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Jurnal Kimia Riset
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Articles 190 Documents
Penentuan Kapasitas Adsorpsi Selulosa Terhadap Rhodamin B dalam Sistem Dinamis Asnawati Asnawati; Resty Rukmi Kharismaningrum; Novita Andarini
Jurnal Kimia Riset Vol. 2 No. 1 (2017): Juni
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (630.803 KB) | DOI: 10.20473/jkr.v2i1.3553

Abstract

AbstrakPenelitian ini bertujuan untuk menentukan kapasitas adsorpsi selulosa, massa optimum dan pH optimum. Kapasitas adsorbsi ditentukan dengan sistem dinamis dengan kecepatan 1 mL/12 menit melalui kolom, diameter 8 mm mengandung selulosa. Metoda ini dibuat dengan menvariasikan massa adsorbent dan pH Rhodamine B. kapasitas adsorpsi selulosa ditentukan dengan menggunakan persamaan Thomas. kurva Breakthrough digunakan untuk mengetahui keefektifan kolom dalam mengadsorpsi Massa adsorben divariasikan sebesar 0,1; 0,2; dan 0,3 gram serta pH larutan influen divariasikan pada pH 5, 6 dan 7. Massa adsorben dan pH larutan influen dengan kapasitas adsorpsi paling optimum adalah massa 0,3 gram dan pH 7. Kapasitas adsorpsi selulosa terhadap Rhodamin B sebesar 5, 94 mg/g. Kata kunci: Adsorpsi, Rhodamin B, selulosa, sistem dinamis AbstractThis study is to determine the adsorption capacity of the cellulose to Rhodamine,  the mass optimum and pH optimum. Cellulose adsorption capacity is determined in a dynamic method with a flow rate of 1 mL/12 minutes through the column, diameter of 8 mm, containing cellulose. This method was made variations of the mass of adsorbent and the pH of the influent Rhodamine B solution. Determination of the adsorption capacity of cellulose in this study used the model equations Thomas. Breakthrough curves were used to determine the effectiveness of the column in which cellulose adsorb.  Mass adsorbent and the pH of the influent with the highest adsorption capacity is mass of 0.3 grams and pH 7. The adsorption capacity of cellulose to Rhodamine B is 5,94 mg/g Keywords: Adsorption, Rhodamine B, cellulose, dynamic system
Gambaran Histopatologi Hepar Tikus Putih (Rattus Novergicus) yang Diinduksi dengan Parasetamol dosis Toksik Pasca Pemberian Ekstrak Etanol Daun Kelor (Moringa Oleifera) Noer Kumala I
Jurnal Kimia Riset Vol. 2 No. 2 (2017): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (685.405 KB) | DOI: 10.20473/jkr.v2i2.6700

Abstract

Hepar tempat utama metabolisme obat yang disebut juga sebagai biotransformasi dan hasil akhir dari reaksi ini berupa substansi yang tidak aktif dan lebih larut dalam air, sehingga cepat diekskresi melalui empedu dan urin. Setiap gangguan hati dapat menghambat fungsi normal tubuh. Kerusakan sel-sel hepar dapat disebabkan antara lain oleh obat, virus, dan berbagai senyawa kimia lain mempunyai daya hepatotoksik, antara lain adalah parasetamol.Penelitian ini menggunakan 5 kelompok Tikus Putih (masing-masing kelompok 5 ekor tikus) yang diinduksi parasetamol dosis toksik kemudian diberikan ekstrak Etanol Daun Kelor (Moringa Oleifera) dengan dosis 250mg/200BB, 500mg/200 BB, dan 1000mg/200BB selama 7 hari untuk kelompok P1, P2 dan P3 sedangkan kelompok Kontrol positif hanya diberi pakan dan minum biasa, serta kelompok control negatif hanya diberikan parasetamol dosis toksik saja. Hasil penelitian menunjukkan bahwa kelompok perlakuan P3 dengan pemberian ekstrk etanol dosis tinggi yaitu 1000 mg/200 BB dapat melindungi hepar tikus yang telah diinduksi dengan parasetamol dosis toksik, hal ini dapat dibuktikan dengan melihat gambaran histopatologi hepar tikus yang mengalami pengurangan baik dari sisi peradangan, nekrosis maupun degenerasi.
Celery herb essential oil in the formulation of anti-dandruff hair tonic against Pityrosporum ovale Riska Surya Ningrum; Antonius Budi Prasetyo; Alfinda Novi Kristanti
Jurnal Kimia Riset Vol. 2 No. 2 (2017): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (333.868 KB) | DOI: 10.20473/jkr.v2i2.6197

