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All Journal Journal of Marine and Coastal Science Journal of Fisheries & Marine Jurnal Perikanan
Miftakhul Ulumiah
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology

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The Effect of Different pH in Extraction Process Against Physicochemical Properties of Refined Iota Carrageenan from Eucheuma spinosum Seaweed. Miftakhul Ulumiah; Mochammad Amin Alamsjah; Kustiawan Tri Pursetyo
Journal of Marine and Coastal Science Vol. 8 No. 1 (2019): FEBRUARY
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (293.099 KB) | DOI: 10.20473/jmcs.v8i1.21142

Abstract

Gelatin is a simple protein obtained from the partial hydrolysis of collagen from the skin, bones, joints and connective tissue of animals. One potential material for the manufacture of gelatin is fish bone milkfish (Chanos chanos). Gelatin derived from fish bones with acid process is able to change the triple helix collagen fibers into a single chain, whereas the solvent base only produce double chain. Demineralization of bone or fish skin should use a weak acid is acetic acid, because when using strong acids will produce a strong scent and color gelatin becomes dark. This study aims to determine the effect of the use of acetic acid to the production of fish bone gelatin and the concentration of acetic acid is necessary to produce gelatin with physical and chemical properties of the best. This study uses a Completely Randomized Design (CRD) with four treatments and five replications. The treatments used in this study is the concentration of acetic acid 2%, 4%, 6% and 8%. Based on the research, it was found that the acetic acid solvent effect on the value of the yield and gel strength, but has no effect on the pH value and viscosity. Acetic acid concentration 8% give 4.102% yield value; pH value (acidity) 4.98; 134.313 bloom gel strength and viscosity of 3.6 cP. FTIR analysis results indicate that the fish bone gelatin produced from this research have the same functional group with commercial gelatin.
Studi Kebutuhan Bahan Baku Industri Pengolahan Ikan Skala Mikro di Kabupaten Mojokerto Miftakhul Ulumiah; Mochammad Amin Alamsjah; Patmawati Patmawati
Jurnal Perikanan Unram Vol 14 No 4 (2024): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v14i4.1186

Abstract

The availability of raw materials in an industry is very important to prevent supply shortages, so that business continuity can be guaranteed. This condition can also affect the fixed costs that must be borne, especially if the production process stops.The aim of this research is to determine the amount of raw materials needed by the micro-scale fish processing industry in Mojokerto Regency. The research method used survey and interview methods with 18 respondents in the micro-scale fish processing industries in Mojokerto Regency. The research was conducted for 30 days and data analysis used quantitative descriptive. The results of the research show that the dominant fish used as raw material for fish processing is mackerel. The highest amount of raw material needed for mackerel fish occurred in 2022 at 753,864 kg and the highest amount of stock shortage reached 53,668 kg in 2020. The wader fish commodity has been fulfilled every year with the highest amount of raw material needed at 33,348 kg in 2023, while the catfish commodity has also been fulfilled. every year with the highest amount of raw material requirements in 2023 amounting to 27,421 kg.
Alginate / Polyvinyl Alcohol / Bentonite Hydrogel Beads for Cu (II) Adsorption Miftakhul Ulumiah; Mochammad Amin Alamsjah; Patmawati
Jurnal Ilmiah Perikanan dan Kelautan 2025: IN PRESS ISSUE (JUST ACCEPTED MANUSCRIPT, 2025)
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

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Abstract

Graphical Abstract Highlight Research Hydrogel bead based on alginate, PVA and bentonite were prepared by ionic gelation. Hydrogel bead were tested on Cu standard solution and waste water from paper industry.  Adding bentonite on hydrogel bead plays a key role for Cu removal. Hydrogel bead show selective removal on waste water containing Cu, Pb and Cr.   Abstract Heavy metal pollution is a major problem for most water areas. One way to remove heavy metal ions is through the adsorption process by using combination of alginate / polyvinyl alcohol hydrogel. Adding bentonite can make good adsorption and effective. The purpose of this study was to analyze the effect of hydrogels for adsorption of heavy metals Cu (II) in liquid waste from paper industrial. This study used a Completely Randomized Design (CRD) experimental method with 5 treatments and 3 replications. Types of treatments include control treatments and the addition of bentonite with a ratio of 0.5 - 1.25%. The best treatment will be applied to liquid waste. The results showed that hydrogel beads from alginate / polyvinyl alcohol / bentonite have significant differences between treatments on the adsorption of heavy metal Cu (II). The best treatment was the addition of 1% bentonite (P4) with an adsorption capacity of 74.43%. The results of the application on liquid waste showed the following adsorption capacity: Cr (65.13%) > Cu (60.84%) > Pb (44.47%). Suggestions that can be given for further research are the application of hydrogel beads to other heavy metals that have the potential to increase adsorption capacity, such as Cr.
Co-Authors Mochammad Amin Alamsjah Patmawati Patmawati Patmawati Pursetyo, Kustiawan tri