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Jurnal Kimia (Journal of Chemistry)

jchem
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Published by Universitas Udayana

ISSN : 19079850 EISSN : 25992740 DOI : 10.24843/JCHEM

Core Subject : Science,

Chemistry

Jurnal Kimia (Journal of Chemistry) publishes papers on all aspects of fundamental and applied chemistry. The journal is naturally broad in scope, welcomes submissions from across a range of disciplines, and reports both theoretical and experimental studies.

Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)

Articles 17 Documents

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Search results for , issue "Vol.14 No.1 Januari 2020" : 17 Documents clear

SYNTHESIS AND CHARACTERIZATION OF PHOTOCATALYS Fe2O3 PILLARED MONTMORILLONITE DOPED TiO2 AND ITS APPLICATION FOR RHODAMINE B PHODODEGRADATION USING VISIBLE LIGHT IRRADIATION D. A. D. N. Dewi; I N. Simpen; I W. Suarsa
Jurnal Kimia (Journal of Chemistry) Vol.14 No.1 Januari 2020
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

A montmorillonite clay modified with semiconductor metal can act as a photocatalyst material. Montmorillonite clays were chosen because of their natural characteristics which are easily to be modified and have high specific surface area. This research aims to modify montmorillonite clay into photocatalyst material. The montmorillonite clay was intercalated using Fe2O3 to produce Fe2O3-pillared montmorillonite clay, then doped with TiO2 to form a photocatalyst material Fe2O3-PILC / TiO2. Modifications were intended to increase the specific surface area and number of active photocatalyst sites and thus increase the ability of photodegradation. The characterization carried out included characterizing the pillar formation using X-ray Diffraction (XRD), specific surface area by the BET method (Bruneau, Emmet, and Teller), a the number of surface acid-base sites by the titration method. Photocatalyst with the best character was Fe2O3-PILC / TiO2 1: 3 with specific surface area, number of acid and base sites respectively 45,947 m2/g, 20,1736 x 1023 sites/gram and 19,0044 x 1023 sites/gram. The result of photodegradation at optimum condition with visible light at pH 3 using 400 mg photocatalyst was 99.84%. Keywords: photocatalyst, Fe2O3, montmorillonite clay, TiO2, rhodamine B

KULIT BUAH JERUK LIMAU (Citrus amblycarpa (Hassk.) Osche) SEBAGAI ANALGESIK R. A. I. K. Maharani; N. K. Cahyaningsih; M. D. Abimanyu; K. W. Astuti
Jurnal Kimia (Journal of Chemistry) Vol.14 No.1 Januari 2020
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Nonsteroidal anti-inflammatory drugs (NSAIDs) are the treatment options for relieving pain. However, long-term use can trigger gastrointestinal bleeding. Therefore, alternative analgesics which have the same therapeutic effect with lower side effects are needed. Limau (Citrus amblycarpa) is an empirical drug for tingling and cramping. The aim of the study is to determine the analgesic activity of ethanol extract of C. amblycarpa fruit peel. The method used in testing analgesic activity is the Hot Plate method. The study was conducted by dividing 30 mice into 6 groups. The group given CMC-Na 1% was used as a negative control, the group given suspension of sodium diclofenac dose of 6.5 mg/kg of body weight was used as a positive control, and the group given suspension of ethanol extract of C. amblycarpa fruit peel with dose variations 100, 300 and 600 mg/kg of body weight. The test animals were placed on top of the Hot Plate with a temperature of 70°C at 30 minutes after giving suspension test and the response time of mice to heat was observed every 30 minutes for 3 hours with cut off time 15 second. Based on the test results, it can be concluded that the administration of ethanol extract of C. amblycarpa fruit peel with 100, 300 and 600 mg/kg of body weight gave analgesic activity on mice compared to the negative controls (CMC-Na 1%). Keywords: C. amblycarpa, Fruit Peel, Analgesics, Hot Plate

