimp Lethality Test, death of larvae shrimps (Artemia Salina Leach) were recorded and processed using SAS Probit analysis to determine the value of Lethal Concentration (LC50) to the value of each is, in chloroform isolates with LC50 values of 96.4096 ppm, chloroform extract had LC50 values of 104.1878 ppm and methanol extract had LC50 values of 485.1681 ppm. In Chloroform fraction separation and purification using column chromatography and recrystallization techniques to produce pure compound that is found in fractions A.f. The compounds were characterized by FTIR spectrometer spectroscopy. Based on FTIR analysis of the isolates showed chloroform fraction compound characterization using IR spectrophotometer is IR λmaks cm -1 : 3248.12; 2862.36; 2939.52; 2607.76; 2345.44; 1458.18;1496.76; 1597.06; 1172.72; 1226.73; 1288.45; 1658.78; 1095.57; 1002.98, and 941.26. Based on the results obtained isolates suspected compound is a steroid class of sterols.Keywords : Kerehau, Callicarpa longifolia Lam., toxicity test, Phytochemical test, chloroform, and Steroid
Sintesis Dialdehid Alginat Melalui Reaksi Oksidasi Natrium Alginat Dengan Natrium Metaperiodat Subur P Pasaribu; Jamaran Kaban; Mimpin Ginting; Kasmirul Ramlan Sinaga
JURNAL KIMIA MULAWARMAN Vol 14 No 2 (2017)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Synthesis of dialdehyde alginate has been done by oxidation reactions of sodium alginate with sodium metaperiodate (ratio of mol 1: 1). The formation of dialdehyde alginate as a result of oxidation are characterized by FT-IR spectroscopy with a peak absorption at 1627.92 cm-1, which is the vibration stretching C = O of functional groups from the aldehyde group resulting from the -OH group oxidation process, the absorption peak is changing its wavelength and intensity more sharply compared to initial sodium alginates. In addition, the C-O-C band (cyclic ether ) at 1033 cm-1 are reduced as a result of chains cleavage. The absorption peaks that appear at 794.67 cm-1 and 732.95 cm-1 are included in the bond CH which contributes to cleavage the bending C-C of oxidized sodium alginate.
PENGGUNAAN INTERNAL STANDAR NITROBENZENA UNTUK PENENTUAN KUANTITATIF BTEX DALAM KONDENSAT GAS ALAM DENGAN KROMATOGRAFI GAS Rohmat Hidayat; Subur P Pasaribu; Chairul Saleh
JURNAL KIMIA MULAWARMAN Vol 12 No 2 (2015)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

This research has been carried out the selection of three types of compounds to be used as an Internal Standard (ISTD) on the quantitative determination of BTEX in the natural gas condensate, they are pyridine and nitrobenzene marpholine that have the similar chemical compound with the analyte (aromatic hydrocarbons). The ISTD selection is done by mixing ISTD with natural gas condensate samples into the solvent carbon disulfide (CS 2 ), and then 1μl injected into the Gas Chromatography (GC) to know the column elution or separation of the mixture. From the results of research that have been conducted on three types compounds, it was found that pyridine can not be used as ISTD because it can not be eluted, as well marpholine CS 2 reacts rapidly with solvent to form a white solid before it is injected. While nitrobenzene mixtures eluted at a retention time of + 76.953 min after o-xylene. Next step is preparation ISTD nitrobenzene, BTEX standard solution and sample into the solvent CS2, based on the dilution of wight base usinganalytical balance, to obtain a concentration of ISTD in the same amount that is 4 g/g on BTEX standard solution and the sample. BTEX standard solution prepared with 6 variations concentrations of K 1 to K 6 that reflect the concentration of BTEX in the sample. From BTEX standard solution K1 to K6, all of them are injected into the gas chromatograph, then it is made the multi-level calibration curve by comparing the area ratios of analyte/ISTD vs concentration ratio of analyte/ISTD. The Quantitative determination of BTEX in the natural gas condensate is done by interpolating the regression equation obtained from the multi level calibration curve linearity for each aromatic BTEX compounds. The correlation coefficient (r) is obtained varies the 0.9993 to 0.9997. Other parameters such as precision and accuracy were also evaluated. So from this study is obtained BTEX concentrations in natural gas condensate with the ISTD nitrobenzene. They are Benzene is 3.0605 % wt; Toluene is 7.0053 % wt; Ethylbenzene is 0.8568 % wt, and ortho-meta-para-Xylenes are 2.8873 % wt; 0.8704 % wt ; 0.8026% wt.Keywords : ISTD, nitrobenzene, pyridine, marpholine, CS2, preparation, natural gas condensate, BTEX, gaschromatography.
UJI TOKSISITAS DAN AKTIVITAS ANTIBAKTERI BERBAGAI FRAKSI EKSTRAK DAUN TANAMAN KAMBOJA (Plumeria acuminate Ait.) Subur P Pasaribu; Wahidatul Nuriah; Erwin -
JURNAL KIMIA MULAWARMAN Vol 10 No 2 (2013)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Research about phytochemical, brine shrimp lethality and antibacterial activity tests in each fraction from kamboja leaves (Plumeria acuminate Ait.) from Loa Janan, East Kalimantan has been carried out. Plumeria acuminate Ait. leaves was extracted with ethanol and then concentrated by using rotary evaporator. The total extract was fractioned with n-hexane, and ethyl acetate. Based on the secondary metabolites phytochemical test of the Plumeria acuminate Ait. leaves show that total extract is contain alkaloid, steroid, and phenolic. n-hexane fraction is contain steroid. Ethyl acetate fraction is contain steroid. Ethanol-water fraction is contain alkaloid and phenolic. Brine shrimp lethality test exhibit mortality rate of Artemia salina (L) by Probit SAS analysis to determine lethal concentration 50% (LC 50 ) value. The test show that the most active was ethyl acetate fraction with LC 50 value of 44.7968 ppm. Antibacteria activity test of extracts for Staphylococcus aureus bacteria (positive Gram) and Escherichia coli (negative Gram) was carried out by paper disc method. The test showed that the most active were ethyl acetate fraction with minimum inhibitor consentration of 1.563% which clear zone diameter was 5.3 mm on Staphylococcus aureus bacteria and 6.3 mm on Escherichia coli bacteria.
Pembuatan Edible Film Yang Bersifat Antibakteri Dari Glukomanan Umbi Porang (Amorphophallus Muelleri) Yang Diinkorporasi Dengan Ekstrak Etanol Umbi Bawang Tiwai (Eleutherine Bulbosa (Mill.) Urb.) Anggun Ridha Avitri; Subur P Pasaribu; Winni Astuti
JURNAL KIMIA MULAWARMAN Vol 20 No 1 (2022)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v20i1.1073

