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INDONESIA
JURNAL KIMIA SAINS DAN APLIKASI
Published by Universitas Diponegoro
ISSN : 14108917     EISSN : 25979914     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering
urnal Kimia Sains dan Aplikasi (p-ISSN: 1410-8917) and e-ISSN: 2597-9914) is published by Department of Chemistry, Diponegoro University. This journal is published four times per year and publishes research, review and short communication in field of Chemistry.
Arjuna Subject : -
Articles 796 Documents
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Improvement of Bioactivity with Nanoparticle Fabrication: Cytotoxic Test of Ethanol, N-Hexane and Ethyl Acetate Extract from Red Galangal Rhizome (Alpinia purpurata (Vieill.) K. Schum) in Bulk and Nanoparticle size using BSLT Method Enny Fachriyah; Dewi Kusrini; Pratama Jujur Wibawa
Jurnal Kimia Sains dan Aplikasi Vol 21, No 1 (2018): Volume 21 Issue 1 Year 2018
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (298.725 KB) | DOI: 10.14710/jksa.21.1.39-43

Abstract

Some of the secondary metabolites present in red algae are terpenoids, quinones, flavonoids, alkaloids, essential oils, diarylheptanoids, steroids, cardioglycosides, oils and fats, tannins, carbohydrates. Activity of rhizomes, leaves and flowers red leaf is as antimicrobial, anti-fungal, anti-oxidants, anti-tumor, anti-cancer and vasodilator. One way to improve the physical, chemical and bioactivity properties of natural compounds was to make them into nanoparticles. In this study, the isolation of bioactive compounds contained in red laos rhizome by maceration method using ethanol solvent was done, then partitioned with n-hexane and ethyl acetate. The extracts thus obtained are fabricated into nanoparticles. Extracts in bulk and nanoparticles were then tested for cytotoxic activity using BSLT method. Results of analysis with PSA showed that ethanol extract had size 410,8 nm, n-hexane extract 220,7 nm and ethyl acetate extract 208,3 nm. The results of cytotoxic tests showed that nanoparticle size increased cytotoxic activity. Ethyl acetate extract was most active compared to ethanol and n-hexane extracts with LC50values of 17.919; 84,956; 166,526 ppm. Whereas the nanoparticle size was respectively 10,491; 74,072 and 84,197 ppm. Cytotoxic activity increases with nanoparticle fabrication. 
Preparasi Katalis Zeolit Alam Asam sebagai Katalis dalam Proses Pirolisis Katalitik Polietilena Windarti, Tri; Suseno, Ahmad
Jurnal Kimia Sains dan Aplikasi Vol 7, No 3 (2004): Volume 7 Issue 3 Year 2004
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (251.038 KB) | DOI: 10.14710/jksa.7.3.72-77

Abstract

Telah dilakukan penelitian tentang preparasi katalis zeolit alam asam sebagai katalis dalam proses pirolisis katalitik polietilena. Katalis zeolit alam asam dibuat melalui aktivasi dan kalsinasi zeolit alam Wonosari yang meliputi perendaman dalam larutan HF 1 %, perlakuan HCl, perendaman dalam larutan NH4Cl dan kalsinasi dengan dan tanpa gas N2. Proses kalsinasi dilakukan pada temperatur 500 C. Karakter katalis yang meliputi rasio Si/Al, keasaman, luas permukaan, volume pori dan rerata jejari pori, masing-masing ditentukan dengan Spektroskopi Serapan Atom (AAS), metode adsorpsi NH3 dan alat penganalisis luas permukaan. Hasilnya adalah preparasi telah meningkatkan keasaman zeolit sebesar 132,5 %, rasio Si/Al sebesar 146,9 %, luas permukaan sebesar 748 %, volume pori sebesar 98 % dan menurunkan rerata jejari pori sebesar 76 %. Proses pirolisis dan proses pirolisis katalitik dilakukan dengan reactor bach dan produk cair dianalisis dengan GC dan GC-MS serta FTIR. Produk proses pirolisis polietilena adalah olefin C9 – C15 sedangkan produk pirolisis dengan katalis zeolit alam asam adalah olefin C5 – C12.
Inovasi Penyisipan Karbon dari Pektin pada Pembuatan Membran Interlayer-free Silika-pektin Amalia Enggar Pratiwi; Muthia Elma; Meilana Dharma Putra; Agus Mirwan; Aulia Rahma; Erdina Lulu Atika Rampun
Jurnal Kimia Sains dan Aplikasi Vol 22, No 3 (2019): Volume 22 Issue 3 Year 2019
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2567.594 KB) | DOI: 10.14710/jksa.22.3.93-98

