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. Uju
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Agriculture, Biological Sciences & Forestry

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Optimasi dan Pemodelan Proses Recover Flavor Dari Limbah Cair Industri Pengolahan Rajungan Dengan Reverse Osmosis . Uju; Bustami Ibrahim; Wini Trilaksani; Tati Nurhayati
Jurnal Ilmu Pertanian Indonesia Vol. 14 No. 1 (2009): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

The waste water of blue crab pasteurization has potential in environmental pollution. It contained TSS of 206.5mg.1-1, BOD 7,092.6mg.1-1 and COD of 51,000mg.1-1. on the other hand, it also contains an interesting flavor compound, which composed of 0.23% non protein nitrogen and 17 amino acids where the highest was glutamic acid one. In this study, pre-filtration step using filter size 0.3 µ followed by reverse osmosis has been used to reduce these pollutions load and flavor compound recovery. During pre-filtration steps, TSS was reduced to 74.8% so turbidity decrased reased until 31%. After reverse osmosis process, BOD, and COD decreased more than 99%, and there was no amino acids detected in permeate stream. Factors that affect performance of reverse osmosis were transmembrane pressure, temperature and pH. The higher transmembrane pressure, temperature and pH resulted the higher the flux permeate. The use of higher temperature make flux increasing, eventually increasing transmembrane pressure make the flux increased only at transmembrane pressure less than 716 kPa. The protein rejection was influenced unsignifanctly by transmembrane pressure, temperature and pH. During concentrating flux declined exponentially by time function. At concentration factor 2.75 resulted 79% and 12% of increasing protein and NPN, respectively. The amino acids content can be increased 2−23 times of the origin. Even arginin and sistin, the amino acids that were undetectable initially, but they can bedetected at concentration of 0.0360 and 0.0250 (w/v) respectively at the end of the process. Hidrolysis and fermentation process can increase the amino acid content 31−45 times.
Characterization and Recovery of Minced fish Wastewater Protein using Reverse Osmosis . Uju; Tati Nurhayati; Bustami Ibrahim; Wini Trilaksani; Maglory Siburian
Jurnal Pengolahan Hasil Perikanan Indonesia Vol 12 No 2 (2009): Jurnal Pengolahan Hasil Perikanan Indonesia
Publisher : Department of Aquatic Product Technology IPB University in collaboration with Masyarakat Pengolahan Hasil Perikanan Indonesia (MPHPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (175.573 KB) | DOI: 10.17844/jphpi.v12i2.855

Abstract

Recovery of minced fish wastewater soluble protein was done by reverse osmosis membrane. Themincefish wastewater has high level polluting load. It contains COD and TSS 4.233 and 55,06 mg/lrespectively, but it is potential to utilized because of high protein and amino acids content especiallyglutamic acid. Fluxes of permeate during recovery process were kept on steady state in the beginningprocess at 15 l/m2h without prefiltration and 20 l/m2h with 0,9 micron prefiltration. During concentration,flux time decreased from 22,11 l/m2h at concentration factor 1 to 12,95 l/m2h at concentration factor 1,52.In other sides the rejection value of protein increased from 90,11% in the beginning process to 99,50% inthe end of the concentration process. At the end of the recovery stage, yield concentrate contained 0.401 g/lwhich is 21 fold greater than the original step. Therefore permeate stream delivered high quality effluentand met the standard of wastewater effluent.Keywords: minced fish, protein, recovery, reverse osmosis
Ulitilization of Refined Carrageenan as Cryoprotectant on Nila Frozen Surimi . Uju; Finda Maryana; Joko Santoso
Jurnal Pengolahan Hasil Perikanan Indonesia Vol 10 No 2 (2007): Buletin Teknologi Hasil Perikanan
Publisher : Department of Aquatic Product Technology IPB University in collaboration with Masyarakat Pengolahan Hasil Perikanan Indonesia (MPHPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (970.585 KB) | DOI: 10.17844/jphpi.v10i2.957

Abstract

During storage frozen, surimi will be lost part of functional protein characteristics, because of protein denaturation. For reducing this problem, some kinds of cryoprotectants were added during surimi processing. However, some cryoprotectants such as sucrose and sorbitol made taste of original surimi changing because of its sweetness. The aim of this research is to use refined carrageenan as cryoprotectant in surimi. The characteristic of refined carrageenan was used in this research include following sulfate content at 15.16, whiteness at 38.89%, viscosity at 180.5 cPS and gel strength at 490 g/cm2. During frozen storage for 8 weeks, the protein total and salt soluble decreased until 17-30% and 49-72% respectively. These decreasing caused the water holding capacity and gel strength reduced until 22-65% and 38-46 g/cm2 respectively. The using of refined carrageenan in surimi can reduce the rate of protein declining and can improve water holding capacity and gel strength. Using of refined carrageenan at 2% is the best concentration in this research.Key words: cryoprotectant, refined carrageenan, gel strength
Pengaruh Penyimpanan Beku Surimi terhadap Mutu Bakso Ikan Jangilus (Istiophorus sp.) . Uju
Jurnal Pengolahan Hasil Perikanan Indonesia Vol 9 No 2 (2006): Buletin Teknologi Hasil Perikanan
Publisher : Department of Aquatic Product Technology IPB University in collaboration with Masyarakat Pengolahan Hasil Perikanan Indonesia (MPHPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (45.523 KB) | DOI: 10.17844/jphpi.v9i2.986

Abstract

Salah satu metode pengawetan yang paling baik dan aman untuk mempertahankan kesegaran produk adalah penyimpanan beku. Melalui penyimpanan beku ketersediaan dan kesinambungan industri pengolahan hasil perikanan akan tetap dijaga. Penyimpanan bahan baku bakso dalam bentuk surimi diharapkan akan lebih ekonomis dibandingkan dengan penyimpanan ikan dalam bentuk utuh yang dibekukan. Tujuan penelitian ini adalah mengetahui karakteristik mutu bakso ikan yang dipengaruhi waktu penyimpanan pada suhu beku. Penyimpanan surimi yang dilakukan pada suhu –15 oC selama 4 minggu dapat menyebabkan penurunan mutu bakso ikan. Selama penyimpanan kekuatan gel menurun dari 559,84 g.cm sampai 276,40 g.cm, begitu juga hasil uji pelipatannya menurun dari skala 5 menjadi 2 pada minggu keempat. Nilai derajat kecerahan menurun dari 86,31 % menjadi 85,74 %. Penurunan derajat kecerahan ini tenyata dapat dirasakan oleh panelis. Hal ini dapat terlihat dari semakin menurunnya tingkat kesukaan terhadap warna bakso ikan yang dihasilkannya. Rasa bakso ikan yang dihasilkan dari surimi yang telah disimpan selama 1, 2, 3, dan 4 minggu mengalami perubahan. Penurunan perubahan rasa, berbeda nyata setelah penyimpanan pada minggu ketiga.Kata kunci: bakso, ikan jangilus, penyimpanan beku, surimi
Co-Authors Bustami Ibrahim Dede Maryana Joko Santoso Maglory Siburian TATI NURHAYATI Wini - Trilaksani