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Studi Teoritis Senyawa Turunan Kalkon Hidroksi Sebagai Sensor Kimia Berbagai Anion Fitra Perdana; Karna Wijaya; Ria Armunanto
Jurnal Kimia Riset Vol. 3 No. 2 (2018): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (334.484 KB) | DOI: 10.20473/jkr.v3i2.10425

Abstract

AbstrakStudi secara teoritis telah dilakukan untuk mempelajari interaksi senyawa turunan kalkon hidroksi (CH) sebagai sensor kimia dengan anion F-, Cl-, Br-, CN-, CH3COO-, dan NO3-. Penelitian ini bertujuan untuk memodelkan struktur molekul senyawa turunan kalkon hidroksi (CH) dan sifat sensornya serta model interaksinya dengan anion dengan metode DFT. Hasil optimasi geometri menunjukkan terjadinya pemanjangan ikatan O-H sebesar 0,63-0,85 Å dengan adanya anion F-, CN-, and CH3COO-. Hal ini mengindikasikan terjadinya deprotonasi sensor kalkon hidroksi (CH) oleh anion. Sedangkan interaksi sensor kalkon hidroksi (CH) dengan anion Cl-, Br-, dan NO3- hanya berupa ikatan hidrogen dengan pemanjangan ikatan O-H sebesar 0,08-0,46 Å. Sensor kalkon hidroksi (CH) yang mengalami deprotonasi memiliki energi interaksi yang lebih besar yaitu -209,37 – -424,06 kJ/mol dibandingkan sensor yang hanya membentuk ikatan hidrogen yaitu -98,60 – -125,59 kJ/mol. Sensor yang mengalami deprotonasi mengakibatkan turunnya selisih energi HOMO-LUMO dari -3,94 – -4,06 eV menjadi -2,62 – -2,75 eV.Kata kunci: sensor kimia, kalkon hidroksi, anion, DFT  AbstractTheoretical study had been carried out to investigate interaction between hydroxy chalcone derivatives (CH) as chemosensors with F-, Cl-, Br-, CN-, CH3COO-, and NO3- anions. This study was aimed to design molecular structures of chemosensor hydroxy chalcone (CH) properties for the anions and their interaction models with DFT method. The result of geometry optimization showed 0,63-0,85 Å O-H bond elongation of the hydroxy chalcone was occured by F-, CN-, and CH3COO-. It was indicated deprotonation of sensor hydroxy chalcone (CH) by anions. Where as the interaction of the hydroxy chalcone (CH) with Cl-, Br-, and NO3- just formed an hydrogen bond with 0,08-0,46 Å O-H bond elongation. Deprotonized sensor hydroxy chalcone (CH) had more energy change of interaction -209,37– -424,06 kJ/mol than sensor which just formed the hydrogen bond -98,60 – -125,59 kJ/mol. Deprotonized sensor caused reduction of the difference of HOMO-LUMO energy from - 3,94 – -4,06 eV to -2,62 – -2,75 eV.Keywords: chemosensor, hydroxy chalcone, anion, DFT
OPTIMASI PARAMETER TEKNIK SQUARE WAVE VOLTAMMETRY DENGAN ELEKTRODA GRAFIT FAN PENERAPANNYA PADA ANALISIS KLORIN BEBAS DALAM AIR CUCIAN BERAS BERPEMUTIH Fenly Arismaya; Siswoyo Siswoyo; Asnawati Asnawati
Jurnal Kimia Riset Vol. 3 No. 2 (2018): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (586.588 KB) | DOI: 10.20473/jkr.v3i2.8704