AKTIVITAS ANTIBAKTERI EKSTRAK DAUN TENGGULUN (Protium javanicum Burm. F.) TERHADAP BAKTERI Staphylococcus aureus N. M. Puspawati; N. L. P. F. Widiari; I M. Sukadana
Jurnal Kimia (Journal of Chemistry) Vol.14 No.1 Januari 2020
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

This study aims to examine the antibacterial activity of n-hexane, ethyl acetate, and n-butanol extract of tenggulun leaves (Protium javanicum Burm. F.) in inhibiting the growth of S. aureus bacteria and determine the minimum inhibitory concentration of the most active extracts and identify its active compounds. A total of 1000 g of tenggulun leaf powder was macerated with methanol and 91.78 g of crude methanol extract was obtained which was further partitioned into n-hexane, ethyl acetate, and n-butanol extracts. Antibacterial activity test was carried out using the diffusion well method and the result showed that the ethyl acetate extract at a concentration of 20% was strongly able to inhibit the growth of S. aureus bacteria with inhibition zones of 20.08 mm, followed by n-butanol 16.66 mm, and n-hexane 13.33 mm. The minimum concentration of ethyl acetate extract was 0.2% in inhibiting the growth of S. aureus with inhibition zone diameter of 6.20 mm. Separation of the active ethyl acetate extract was conducted by silica gel column chromatography with mobile phase of n-hexane: ethyl acetate (7.5: 2.5) gave 6 combined fractions. Fractions B, G, H and I showed antibacterial activity at concentrations of 50% with a diameter of inhibition zone of 5.62 mm, 6.87 mm, 8.50 mm, and 6.75 mm respectively. The results of mass spectra analysis from the chromatogram peaks of LC-MS / MS suggested that the G and I fractions were tentatively identified as crotarin, benzophenone-2, and medroxyprogesterone acetate which may contributed to the antibacterial activity by acting synergisticly. Keywords: antibacterial, tenggulun, Staphylococcus aureus, LC-MS/MS.

EKSTRAKSI KATEKIN DARI BIJI ALPUKAT DENGAN VARIASI PELARUT MENGGUNAKAN METODE MASERASI I K. N. Sanjaya; N. K. M. Giantari; M. D. Widyastuti; N. P. L. Laksmiani
Jurnal Kimia (Journal of Chemistry) Vol.14 No.1 Januari 2020
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Avocado is one of the fruits favored by many people because of the avocado's taste and content. Avocados contain antioxidants and nutrients such as fat which is 9.8 g / 100 g of fruit flesh. But until now, the use of avocados is still focused on the fruit while other parts such as seeds are underutilized. Catechins are flavonoid compounds contained in avocado seeds. Extraction of catechins in avocado seeds was carried out by maceration method, namely immersion using three variations of solvents namely ethyl acetate, 95% ethanol, and acetone for 24 hours. The results of maceration were filtered and then remaserated for 24 hours to obtain more filtrate, then concentrated with an evaporator rotary vaccum to obtain thick extracts of avocado seeds which were then tested using the TLC-Densitometry method. The results obtained were the highest levels of catechins obtained in maceration using ethyl acetate solvents, with levels of 25.55% b / b. Keywords: avocado seeds, catechins, maceration

DAMMARANE-TYPE TRITERPENOIDS FROM THE STEMBARK OF CHISOCHETON PENTANDRUS (MELIACEAE) D. G. Katja; S. Salam; . Nurlelasari; D. Harneti; R. Maharani; U. Supratman; Y. Shiono
Jurnal Kimia (Journal of Chemistry) Vol.14 No.1 Januari 2020
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Two dammarane-type triterpenoids, cabraleadiol (1) and cabraleahydroxylactone (2), have been isolated from n-hexane extract of the stembark of Chisocheton pentandrus (Meliaceae). The structure of compounds 1 and 2 were determined by spectroscopic data mainly NMR and mass as well as by comparing with previously reported spectral data. Compounds 1 and 2 were reported for the first time from Chisocheton pentandrus. Keywords: Cabraleadiol, Cabraleahydroxylactone, Chisocheton pentandrus, Meliaceae.