Abstract

Water scarcity is the main issues in Indonesia especially for coastal areas. As a consequence, the water has high salinity of >50.000 ppm salt concentration where an appropriate treatment is necessary before consumed. In this case, desalination process could be carried out using inorganic silica membranes. However, during the process the pore of silica membranes were collapsed due to the directly contact of pores to water molecules for a long term performance. Thereby, in this work the innovation of membrane fabrication using carbon templated in silica matrices has been successfully fabricated. Literally, the carbon templates could be improving the membrane hydro-stability. The interlayer-free silica-pectin membrane was fabricated using TEOS as silica precursor and carbon templated from pectin apple. All membranes waere calcined in variance temperature of 300 and 400°C via Rapid Thermal Processing (RTP). The FTIR results show some functionalization of siloxane, silanol and a new bond of silica-carbon. Whereas, the SEM images show the membrane morphology that the membrane not dense and crack-free with thin film's thickness of ~ 1 μm. An excellent condition of interlayer-free silica-pectin membrane was obtained at pectin concentration of 2.5 %wt. (300°C) and 0.5 %wt. (400°C) with highest functionalization of siloxane and silica-carbon bonds. The existence of silica-carbon bonds were capable to enhancing the membrane hydro-stability. In addition, the carbon chains were contributed to form a smaller pores but also robust pore structures. Those fabricated membranes were shown a good promising due to fast and low cost fabrication with high quality to applicate in seawater desalination.
Waktu Optimum pada Reaksi Veratraldehid dan Anilin Ditya Putri Solihati; Enny Fachriyah; Ismiyarto Ismiyarto
Jurnal Kimia Sains dan Aplikasi Vol 14, No 3 (2011): Volume 14 Issue 3 Year 2011
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (243.827 KB) | DOI: 10.14710/jksa.14.3.69-71

Abstract

Imina merupakan senyawa dengan gugus fungsi C=N yang mempunyai potensi sebagai antibakteri, antikanker, antijamur, antitumor dan antimalaria. Sintesis imina dapat dilakukan menggunakan bahan dasar aldehida dan amina primer. Pada penelitian ini, digunakan veratraldehid dan anilin. Tujuan penelitian ini adalah mensintesis 3,4 dimetoksibenzilimina dan menentukan waktu reaksi optimum dari proses sintesis tersebut. Kemurnian produk sintesis berdasarkan pengujian titik leleh. Penentuan hasil sintesis maksimum dilakukan dengan variasi waktu pelarutan. Hasil penelitian menunjukkan bahwa produk sintesis belum murni. Waktu reaksi optimal sintesis yaitu pada 140 menit dengan rendemen sebesar 60,5%.
Optimasi Waktu Destilasi Uap dan Identifikasi Komponen Minyak Kulit Jeruk Siam (Citrus Nobilis L.) Fachriyah, Enny; Sumardjo, Damin; Kurnia, Any
Jurnal Kimia Sains dan Aplikasi Vol 5, No 1 (2002): Volume 5 Issue 1 Year 2002
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2412.884 KB) | DOI: 10.14710/jksa.5.1.12-14

