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INDONESIA
Journal of Marine and Coastal Science
Published by Universitas Airlangga
ISSN : 23016159     EISSN : 25280678     DOI : http://dx.doi.org/10.20473/jmcs.v9i2.20064
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology
The Journal of Marine and Coastal Science is a scientific journal that publishes articles related to marine science and coastal management, including seafood nutrition, marine microbiology, marine biotechnology, coastal management, and marine biodiversity research
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Perairan
Articles 126 Documents
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Antioxidant Activity of Gracilaria verrucosa Extract in Body Lotion Formulation Fransisca, Fida; Mubarak, Ahmad Shofy; Mahasri, Gunanti
Journal of Marine and Coastal Science Vol. 15 No. 1 (2026): FEBRUARY
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmcs.v15i1.84713

Abstract

Indonesia has a tropical climate with high year-round solar exposure, which increases the risk of oxidative stress and premature skin aging caused by ultraviolet radiation. Red seaweed Gracilaria verrucosa is known to contain bioactive compounds with potential antioxidant properties; however, its application as a substitute for synthetic antioxidants in cosmetic formulations remains limited. This study aimed to evaluate the antioxidant activity of G. verrucosa extract and its potential as an alternative to Butylated Hydroxytoluene (BHT) in body lotion formulations. Extraction was performed using 96% ethanol through maceration for 48 hours, resulting in an extract yield of 2.47%. The study employed an experimental method with a Completely Randomized Design consisting of five treatments, including a control without antioxidants (K0), BHT 0.1%, and G. verrucosa extract at concentrations of 3%, 5%, and 7%, with four replications. Phytochemical screening revealed the presence of alkaloids, flavonoids, saponins, phenolics, and steroids, while tannins were not detected. The IC₅₀ value of G. verrucosa extract was 63.57 ppm, indicating strong antioxidant activity. The IC₅₀ values of body lotion formulations were 1,266 ppm (K0), 137.77 ppm (BHT 0.1%), 175.95 ppm (EGV 3%), 131.82 ppm (EGV 5%), and 106.17 ppm (EGV 7%). The incorporation of G. verrucosa extract into body lotion exhibited antioxidant activity comparable to or higher than that of BHT 0.1%, indicating its potential as a safe and sustainable natural antioxidant for marine-based cosmetic formulations.
Spatial Modelling of Potential Fishing Zones For Narrow-Barred Spanish Mackerel (Scomberomorus commerson) in The Border Waters of Indonesia Timor Leste Based on Maximum Entropy Algorithm Muhammad Habibi; Cinta Putri Maharani; Zaskia Dwiki Utami; Muhammad Roman Rihardi
Journal of Marine and Coastal Science Vol. 15 No. 2 (2026): JUNE
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmcs.v15i2.86112

Abstract

The narrow-barred Spanish mackerel (Scomberomorus commerson) is an important pelagic species in the waters along the Indonesia–Timor-Leste border. Fluctuations in oceanographic conditions often make it difficult for fishermen to determine efficient fishing locations. This study aims to identify Potential Fishing Zone (PFZ) for the December 2023 period by integrating Sea Surface Temperature (SST), Chlorophyll-a, and vessel track data. The methods employed include extracting Level 3 AQUA MODIS satellite data using SeaDAS, performing Inverse Distance Weighting (IDW) spatial interpolation analysis in ArcGIS Pro, and modeling habitat suitability probability using the Maximum Entropy (MaxEnt) algorithm. The analysis results indicate that in December 2023, the oceanographic conditions of the waters had an SST range of 27.36°C–32.40°C and chlorophyll-a levels of 0.073-1.503 mg/m³. Based on the calibration of 143 actual vessel presence points, the MaxEnt model produced good predictive performance with an Area Under the Curve (AUC) value of 0.7321. The Sea Surface Temperature (SST) parameter contributed dominantly at 93.7% to habitat suitability probability, while chlorophyll-a contributed 6.3%. The mapped Potential Fishing Zone (PFZ) is concentrated in the coastal transition zone. The results demonstrate spatial agreement between model predictions and actual fishing locations, which can serve as foundational marine geospatial information for fishermen to reduce search time and improve fleet operational efficiency.
Human Health Risk from Microplastic Contamination in Indonesian Waters Viewed from Distribution, Ecotoxicological Effects and Mitigation Strategies Fika Wulandari; Neneng Hasanah; Fingky Anjelita Novriani
Journal of Marine and Coastal Science Vol. 15 No. 2 (2026): JUNE
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmcs.v15i2.88705

Abstract

The global plastic pollution crisis has reached alarming levels, with massive annual production and low effective recycling rates. Indonesia is a major contributor of plastic waste to the ocean and the country with the highest microplastics per capita in the world. This study analyzes the distribution of microplastics in Indonesian waters and their risks to human health through the food chain. This study used a literature review method with a narrative review approach on 42 reputable articles. The results show that microplastic contamination is dominated by fragments and fibers from food packaging polymers. Bioaccumulation was confirmed in all fish samples from several waters, accompanied by damage to Deoxyribonucleic Acid (DNA) and histopathology of vital organs, as well as the role of microplastics as heavy metal vectors in consumable biota. The human health risk reaches an emergency level with particle internalization in blood, brain tissue, and breast milk associated with decreased cognitive function. These findings confirm microplastics as contaminants that transfer toxins through the food chain and penetrate biological barriers. Risk-based regulations, equitable distribution of waste management infrastructure, and policies to reduce single-use plastics are needed to protect public health.
Molecular Identification of Elasmobranch Fin Products Traded Online Using DNA Barcoding Chandra Trisna Pangestu; Heru Pramono; Sapto Andriyono
Journal of Marine and Coastal Science Vol. 15 No. 2 (2026): JUNE
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmcs.v15i2.89543

