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NOOR HUBDRYAWATI
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Jurnal Kimia Mulawarman
Published by Universitas Mulawarman
ISSN : 16935616     EISSN : 24769258     DOI : DOI: https://doi.org/10.30872/jkm
Core Subject : Science,
Chemistry
Journal of Kimia Mulawarman is a peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of chemistry, including educational chemistry and applied chemistry.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 224 Documents
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ISOLATION OF STEROID COMPOUNDS IN THE n-HEKSANA FRACTION FROM JARUM TUJUH BILAH LEAVES EXTRACT (Leuenbergeria bleo (Kunth) D.C.) Yuli Yana; Chairul Saleh; Noor Hindryawati
JURNAL KIMIA MULAWARMAN Vol 17 No 1 (2019)
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.v17i1.904

Abstract

This study aims to find secondary metabolites isolated from the leaves of the Jarum Tujuh Bilah (Leuenbergeria bleo (Kunth) D.C.). The method used was maceration, fractionation and column chromatography and was identified using Fourier Transformra Infra Red (FT-IR). The phytochemical preliminary test of the n-hexane fraction contains the steroid secondary metabolite compound. The results of column chromatography produced 75 vial bottles which were then identified by thin layer chromatography and produced 8 combined fractions (A-H fraction) based on the similarity of characterization, from the 8 fractions D and E forming yellow crystals. The yellow crystals formed are then cleaned and recrystallized to produce 11.7 mg white amorphous crystals. Compounds are characterized by FTIR spectrometers. Based on FTIR analysis, isolates showed IR spectrum λ max cm-1: 3375; 2927,98; 2852,18; 1680; 1462,51; 1376.81; 1329.74; 1043,92; 1022.02 and 956.27. Based on the results obtained by isolates, it is suspected that the compound is a steroid sterol.
UJI FITOKIMIA DAN AKTIVITAS ANTIBAKTERI EKSTRAK KASAR ETANOL, FRAKSI n-HEKSANA, ETIL ASETAT DAN METANOL DARI BUAH LABU AIR (Lagenari siceraria (Molina) Standl) Eva Marliana; Chairul salaeh
JURNAL KIMIA MULAWARMAN Vol 8 No 2 (2011)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Phytochemical test and Antibacterial Activity test in each fraction of the gourds fruit (Lagenari siceraria (Molina) Standl) that came from Teluk Dalam, Tenggarong Seberang have been done. The sample of leaves was extracted with ethanol and then concentrated by using rotary evaporator. The ethanol crude extract was fractioned with n-hexane, Ethyl Acetate and Methanol. Based on the phytochemical test on secondary metabolits of the gourds fruit (Lagenari siceraria (Molina) Standl), it showed that ethanol crude extract contained flavonoid, saponin, steroid, and phenol. n-hexane fraction contained a steroid, ethyl acetate fraction contained phenol. And methanol-water fraction contained saponin and phenol. Based on the Antibacterial Activity test using the paper disc diffusion method (diameter 6 mm), the results of this test showed that the most active fraction is n-Heksana with : of the Bacillus cereus bacteria at the concentration 1, 2, 4, 6, 8 and 10% (b/v) with inhibition diameter 9.57, 9.88, 10.17, 12.18, 13 and 14.3 mm respectively so minimum inhibitory concentration got 0-1%. The active response toward Salmonella typhi bacteria at the concentration 1, 2, 4, 6, 8 and 10% (b/v) with inhibition diameter 7.50, 7.60, 8.20, 8.38, 8.87, and 9.8 mm so minimum inhibitory concentration got 0-1%. The chloramphenicol antibiotics concentration 0.00386 M as a standard to inhibit the growth of Bacillus cereus and Salmonella typhi bacteria with the inhibition diameter 12.58 mm and 15.06 mm respectively.
UJI AKTIVITAS PERASAN BUAH MENTIMUN (Cucumis sativus L) SEBAGAI BIOLARVASIDA TERHADAP LARVA NYAMUK Aedes aegypti L Eka Siswanto Syamsul; Eka Novitasari Purwanto
JURNAL KIMIA MULAWARMAN Vol 11 No 2 (2014)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Demam Berdarah Dengue (Dengue Hemorragic Fever/DHF) merupakan penyakit infeksi yang disebabkan oleh virus dengue dengan manifestasi klinis demam, nyeri otot, dan nyeri sendi yang disertai leukopenia, ruam, limfadenopati, dan trombositopenia. Penularan infeksi virus dengue terjadi melalui vektor nyamuk genus Aedes sp. Menurut penelitian yang dilakukan oleh laeliyatun dkk (2006) buah mentimun diduga mengandung senyawa saponin dan alkaloid sehingga dapat digunakan sebagai larvasida. Penelitian ini bertujuan untuk mengetahui aktivitas larvasida perasan buah mentimun terhadap larva Aedes aegypti. Perasan buah mentimun dibuat dengan cara memeras sari buahnya. Konsentrasi sediaan uji yang digunakan yaitu 10, 20, 40, dan 80% (v/v). Pengujian larvasida dilakukan dengan cara memasukkan 10 ekor larva instar III dan IV awal ke dalam perasan buah mentimun, kontrol positif berupa abate konsentrasi 10, 20, 40, dan 60% (b/v) sebagai kontrol positif dan air PDAM adalah kontrol negatif. Perlakuan didiamkan selama 24 jam dan diamati jumlah larva yang mati kemudian dilakukan replikasi sebanyak 2 kali. Hasil perhitungan nilai LC50 dari perasan buah mentimun sebesar 43,06 dengan menggunakan metode analisis perhitungan Probit Miller - Tainner. Hal ini menunjukkan bahwa perasan buah mentimun memiliki aktivitas sebagai larvasida. Kata Kunci: Buah Mentimun, Biolarvasida, Larva Nyamuk Aedes aegypti L
PEMANFAATAN AMPAS TEBU SEBAGAI MATERIAL ADSORBEN BESI, MANGAN, pH, COD, BOD DAN TSS PADA AIR SUMUR Rina Rina; Alimuddin Alimuddin; Aman Sentosa Panggabean
JURNAL KIMIA MULAWARMAN Vol 16 No 2 (2019)
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.v16i2.424