Abstract

AbstrakKlorin (OCl-) merupakan bahan kimia berbahaya bagi kesehatan manusia, yang kadang digunakan sebagai bahanpemutih beras.  Oleh  sebab  itu  dilakukan  upaya  analisis  Klorin  menggunakan  teknik  Square  Wave  Voltammetry.  Penelitian  ini melakukan optimasi pengaturan parameter (konsentrasi larutan elektrolit, pH, dan sampling time) dan karakterisasi metode kerja dari teknik Square Wave Voltammetry, sehingga teknik ini dapat diaplikasikan untuk analisis klorin bebas (OCl-) dalam air cucian beras berpemutih. Variasi konsentrasi larutan elektrolit yang diterapkan dalam penelitian ini adalah 0,05; 0,10; 0,15; 0,20; 0,25 M. Variasi pH yang diterapkan pada pH 7, 8, 9, 10, 11, dan 12. Variasi sampling time yang diterapkan adalah 5, 10, 15, dan 20 milisekon. Berdasarkan hasil penelitian yang diperoleh, konsentrasi larutan elektrolit optimum pada konsentrasi 0,15 M, pH optimum pada kondisi pH 9, dan sampling time optimum adalah 10 milisekon. Hasil karakterisasi kinerja metode pada teknik Square Wave Voltammetry yang telah dioptimasi ini menghasilkan linieritas 0,9885, limit deteksi sebesar 9,563 ppm, dan nilai koefisien variasi sebesar 4,09%. Hasil pengukuran konsentrasi klorin bebas (OCl-) dengan teknik Square Wave Voltammetry yang telah dioptimasi adalah senilai 30,125 ppm. Pengaturan tiga parameter tersebut berpengaruh terhadap bentuk dan ketinggian puncak voltamogram yang dihasilkan. Kata Kunci: Square Wave Voltammetry, Optimasi Parameter, Klorin bebas, Beras Berpemutih.
SKOPOLETIN SUATU SENYAWA FENILPROPANOID DARI EKSTRAK ETIL ASETAT UMBI UBI JALAR (Ipomoea batatas L.) Nanik Siti Aminah; Choirotul Isma; Alfinda Novi Kristanti
Jurnal Kimia Riset Vol. 3 No. 2 (2018): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (418.964 KB) | DOI: 10.20473/jkr.v3i2.12061

Abstract

AbstrakTelah berhasil diisolasi senyawa golongan fenil propanoid  dengan nama “skopoletin” dari ekstrak etil asetat  umbi Ubi Jalar (Ipomoea batatas L.). Ekstraksi senyawa fenolik dilakukan dengan metode maserasi menggunakan pelarut metanol, dilanjutkan partisi menggunakan n-heksana dan etilasetat. Pemurnian dilakukan dengan kromatografi kolom gravitasi dan ktomatografi radial menghasilkan senyawa golongan fenil propanoid. Struktur skopoletin diidentifikasi berdasarkan data spektrum UV, 1D dan 2D NMR.Kata kunci : fenil propanoid, skopoletin, dan Ipomoea batatas L. AbstractPhenylpropanoid group compound has been isolated as “scopoletin” from ethylacetate extract of tuber flesh Sweet potatoes (Ipomoea batatas L.). Extraction of phenolic compound was done by maceration method using methanol solvent, then partition with n-hexana and  ethylacetate, respectively. The process of purification using various chromatographic techniques yielded compound of phenylpropanoid group. Structure of scopoletin is identified based on UV, 1D, and 2D NMR spectra.Keyword  : phenyl propanoid, scopoletin, dan Ipomoea batatas L.
Precipitation Solvents for RNA Extraction of Dengue Virus Type 3: Dimethylformamide, Ethylenediamintetraacetic Acid, and Ultrapure H2O Rizqidhana Juliana Putri; Teguh Hari Sucipto; Harsasi Setyawati; Siti Churrotin; Ilham Harlan Amarullah; Puspa Wardhani; Aryati Aryati; Soegeng Soegijanto
Jurnal Kimia Riset Vol. 3 No. 2 (2018): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (477.838 KB) | DOI: 10.20473/jkr.v3i2.9353