Abstract

The trade in dried shark and ray fins results in the loss of diagnostic morphological characteristics, making visual species identification difficult, particularly in online transactions. This study aims to identify elasmobranch species in dried fin products marketed online using a DNA barcoding approach based on the cytochrome c oxidase subunit I (COI) gene. The study was a descriptive-exploratory analysis of two dried fin samples obtained from Facebook listings, namely BPKUAFB1 and BPKUAFB2. DNA was extracted from fin tissue, the COI gene was amplified using universal LCO/HCO primers, and PCR products were verified via electrophoresis prior to Sanger sequencing. The sequencing results were analyzed using BLASTN against the GenBank/NCBI database and validated by phylogenetic analysis using the Neighbor-Joining method with the Kimura 2-parameter model in MEGA 12. Both samples showed 100% query coverage and 99.84% identity to the GenBank reference sequence (NC_030215), indicating a very high match with Rhina ancylostomus. Phylogenetic analysis shows that both samples cluster in a single clade with the reference sequence for Rhina ancylostomus, thereby confirming the molecular identification results. The species Rhina ancylostomus is listed as Critically Endangered (CR) on the IUCN Red List and is included in CITES Appendix II, meaning its use and trade are regulated internationally. At the national level, based on the Ministry of Marine Affairs and Fisheries Decree No. 66 of 2025 (KKP, 2025), this species is not included among protected fish species and is not listed under either full or limited protection.
Synthesis of Chitosan and Ulva sp.-Based Hydrogel Beads as Bioadsorbents for Heavy Metal Removal of Pb and Cd Dyah Safrina Hardiningtyas; Faza Maulida; Bustami Ibrahim
Journal of Marine and Coastal Science Vol. 15 No. 2 (2026): JUNE
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmcs.v15i2.90198

Abstract

Water pollution remains a critical global concern, with heavy metals such as lead (Pb) and cadmium (Cd) posing serious health and environmental risks. Adsorption using biobased materials has emerged as a sustainable solution for mitigating heavy metal contamination in water. Among various bioadsorbents, chitosan and seaweed (Ulva sp.) are notable for their abundance, environmental friendliness, and effectiveness in removing toxic metals. While chitosan and Ulva have been studied individually for their adsorption properties, research on their combined use in hydrogel beads is limited, especially when their compositional ratios are systematically varied. The present study seeks to address this gap by evaluating how the incorporation and proportion of Ulva affect the structural, functional, and adsorptive properties of chitosan-based hydrogel beads, with a specific focus on the simultaneous removal of Pb and Cd from water. Hydrogel beads were synthesized with different chitosan-to-Ulva ratios (U1 [1:0], U2 [1:0.1], and U3 [1:0.5]) and characterized for swelling behavior, gel fraction, and heavy metal adsorption capacity. Results show that adding Ulva to the chitosan matrix significantly enhances the bioadsorbent’s performance, especially at the highest tested ratio (U3), which achieved an average bead diameter of 3.7 ± 0.01 mm, high swelling, and stable gel fraction. Most importantly, U3 beads demonstrated superior removal efficiencies for both Pb and Cd, highlighting the synergistic effect of combining chitosan and Ulva. These findings suggest that chitosan–Ulva hydrogel beads are promising, eco-friendly bioadsorbents for remediating heavy metal-contaminated water and could play an important role in sustainable water treatment technologies.
Optimization of Caulerpa racemosa Cultivation in Recycled Plastic Bottle Containers: Effect of Seedling Weight on Chlorophyll Content Fadiya Astiarini; Nunik Cokrowati; Eka Sunarwidhi Prasedya
Journal of Marine and Coastal Science Vol. 15 No. 2 (2026): JUNE
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmcs.v15i2.91712

Abstract

Caulerpa racemosa is an economically valuable green seaweed containing chlorophyll as its main photosyhnthetic pigment. This study aimed to analyze the effect of different seedling weights on the chlorophyll concentration of C. racemosa cultivated in recycleid plastic bottle containers. A completely randomized design was applied with three treatments and three replications, namely P1 10 g, P2 15 g, and P3 20 g per bottle, for 14 days. The observed parameters included chlorophyll-a concentration in acetone extract, antioxidant activity, specific growth rate, relative biomass increase (RBI), absolute weight gain, proximate composition, and water quality. ANOVA showed that seedling weight had no significant effect (P > 0.05) on specific growth rate, RBI, or absolute weight gain. Descriptively, the initial chlorophyll concentration was 11.51 mg/L extract and decreased to 9.01 mg/L in P1, 7.28 mg/L in P2, and 7.34 mg/L in P3, whereas the highest antioxidant activity was observed in P2 at 53.38%. P2 also showed the highest numerical specific growth rate of 3.50 ± 1.06% day-1 and the highest RBI of 64.44 ± 25.24%. These findings suggest that recycled plastic bottle containers can be considered for low cost, small-scale C. racemosa seedling cultivation; however, water circulation, light penetration, nutrient balance, and chlorophyll unit standardization should be improved in future studies.

Page 13 of 13 | Total Record : 126

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