Abstract

The research about adsorption concentration of iron, manganese, pH, COD, BOD and TSS at well water using baggase as adsorbent material. The content of iron and manganese was determined using AAS; pH using pH meter; COD and BOD using titration method; TSS using gravimetry me. The results of research showed the best percentage of decrease was use of baggase activated with KOH, can be showed in the reduction of iron was 42.80%, manganese 94.93%, pH 8.45%, COD 24.75%, BOD 32.21%, TSS 2.88%, the percentage of recovery of iron 98.05% and manganese 88.31%.
Pengaruh Suhu Dan Lama Pengeringan Terhadap Sifat Kimia Dan Organoleptik Sale Pisang Kapas (Musa Comiculata) Marwati Marwati; Yuliani Yuliani; Yulian Andriyani; Mentari Mentari
JURNAL KIMIA MULAWARMAN Vol 15 No 1 (2017)
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.v15i1.494

Abstract

Banana “kapas” is an original banana cultivar from Samarinda, with the characteristics at the time of mature is yellow fruit skin color, flesh color yellowish white and has a sweet taste. During this time the banana kapas has not been utilized properly. Based on the characteristics possessed by banana kapas can be processed into the processed products sale banana. This study aims to determine the effect of temperature and drying time on the chemical properties of sale of banana kapas produced, the level of panelist reception at organoleptic test and to get the time and temperature of the dryer that produces a quality banana sale based on chemical properties and organoleptic. The results showed that the temperature and duration of the dryer and its interactions had the significant effect on water content, ash content, vitamin C and reducing sugar content. Treatment with temperature 75oC and 21 hours drying time gave the best result with water content, ash content, vitamin C and reducing sugar are 32.80%, 1.13%, 60.65 mg/g and 16.08% respectively. For hedonic test, hedonic values of color, flavor, aroma and texture is like the hedonic quality of brown, sweet taste, rather banana flavored and hard texture.
PEMANFAATAN TANAMAN PETUNIA UNGU (Ruellia simplex C.) SEBAGAI PENYERAP LOGAM TIMBAL (Pb) PADA MEDIA TUMBUH TANAH Mutia Wulandari; Alimuddin -; Bohari Yusuf
JURNAL KIMIA MULAWARMAN Vol 10 No 2 (2013)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Has been done a research concerning the use of Petunia Ungu (Ruellia simplex C.) plants as an absorbent lead metal (Pb) in the soil growing medium. The research almed to determine the levels of lead metal in petunia ungu plants and determine the effect of variations of concentrations also to determine the effect of absorption time in plants during planting petunia ungu 1, 2, 3 and 4 weeks then petunia ungu planted in the soil as the growing that was added a solutions of lead respectively 0, 25, 50, 75 and 100 mg/L. A soil sample preparation was conducted by wet digestion method and petunia ungu plants by dry digestion method. Metal levels of lead in the soil samples and petunia ungu plants was measured by atomic absorption spectrophotometer at wavelengths of 283,3 nm. The result of research showed that petunia ungu plants can absorb lead metal, the average levels of lead metal in petunia ungu plants consist of 0 ppm 1, 2, 3 and weeks 1,2303; 1,3190; 1,5064 and 1,6915 mg/Kg. 25 ppm 2,1779; 3,0426; 3,4145 and 3,3643 mg/Kg. 50 ppm 3,1317; 3,4316; 3,8689 and 4,2841 mg/Kg. 75 ppm 3,1179; 4,6695; 6,5676 and 6,6828 mg/Kg. 100 ppm 2,5205; 3,6302; 5,4442 and 6,9167 mg/Kg. beside that a lead metal content in the soil as a growing medium decreased.
SINTESIS SURFAKTAN DIETANOLAMIDA DARI METIL ESTER MINYAK BIJI BUNGA MATAHARI (Helianthus annuus. L) MELALUI REAKSI AMIDASI Nur Khasanah; Daniel Daniel; Eva Marliana
JURNAL KIMIA MULAWARMAN Vol 17 No 2 (2020)
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.v17i2.708

