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HIDRODISTILASI MINYAK JAHE (Zingiber officinale Rosc.) Supardan, Muhamad Dani; Ruslan, Ruslan; Satriana, Satriana; Arpi, Normalina
REAKTOR Volume 12, Nomor 4, Desember 2009
Publisher : Dept. of Chemical Engineering, Diponegoro University

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Abstract

Penelitian tentang penyulingan minyak jahe dengan metode hidrodistilasi menggunakan gelombang ultrasonik telah dilakukan. Variabel proses yang diamati adalah perbandingan pelarut air dan bubuk jahe atau SF rasio (8:1, 10:1, 12:1 dan 14:1) dan temperatur hidrodistilasi (80, 85, 90 dan 95oC). Proses hidrodistilasi dilakukan menggunakan ultrasonic bath dengan frekuensi 37 kHz. Sebagai pembanding dilakukan juga proses hidrodistilasi tanpa bantuan ultrasonik. Minyak jahe yang diperoleh berupa cairan berwarna kuning terang dengan aroma jahe yang khas. Hasil penelitian menunjukkan hidrodistilasi tanpa bantuan ultrasonik hanya dapat mengekstrak 49% minyak atsiri dalam bahan, sedangkan hidrodistilasi dengan bantuan ultrasonik mampu mengekstrak hingga 84% minyak atsiri dalam bahan pada kondisi temperatur 80oC dan SF rasio 12:1. Hasil analisis dengan kromatografi gas menunjukkan komponen dengan komposisi tertinggi dalam minyak jahe hasil hidrodistilasi dengan bantuan ultrasonik adalah Zingiberene. Hasil analisis beberapa parameter terhadap produk menunjukkan minyak jahe sudah memenuhi spesifikasi menurut Standar Nasional Indonesia (SNI) Nomor 06-1312-1998.
Reactive Extraction of Jatropha Seed for Biodiesel Production: Effect of Moisture Content of Jatropha Seed and Co-solvent Concentration Supardan, M. Dani; Satriana, Satriana; Fahrizal, Fahrizal; Moulana, Ryan
International Journal on Advanced Science, Engineering and Information Technology Vol 3, No 3 (2013)
Publisher : International Journal on Advanced Science, Engineering and Information Technology

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Abstract

Biodiesel is one among the promising renewable fuels, holding various advantages compared with fossil fuel. In this study, reactive extraction of jatropha seed for biodiesel production was investigated. The effect of moisture content of jatropha seeds and cosolvent concentration was examined to determine the best performance of the biodiesel production yield. The co-solvent used is hexane. Design of experiments (DOE) was used to study the effect of moisture content of jatropha seed and co-solvent of hexane concentration on the yield of biodiesel. Generally, the moisture content of jatropha seeds and co-solvent concentration affected biodiesel production yield. The experimental result also shows that the transesterification rate was improved when compared to the system without co-solvents. It was found that the production of biodiesel achieved an optimum level of 68.3% biodiesel yield at the following reaction conditions, i.e. moisture content of jatropha seed of 1% and hexane to oil ratio of 6.9 (w/w).
Ekstraksi Oleoresin dari Limbah Penyulingan Pala Menggunakan Ultrasonik Arpi, Normalina; Satriana, Satriana; Rezekiah, Kiki
Jurnal Rekayasa Kimia & Lingkungan Vol 9, No 4 (2013): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