Abstract

Dengue is a disease caused by a virus from the family Flaviviradae, carried by a female mosquito of Aedes aegypti species. Dengue fever is widespread in the tropic areas. It caused by rainfall, temperature and unplanned urbanization. According to the ministry of health , almost all provinces in Indonesia are endemic areas of dengue fever. In 2014, up to mid-December Dengue Hemorrhagic Fever (DHF) patients in 34 provinces in Indonesia are 71,668 people and 641. This figure is lower than the previous year, 2013 with 112,511 people and 871 deaths . This disease consists of four types of serotypes, namely DENV-1, DENV-2, DENV-3, and DENV-4. This disease can be identified using a variety of methods, one of the method is Reverse Transcription - Polymerase Chain Reaction (RT-PCR) method. This study aims to determine the ability of Dimethylformamide (DMF), Ethylenediamintetraacetic Acid (EDTA), and Ultrapure H2O as the substitute of  Ethanol for precipitation in RNA extraction process. The sample used in this research obtained from Surabaya. RNA extraction itself can be done by using a special kit for RNA extraction. In Reverse Transcription - Polymerase Chain Reaction method, first RNA is extracted and then transcribed back (Reverse Transcription) which then form cDNA that later will be amplified by using PCR method. In this study used specific primers for dengue virus type 3 (DENV-3). The results of this study show that DMF, EDTA, and Ultrapure H2O can be used as the substitute of Ethanol for precipitation on RNA extraction. The result is evidenced by the formation of viral DNA bands on gel electrophoresis results.
UJI POTENSI ANTIJAMUR CANDIDA ALBICANS EKSTRAK DAUN GELINGGANG (CASSIA ALATA L.) DIBANDINGKAN DENGAN SEDIAAN DAUN SIRIH YANG BEREDAR DI PASARAN SECARA IN VITRO Yustini Alioes; amalia Kartika
Jurnal Kimia Riset Vol. 3 No. 2 (2018): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (509.178 KB) | DOI: 10.20473/jkr.v3i2.12040