Abstract

Abstract Essential oil from Apium graveolens (celery), a species belonged to Apiceae, was isolated, identified, and tested its activity against fungi Pityrosporum ovale, fungi that cause dandruff problem. Essential oil isolation was conducted by steam distillation. The identification with GC-MS showed that the major compound of celery essential oil was 3-isobutylidenphalide. The anti-fungal activity test was performed using pure celery oil and celery oil added with virgin coconut oil (VCO) and paraffin oil that are usually used as components in hair tonic formulation. The bioactivity test showed that celery oil, whether in pure form or in hair tonic formulation exhibited excellent growth inhibition activity of Pityrosporum ovale Keywords : essential oil, celery, Apium graveolens, hair tonic, anti-dandruff, Pityrosporum ovale
Identification of Species and Fatty Acid Composition of Microalgae from Raas Beach Sendang Biru Malang and Their Potential as Biodiesel Feedstock Eli Hendrik Sanjaya; Alifah Novitasari; Parlan Parlan; Laurent Octaviana; Dermawan Afandy; Sitoresmi Prabaningtyas
Jurnal Kimia Riset Vol. 2 No. 1 (2017): Juni
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (686.015 KB) | DOI: 10.20473/jkr.v2i1.4449

Abstract

Biodiesel is one of the best renewable energy made from triglycerides. Microalgae has a high lipid content include triglycerides, so it can be used as raw material for biodiesel production. Malang has many of beaches which are potent to become sources of microalgae, several beaches are surrounding Sendang Biru. The aims of this research were to identify the species of microalgae from Raas Beach Sendang Biru, determine their yield of lipid and fatty acid composition, and analyse their potential to became feedstock of biodiesel production. This research consists of five stages: identification of microalgae, cultivation, harvesting, determination of the yield of microalgae lipid by soxhlet extraction method, and analysis of the fatty acid composition of lipid by GC-MS. The results showed that the species of microalgae are dominated by Euglena sp and small amount of Gloeocapsa. The lipid yield of dried microalgae is 7.5% and the fatty acids composition are dodecanoic acid (1.6%), tetradecanoic acid (1.3%), hexadecanoic acid (16.6%), 9,12-octadecadienoic acid (25.2%), 9-octadecenoic acid (29.8%), and octadecanoic acid (6.7%). Based on this results, it can be concluded  that the microalgaes from Raas Beach Sendang Biru are potential to become biodiesel feedstock but it still need optimization.
EKSPLORASI GEN ENZIM LIPASE PADA TANAH PENGOLAHAN LIMBAH KELAPA SAWIT DENGAN PENDEKATAN METAGENOMIK Sri Sumarsih; Andre Pratama; Afaf Baktir
Jurnal Kimia Riset Vol. 2 No. 1 (2017): Juni
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (687.926 KB) | DOI: 10.20473/jkr.v2i1.3687

Abstract

Abstrak            Enzim lipase merupakan bagian dari enzim hidrolase yang bekerja pada ikatan ester. Enzim ini juga mengkatalisis beberapa jenis reaksi sehingga merupakan enzim yang potensial diaplikasikan ke berbagai bidang seperti industri tekstil, kulit, deterjen, makanan, dan lain-lain. Salah satu cara mendapatkan enzim novel ialah dengan pendekatan secara metagenomik dari sampel lingkungan tanpa melalui kultur di dalam laboratorium. Sampel lingkungan yang biasa diteliti ialah memiliki keadaan ekstrem atau memiliki sumber substrat enzim yang ingin dieksplorasi. Pada penelitian ini dilakukan eksplorasi gen enzim lipase pada tanah hasil pengolahan limbah kelapa sawit (POME) melalui pendekatan metagenomik menggunakan desain primer degenerate untuk gen enzim lipase untuk golongan HSL. Didapatkan fragmen gen lipase yang memiliki ukuran 250-300 pasang basa dan dilakukan kloning ke dalam plasmid pET-30a(+) dengan sel inang E. coli TOP10 menghasilkan pustaka fragmen lipase limbah sawit (PFL2S) sebanyak 26 klon.  Kata kunci: Lipase, metagenomik, primer degenerate
OPTIMASI JENIS DAN KADAR SUMBER NITROGEN SERTA pH MEDIUM UNTUK PRODUKSI PROTEASE DARI ISOLAT HTcUM6.2.2 DARI TAUCO SURABAYA Monika Rahayu; Evi Susanti
Jurnal Kimia Riset Vol. 2 No. 2 (2017): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (468.695 KB) | DOI: 10.20473/jkr.v2i2.6307

