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FORMULASI MIKROENKAPSUL OLEORESIN KAYUMANIS (Cinnamon burmanni) DAN CENGKEH (Caryophillus aromaticus Linn) Arifan, Fahmi; Wikanta, Deddy Kurniawan
METANA Vol 8, No 01 (2012): Juli 2012
Publisher : Universitas Diponegoro

Product development spices such as cinnamon and cloves in the form of oleoresin microcapsules cinnamon and cloves that can be used as a natural preservative because of its potential as an antioxidant and antimicrobial as well as a flavoring agent (agent taste) in food products. In this research, formulation of microcapsules to obtain microcapsules pleoresin cloves and cinnamon. Optimal extraction results obtained at 50 Â° C, pressure of 350 bar, the efficiency of clove and cinnamon bark amounted to 17.24% and 1.16% of khromatography Cinnamaldehye analysis of cinnamon was 96.7%, moderate levels of eugenol clove 72, 08%. Terstabil emulsion composition with a ratio of lecithin; gum arabic; malto dextrin and CMC (10; 90, 10, 10), emulsion terstabil microcapsules made â€‹â€‹with two formulas, formula A with clove oleoresin composition is more dominant, and the composition of formula B with composition oleoresin microcapsules cinnamon bark is more dominant, the results for the microencapsulation formula A 8 (1:4) was 85.98% and B8 formula (4:1) 89.13%. Key word : oleoresin clove, cinnamon-microencapsulated

PENGEMBANGAN PROSES THERMOKIMIA UNTUK PENINGKATAN KONVERSI ASAM LEMAK MELALUI INTERFACIAL ACTIVATION LIPASE BUAH SEGAR KELAPA SAWIT DENGAN TUNING UP MENGGUNAKAN GELOMBANG MIKRO Wikanta, Deddy Kurniawan; Y, Mohamad Endy; Erlangga, Erlangga; A, Hermawan Dwi
METANA Vol 8, No 01 (2012): Juli 2012
Publisher : Universitas Diponegoro

Nowadays, Indonesia fulfill the demand of fatty acid by importing it, through Indonesia is one of major producer of Crude Palm Oil (CPO), one of vegetable oil beside Palm Kernel Oil (PKO) and Coconut Oil (CNO) that can be used as the raw material for the production of fatty acid. In order to increase the added value of palm oil and to fulfill the country demand of fatty acid, it is necessary, finding a new fatty acid production process which is more efficient and more economial. Because palm oil has a lipase enzyme that can hydrolyze the triglyceride of palm oil, it is urge to study the technology of fatty acid production by utilize the lipase of palm oil. The thermal protonation of microwave toward the fatty acid chain in enzyme is the important matter, because enzyme will memorize the ionization condition from aquatic solution before the dehydration process (enzymeâ€™s pH memory). Because of that, â€œthe tuningâ€ towards pH will fasten the hydrolysis rate. The parameters of the research were reaction temperature, pH, power, ratio of water-fruit, mechanical treatment and the milling of the palm oil as time function. Keywords : fatty acid, lipase enzyme, interfacial antivation, microwave

PEMODELAN TERMODINAMIKA STEAM REFORMER UNTUK PRODUKSI GAS H2 MENGGUNAKAN GAS ALTERNATIF HASIL PEMBAKARAN COKES Wikanta, Deddy Kurniawan
METANA Vol 6, No 02 (2009): Desember 2009
Publisher : Universitas Diponegoro

Abstract Most of H2 gas industry produce its product from natural gas by reforming. Availability of natural gas stay no longer. One of alternative substitute gas is flue gas from cokes. The problem is how to model thermodynamically the reformer so that it operates as same in order compare with using natural gas. For this reason it needs to be simulated thermodynamic model to know the process tendency to succeed. This research is done in 2 step, namely : thermodynamic modelling and simulation. The result give recommendation that flue gas from cokes can be used as gas substitute to feed reformer. Keywords : reformer; thermodynamic