Abstract

ABSTRAK Penelitian mengenai pembuatan edible film yang bersifat antibakteri dari glukomanan umbi Porang (Amorphophallus muelleri) yang diinkorporasi dengan ekstrak etanol umbi Bawang Tiwai (Eleutherine bulbosa (Mill.) Urb.) untuk mendapatkan formula edible film glukomanan umbi Porang dan ekstrak etanol umbi Bawang Tiwai yang memiliki aktivitas antibakteri terhadap bakteri Escherichia coli ATCC 25922 dan Staphylococcus aureus ATCC 25923 telah selesai dilakukan. Aktivitas antibakteri ekstrak etanol umbi Bawang Tiwai dilakukan dengan metode difusi agar dengan konsentrasi 2, 4, 6, dan 8% menunjukkan bahwa ekstrak etanol umbi Bawang Tiwai dengan konsentrasi 4% memiliki aktivitas antibakteri terhadap kedua bakteri masing-masing sebesar 13 mm dan 15,83 mm. Formula edible film yang mengandung glukomanan 6%, gliserol 25%, dan ekstrak etanol umbi Bawang Tiwai 4% menunjukkan aktivitas antibakteri terhadap bakteri Escherichia coli ATCC 25922 dan Staphylococcus aureus ATCC 25923 masing-masing sebesar 14,83 mm dan 16 mm.
PREPARATION OF FE-DOPED ZINC OXYSULFIDE (Fe-Zn(O,S)) WITH SURFACE DEFECT FOR HYDROGEN EVOLUTION REACTION Hardy Shuwanto; Jenni Lie; Hairus Abdullah; Subur P. Pasaribu
JURNAL KIMIA MULAWARMAN Vol 20 No 2 (2023)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v20i2.1108

Abstract

In this study, Fe-doped Zn(O,S) has been successfully fabricated by a one-step preparation process using chemical wet method. The Fe-doped Zn(O,S) photocatalysts were studied by varying the content of Fe dopant. The characterizations of Fe-doped Zn(O,S) were carried out by SEM and XRD analyses to determine the morphology and phase of samples. Furthermore, the optical and electrochemical properties were characterized through EIS, TPC, DRS and PL analyses. Briefly, Zn(O,S) with 5% Fe amount exhibited the most optimum condition as compared to other Fe amounts in which it showed better charge separation with the hydrogen evolution amount of 29000 mikromol/g in 10% EtOH solution. Lastly, the proposed mechanism is initially by the trapping of water molecules in the oxygen vacancy (defect) in Fe-Zn(O,S) sample followed by the reduction to generate hydrogen (H2) gas via the intermediate of proton (H+).
VERIFIKASI METODE PENENTUAN SULFUR DIOKSIDA (SO2) PADA SAMPEL UDARA AMBIEN DENGAN METODE PARAROSANILIN MENGGUNAKAN SPEKTROFOTOMETER UV-VISIBELE Anwar, Adliah; Pasaribu, Subur P.; Panggabean, Aman Sentosa
JURNAL KIMIA MULAWARMAN Vol 22 No 1 (2024)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v22i1.1119