Abstract

Aroma jeruk banyak digunakan dalam berbagai produk makanan, minuman, kosmetika dan farmasi. Aroma jeruk alami berasal dari minyak atsiri, mudah diperoleh dari kulit buah jeruk. Salah satu jeruk yang banyak dimanfaatkan sebagai minuman adalah jeruk Siam. Sisa pembuatan minuman jeruk dapat dimanfaatkan sebagai penghasil minyak atsiri. Isolasi minyak atsiri dari kulit jeruk siam (Citrus nobilis L) telah dilakukan dengan metode distilasi uap. Waktu distilasi divariasi untuk menentukan waktu optimum. Selanjutnya ditentukan rendemen minyak yang diperoleh, indeks bias dan berat jenis. Komponen minyak kulit jeruk Siam diidentifikasi dengan GC-MS. Hasil penelitian menunjukkan bahwa waktu optimum untuk distilasi minyak kulit jeruk Siam adalah 4 jam dengan rendemen 1,234%. Indeks bias minyak pada 20°C sebesar 1,4705 dan berat jenis pada 25°C sebesar 0,8339. Data GC-MS menunjukkan dalam minyak kulit jeruk Siam terdapat lima komponen yang berhasil diidentifikasi yakni α-pinen, β-pinen, mirsen, limonen dan linalool.
Demetilasi Senyawa N-metilpiridinium iodida dengan Pemanasan pada Pelarut Polar Aprotik Cahyono, Bambang; Ismiyarto, Ismiyarto; Suradi, Agus; Suzery, Meiny
Jurnal Kimia Sains dan Aplikasi Vol 3, No 1 (2000): Volume 3 Issue 1 Year 2000
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2838.951 KB) | DOI: 10.14710/jksa.3.1.147-181

Abstract

Reaksi Demetilasi dengan anion iodida telah dilakukan terhadap senyawa N-Metilpiridinium Iodida. Reaksi berlangsu pada Suhu titik didih asetonitril, 82 Celsius. Analisis Produk Reaksi dengan Spktrofotometer UV-Vis, mengindikasikan bahwa reaksi demetilasi garam N-metilpiridinium iodida telah berlangsung. hasil Penelitian menunjukan bahwa amonium heterosiklik aromatik lebih mudah terdemetilasi daripada amonium heterosiklik nanoaromatik.
Inhibitory Activity of HEp-2 Cells by Honey from Indonesia La Ode Sumarlin; Anna Muawanah; Farhan Riza Afandi; Adawiah Adawiah
Jurnal Kimia Sains dan Aplikasi Vol 22, No 6 (2019): Volume 22 Issue 6 Year 2019
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3698.421 KB) | DOI: 10.14710/jksa.22.6.317-325

Abstract

Indonesian local honey contains active compounds that have the potential as an antioxidant and anticancer, primarily as a laryngeal anticancer through the inhibition of HEp-2 cells. This study aims to determine the anticancer activity of several types of honey in Indonesia through the inhibition of HEp-2 cells. Samples used in the form of Trigona, Longan, Rambutan, and Kaliandra honey obtained from honey farmers in Sulawesi and Java, Indonesia. Honey samples extracted by using methanol, then liquids partition was carried out consecutively using n-hexane and ethyl acetate. The cytotoxicity test for HEp-2 cells was carried out using the MTT method (3- (4,5-dimethyl thiazol-2-il) -2,5-diphenyl tetrazolium bromide). The results showed that all honey samples were active against preventing HEp-2 cells with the highest inhibition activity from longan honey with ethyl acetate extract at 65.18% at 100 ppm. Longan honey has decreased HEp-2 cell inhibitory activity after fractionation. Indonesian local honey, namely trigona honey, kaliandra honey, rambutan honey, and longan honey, can be used as a supplementary supplement for patients with laryngeal cancer.
Pengaruh Diameter Kanal Pelet Katalis Zeolit Aktif dan Ni-Zeolit terhadap Pirolisis Limbah Batang Pohon Sagu (Metroxylonsp.) Fitri Lutfiana Rahayu; Rahmad Nuryanto; Linda Suyati
Jurnal Kimia Sains dan Aplikasi Vol 16, No 1 (2013): Volume 16 Issue 1 Year 2013
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (477.352 KB) | DOI: 10.14710/jksa.16.1.33-37