Abstract

ABSTRAK           Candida albicansmerupakan salah satu contoh mikroorganisme patogenik penyebab infeksi pada bagianlumenorgan tubuh manusia yang berbentuk saluran. Candida albicanspada saluran reproduksi dan saluran urinaria wanita sering dikenal dengan “penyakit keputihan”. Salah satu cara mengatasi munculnya keputihan adalah dengan membersihkan daerah kewanitaan menggunakan larutan antiseptik seperti povidone iodine. Masyarakat pada umumnya juga menggunakan sediaan daun sirih yang telah beredar di pasaran. Sediaan ini juga dikenal sebagai antiseptik sehingga dapat menghambat pertumbuhan C. Albicans,selain daun sirih (Piper bitleL.), ternyata daun gelinggang atau ketepeng cina (Cassia alataL.) juga memiliki aktivitas antibakteri dan antijamur.           Penelitian ini merupakan penelitian eksperimental dengan menggunakan isolat jamur C.albicans. Proses ekstraksi daun gelinggang dilakukan dengan teknik maserasi menggunakan pelarut metanol, alkohol 96%, dietil eter, dan infusa. Ekstrak dan SDS diuji aktivitas antijamurnya dengan menggunakan metode difusi agar menggunakan kertas cakram. Analisis uji ini dilakukan dengan mengukur zona hambatan ekstrak dan sediaan daun sirih terhadap pertumbuhan jamur.          Analisis nilai persentase aktivitas zona hambat ekstrak metanol daun C.alata menunjukkan tidak adanya perbedaan yang signifikan dengan SDS 1 (asymp. Sig.= 0,245) dan dengan SDS 2 (asymp. Sig. = 0,882) dalam menghambat pertumbuhan jamurC.albicans.Ekstrak metanol daun gelinggang memiliki efektifitas yang hampir sama dengan dua kelompok perlakuan SDS yang beredar di pasaran(SDS 1 dan SDS 2).Kata kunci: Antijamur, Candida albicans, sediaan daun sirih (SDS), ekstrak daun Gelinggang (Cassia alata L.). ABSTRACT Candida albicans is one of pathogenic microorganisms that cause infections in the lumen of the organs of human body in the shape of the channel. Candida albicans in the reproductive tract and women urunaria tract is often known as "diseases of vaginal discharge". One way of overcoming the appearance of vaginal discharge is to clean the area using an antiseptic solution of femininity such as povidone iodine. Society in General also use material of betel leaf that has been circulating in the market. This material is also known as an antiseptic so that it can inhibit the growth of C. albicans. In addition to the betel leaf (Piper bitle l.), turns the leaves gelinggang or Chinese ketepeng (Cassia alata L.) also has antibacterial and antifungal activity.             The objective of this study was to compare the test potential antifungal Candida albicans gelinggang leaves (Cassia alata L.) with material of betel leaf that already circulating in the market(SDS).This research is experimental research using fungal isolates of C. albicans. The extraction process of leaf gelinggang done with the technique of maceration using methanol solvent, 96% alcohol, diethyl ether, and infusa. Extract and SDS tested of antifungal activity by using diffusion method using paper discs. The analysis of the test is done by measuring the resistance zone extracts and preparations betel leaf against mold growth.         The analysis of the value of the percentage of the activity of the methanol extracts of the leaves of the inhibitory zones c. alata indicates the absence of a significant difference with the SDS 1 (asymp. Sig. = 0.245) and with SDS 2 (asymp. Sig. = 0.882) in inhibiting the growth of c. albicans yeast.The methanol extract of gelinggang leaves treatment has effectiveness similar to the treatment of the two groups of SDS (SDS 1 and SDS 2) that is circulating in the market.Keywords: Antifungal preparations, Candida albicans, Betel leaf (SDS), Gelinggang leaf extract (Cassia alata L.).
MODIFIKASI ELEKTRODA PASTA KARBON (EPK) MENGGUNAKAN GRAFENA OKSIDA (GO) UNTUK PENENTUAN BUTIL HIDROKSI ANISOL SECARA VOLTAMMETRI Ganjar Fadillah; Elsa Ninda Karlinda Putri; Syahna Febrianastutib
Jurnal Kimia Riset Vol. 3 No. 2 (2018): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (779.563 KB) | DOI: 10.20473/jkr.v3i2.10010

Abstract

Butil hidroksi anisol (BHA) merupakan senyawa aditif yang banyak ditemukan dalam sediaan bahan pangan dan memberikan efek karsinogenik pada jumlah yang besar. Mengingat pentingnya analisis senyawa tersebut dan regulasi yang cukup ketat maka pada penelitian ini telah dikembangkan metode analisis berbasis elektrometri yaitu modifikasi elektroda pasta karbon (EPK) dengan grafena oksida (GO) untuk meningkatkan sensitivitas pengukuran. GO dipreparasi menggunakan metode Hammer yang dimodifikasi dan dikarakterisasi menggunakan x-ray diffraction (XRD) dan fourier transform infra red (FTIR). Hasil pengukuran analit menggunakan differential pulse voltammetry (DPV) menunjukan bahwa adanya modifikasi tersebut dapat meningkatkan respon arus pengukuran yang dihasilkan dari 11,70 μA menjadi 31,21 μA dalam larutan BHA 0,5 mM dengan elektrolit pendukung PBS 0,1 M pH 7. Hasil uji hipotesis  menunjukkan bahwa adanya nilai beda yang signifikan antara EPK/GO dengan EPK tanpa modifikasi terhadap respon arus pengukuran analit BHA.
Analisis GCMS terhadap Senyawa Fitokimia Ekstrak Metanol Ganoderma lucidum Surahmaida Surahmaida; Tri Puji Lestari Sudarwati; Junairiah Junairiah
Jurnal Kimia Riset Vol. 3 No. 2 (2018): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (297.637 KB) | DOI: 10.20473/jkr.v3i2.12060