Penelitian ini bertujuan untuk mempelajari pengaruh ukuran partikel limbah penyulingan pala (Myristica fragrans Houtt.) dan suhu ekstraksi terhadap rendemen dan mutu oleoresin pala yang dihasilkan pada proses ekstraksi pelarut menggunakan bantuan ultrasonik. Etanol mutu teknis (technical grade) digunakan sebagai pelarut. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) Faktorial dengan ulangan sebagai kelompok yang terdiri dari ukuran partikel bahan (P) yaitu P1= 10 mesh, P2= 40 mesh dan P3= 60 mesh dan suhu ekstraksi (S) yaitu S1= 40oC, S2= 50oC dan S3= 60oC. Analisis oleoresin pala yang dilakukan meliputi analisis awal (kadar air dan kadar abu) dan analisis akhir (bobot jenis, indeks bias, dan sisa pelarut). Hasil penelitian menunjukkan ukuran partikel dan suhu ekstraksi berpengaruh terhadap rendemen dan mutu oleoresin yang dihasilkan. Rendemen tertinggi sebesar 7,16% diperoleh pada  ukuran partikel 10 mesh dan suhu 60oC. Hasil analisis bobot jenis oleoresin menunjukkan bahwa bobot jenis tertinggi yaitu 1,250 dihasilkan pada suhu ekstraksi 50oC. Sementara itu, hasil analisis indeks bias oleoresin menunjukkan bahwa ukuran partikel dan suhu ekstraksi memberikan pengaruh yang sangat nyata terhadap oleoresin pala dimana ukuran partikel 40 mesh pada suhu ekstraksi 40oC dan 60oC  serta ukuran partikel 60 mesh pada suhu 50oC memiliki nilai indeks bias yang lebih tinggi yaitu berkisar antara 1,476 hingga 1,480. Hasil analisis sisa pelarut juga menunjukkan bahwa ukuran partikel dan suhu ekstraksi berpengaruh terhadap tingginya sisa pelarut, dimana ukuran partikel 10 mesh mengandung sisa pelarut 0,229% dan suhu ekstraksi 40oC mengandung sisa pelarut 0,265%.
PENGARUH ION KALSIUM (Ca2+) TERHADAP AKTIVITAS PEKTINASE HASIL ISOLASI DARI Bacillus firmus Satriana, Satriana; Roosdiana, Anna; Prasetyawan, Sasangka
Jurnal Ilmu Kimia Universitas Brawijaya Vol 2, No 1 (2014)
Publisher : Jurusan Kimia, FMIPA Universitas Brawijaya

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Abstract

Pektinase merupakan enzim hidrolase yang mampu memecah ikatan α-1,4 glikosidik pada poligalakturonat menjadi asam galakturonat. Pektinase dapat diproduksi dari berbagai macam mikroorganisme seperti Aspergillus niger dan Bacillus firmus. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penambahan ion Ca2+ terhadap aktivitas pektinase dari Bacillus firmus dan menentukan parameter kinetika. Pektinase yang digunakan berupa ekstrak kasar. Pengukuran kadar protein pektinase dilakukan menggunakan reagen Biuret dan asam galakturonat menggunakan reagen DNS secara spektrofotometer. Aktivitas pektinase diperoleh dari asam galakturonat yang terbentuk oleh pektinase setiap 1 mL per menit. Pengaruh ion Ca2+ ditentukan pada konsentrasi ion Ca2+ 0, 2, 4, 6, 8, dan 10 mM, sedangkan parameter kinetika ditentukan pada variasi konsentrasi substrat 0,5; 1,0; 1,5; 2,0; dan 2,5 % (b/v). Kadar protein pektinase bebas diperoleh sebesar 1,200 mg/mL. Hasil penelitian menunjukkan bahwa ion Ca2+ bertindak sebagai aktivator. Konsentrasi ion Ca2+ 10 mM dapat meningkatkan aktivitas pektinase dari 0,636 µgmL-1menit-1 menjadi 7,608 µgmL-1menit-1. Parameter kinetika pektinase dengan penambahan Ca2+ 10 mM mempunyai Vmaks sebesar 29,41 U dan KM = 1,91 %. Kata Kunci : Bacillus firmus, Ca2+,  DNS, pektinase
Formulasi Biskuit Kelapa Parut Kering dengan Perlakuan Penyangraian dan Tanpa Penyangraian Lubis, Yanti Meldasari; Satriana, Satriana; Fahrizal, Fahrizal; Darlia, Eni
Jurnal Teknologi dan Industri Pertanian Indonesia Vol 6, No 2 (2014): Vol.(6) No.2, June 2014
Publisher : Agricultural Faculty