SINTESIS DAN KARAKTERISASI SILIKA GEL DARI ABU VULKANIK GUNUNG AGUNG MELALUI TEKNIK SOL-GEL N. P. S. N. Utari; I W. Sudiarta; P. Suarya
Jurnal Kimia (Journal of Chemistry) Vol.14 No.1 Januari 2020
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Mount Agung in Karangasem, Bali which erupted in September 2017 produced abundant volcanic ash. This ash can be used as a raw material for making silica gel. The stages of the research carried out included analysis of the content of silicon (Si), synthesis of silica gel using sol-gel technique, characterization using FTIR, X-RD instruments as well as surface acidity. The results of the analysis using the X-RD instrument showed the presence of silicon from SiO2 found at 2? = 28,07530. The silica gel yield obtained in this study was 15.05% w/w. The results of the characterization with the FTIR instrument showed that silica gel from volcanic ash of Mount Agung had the main Si-OH and Si-O-Si groups. The hydroxyl bond from Si-OH grup were found at ±3649.32 cm-1 for stretching vibrations and ±1687,71 cm-1 for bending vibrations. Si-O bond from Si-O-Si group were found at ±1207.44 cm-1 for asymmetric stretching vibrations and ±482.20 cm-1 for bending vibrations. Diffractogram showed that the silica gel had an amorphous structure with surface acidity of 18.0222 mmol/g and a surface area of 36.5514 m2/g. Keywords: Agung mountain, silica gel, sol-gel, vulcano ash

OPTIMASI WAKTU AKTIVASI DAN KARAKTERISASI ARANG AKTIF DARI BATANG TANAMAN GUMITIR DENGAN AKTIVATOR NaOH E. Sahara; I K. Y. Resyana; A. A. I. A. M. Laksimawti
Jurnal Kimia (Journal of Chemistry) Vol.14 No.1 Januari 2020
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

The stems of marigold plant can be used as the raw material for making activated carbon. One of the activators that can be used is NaOH with an activated time of 24 hours. The purpose of this study was to obtain an effective activation time through activation with a 2.5% NaOH activator in several variations of activation time followed by characterizing the activated carbon formed. Characterization which was carried out including the determination of water, volatile matter, ash, carbon contents, as well as the absorption capacity of methylene blue and iodine. The results of the study showed that the activation for 28 hours produced an activated carbon with characteristics in accordance with SNI 06-3730-1995, namely: water content (8.40 ± 0.72)%, volatile matter content (9.58 ± 0.95) %, ash content (4.93 ± 0.83)%, carbon content of 77.09%, absorption of iodine (758.66874 ± 1.21) mg/g and absorption of methylene blue 124.6226 mg/g. The results of the analysis with FTIR spectrophotometer on this activated charcoal showed the presence of OH, CH aliphatic, C = O and C = C functional groups. Keywords: activated carbon, sodium hydroxide, marigold plant stems

POTENSI EKSTRAK KULIT BATANG BUNI (Antidesma bunius L. Spreng) UNTUK MENURUNKAN KADAR GLUKOSA DARAH TIKUS WISTAR HIPERGLIKEMIA S. R. Santi; I. M. Sukadana; N. W. I. Paramitha
Jurnal Kimia (Journal of Chemistry) Vol.14 No.1 Januari 2020
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Buni (Antidesma bunius L. Spreng) is one of the traditional medicinal plants whose stem bark has been proven in vitro as an antidiabetic by inhibiting the activity of the ? glucosidase enzyme. This study aims to determine the potential of ethanol extract of buni bark to reduce blood glucose levels in wistar rats in vivo induced by alloxan. Two groups of control rats K (+) and K (-), and three groups of treated rats (P1, P2, and P3) which were given the extract with a dose of 50, 100, and 200 mg/ kg BW respectively, were induced with 150 mg / kg BW alloxan monohydrate to make the rats hyperglycemic. On the 14th day of the trial (posttest) the average blood glucose level was tested using ANOVA with a = 0.05 and Tamhane's. It was concluded that the 200 mg / kg BW ethanol extract of buni bark was able to reduce blood glucose levels to closer to the normal condition when compared to negative control K(-). Keywords: antidiabetic, Antidesma bunius L. Spreng., GC-MS, stem barks

