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Jurnal Kimia (Journal of Chemistry)

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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 518 Documents

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AKTIVITAS ANTIJAMUR MINYAK ATSIRI RIMPANG DRINGO (Acorus calamus L.) TERHADAP JAMUR Botryodiplodia theobromae PENYEBAB BUSUK BUAH PISANG N. L. Rustini
Jurnal Kimia (Journal of Chemistry) Vol. 4, No. 2 Juli 2010
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (278.112 KB)

A compound with antifungal activity has been isolated from dringo (Acorus calamus L.) essential oil. Steamdistillation was conducted to isolate the oil and resulted in 0.5 % yield. Antifungal activity test towardsBotryodiplodia theobromae showed that the ethanol posseses antifungal activity with an inhibition capacity of 94.4%. GC-MS analysis resulted in three main peaks at 15.008; 15.233; and 16.490 minutes. It was suggested from thepeak intensity that the last peak represents the major component of the extract. Futher more according to the librarydata base, the spectra of this compound matches with the Asarone spectra.

ISOLASI KITIN, KARAKTERISASI, DAN SINTESIS KITOSAN DARI KULIT UDANG Sry Agustina; I Made Dira Swantara; I Nyoman Suartha
Jurnal Kimia (Journal of Chemistry) Vol. 9, No. 2 Juli 2015
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Chitosan is the modification of chitin which found on the outer skin of Crustacea species such as shrimps and crabs. This study aims to isolate chitin, syntesize and charactetize chitosan from shrimp shells. Chitin isolation stage included demineralization using HCL 1.5M and deproteination step with NaOH 3.5%. Transformation of chitin into chitosan was done through the deacetylation reaction by using NaOH 60%. The result showed that characteristic of the chitosan obtained in this research was as follows: the yield of transformation chitin into chitosan was 67.08%; it had a white color powder texture with had no smell; water content 1.55%; It solubled in 2 % acetic acid with 84.85 % deacetylation.

POTENSI TOKSISITAS NEUROLOGIS VINKRISTIN PADA TUBUH YANG TERJADI PADA ANAK DENGAN LEUKEMIA LIMFOSITIK AKUT Ni Made Intan Pertiwi; Ketut Ariawati; Rasmaya Niruri; Rini Noviyani; A.A. Raka Karsana; Mahardika Aprilia Iflahah
Jurnal Kimia (Journal of Chemistry) Vol. 7, No. 2 Juli 2013
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Acute Lymphoblastic Leukemia (ALL) treatment are chemotherapeutic agent and bone marrow transplantation. Treatment with chemotherapeutic agent is the primary curative for leukemia. Vincristine is one of chemotherapeutic agents in ALL. Neurotoxicity is one of the toxicity caused by vincristine. The objective of this study was to find out the potential neurotoxicity of vincristine in children with ALL. Method: This study was observational design. The study was conducted at Sanglah Hospital Denpasar. Patient data was collected from May 2011- March 2013 period. Result: Seventeen patients who fit to the sample criteria were got. Of the 17 childhood with ALL who have treatment with chemotherapeutic agent based on Indonesian Protocol 2006, 3 patients showed neurotoxicity. Patients may suffered from leg pain, foot pain, and walking pain. Conclusion: There are potential neurotoxicity vincristine in children with ALL who have treatment with chemotherapeutic agent. Potential neurotoxicity can be caused by mechanism of action vincristine in microtubules.