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Abstract

The study of the formulation of desiccated coconut biscuits by roasting and without roasting was investigated. This research was conducted using randomized block design consisted of two factors and three replications. The first factor is the percentage of the desiccated coconut addition to wheat flour with three levels (25%, 50% and 75%). The second factor is the variation treatment of the desiccated coconut; roasting and without roasting. The result showed that the percentage of desiccated coconut addition to wheat flour has a significant effect on protein content. The treatment of roasting and without roasting has very significant effect on the peroxide number and significant effect on the moisture content, sensory test (aroma and taste). The interaction factor between the percentage of desiccated coconut addition to wheat flour and the treatment of roasting and without roasting has a very significant effect on the fat content and has a significant effect on the sensory test (aroma and taste). The best formulation of the desiccated coconut biscuits based on the sensory test was obtained from the addition of75% of desiccated coconut without roasting.
THE USE OF VIDEO-CAST TO IMPROVE IMPROVE STUDENTS’ ABILITY IN WRITING NARRATIVE PARAGRAPH OF THE SECOND GRADE STUDENTS Satriana, Satriana
ELTS JOURNAL Vol 4, No 2 (2016)
Publisher : ELTS JOURNAL

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Abstract

The objective of this research is to find out whether the use of video-cast in writing narrative paragraph at the second grade students of SMA Negeri 1 Biromaru can be improved or not. This research used pre-experimental research with intact group design, in which it took two groups as control group and experimental group. Thepopulation was the second grade students of SMA Negeri 1 Biromaru. The samples were Class XI IPA Model as the experimental group consisting of 18 students and Class XI IPA 1 as the control group consisting of 17 students. In collecting the data, the writer used test. The test was used once as the post-test. Then, the data were analyzed statistically. Having analyzed the data, there were different scores obtained from the control group and the experimental group. In other words, the t-counted (5.22) was greater than the t-table (2.0357). It could be concluded that the research hypothesis is accepted. In conclusion, the use of video-cast in English teaching is effective to improve students’ ability in writing narrative paragraph to the second grade students of SMA Negeri 1 Biromaru. Keywords: Video-cast; Narrative paragraph; Writing
Effect of Drying and Hydrodistillation Time on the Amount of Ginger Essential Oil Hasmita, Ida; Adisalamun, Adisalamun; Nurul Alam, Pocut; Satriana, Satriana; Mahlinda, Mahlinda; Supardan, M. Dani
International Journal on Advanced Science, Engineering and Information Technology Vol 5, No 5 (2015)
Publisher : International Journal on Advanced Science, Engineering and Information Technology

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Abstract

The objective of this research is to study the effect of drying and hydrodistillation time on the amount of ginger (Zingiber officinale Rosc.) essential oil. For this purpose, a hydrodistillation laboratory-scale extraction unit was employed. The fresh ginger were dried by air drying for 1, 2 and 4 days at ambient temperature. In general, ginger oil obtained in the form of bright yellow liquid with a distinctive aroma of ginger. The experimental results showed that the yields of the ginger essential oils were affected by the drying time of raw material and hydrodistillation times. The obtained essential oil was analyzed by gas chromatography–mass spectrometry and 12 compounds were identified. The major compounds of ginger essential oil were 1,8-cineole, geranial, geraniol, camphene and neral.
Transesterifikasi In Situ Biji Jarak Pagar Menggunakan Kavitasi Hidrodinamik Supardan, Muhammad Dani; Satriana, Satriana; Moulana, Ryan
Agritech Vol 34, No 1 (2014)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