POTENSI TIGA ISOLAT BAKTERI INDIGEN DARI KABUPATEN SIAK PROVINSI RIAU DALAM MENDEGRADASI NAFTALENA R. Novianty; B. Antika; . Saryono; A. Awaluddin; N. W. Pratiwi
Jurnal Kimia (Journal of Chemistry) Vol.14 No.1 Januari 2020
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Naphthalene is a group of Polycyclic Aromatic Hydrocarbons (PAHs) which is carcinogenic when presents in the environment. The purpose of this study was to determine the growth response and test the effectiveness of three isolates of indigen bacteria from the Joint Operation Agency area of ??PT. Siak Bumi Pusako-Pertamina Hulu (BOB BSP-PHE) in degrading naphthalene. The three isolates were tested in a Minimum Media (MM) liquid containing naphthalene with a final concentration of 0.2 mM and was incubated for 7 days. Optical Density (OD) and the degradation ability were analyzed using a UV-Vis spectrophotometer. The results showed that Pseudomonas sp. LBKURCC149 was able to grow in media containing naphthalene. Naphthalene is used as the only source of carbon and is able to degrade naphthalene by 21.98%. Keywords: biodegradation, indigenous, naphthalene, Pseudomonas sp.

FORMULASI SEDIAAN KRIM ANTI LUKA BAKAR DARI EKSTRAK AIR DAGING DAUN ALOE VERA P. O. Samirana; N. W. Satriani; P. R. Harfa; S. P. P. Dewi; C. I. S. Arisanti
Jurnal Kimia (Journal of Chemistry) Vol.14 No.1 Januari 2020
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Aloe vera (Aloe vera) is a plant that is empirically often used to heal burns. Aloe vera leaf meat water extract contains saponins and flavonoids, in addition it also contains tannins and polyphenols. This research was conducted to determine whether the extracted water of Aloe vera leaf meat had met the parameters of extract quality standards so that it could be used in formulations. The steps taken are the extraction of aloe vera leaf meat with the method of infundation maceration, standardization of Aloe vera meat water extraction including testing the determination of drying shrinkage, total ash content, determination of ash content which is insoluble in acid, determination of the essence of water soluble extract, determination of the extract soluble in ethanol and chemical screening, identification with FT-IR, preparation of cream preparations, evaluation of cream preparations. Aloe vera leaf meat extract was obtained by infudation technique. Tests for drying drying extract produced 26.33%, total ash content of 1.3%, water soluble extract content of 11.9% and ethanol soluble extract content of 12.01%, total flavonoid content of 2.9%. Keywords: Aloe Vera, Formulation, Cream, Burns.

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Home Page

OAI Link

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Contact Name Ni Putu Diantariani

Contact Email jurnalkimia@unud.ac.id

Phone +628123640424

Journal Mail Official jurnalkimia@unud.ac.id

Editorial Address Program Studi Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Udayana Kampus Bukit Jimbaran, Jimbaran, Bali, Indonesia

Location Kota denpasar, Bali INDONESIA

Abstract

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Contact Name
Ni Putu Diantariani

Contact Email
jurnalkimia@unud.ac.id

Phone
+628123640424

Journal Mail Official
jurnalkimia@unud.ac.id

Editorial Address
Program Studi Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Udayana Kampus Bukit Jimbaran, Jimbaran, Bali, Indonesia

Location
Kota denpasar,

Bali

INDONESIA