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All Journal Jurnal Pengolahan Hasil Perikanan Indonesia Albacore : Jurnal Penelitian Perikanan Laut COJ (Coastal and Ocean Journal)
Uju
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Agriculture, Biological Sciences & Forestry Humanities Environmental Science Social Sciences

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Optimasi Penggunaan Karagenan dan Kalsium Sulfat pada Pembuatan Tahu Sutra dalam Penembangan Pangan Fungsional: Optimization the Use of Carrageenan and Calcium Sulfate in Silken Tofu Production in Functional Food Development Nurheni Sri Palupi; Nindya Atika Indrastuti; Uju; Elvira Syamsir
Jurnal Pengolahan Hasil Perikanan Indonesia Vol 23 No 2 (2020): Jurnal Pengolahan Hasil Perikanan Indonesia 23(2)
Publisher : Masyarakat Pengolahan Hasil Perikanan Indonesia (MPHPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17844/jphpi.v23i2.30973

Abstract

Wedang tahu merupakan olahan tradisional kombinasi antara tahu sutra yang disiram dengan kuah jahe. Kedelai dan jahe yang menjadi bahan baku utama dalam pembuatan wedang tahu memiliki sifat fungsional bagi tubuh bila dikonsumsi. Hal ini menjadikan wedang tahu berpotensi untuk dikembangkan sebagai pangan fungsional. Mutu tekstur tahu sutra menjadi salah satu faktor penentu kualitas wedang tahu. Penambahan karagenan pada pembuatan tahu sutra diharapkan dapat meningkatkan mutu tekstur tahu sutra yang dihasilkan. Tujuan penelitian adalah menentukan kombinasi konsentrasi kalsium sulfat dan karagenan sehingga diperoleh nilai respon rendemen dan tekstur yang optimal menggunakan program Design Expert 7.0. Penentuan formula optimal didasarkan pada hasil pengamatan secara visual (subjektif) yang dikorelasikan dengan hasil pengukuran tekstur secara objektif menggunakan TA-XT2i Texture Analyzer. Formula optimal kemudian dilanjutkan dengan uji sensori, uji proksimat, perhitungan angka kecukupan gizi (AKG), uji tekstur dan uji sineresis. Formula optimal yang direkomendasikan adalah kombinasi kalsium sulfat sebanyak 0,45% dan karagenan 0,10% dengan nilai desirability sebesar 0,75. Formula optimal tersebut memiliki nilai rendemen sebesar 85,36%, kekerasan sebesar 173,60 gf, daya kohesif sebesar 0,07; elastisitas sebesar 0,54; dan daya kunyah sebesar 6,58 gf.
Pengaruh Jenis Pelarut dan Ultrasonikasi terhadap Ekstrak Fikoeritrin dari Kappaphycus alvarezii : The Effect of Different Solvent Type on Phycoerithryn Extract from Kappaphycus alvarezii Anne Mumtaza Putri; Uju; Safrina Dyah Hardiningtyas
Jurnal Pengolahan Hasil Perikanan Indonesia Vol 24 No 2 (2021): Jurnal Pengolahan Hasil Perikanan Indonesia 24(2)
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 | DOI: 10.17844/jphpi.v24i2.37182

Abstract

Kappaphycus alvarezii is a type of red seaweed (Rhodophyta) which contains phycobiliprotein pigments. Red seaweed is dominated by phycoerythrin type phycobiliprotein. Phycoerythrin can be obtained from the extraction process. The purpose of this study was to determine the effect of solvent type and acceleration time of ultrasonication extraction on phycoerythrin pigments. The extraction process was carried out in stages using distilled water, CaCl2 and phosphate buffer with ultrasonication acceleration of 35-55 minutes. The results showed that the phycoerythrin pigment extract of K. alvarezii using distilled water produced a more concentrated pigment color than buffer phosphate and CaCl2, showing the highest concentration of 0.057 mg/mL, and a purity index of 0.189. Water solvent is safe to use because water does not have toxic power. So, there is no need to conduct a preliminary test for solvent toxicity. It is more economical than other types of solvents. The extraction of phycoerythrin pigment using distilled water for 45 minutes resulted in a more concentrated pigment color. The concentration of phycoerythrin pigment before and after precipitation was 0.170 mg/mL and 0.421 mg/mL, respectively. The phycoerythrin pigment purity index before and after precipitation was 0.301 and 0.831, respectively. The best antioxidant activity (% inhibition) was found at concentrations of 50 ppm and 80 ppm phycoerythrin pigment with extraction time of 45 minutes at 62% and 89% respectively. Protein profile using SDS-Page showed that phycoerythrin has a molecular weight of 16.27 kDa in the subunit, 17.79 kDa in the subunit β, and 30.60 kDa in the subunit γ.
Performance Enhancement of Microbial Fuel Cells from Fishery Wastewater Using Boost Converter Device Ibrahim, Bustami; Uju; Subrata, I Dewa Made; Ramadhan, Rahmat Agung
Coastal and Ocean Journal (COJ) Vol 8 No 2 (2024): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v8i2.55742