Abstract

AbstrakPenelitian ini bertujuan untuk  mengetahui sumber nitrogen, kadar sumber nitrogen dan pH optimum untuk produksi protease isolat HTcUM6.2.2. Penelitian ini merupakan penelitian eksperimental laboratoris menggunakan Rancangan Acak Lengkap (RAL) satu faktorial masing-masing yaitu jenis, kadar sumber nitrogen, serta pH medium dengan tahap penelitian terdiri dari peremajaan, validasi kemurnian isolat HTcUM6.2.2, produksi ekstrak kasar protease isolat HTcUM6.2.2,  uji aktivitas protease. Hasil penelitian menunjukkan sumber nitrogen optimum untuk menghasilkan protease dari isolat HTcUM6.2.2 adalah susu skim dan limbah cair tahu. Kadar limbah cair tahu optimum untuk produksi protease dari isolat HTcUM6.2.2 sebesar 10 %. Produksi protease cukup tinggi dan  relatif konstan antara pH 6 sampai 8.  Aktivitas protease tertinggi sebesar 0,817 U/ml dicapai dengan penggunaan 10 % limbah cair tahu pada medium produksi, pH = 7 selama 3 hari. Kata kunci: protease, tauco, isolat, nitrogen, limbah cair tahu   AbstractThis study aims to determine the optimum of the nitrogen source, percentage of nitrogen source and pH for the production of protease from isolate HTcUM6.2.2. This research is a laboratory experimental with a research stage comprising inoculation and validation of the purity of the isolates HTcUM6.2.2, production of crude extract of protease to determine source of nitrogen, percentage of nitrogen source and pH optimum, determination of protease activity. The results showed that the optimum source of nitrogen to produce proteases from the HTcUM6.2.2 isolate was skim milk and tofu wastewater. Percentage of nitrogen source optimum to produce protease of  HTcUM6.2.2 isolate was 10 % of tofu wastewater. Protease production is relatively high and constantance at pH 6 to 8. The highest protease activity was achieved by the use of 10 % tofu wastewater at production medium, pH = 7 for 3 days was 0,817 U/mL. The keywords: protease, tauco, isolate, nitrogen, tofu wastewater
REPARASI DAN KARAKTERISASI ALFA-Fe2O3 /ZEOLIT Y UNTUK REAKSI PERENGKAHAN ASAM PALMITAT Abdulloh Abdulloh; Purkan Purkan; Nizar Hardiansyah
Jurnal Kimia Riset Vol. 2 No. 2 (2017): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (558.338 KB) | DOI: 10.20473/jkr.v2i2.6166

Abstract

Telah dilakukan preparasi dan karakterisasi a-Fe2O3/zeolite Y sebagai katalis uji reaksi perengkahan asam palmitat. Zeolit A disintesis dari NaOH, NaAlO2 dan TEOS dengan metode kristalisasi bertahap. Katalis alfa-Fe2O3/zeolite Y disiapkan melalui metode impregnasi menggunakan larutan Fe(NO3)3 1 M dan proses kalsinasi pada suhu 500 oC dengan dialiri gas N2 selama 5 jam. Katalis dikarakterisasi dengan XRD, FTIR dan surface area analyzer menggunakan metode BET. Uji aktivitas katalis dilakukan pada suhu 380 – 400 oC. Analisis GC-MS terhadap hasil reaksi perengkahan menunjukkan terbentuknya senyawa-senyawa hidrokarbon seperti alkana dan alkena yang memiliki rantai karbon lebih pendek dari asam palmitat atau biogasoline
SINTESIS DAN KARAKTERISASI SENYAWA KOMPLEKS Zn(II)-EDTA SEBAGAI SENAYAWA ANTIALGA PADA COOLING WATER INDUSTRI Harsasi Setyawati; Sri Sumarsih; Sevia Ayuningtyas
Jurnal Kimia Riset Vol. 2 No. 1 (2017): Juni
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1030.612 KB) | DOI: 10.20473/jkr.v2i1.3689