Abstract

The research about verification method on determination of sulfur dioxide (SO2) on ambient air samples with the pararosaniline method using UV-Vis Spectrophotometer has been done. To obtain a valid measuring result, some important parameters of measurement on sulfur dioxide (SO2) in ambient air samples based on SNI 7119-7:2017. The results showed that the linearity of the measurement was very good as indicated by the correlation coefficient value was 0.9998. The limit of detection and limit of quantization was 2.7766 g/Nm3 and 7.4111 g/Nm3 respectively. The value of precision was good shown by %RSD < 2/3 CV Horwitz, and the accuracy of this method was good shown by a recovery percentage of 101.12%. Based on the results of this research, the pararosanilin method can be used to analyze sulfur dioxide (SO2) in ambient air samples with good results.
Penentuan Validasi Metode Analisa Kadar Tinbal (Pb) Pada Kosmetik Berbagai macam merek dengan menggunakan Spektrofotometer UV-Visible Putri, Amelia; Lianasari, Ika Yekti; Panggabean, Aman Sentosa; Pasaribu, Subur P.; Bohari, Bohari
JURNAL KIMIA MULAWARMAN Vol 22 No 2 (2025)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v22i2.1291

Abstract

Penelitian tentang validasi metode penentuan kadar timbal (Pb) pada kosmetik menggunakan spektrofotometer UV-Visible telah dilakukan. Validasi metode dilakukan dengan menentukan parameter validitas yang diuji antara lain yaitu uji linieritas dengan nilai koefisien korelasi sebesar 0,9998; limit deteksi 0,161 mg/L, limit kuantitasi 0,537 mg/L, uji akurasi diperoleh dengan persentase perolehan kembali yang memenuhi syarat keberterimaan yaitu 81,5-93,7% dan uji presisi untuk semua konsentrasi secara keseluruhan masih dapat diterima yaitu < 2%; serta nilai RSD yang diperoleh lebih kecil dari 2/3 CV Horwitz. Hasil analisis dari sembilan sampel diperoleh ada satu sampel yang tidak memenuhi syarat yaitu pada kode sampel B2 dengan kadar timbal sebesar 26,6 mg/kg, sehingga tidak aman untuk digunakan. Sedangkan untuk sampel lainnya masih dinyatakan aman karena memiliki kadar timbal dibawah baku mutu cemaran yang telah ditentukan BPOM yaitu ≤ 20 mg/kg.
Co-Authors Abdul Aziz Ade R. Fajaryantie Aman S. Panggabean Aman Sentosa Panggabean Andi Fatmawati Padri Hasanah Anggun Ridha Avitri Anggun Ridha Avitri Anwar, Adliah Arie Novadiana Arie Novadiana, Arie Az-zahraa, Mutiara Nur Bagus Muliawan Bohari Bohari Bohari Bohari Bonita Tahir Buchari Buchari Chairul Saleh Chairul Saleh Daniel Daniel Daniel Daniel T Daniel T, Daniel Djihan Ryn Pratiwi, Djihan Ryn Erwin - Erwin - Erwin Erwin Erwin Erwin Eva Marliana, Eva Fadilah Ramadhani Fahmi, Miraz’hul Farida Kristiana Febrianti, Irna Hairani, Rita Hairus Abdullah Hardy Shuwanto Ika Y. L. Sari Indra Masmur Irna Febrianti Jamaran Kaban Jenni Lie Josephine Josephine, Josephine Juntia Kirana Pratiwi Kasmirul Ramlan Sinaga Lianasari, Ika Yekti M. Bachri Amran Magdaleni, Agustina Rahayu Margaretta D. R. N. S Masmur, Hestina Mayang, Julia Agustin Mimpin Ginting Muhammad Robiansyah Nanang Tri Widodo Ningrum, Tika Setia Noviyanti Y Noviyanti Y, Noviyanti Nur, Nana Septiana Nurhasanah Nurhasanah Oktavia, Dwina Putri Putri Istiyanti Putri Istiyanti, Putri Putri, Amelia Rachmat, A. Khafifah Dwi Rico Ramadhan, Rico Ritson Purba, Ritson Rohmat Hidayat Rohmat Hidayat Rudi Kartika, Rudi Ruga, Ritbey Rumengan, Nur Khamillah Saibun Sitorus Shintia Alifah R Sujito Sujito Teguh Wirawan, Teguh Wahidatul Nuriah Winni Astuti Wirdhaningsih Wirdhaningsih Yusuf, Irfan Maulana Zia Rahmana Putra