UJI AKTIVITAS VERMISIDAL EKSTRAK ETANOL KULIT BATANG LAMTORO (Leucaena leucocephala (Lam.) de Wit) PADA CACING TANAH (Pheretima posthuma) SECARA IN VITRO S. Ainnurrahmah; K. Widnyani Astuti; P. Oka Samirana
Jurnal Kimia (Journal of Chemistry) Vol. 12 No.1 Januari 2018
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Askariasis merupakan penyakit infeksi yang disebabkan oleh cacing Ascaris lumbricoides terutama terjadi pada anak-anak. Salah satu upaya penanggulangan askariasis yang menyerang manusia dilakukan dengan cara memberikan antelmintik yang diperlukan untuk pengembangan potensi tanaman obat tradisional yaitu kulit batang lamtoro. Ada beberapa tahapan dalam penelitian ini yaitu determinasi tumbuhan, determinasi cacing tanah Pheretima posthuma, uji daya vermisidal secara in vitro. Uji aktivitas vermisidal dilakukan pada 105 cacing tanah sebagai sampel kemudian dibagi dalam 7 kelompok yaitu kelompok pertama kontrol negatif berupa suspensi CMC-Na 0,5% b/v); kelompok kedua kontrol positif berupa suspensi Pirantel pamoat 0,042% b/v; Selanjutnya suspensi ekstrak etanol kulit batang lamtoro dilakukan pada kelompok perlakuan ketiga sampai ketujuh 0,25% b/v; 0,5% b/v; 1% b/v; 2% b/v; dan 4% b/v pada masing-masing perlakuan diinkubasi pada suhu 37°C setelah itu dilakukan pengamatan berapa perolehan mortalitas cacing Pheretima posthuma dalam tiap 2 jam selama 50 jam. Untuk mengetahui data persentase mortalitas cacing tanah Pheretima posthuma, maka perlu dilakukan beberapa tahap uji yaitu uji Kruskal-Wallis yang selanjutnya uji Mann-Whitney kemudian digunakan analisis probit untuk mengetahui nilai LC100 dan LT100 ekstrak etanol kulit batang lamtoro. Hasil uji aktivitas vermisidal ekstrak etanol kulit batang lamtoro terhadap cacing tanah Pheretima posthuma diperoleh salah satu kelompok yaitu perlakuan tujuh dengan konsentrasi 4% b/v yang diketahui memiliki aktivitas vermisidal terhadap cacing tanah Pheretima posthuma karena sesuai dengan hasil uji statistik diperoleh hasil berbeda bermakna dengan kontrol negatif (p<0,05). Nilai LC100 dan LT100 berdasarkan analisis probit ekstrak etanol kulit batang lamtoro yaitu sebesar 4,2% b/v dan 53 jam.

STUDI ADSORPSI ION FOSFAT OLEH BATU KAPUR BUKIT JIMBARAN P. Suarya; A. A. B. Putra; N. L. P. Mahadewi
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 presence of phosphate ions in the aquatic environment can cause disturbance of water balance, such as the increase of fertility of quatic plants resulting in water surface closure. Sunlight will be obstructed and the exchange of oxygen in water is also disrupted. Various attempts to remove phosphate ions have been carried out, adsorption is one of the promising alternative methods to reduce these ions from the waters because of the high effectiveness and the cost required for the preparation of the adsorbent is quite cheap. The general objective of this research was to study the selectivity of limestone in adsorpting phosphate ions. The results obtained can complement the data on the use of limestone which in turn can be used as a reference in the management of wastewater contaminated by phosphate ions. The ability of limestone in adsorping phosphate ions was tested using the Batch method with an investigation on the variations of the adsorption time and the concentration of phosphate ions. Limestone characterization test results before and after activation showed an increase in limestone characteristics as follows: surface acidity increased from 0.50 to 1.40 mmol/g and the specific surface area increased from 12.66 to 25.61 m2 /g. The amount of phosphate adsorped to the activated limestone at the optimum contact time of 15 minutes was of 3.125 mg/g, and at the concentration of 70 ppm was of 3.094 mg/g following the Langmuir adsorption isotherm pattern with an R2 value of 0.9981. Keywords: activation, adsorption, characterization, limestone, phosphate ion

INTERKALASI BENZALKONIUM KLORIDA KE DALAM MONTMORILLONIT TERAKTIVASI ASAM DAN PEMANFAATANNYA UNTUK MENINGKATKAN KUALITAS MINYAK DAUN CENGKEH P. Suarya
Jurnal Kimia (Journal of Chemistry) Vol. 3, No. 1 Januari 2009
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (99.396 KB)