REKAYASA BIOKONVERSI LIMBAH CAIR INDUSTRI PANGAN MENJADI PLASTIK BIODEGRADABLE DENGAN MENGGUNAKAN LUMPUR AKTIF Wikanta, Deddy Kurniawan; Yulianto, Mohamad Endy; Arifan, Fahmi
METANA Vol 5, No 2 (2007): Desember 2007
Publisher : Universitas Diponegoro

Abstract Plastics waste has a negative effect on our environment. one effort to solve a Â problem exerted in plastic waste is by making a degradable plastic material. Polihidroksialkanoat (PHA) is one of biodegradable plastic material which is include in the polyester group. PHA can be completely degraded and hasÂ similar properties. with conventional plastic. The usage of liquid food industry waste is a good alternative for the production of PHA, since liquid waste of food industry comprise of organics substance such as C, H, O, N and Â S. The production of Polihidroksialkanoat (PHA) from liquid waste of flour industry, wasconducted in a of sequencing batch reactor (SBR).The objectivesÂ of this research are to study the effect of batch time in one cycle of sequencing batch reactor(SBR), to compare between short and ordinary cycle in SBR system to PHA accumulation and kind of PHA, to study optimum condition of producing PHA. The first experimen was done In time of less than 12 hours by using filling timeÂ variable and ratio of duration of Aerob and anaerob process. The constand conditions were ambient temperature and neutral pH (at the begining). The results shows that at running with time ratio of aerob:anaerob was 6:3 hours and aÂ same duration ofÂ feeding, the highest average PHA content was got at the run when filling step is in six hours anaerob with aerob breaking time. The feeding durationÂ also influence the PHA formation. the short feeding duration yielded the highest average PHA content. An average PHA 0.1838 g/gsel was yielded at two hours feeding duration Â Key Words :biodegradable:plastic:waste Â Â

PENGEMBANGAN PRODUKSI BIOPLASTIK UNTUK KERAJIANAN ASESORIS DARI GLISEROL SEBAGAI PEMANFAATAN LIMBAH INDUSTRI BIODISEL Ratnani, Rita Dwi; Budihardjo, Arief; Wikanta, Deddy Kurniawan
Laporan Penelitian dan Pengabdian Masyarakat LAPORAN PENELITIAN
Publisher : Laporan Penelitian dan Pengabdian Masyarakat

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Plastics is one of chemical invention that make our life easier. The broaden usage of plastics is caused by plastic‘s preeminence. However, the preeminence of platics has made it as the biggest source of pollutant. Plastics create so much pollution and landfill crisis that various attempts have been made to solve these problems. One of these attempts is to create a biodegradable plastic from glycerol in Sequencing Batch Bioreactor. This research objectives are to develop the sequenching batch bioreactor for PHA production from glycerol and to optimize the process condition toward the PHA productivity. Research on the production of polyhydroxyalkanoates through the glycerol fermentation in a sequencing batch bioreactor is investigated both experimentally and modelling. The research sequences are conducted in several steps: design and fabrication of sequencing batch bioreactor, polyhydroxyalkanoates productivity test and optimization of the process parameters. The productivity test showed that the addition of methanol in the pretreatment process of PHA recovery has enhance the yield of the PHA extracted from the biomass. The highest PHA recovery was achieved from pretreament duration of 2 hours submerging in methanol solution. The optimization process showed that the most influencing variables was the nitrogen concentration and the highest PHA recovery was achieved from process conducted with nitrogen concentration of 4 mg/L, Phosporous concentration of 2 mg/L, oxygen concentration of 5 mg/L and the aerobic-anaerobic ratio of 1:4

PENGEMBANGAN PRODUKSI BIOPLASTIK UNTUK KERAJIANAN ASESORIS DARI GLISEROL SEBAGAI PEMANFAATAN LIMBAH INDUSTRI BIODISEL Ratnani, Rita Dwi; Budihardjo, Arief; Wikanta, Deddy Kurniawan
Laporan Penelitian dan Pengabdian Masyarakat LAPORAN PENELITIAN
Publisher : Laporan Penelitian dan Pengabdian Masyarakat

