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KAJIAN PENAMBAHAN RAGI ROTI DAN PERBANDINGAN VOLUME STARTER DENGAN SUBSTRAT TERHADAP RENDEMEN DAN MUTU VIRGIN COCONUT OIL (VCO) Meilina, Hesti; Asmawati, Asmawati; Moulana, Ryan
Jurnal Sains dan Teknologi Reaksi Vol 8, No 1 (2010): Jurnal Sains dan Teknologi Reaksi
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v8i1.127

Abstract

Penelitian untuk melihat pengaruh jumlah ragi roti dan perbandingan starter terhadap jumlah dan rendemen mutu virgin coconut oil (VCO) telah dilakukan. Pembuatan starter dilakukan dengan menambahkan ragi roti seberat 3, 5 dan 7 gram ke dalam campuran skim dan air kelapa. Starter dimasukkan ke dalam santan sebagai substrat dengan perbandingan 1:2, 1:4 dan 1:6. Hasil penelitian menunjukkan jumlah ragi roti berpengaruh terhadap bilangan peroksida, bilangan iod, bilangan asam, % free fatty acid (FFA) dan uji organoleptik aroma VCO yang dihasilkan; sedangkan perbandingan substrat tidak berpengaruh terhadap semua analisis VCO yang dilakukan. Interaksi jumlah ragi roti dan perbandingan starter dengan substrat berpengaruh terhadap bilangan asam dan % FFA namun tidak berpengaruh terhadap rendemen, kadar air, bilangan peroksida serta uji organoleptik aroma dan penampakan VCO.Kata Kunci: virgin coconut oil, ragi roti, mutu VCO
Effect of moisture content and amount of Hexane on in-situ transesterification of jatropha seeds for biodiesel production Ryan Moulana; . Satriana; M. Dani Supardan; Wirda Aina
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 3, No 2 (2013): Engineering
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (121.397 KB)

Abstract

The aim of this research is to study in-situ transesterification technique of jatropha seeds for biodiesel production. This research was conducted using a randomized factorial block design consisting of two factors that is moisture content of jatropha seeds (2% and 3%) and amount of hexane that used as a co-solvent (0 ml, 75 ml, 95 ml, 115 ml and 135 ml). The experimental result shows that the highest yieldbiodiesel of 78.72 % obtained at process condition of jatropha seeds moisture content of 2% and amount of hexane of 115 mL. The physico-chemical analysis of biodiesel procured the acid number of 0.35 mg KOH/g, density of 0.89 g/mL and viscosity of 3.04 mm2/ s that meet requirement of Indonesian Nasional StandardNo. 04-7182-2006.
Influence of co-solvent on reactive-extraction of Jatropha curcas L. seed for biodiesel production M. Dani Supardan; . Satriana; Ryan Moulana
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 2, No 2 (2012): Engineering
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (309.433 KB)

Abstract

In this study, experimental studies have been carried out to improve the yield of biodiesel by addition of co-solvent to enhance the miscibility of the phases and speed up the reaction rate. The co-solvent used are tetrahydrofuran and hexane. The experimental result shows that the transesterification rate was improved when compared to the system without cosolvents. 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.
Effect of moisture content and amount of Hexane on in-situ transesterification of jatropha seeds for biodiesel production Ryan Moulana; . Satriana; M. Dani Supardan; Wirda Aina
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 3, No 2 (2013): Engineering
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (121.397 KB)

Abstract

The aim of this research is to study in-situ transesterification technique of jatropha seeds for biodiesel production. This research was conducted using a randomized factorial block design consisting of two factors that is moisture content of jatropha seeds (2% and 3%) and amount of hexane that used as a co-solvent (0 ml, 75 ml, 95 ml, 115 ml and 135 ml). The experimental result shows that the highest yieldbiodiesel of 78.72 % obtained at process condition of jatropha seeds moisture content of 2% and amount of hexane of 115 mL. The physico-chemical analysis of biodiesel procured the acid number of 0.35 mg KOH/g, density of 0.89 g/mL and viscosity of 3.04 mm2/ s that meet requirement of Indonesian Nasional StandardNo. 04-7182-2006.
Utilization of hemp (Cannabis sativa L.) as an alternative raw material for the production of three-layered particleboard Ryan Moulana
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 2, No 1 (2012): Life Sciences
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (145.94 KB)