Abstract

AbstrakPenelitian ini bertujuan untuk menganalisis senyawa fitokimia ekstrak metanol Ganoderma lucidum dengan metode GCMS. Tahapan penelitian ini meliputi  proses ekstraksi serbuk halus G. lucidum menggunakan pelarut metanol dengan metode maserasi selama 3x3 hari dan ekstrak metanol G. lucidum yang didapatkan dianalisis dengan alat GCMS. Senyawa fitokimia yang teridentifikasi oleh GCMS antara lain thiophene, 2-hexyl-; 3-((3-Acetoxythyl)-6-acetoxymethyl-2,4-dimethyl)phenyl)-2-methyl-(E)-2-propenyl acetate; 2,7-Diphenylindole; dan 5-(2-Bromophenyl)-7-chloro-2,3-dihydro-1H-1,4-benzodiazepin-2-one. Dapat disimpulkan bahwa senyawa fitokimia pada ekstrak metanol G. lucidum memiliki efek farmakologis bagi kesehatan manusia dan aktivitas biologis lainnya.  Katakunci: Ganoderma lucidum, senyawa fitokimia, GCMS AbstractThis study aims to analyze the phytochemical compounds of methanol extract of Ganoderma lucidum using the GCMS method. The stages of this study include extraction of fine powder G. lucidum using methanol solvent by maceration method for 3x3 days and methanol extract of G. lucidum obtained were analyzed by GCMS. Phytochemical compounds identified by GCMS is thiophene, 2-hexyl-; 3 - ((3-Acetoxythyl) -6-acetoxymethyl-2,4-dimethyl) phenyl) -2-methyl- (E) -2-propenyl acetate; 2,7-Diphenylindole; and 5- (2-Bromophenyl) -7-chloro-2,3-dihydro-1H-1,4-benzodiazepine-2-one. It can be concluded that phytochemical compounds in methanol extract of G. lucidum have pharmacological effects on human health and other biological activities. Keywords: Ganoderma lucidum, phytochemical compounds, GCMS
ISOLATION AND IDENTIFICATION OF SECONDARY METABOLITES OF BLACK BETEL (Piper betle L. var Nigra) Junairiah Junairiah; Ni’matuzahroh Ni’matuzahroh; Nabilah Istighfari Zuraidassanaaz; Lilis Sulistyorini
Jurnal Kimia Riset Vol. 3 No. 2 (2018): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (329.337 KB) | DOI: 10.20473/jkr.v3i2.12064

Abstract

AbstractPiper betle L. var Nigra commonly known as black betel have a potential as drug raw materials. The leave of black betel  can be used to resist bleeding so as to accelerate the healing of wounds on the skin, sputum, other uses are for epistaxis, as well as for dialysis, asthma, bronchitis, cough, and high blood pressure. Many uses of black betel leaves make it interesting to learn its metabolites compounds by phytochemical screening. So, this research aimed  to isolate and identificate secondary metabolites of Piper betle L. var Nigra. This research used three kind of organic solvents, there were methanol, ethyl acetate, and n-hexane. Several screening tests were used to isolate and identificate the phytochemical compound, including screening of alkaloids, terpenoids/steroids, flavonoids, polyphenols, tannins, and saponins. The results showed that methanol extract of black betel leaves contained of alkaloids, terpenoids/steroid, flavonoids, polyphenols and tannins compounds. The ethyl acetate extract of black betel leaves contained of terpenoids/steroid, flavonoids and tannins compounds. The n-hexane extract of black betel leaves contained of terpenoids/steroid. The methanol extract of Piper betle L. var Nigra contained more secondary metabolites than n-hexane and ethyl acetate extracts. Keywords : methanol ; Phytochemical screening ; Piper betle L. var Nigra.
Initial Characterization of Alkaline Protease from Pseudomonas sp Isolated from Chicken Feces (POSTER) Yuyun Firdausi Nuzulah; Suharti Suharti
Jurnal Kimia Riset Vol. 3 No. 2 (2018): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (729.516 KB) | DOI: 10.20473/jkr.v3i2.12055