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Salah satu upaya yang dilakukan untuk mengatasi masalah yang ditimbulkan oleh sampah plastik adalah dengan membuat material plastik yang dapat didegradasi, antara lain dengan memanfaatkan limbah cair industri biodisel yang memiliki kandungan zat-zat organik (C, H, O, N, S). Adanya zat-zat ini dapat dimanfaatkan dengan pengolahan secara fermentasi menggunakan mikroorganisme lumpur aktif menjadi plastik yang terdegradasi. Jenis plastik yang terbentuk dalam proses ini adalah Polihidroksialkanoat (PHA). PHA dapat terdegradasi sempurna dan memiliki sifat yang mirip dengan kelebihan yang dimiliki oleh plastik konvensional. Tujuan penelitian adalah mengembangkan produksi bioplastik (PHA) melalui proses fermentasi gliserol dengan menggunakan mikroba dari lumpur aktif pabrik tekstil dalam sequenching batch bioreactor.Target yang ingin dicapai berupa data-data teknis laboratorium untuk perancangan, scale-up dan pengoperasian proses yang meliputi kinetika reaksi fermentasi, kondisi operasi yang optimum dan analisa tekno-ekonomi. Pada tahun pertama dilakukan perancangan dan pabrikasi sequenching batch bioreactor dilanjutkan studi kinetika reaksi fermentasi dan pemodelan menggunakan komputasi proses. Penyusunan model dilakukan berdasarkan teori kinetika Monod dan Michaelis–Menten. Model yang dipostulasi, kemudian diturunkan untuk memperoleh persamaan yang nantinya akan diuji dan divalidasi dengan menggunakan data yang diperoleh dari eksperimental.Hasil penelian menunjukkan bahwa pelarut yang baik untuk proses perlakuan ekstraksi PHA adalah metanol, yaitu sebesar 0.3g/L. Hasil yang diperoleh relatif baik pada perendaman 2 jam dengan perolehan PHA sebesar 0,44g/L. Model matematika ditentukan dengan metode algoritma genetika yang disusun dalam bentuk persamaan diferensial simultan dan diselesaikan dengan metode Runge Kutta menggunakan bahasa pemrograman MATLAB. Persamaan differensial diperoleh dari penurunan neraca massa dan substitusi persamaan kecepatan regenerasi/pertumbuhan sel (rg), kecepatan penurunan/kematian sel (rd) dan kecepatan konsumsi substrat untuk menjaga aktifitas sel (rsm). Konsentrasi PHA yang dihasilkan dapat menjadi penghambat pertumbuhan sel dan menurunkan kecepatan reaksi bahkan sampai menghentikan reaksi (Cp*) dikenal sebagai pengaruh product-inhibition. Kecepatan regenerasi meningkat seiring dengan waktu dan mulai menurun setelah 9 jam.

Kemampuan Asap Cair pada Pengawetan Ikan Bandeng Disertai Perendaman Prapengasapan dalam Larutan Mikrokapsul Oleoresin Daun Sirih Arifan, Fahmi; Wikanta, Deddy Kurniawan; Susanti, Margaretha Tuti
INTEK: Jurnal Penelitian Vol 4 No 2 (2017): Oktober 2017
Publisher : Politeknik Negeri Ujung Pandang

On this research have observed liquid smokeâ€™s ability to pursue microbe activity, antimicrobe and antioxidant compounds in betel oleoresin, give preservation effect by pursue microorganismâ€™s growth on Chanos-chanos forsk. Fish Submerge process by liquid smoke with betel oleoresin submerge on pre-smoking, give optimum result value of TVB 8,62 mg N/100gr, reach on submerge by betel oleoresin 6% concentration, during 15 minutes, and submerge with liquid smoke 4% concentration during 10 minutes. Value of total microbe 6,06 x 10 3 CFU. Result above has contribution with censor examination of rather hard texture and much liked flavor.

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