Abstract

As the availability of high quality trees decreased and the price increased the wood base panel industry is looking to replace the common used wood by agricultural residues or fast growing trees and plants as well as agricultural plants like hemp (Cannabis sativa L.). Hemp offers characteristics that are similar to wood properties. In line with this research, three-layered particleboards under utilization of hemp material were developed. The hemp was used in combination with industrial produced particles to find out which amount of wood can be substituted by hemp and further to investigate which decreased densities can be realized by the use of hemp. Hemp can be used for the production of lightweight particleboards due to its lower bulk density compared to wood. All developed hemp/wood based particleboards were produced under industrial parameters in laboratory and pilot scale using conventional urea formaldehyde-resin, hardeners, and hydrophobic substances. The mechanical technological properties of all produced innovative particleboards and reference particleboards were determined according to current DIN/EN standards. In detail density profile, bending strength, internal bond strength, surface strength, and thickness swelling were determined. Compared to the produced reference particleboards, consisting only of wood particles, the developed hemp/wood particleboards possessed better mechanical-technological properties. Furthermore it was realized to produce particleboards with densities of 550 kg/m³ by using hemp due to its low bulk density which fulfills the given DIN/EN requirements. As an overall result we found out that hemp is a real alternative to nowadays used wood for the production of particleboards in general and for the production of lightweight particleboards in particular.  
Biopolymer From Starch And Chitosan As Bioplastic Material For Food Packaging Umi Fathanah; Mirna Rahman Lubis; Ryan Moulana
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (93.894 KB)

Abstract

This research aims to improve economic value of cassava peel waste as raw material of bioplastic making, whose existence is still very abundant and has not been benefitted optimally. Bioplastic making is conducted by mixing starch and chitosan with gliserol as plasticizer. Bioplastic making is carried out at gelatinization temperature of 80oC. Chitosan addition is carried out at variatios of 0; 10; 20; 30; and 40 (% w). Research result indicates that mechanical property i.e. optimum value of tensile strength is obtained at value of 38.25 MPa with chitosan addition as much of 30%. The highest elongation percentage is obtained as much of 41.25% with addition of 10% chitosan. Physical property of resulted bioplastic is obtained from the best swelling test at addition of 40% chitosan i.e. 0.38%, and bioplastic density obtained is ranged from 2 – 3.33 g/ml. Analysis of functional group by using FTIR exhibits the existence of ester and carbonyl groups that indicates that resulted bioplastic could be degraded. Whereas biodegradability test on environment exhibits that bioplastic could be completely degraded in soil for 24 days.
Karakteristik Kimia dan Mikrobiologis Asam Drien (Durian Fermentasi dari Aceh) pada Berbagai Metode Pembuatan Murna Muzaifa; Ryan Moulana; Yuliani Aisyah; Ismail Sulaiman; Trisma Rezeki
agriTECH Vol 35, No 3 (2015)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (605.777 KB) | DOI: 10.22146/agritech.9339

Abstract

Research has been conducted to examine the chemical and microbiological characteristics of asam drien (tempoyak from Aceh) made by following various methods in Aceh. This study used completely randomized design consisting of 4 treatments: fermented durian without the addition of other ingredients/normal (A), fermented durian using turmeric (B), fermented durian using salt (C), fermented durian using salt and turmeric (D). The parameters analyzed included chemical properties (water content, pH, total lactic acid, and total sugars) and microbiological analysis (total lactic acid bacteria and yeasts). The results showed that the method of asam drien production had very significant effect on the water content, the total pH, total lactic acid, total sugar sand total lactic acid bacteria, but did not significantly affect the total yeast. There is a tendency that the number of treatment without the addition of salt produced water content, total lactic acid and total lactic acid bacteria higher. Average chemical and microbiological characteristics asam drien are as follows: 66.49% moisture content, pH4.1, totalacid2.30%, 30.50% total dissolved solids, total lactic acid bacteria 99×10 10  CFU/g and a total of 18×10 6 yeast CFU/g.ABSTRAKTelah dilakukan penelitian untuk mengkaji karakteristik kimia dan mikrobiologis asam drien(tempoyak asal Aceh) dengan mengikuti beberapa metode pembuatan asam drien yang ada di Aceh. Penelitian ini menggunakan RAL nonfaktorial yang terdiri atas 4 perlakuan, yaitu: fermentasi durian biasa tanpa penambahan bahan lain (A), fermentasi durian menggunakan kunyit (B), fermentasi durian menggunakan garam (C), fermentasi durian menggunakan garam dan kunyit (D). Parameter yang dianalisis meliputi sifat kimia (kadar air, pH, total asam laktat, total gula) dan analisis mikrobiologis (total bakteri asam laktat dan khamir). Hasil penelitian menunjukkan bahwa metode pembuatan asam drien berpengaruh sangat nyata terhadap kadar air, total pH, total asam laktat, total gula dan total bakteri asam laktat, namun berpengaruh tidak nyata terhadap total khamir. Terdapat kecenderungan bahwa pada perlakuan tanpa penambahan garam dihasilkan kadar air, total asam laktat dan total bakteri asam laktat lebih tinggi. Rata-rata karakteristik kimia dan mikrobiologis asam drien adalah sebagai berikut: kadar air 66.49%, pH 4.1, total asam 2.30%, total padatan terlarut 30.50%, total bakteri asam laktat 99×1010 CFU/g dan total khamir 18×10 6CFU/g.
Transesterifikasi In Situ Biji Jarak Pagar Menggunakan Kavitasi Hidrodinamik Muhammad Dani Supardan; Satriana Satriana; Ryan Moulana
agriTECH Vol 34, No 1 (2014)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (359.723 KB) | DOI: 10.22146/agritech.9521