Abstract

Telah dilakukan pirolisis limbah batang sagu dengan katalis zeolit aktif dan Ni-zeolit dengan variasi diameter kanal pelet katalis. Pengaktifan zeolit alam dilakukan dengan perendaman HF 1%, HCl 1N (masing-masing selama 4 jam), pencucian dengan akuabides, dan dikalsinasi. Zeolit aktif diimpregnasi dengan larutan garam NiCl2.6H2O, dikalsinasi, dioksidasi, dan direduksi. Hasil pengaktifan zeolit dan impregnasi dibentuk pelet dengan diberi lubang/kanal dengan variasi 0,6; 0,7; 0,8; 0,9; dan 1mm dan digunakan sebagai katalis dalam proses pirolisis. Pirolisis katalitik dilakukan pada temperatur 4000C. Keasaman Ni-zeolit meningkat sebesar 12 kali tetapi adanya penurunan luas permukaan sebesar 4,72%, Persentasi kristalinitas naik sebesar 7,40%. Penggunaan katalis Ni-Zeolit meningkatkan biooil sebesar 40,388% dibanding zeolit aktif, biooil dengan katalis zeolit aktif didapatkan hasil optimum pada diameter kanal pelet 1mm yaitu 30,468%, sedangkan dengan katalis Ni-zeolit hasil optimum pada diameter kanal 0,7 yaitu 43,52%. Produk utama hasil cair antara penggunaan katalis zeolit aktif maupun Ni-zeolit memiliki 5 senyawa hidrokarbon dengan kelimpahan paling besar yaitu asam asetat, fenol, metanol, 1-hidroksi 2-propanon, dan metil asetat.
Senyawa Naringenin 7, 3’, 4’ -Trimetil Eter dari Daun Tanaman Pacar Cina (Aglaia Odorata Lour) Kusrini, Dewi; Kosela, Soleh; Chairul, Chairul
Jurnal Kimia Sains dan Aplikasi Vol 2, No 2 (1999): Volume 2 Issue 2 Year 1999
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5339.871 KB) | DOI: 10.14710/jksa.2.2.67-72

Abstract

Senyawa Naringenin, 7, 3’, 4', - trimetil eter berhasil diisolasi dari fraksi n-heksana ekstrak daun Pacar cina. Senyawa tersebut diisolasi dengan cara kolom kromatografi (KK) dan kromatografi cair kinerja tinggi (KCKT) serta ditentukan struktur molekulnya dengan menggunakan metode spektroskopi.
Pengaruh Temperatur Kalsinasi pada Modifikasi Lempung dengan Oksida Aluminium sebagai Pemilar Wahyu Sri Kunto Nugroho; Ahmad Suseno; Priyono Priyono
Jurnal Kimia Sains dan Aplikasi Vol 17, No 2 (2014): Volume 17 Issue 2 Year 2014
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (743.482 KB) | DOI: 10.14710/jksa.17.2.43-47

Abstract

Telah dilakukan penelitian mengenai pengaruh temperatur kalsinasi pada modifikasi lempung dengan oksida aluminium sebagai pemilar menggunakan metode pilarisasi tak langsung. Hasil XRD menunjukkan bahwa jenis lempung yang digunakan adalah Ca-montmorilonit (Ca-MMT). Modifikasi montmorilonit menggunakan surfaktan CTAB berhasil dilakukan dengan peningkatan nilai basal spacing d001 sebesar 0,47 nm. Temperatur kalsinasi pada modifikasi montmorilonit dengan oksida aluminium sebagai pemilar di atas 350°C menyebabkan bidang d001 montmorilonit rusak. Produk Al2O3-MMT yang dikalsinasi menggunakan temperatur 350°C memiliki nilai basal spacing d001 sebesar 1,28 nm.

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