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Abstract

In this study, the in situ transesterification of jatropha seed using hydrodynamic cavitation for the production of biodieselwas studied. Experiments were carried out under the following conditions: 800 mL of methanol volume, 50oC of reaction temperature, 2 g of potassium hidroxide catalyst, less than 3% of moisture content in jatropha seed and 0,355-1,18 mm of particle size. From experiment without co-solvent addition, the highest biodiesel yield of 35% obtained at condition: time of process of 120 minute and ratio of methanol to jatropha seed of 16 (mL/g) . The use of co-solvent of hexane provided a higher yield of biodiesel compared to the system without co-solvents. The highest biodiesel yield of 60% were obtained under the addition of 95 mL of hexane volume. In addition, the use hydrodynamic cavitation provided a higher yield of biodiesel compared to the system using mechanical stirring. The biodiesel produced in the experiment was analyzed by gas chromatography-mass spectrometry (GC-MS), which showed that methyl oleate was the highest compound in biodiesel.ABSTRAKPenelitian ini bertujuan untuk mempelajari proses produksi biodiesel dari biji jarak pagar melalui proses transesterifikasi in situ menggunakan kavitasi hidrodinamik. Transesterifikasi in situ dilakukan pada kondisi: volume metanol 800 mL, temperatur proses 50oC, katalis kalium hidroksida 2 g, kandungan air biji jarak kurang dari 3% dan ukuran partikel biji jarak 0,355-1,18 mm. Hasil penelitian menunjukkan rendemen biodiesel tertinggi sebesar 35% yang dihasilkan dari proses transesterifikasi in situ biji jarak pagar menggunakan kavitasi hidrodinamik tanpa penambahan co-solvent diperoleh pada penggunaan waktu proses 120 menit dan rasio volume metanol terhadap berat biji jarak 16 (mL/g). Penggunaan co-solvent heksana terbukti dapat meningkatkan rendemen biodiesel yang dihasilkan dimana pada penambahan volume heksana sebanyak 95 mL diperoleh rendemen biodiesel sebesar 60%. Proses transesterifikasi in situ biji jarak menggunakan kavitasi hidrodinamik menghasilkan rendemen biodiesel yang lebih besar dibandingkan proses menggunakan pengaduk mekanik. Hasil analisis gas chromatography-mass spectrometry (GC-MS) menunjukkan komponen terbesar dalam produk biodiesel adalah metil oleat.
Biodiesel Production from Waste Cooking Oil Using Hydrodinamic Cavitation Supardan, Muhammad; Satriana, Satriana; Mahlinda, Mahlinda
Makara Journal of Technology Vol 16, No 2 (2012)
Publisher : Directorate of Research and Community Services, Universitas Indonesia

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Abstract

The aim of this research was to study biodiesel production from low cost feedstock of waste cooking oil (WCO) using hydrodynamic cavitation apparatus. A two-step processes esterification process and transesterification process using hydrodynamic cavitation for the production of biodiesel from WCO is presented. The first step is acid-catalyzed esteri-fication process for reducing free fatty acid (FFA) content of WCO and followed by base-catalyzed transesterification process for converting WCO to biodiesel as the second step. The result of esterification process with methanol to oil molar ratio of 5 and temperature of 60 oC showed that the initial acid value of WCO of 3.9 mg KOH/g can be decreased to 1.81 mg KOH/g in 120 minutes. The highest yield of biodiesel in transesterification process of 89.4% obtained at reaction time of 150 minutes with methanol to oil molar ratio of 6. The biodiesel produced in the experiment was analyzed by gas chromatography-mass spectrometry (GC-MS), which showed that it mainly contained five fatty acid methyl esters. In addition, the properties of biodiesel showed that all of the fuel properties met the Indonesian National Standard (INS) No. 04-7182-2006 for biodiesel. 
Esterification of Free Fatty Acid in Crude Palm Oil Off Grade Supardan, Muhammad Dani; Satriana, Satriana
Jurnal Rekayasa Kimia & Lingkungan Vol 7, No 2 (2009): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

The esterification of free fatty acids (FFA) found in crude palm oil (CPO) off grade with methanol is a promising technique to convert FFA into valuable fatty acid methyl ester (FAME, biodiesel) and obtain a FFA-free oil that can be further transesterified using alkali bases. In this work, the effects of the main variables involved in the esterification process i.e. alcohol to oil molar ratio, reaction temperature, agitation speed and the initial amount of FFA of oil, were studied in the presence of sulphuric acid as catalyst at concentration of 1%-w. The experimental results show that the esterification process could lead to a practical and cost effective FFA removal unit in front of typical oil transesterification for biodiesel production.Keywords: CPO off grade, esterification, free fatty acid