Abstract

ABSTRACTA research on the synthesis and characterization of complex compounds of Zn (II)-EDTA as antialgae compound is applied to the cooling water industry. This research aims to determine the activity of complex compounds of Zn (II)-EDTA against algae that live in the water cooling water. The activity antialgae assay of comple compound of Zn(II)-EDTA with luminescence method and dry cell weight method. Complex compound of Zn (II)-EDTA made with mole ratio of ZnCl2: Na2EDTA is 1:1. Complex compound of Zn (II)-EDTA analyzed using UV-Vis spectrophotometer and FTIR spectrophotometer. The results of UV-Vis spectrophotometer analysis showed that the complex compounds of Zn (II)-EDTA has a maximum wavelength at 752 nm. While the results of FTIR analysis showed  Zn-O vibration absorption at wave number 478.35 cm-1 and Zn-N vibration absorption at wave number 516.92 cm-1. In the activity antialgae assay of complex compound of Zn (II)-EDTA made with a concentration of 5 ppm, 10 ppm, 50 ppm and 100 ppm. The test results showed that the activity of complex compounds of Zn (II) -EDTA can kill green algae and brown algae. Of the four concentrations of complex compounds of Zn (II)-EDTA, green algae and brown algae can be killed optimally at a concentration of 50 ppm.Keywords: complex Zn(II)-EDTA, cooling water, antialgae, green algae, brown                   algae 
Lactobacillus bulgaricus Sebagai Probiotik Guna Peningkatan Kualitas Ampas Tahu Untuk Pakan Cacing Tanah Purkan Purkan; Nur Nisdiyatul Laila; Sri Sumarsih
Jurnal Kimia Riset Vol. 2 No. 1 (2017): Juni
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (791.751 KB) | DOI: 10.20473/jkr.v2i1.3688

Abstract

AbstrakPenelitian ini bertujuan untuk menentukan aktivitas protease dari probiotik Lactobacillus bulgaricus dan pengaruh probiotik Lactobacillus bulgaricus dalam fermentasi pakan ampas tahu untuk meningkatkan produktivitas cacing tanah. Metode yang digunakan untuk penentuan aktivitas protease dalam hidrolisis substrat kasein adalah metode Bradford. Dari hasil penelitian, probiotik Lactobacillus bulgaricus mengeluarkan protease selama 18 jam pertumbuhan, dengan aktivitas protease sebesar 131,04 U/mL. Probiotik Lactobacillus bulgaricus OD 0,6 dapat menghidrolisis protein ampas tahu sebesar 1,48 µg/mL dalam 12 jam fermentasi. Produktivitas cacing tanah mengalami peningkatan berat cacing tanah karena adanya pengaruh probiotik Lactobacillus bulgaricus pada pakan ampas tahu yang ditunjukkan dengan persen kenaikan berat cacing tanah sebesar 32,13%.Kata kunci: Probiotik, Lactobacillus bulgaricus, Enzim protease, Cacing tanah
The Influence of pH Values on the Crystallite Size of ZnO by Solvothermal Synthesis Ahmadi Jaya Permana; Dian Wulandari; Hartati Hartati; Harsasi Setyawati; Mochammad Zakki Fahmi
Jurnal Kimia Riset Vol. 2 No. 2 (2017): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (222.782 KB) | DOI: 10.20473/jkr.v2i2.6430

Abstract

 Zinc oxide (ZnO) is a semiconductor material that widely used in various applications due to its unique properties. Synthesis of ZnO by solvothermal method has been conducted with controlled pH values. The variations of pH value were 10, 11 and 12 by adjusting NaOH content. Crystall structure of the synthesis products after heat treatment at 110oC and 600oC has characterised by X-ray Diffratometer (XRD). Crystallite size of ZnO was measured by Scherrer equation. Crystall phase of ZnO has been observed on all pH value variations at 110 oC with 22,98-37,06 nm of crystallite size, whereas ZnO has been observed on all pH value variations at 600 oC with 41,39-71,77 nm of crystallite size.Keywords: ZnO, pH values, crystallite size, solvothermal

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