This research was conducted to observe the surfactant intercalation into acid-activated montmorillonite clay.This clay was applied as adsorbent for increasing the quality of clove leaf oil. The acid used as an activation was 1.5M sulphuric acid and the surfactant for intercalation was Benzalkonium Chloride (BKC) with concentration variation(0; 0.1; 0.5; 1; and 2%). The result of the reseach showed that the changes of basal spacing d001 for S0-0; Sa-0; Sa-0,1;Sa-0,5; Sa-1; and Sa-2 were 15.15548; 15.40269; 15.20580; 14.62099; 14.77594; and 14.74415 Å respectively. Thesurface area for S0-0; Sa-0; Sa-0,1; Sa-0,5; Sa-1; and Sa-2 were 26.2239; 27.4035; 26.0482; 26.4557; 27.7885; and 26.6809m2/g respectively. The Sa-0,1 adsorbent had the highest surface acidity (1.0135 ± 0.01100 mmol/g). Every gram ofadsorbent Sa-0,1 had the highest adsorption capacity to clarify 20.0 mL clove leaf oil at 120 minutes contact time.After adsorption by Sa-0,1 the clove leaf oil was clearer and contained higher concentration of eugenol than beforeadsorption.

UJI TOKSISITAS EKSTRAK DAUN WARU (Hibiscus tiliaceus L.) TERHADAP LARVA Artemia salina Leach SERTA IDENTIFIKASI GOLONGAN SENYAWANYA Ni Luh Rustini; Komang Ariati; A. A. Indah Purna Dewi; I Made Dira Swantara
Jurnal Kimia (Journal of Chemistry) Vol. 9, no. 1 Januari 2015
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

The “Brine Shrimp Lethality Test” (BSLT) is a preliminary test used to monitor the bioactive compounds from natural products as anti-cancer. This research aimed to determine of toxic compounds in the leaf of waru (Hibiscus tiliaceus L.). Maceration of 900 g waru leaf powder with 7000 mL of ethanol (5x24 hours) yielded 53,19 g ethanol extract with toxicity tests to larvae of Artemia salina Leach (LC50) of 79.43. The ethanol extract was partitioned to yield 1,81 g of n-hexane (LC50 = 63,09 ppm), 1,52 g of chloroform (LC50 = 1000 ppm) and 50,08 g of aqueous extract (LC50 = 316 ppm). The most toxic, n-hexane extract, was then separated , purified and identified. n-hexane extract was separated by column chromatography with silica gel 60 as stationary phase and n-hexane-chloroform-ethanol (5:4:1) as mobile phase to yield 7 fractions. Fraction one (F1) with a single stain on thin-layer chromatography was the most toxic (LC50 = 398 ppm). Identification with phytochemical test, UV-Vis spectrophotometer and IR spectrophotometer, showed that the isolate contained sterol compounds.

EKSTRAK DAUN SIRSAK (Annona muricata L.) SEBAGAI ANTIOKSIDAN PADA PENURUNAN KADAR ASAM URAT TIKUS WISTAR Ni Putu Rahayu Artini; Sri Wahjuni; Wahyu Dwijani Sulihingtyas
Jurnal Kimia (Journal of Chemistry) Vol. 6, No. 2 Juli 2012
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (189.493 KB)

Isolation and identification of anti-oxidant active isolate from soursop leave (Annona muricata L.) was carried out in this study. Methanol was used to macerate an 158 gram sample. This crude extract showed 77,22% of inhibition ability to reduce oxidation of DPPH (difenil-picrylhydrazine) at the fifth minute and 85,42% at the sixtieth minute inhibition time. Petroleum benzene, chloroform, n-buthanol, and water were applied to separate it. N-buthanol extract has the highest anti-oxidant reduction percentage which was 91,10% of inhibition ability to reduce oxidation at the fifth minute and 97,90% at the sixtieth minute inhibition time. From this research, it was obtained that the best dose of n-buthanol fraction applied to decrease uric acid was 200 mg/Kg BW with a percentage decrease of 86,29% (p=0,001).n-buthanol fraction was identified by gas chromatography-mass spectrometer. The active compounds observed were: benzofuran,2,3-dihidro; tetradecana; 3-ethoxy-1,4,4a,5,6,7,8,8a-octahydroisoquinoline; 2-cyclohexen-1-one, 4-hydroxy-3,5,6-trimethyl-4-(3-oxo-1-butenyl). In conclusion, soursop leave (Annona muricata L.) extract was active for decreasing uric acid of rat tested. For future research, this method could be applied to human in decreasing uric acid concentration in blood.