Abstract

Abstract Proteases are ubiquitous enzymes and it can be found in all living organisms. Extracellular proteases have high economic value, where the enzymes can be applied to various industrial sectors. In order to find an alternative source of protease, a search for microbe producing extracellular protease has been done using a selective medium. An extracellular producing bacterium that is identified as Pseudomonas sp has been isolated from chicken feces, that is Gallus gallus bankiva, collected from residential areas at Lowokwaru, Malang, Indonesia. The analysis shows that the bacterium produces extracellular protease with optimum activity after incubation of 66 hours at 35oC. Initial characterization of the extracellular protease shows that the extracellular protease produced by Pseudomonas sp has an optimum activity at pH 12 and an optimum temperature at 39oC. At these conditions, the crude extract enzyme has a specific activity of 0,522 U/mg. The high pH resistance allows its application to variety of industrial processes that require high pH operation. Therefore further studies need to be done to get better understanding of enzyme properties.  Keywords: Alkaline protease, Chicken feces, Gallus gallus bankiva, Pseudomonas sp
ISOLASI SENYAWA ALKALOID TURUNAN FUROKUINOLIN DARI RANTING Toddalia asiatica L. DAN UJI AKTIVITAS ANTIKANKER Mulyadi Tanjung; Devina Oktari Rahayu; Tjitjik Srie Tjahjandarie
Jurnal Kimia Riset Vol. 3 No. 2 (2018): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (536.999 KB) | DOI: 10.20473/jkr.v3i2.12062

Abstract

AbstrakToddalia asiatica merupakan tumbuhan perdu yang tersebar di Afrika, Asia, Madagascar, dan Australia (Hu et al., 2015). Senyawa metabolit sekunder yang ditemukan tumbuhan Toddalia asiatica L. adalah alkaloid. Ekstraksi senyawa alkaloid dari tumbuhan Toddalia asiatica L. dengan cara maserasi menggunakan pelarut metanol pada suhu kamar. Proses isolasi dilakukan melalui fraksinasi dan pemurnian menggunakan kromatografi kolom gravitasi, dan kromatografi radial. Hasil isolasi yang didapatkan merupakan senyawa alkaloid turunan furokuinolin yaitu skimmianin. Struktur senyawa alkaloid turunan furokuinolin yang  diketahui melalui analisa hasil spektroskopi UV, IR, 1D NMR (1H-NMR dan 13C-NMR),  serta 2D NMR (HMBC dan HMQC) dan uji aktivitas antikanker terhadap sel kanker murin leukemia P-388. Kata kunci : Alkaloid turunan furokuinolin, skimmianin, Toddalia asiatica L., antikanker AbstractToddalia asiatica L. is a bushy plant that spreads in Africa, Asia, Madagascar, and Australia (Hu et al., 2015). The secondary metabolite compound found in Toddalia asiatica L. is alkaloid. Extraction of alkaloid compounds from Toddalia asiatica L. by maceration using methanol at room temperature. The isolation process is diluted by fractionation and purification using column chromatography of gravity and radial chromatography. The result  of isolation is an alkaloid compound derived furokuinolin, skimmianin. The structure of alkaloid compounds derived from furokuinolin known through spectroscopic analysis including UV, IR, 1D NMR (1H-NMR and 13C-NMR), and 2D NMR (HMBC and HMQC) and the anticancer activity test against the cancer cells murine P-388.Key word :    Alkaloid  compound  derived  furokuinolin,  skimmianin,  Toddalia asiatica L., anticancer

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