Abstract

Electricity is a basic necessity in everyday life. Fossil energy is typically used to generate electricity, and non-renewable energy sources will eventually be depleted without innovation in the form of renewable energy. Liquid waste from fisheries is a commodity that can generate electricity through Microbial Fuel Cell (MFC) systems. However, the electricity generated is relatively small. The research aimed to increase the electrical voltage from fish curing waste in a Microbial Fuel Cell system by using an additional boost converter circuit. The research was conducted using 5 MFC systems connected in series and connected to a boost converter device. The electrical values of the MFC system with the boost converter circuit were a voltage of 12.13±0.87 V, a current of 0.86±0.20 mA, and a power of 10.50±3.11 mW. Meanwhile, without the boost converter circuit, the voltage value was 2.24±0.26 volts, the current was 0.17±0.03 mA, and the power was 0.38±0.11 mW. The increase in electricity in the MFC system indicated that the boost converter circuit functioned properly. The MFC system was able to reduce BOD, COD, and TAN values.
FISHERMEN’S PERCEPTION ON PORTABLE COOLING MACHINES WITH SOLAR PANELS AT BATU BERIGA, CENTRAL BANGKA REGENCY Imron, Mohammad; Wisudo, Sugeng Hari; Baskoro, Mulyono S.; Uju; Triadhi, Joko; Soehadi, Imam; Kurnia, Triono Aries; Arzali; Anggraini, Atika; Kusumastuti, Ratih; Wardani, Puti; Prasetiyo, Shidiq Lanang
Jurnal Penelitian Perikanan Laut (Albacore) Vol 9 No 3 (2025): Albacore
Publisher : Departemen PSP IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/core.9.3.483-496

Abstract

This study aims to analyze the perceptions of Batu Beriga fishermen regarding the use of portable cooling machines powered by solar panels as an alternative to ice in handling fish catches. The technology is considered promising as it reduces dependence on ice blocks, lowers operational costs, and helps maintain fish freshness for longer periods. A descriptive quantitative approach was employed, using a structured questionnaire administered to 40 active fishermen with at least five years of fishing experience. Perceptions were assessed through 10 indicators covering functionality, economic benefits, ease of use, compatibility, technical complexity, and impact on catch quality. The results reveal that most fishermen expressed positive perceptions, with the highest agreement on the machine’s function as an ice substitute (95%) and its adaptability to vessel conditions (90%). However, concerns remain regarding the initial investment cost and fabrication complexity, as only 50% of respondents agreed with this aspect. Overall, the findings highlight a strong relative advantage and compatibility, while technical complexity persists as a major challenge. The study underscores the need for policy support in the form of technology subsidies, soft loans, and technical training programs to facilitate wider adoption. Such interventions are expected to accelerate the integration of renewable energy technologies into small-scale fisheries, reduce fishermen’s operational costs, and strengthen post-harvest handling systems. Furthermore, the adoption of solar-powered cooling technology aligns with the Sustainable Development Goals (SDGs), particularly Goal 7 (Affordable and Clean Energy) and Goal 14 (marine ecosystem). Key words: Bangka Tengah, fishermen, perception, portable cooling machine, solar panel
Co-Authors Anggraini, Atika Anne Mumtaza Putri Arzali Bustami Ibrahim Elvira Syamsir I Dewa Made Subrata Kurnia, Triono Aries Mohammad Imron Mulyono S. Baskoro Nindya Atika Indrastuti Palupi, Nurheni Sri Prasetiyo, Shidiq Lanang Ramadhan, Rahmat Agung Ratih Kusumastuti safrina dyah hardiningtyas Soehadi, Imam Triadhi, Joko Wardani, Puti