SINTESIS DAN KARAKTERISASI KOMPOSIT KAOLIN-Cr2O3 SERTA PEMANFAATANNYA SEBAGAI FOTOKATALIS DALAM MENDEGRADASI ZAT WARNA REMAZOL BRILLIANT ORANGE Ni Luh Eka Anggarayanti; I Nengah Simpen; Ni Gusti Ayu Made Dwi Adhi Suastuti
Jurnal Kimia (Journal of Chemistry) Vol. 11. No. 1 Januari 2017
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Komposit kaolin-Cr2O3 telah disintesis dan dikarakterisasi luas permukaan spesifik secara metode adsorpsi biru metilen, kristalinitas dan ukuran kristal secara X-RD dan gugus fungsi menggunakan FT-IR. Luas permukaan spesifik kaolin-Cr2O3 mengalami peningkatan sebesar 1,9822 m2/g dibandingkan dengan kaolin. Hasil X-RD diperoleh 2? spesifik dari Cr2O3 pada kaolin-Cr2O3 dengan pergeseran puncak 2? = 35,960 dan 41,900. Ukuran kristal kaolin dan kaolin-Cr2O3 dihitung menggunakan persamaan Scherrer dan dihasilkan ukuran kristal berturut-turut 32,63 nm dan 29,33 nm. Spektra inframerah menunjukkan adanya gugus spesifik dari Cr2O3 pada bilangan gelombang 653,87 cm-1 dan 613,36 cm-1. Kondisi optimum fotodegradasi zat warna remazol brilliant orange oleh 0,5 gram komposit kaolin-Cr2O3 terjadi pada menit ke-50 dengan konsentrasi zat warna 50 ppm dan persentase degradasi zat warna remazol brilliant orange 81,49 ± 0,57% lebih besar dibandingkan degradasi oleh Cr2O3 (11,97 ± 2,58%).

ISOLASI DAN IDENTIFIKASI GOLONGAN FLAVONOID PADA EKSTRAK ETIL ASETAT DAUN GEDI (Abelmoschus manihot L.) C. T. Theodora; I W. G. Gunawan; I M. D. Swantara
Jurnal Kimia (Journal of Chemistry) Vol.13 No.2 Juli 2019
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

The purpose of this experiment was to determine the flavonoid compounds in ethyl acetat extract of gedi leaves (Abelmoschus manihot L.). In this study, the method of extraction was maceration with semipolar solvent (ethyl acetat), flavonoid phytochemical screening, separation and purity test with chromatography and then identification of the compound using FTIR and UV-Vis spectrophotometer with shear reagent method. Analysis of FTIR spectra showed some functional groups such as OH, CH aliphatic, C = O, CO alcohol, C = C aromatic, and CO ether, whereas the analysis with UV-Vis spectra indicated the presence of band I at a wavelength of 409.4 nm and 238.40 nm for band II which is the auron specific wavelength. After the addition of shift reaget, there was a substitutions of OH groups in C-4, C-6 and C-3' and OR at C-4'. The flavonoid compounds contained in ethyl acetate extract of gedi leaf is suggested to be auron, 3',4,6-trihydroxy,4-alkoxy-auron. Keywords: auron, ethyl acetat extract, flavonoids, gedi leaf, isolation

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Ni Putu Diantariani

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Home Page

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Contact Name Ni Putu Diantariani

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

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Contact Name
Ni Putu Diantariani

Contact Email
jurnalkimia@unud.ac.id

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+628123640424

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jurnalkimia@unud.ac.id

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

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Kota denpasar,

Bali

INDONESIA