Abstract

Synthesis of dietanolamide surfactant from methyl ester of sunflower seed oil (Helianthus annuus. L) has been carried out through an amidation reaction. In the extraction process showed the oil content of sunflower seeds was 32.93% with an acid number of 3.25 mg KOH/g and ALB levels of 1.63%. Sunflower seed oil was then converted to methyl ester through the esterification process and obtained an acid number 1.84 mg KOH/g so that the ALB level dropped to 0.92% and obtained saponification numbers of 61.19 mg KOH/g. The most dominant composition of methyl ester of sunflower seed oil based on GC-MS analysis was methyl oleate at 23.28%. The FT-IR methyl ester spectrum gives a specific absorption peak for group C=O ester at wave number 1743 cm-1. Methyl esters are converted to diethanolamide through an amidation process. The resulting diethanolamide has an acid number of 9.7 mg KOH/g and a saponification number of 3.08 mg KOH/g. The FT-IR spectrum provides specific absorption peaks for groups C=O amides at wave numbers 1622 cm-1. The value of HLB dietanolamide in practice is 13.6495 and in theory is 14.291 which includes the surfactant in the oil in water (O/W) emulsifying class. Keyword : sunflower seed oil, esterification, amidation, dietanolamide
ISOLASI DAN KARAKTERISASI SENYAWA TERPENOID DARI DAUN Macaranga beccariana Merr. Doni Prio Atmoko; Eva Marliana; Erwin Erwin
JURNAL KIMIA MULAWARMAN Vol 16 No 1 (2018)
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.v16i1.670

Abstract

Isolation and characterization of terpenoid compounds from ethyl acetate fraction of Macaranga beccariana Merr. have been done. The separation process at ethyl acetate fraction using gravity column chromatography with gradient elution method. The obtained isolates were tested for purity using thin layer chromatography with various eluents namely n-hexane, chloroform, methanol, acetone and ethyl acetate with Rf values 0; 0.75; 0.80; 0.87 and 0.97 respectively. The terpenoids which were successfully isolated were white crystals with a mass of 0.0119 grams. UV analysis produced 1 peak at l 207.03 nm. Analysis of compounds with FT-IR indicated the functional groups O-H, aliphatic C-H, aliphatic C=C, C-O and C=O. Based on the results of the UV and FT-IR spectrum, the isolate compounds were thought to contain terpenoids.
KAJIAN PERUBAHAN UKURAN RONGGA ZEOLIT RHO BERDASARKAN VARIASI RASIO Si/Al DAN VARIASI KATION ALKALI MENGGUNAKAN METODE MEKANIKA MOLEKULER Wahdana Kusuma Sari; Rahmat Gunawan; Erwin Erwin
JURNAL KIMIA MULAWARMAN Vol 14 No 1 (2016)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

The structure modeling of zeolite RHO with variation of Si/Al ratio (5; 4.33; 3.8; 3.36; 3; 2.69; 2.43; 2.2; 2) and variation of alkaline cations (Li+, Na+, K+, Rb+, Cs+, Fr+) calculated by the molecular mechanics method has been investigated. The result shows that the structure of zeolite RHO with Si/Al ratio 3.36 has the most stable structure with a minimum energy 2652.0308 kcal/mol. The most stable structures of zeolite RHO impregnated with cation is that impregnated with Fr+ (alkaline) with a minimum energy 3006.6587 kcal/mol. The result shows that the zeolite RHO structure with cations Fr+ (alkaline) has the largest pore diameter which potentially has the best adsorption capacity.
MIKROENKAPSULASI MINYAK IKAN PORA-PORA (Mystacoleucus padangensis) MENGGUNAKAN METODE SPRAY DRYING UNTUK APLIKASI NUTRISI MAKANAN Nirmala Efri Hasibuan; Thamrin Thamrin; Yugia Muis
JURNAL KIMIA MULAWARMAN Vol 14 No 2 (2017)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

The microencapsulated of Pora-Pora fish oil (Mystacoleucus padangensis) for food nutrition applications has been done. Production of fish oil using soxhletation extraction method with n-hexane for 6 hours. Manufactured of fish oil powder made by spray drying method using a coating material maltodextrin and gum arabic with a few variations. The characteristic of pora-pora fish oil has a yellow color, acid number 2.61 mg KOH/gr, free fatty acids (% oleic) 1.31 %, peroxide value 11.52 mek/kg, saponification value 89.76 mg KOH/gr and a water content of 0.3%. The composition of saturated fatty acid was 33.6 to 35%, and unsaturated fatty acids about 65 to 66.4%. Microencapsulated powder has a moisture content range from 4.8 to 7.3%, the yield ranged from 24.7 to 33.52%, and encapsulation efficiency maximum was 51%. The fatty acid composition has changed, the content of unsaturated fatty acids increased to 81, 1%. However, polyunsaturated fatty acids decreased.

Page 11 of 23 | Total Record : 224

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