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.
Karakteristik Pengeringan Biji Kopi dengan Pengering Tipe Bak dengan Sumber Panas Tungku Sekam Kopi dan Kolektor Surya Raida - Agustina; Hendri - Syah; Ryan - Moulana
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol 1 No 1 (2016)
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Salah satu tahapan pascapanen yang sangat kritis adalah pengeringan biji kopi, karena dapatmempengaruhi mutu biji kopi. Tujuan penelitian ini adalah mengkaji proses pengeringan biji kopi denganmenggunakan alat pengering tipe bak dengan sumber panas dari tungku sekam kopi dan kolektor surya.Parameter yang dikaji adalah distribusi temperatur, kelembapan relatif, iradiasi surya, penurunan kadar airdan laju pengeringan. Temperatur di dalam ruang pengering lebih tinggi dari pada temperatur lingkungan,sedangkan kelembapan relatif di dalam pengering lebih rendah dibandingkan dengan di lingkungan. Halini menyebabkan proses pengeringan berlangsung cepat. Nilai iradiasi surya yang didapat berfluktuasi.Iradiasi tertinggi mencapai 742.86W/m2. Kadar air awal biji kopi yaitu 48,7%. Kadar air akhirpengeringan biji kopi ulangan 1 yaitu 11,66% dan pengeringan biji kopi ulangan 2 yaitu 11,40% sudahdibawah kadar air maksimal biji kopi kering menurut SNI yaitu 12.5%.
Pengaruh Rasio Biji terhadap Pelarut dan Waktu Ekstraksi terhadap Yield dan Kualitas Minyak Biji Alpukat Novia Mehra Erfiza; Ryan Moulana; Desy Wulandari; Satriana Satriana; Muhammad Dani Supardan
Jurnal Rekayasa Kimia & Lingkungan Vol 11, No 1 (2016): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (304.987 KB) | DOI: 10.23955/rkl.v11i1.3771

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh rasio biji alpukat terhadap pelarut dan waktu ekstraksi pada proses ekstraksi minyak biji alpukat menggunakan pelarut n-heksan. Penelitian menggunakan rancangan acak kelompok dengan pola faktorial terdiri atas 2 faktor yang masing-masing terdiri dari 3 taraf dengan 3 kali ulangan. Faktor pertama adalah rasio biji alpukat terhadap pelarut yaitu 1:5, 1:10 dan 1:15 (g/mL), sedangkan faktor kedua adalah waktu ekstraksi yaitu 120, 150, dan 180 menit. Hasil sidik ragam menunjukkan bahwa perlakuan rasio bahan terhadap pelarut tidak berpengaruh nyata (P0,05) terhadap yield dan bilangan asam. Sementara itu, perlakuan waktu ekstraksi berpengaruh nyata (P≤0,05) terhadap yield minyak biji alpukat, dan berpengaruh tidak nyata (P0,05) terhadap bilangan asam. Yield tertinggi (2,23%) diperoleh dari sampel minyak pada perlakuan rasio bubuk biji alpukat terhadap pelarut 1:5 dan waktu ekstraksi 120 menit dengan aktivitas antioksidan 62,87%, serta nilai viskositas dan densitas masing-masing yaitu 13,5 cP dan 0,96 g/mL. Asam lemak oleat merupakan komponen terbesar dalam minyak biji alpukat.