Journal of Marine Resources and Coastal Management

Antibacterial activities of the extracts of sponge Agelas cervicornis agains bacteria Staphylococcus aureus

Ardelia Humaimah Denatri — 2023-08-29

Infection is a health problem that can cause death in the world. An antibiotics is a treatment used to treat infectious diseases. If antibiotics are used continuously, they can cause resistance. One of the bacteria that causes skin infections and has been reported to be resistant to several antibacterials is Staphylococcus aureus. So we need an alternative to exploring antibacterial compounds derived from the ocean. Sponge extract from the genus Agelas has been reported to contain secondary metabolites that are antibacterial. This research aims to determine the antibacterial potential of sponge extract and the secondary metabolite of sponge extract, Agelas cervicornis. The extraction process uses maceration with methanol as a solvent. The tests carried out in this study included a phytochemical screening test and an antibacterial activity test carried out using the disc diffusion method to determine the inhibition zone produced against the pathogenic bacteria Staphylococcus aureus. The results of phytochemical screening showed that the sponge extract of Agelas cervicornis contained flavonoids, alkaloids, and terpenoids. The results of the antibacterial activity test of the sponge extract of Agelas cervicornis showed that all concentrations of 0.5 mg/ml, 1 mg/ml, and 1.5 mg/ml had weak inhibitory properties.

Analysis of the level of community resilience to tidal flood disaster in Karangagung Village, Palang District, Tuban Regency, East Java

Lailatul Nikmah — 2023-08-29

Tidal floods are inundations of water on the coastal plain due to high tide. Tidal floods are caused by tidal phenomena and excessive sea water intrusion due to rain. The level of resilience of coastal communities needs to be studied in order to minimize the impact and obtain recommendations for increasing the resilience of coastal communities to the threat of disasters. The aim of this research is to determine the level of community resilience to tidal floods in Karangagung Village, Palang District, Tuban Regency, East Java. The level of community resilience to tidal floods was analyzed using the Coastal Community Resilience (CCR) method. The results of the level of community resilience in facing tidal floods in Karangagung Village, Palang District, Tuban Regency have a value of 3.96 in the high category.

Determination of critical control points in the process of freezing whole gutted scale red snapper at PT Alam Jaya Surabaya

Salsabila Diva Aliyah — 2023-08-31

Red snapper is a type of food that is easily damaged and rotten. To maintain the freshness of fish for a long period of time, preservation can be done, one of which is by storing the fish at a low temperature or called freezing. During the freezing process biological, physical and chemical changes occur. Control measures are needed to prevent and minimize damage to red snapper products by implementing Critical Control Points (CCP), namely a step where controls can be carried out to prevent or eliminate food safety hazards. The aim of this research is to determine the application of CCP in freezing red snapper at PT Alam Jaya Surabaya through interviews with the Quality Control section and employees of PT Alam Jaya Surabaya as well as direct observation within the scope of CCP. PT Alam Jaya Surabaya has two CCPs, i.e. raw materials receiving (sorting) and the metal objects checking using metal detector. Corrective action taken in the process of receiving raw materials is by carrying out laboratory tests and organoleptic tests, as a form of prevention, as well as rejecting raw materials that do not meet standards. In the metal objects checking process, the corrective action that must be taken is to carry out calibration if deviated results are found, repair by a technician if an error occurs in the detector machine, as well as rejecting and not sending the product if the product contains metal fragments.

Implementation of Marpol 73/78 Annex I to prevent oil spills at Tanjung Perak Port, Surabaya

Muhamad Helga Fairuuz Alam — 2023-01-30

The increase in shipping activities is directly proportional to the threat of oil spills in the ocean, both from operational activities and ship accidents. Port of Tanjung Perak Surabaya has heavy traffic and continues to increase every year. This condition can pose a threat of increasing the risk of oil spills. Appropriate actions are needed to minimize the percentage of oil spill threats, one of which is by enforcing MARPOL 73/78 regulations which are intended for tankers. Specifically, MARPOL 73/78 Annex 1 is a regulation regarding marine pollution caused by oil or its derivatives from ship operational activities or accidental discharge of oil. This problem is the basis for the need to carry out research regarding the study of the implementation of MARPOL 73/78 Annex I to prevent oil spills at the Tanjung Perak Port, Surabaya, especially at the Nilam Terminal. Through distributing questionnaires, it was discovered that the prevention of oil spills at the Nilam Terminal-Tanjung Perak Port, Surabaya, carried out by 5 tankers, had an average assessment score of 18.4 or 92%, which means that the majority of oil tankers were very good at implementing international standards. MARPOL regulation 73/78 Annex I at Tanjung Perak Port, Surabaya.

Performance of refrigeration unit using monitoring of temperature, humidity and power consumption of freezer machine at Jaya Bahari cold storage

Radityo Nugrowibowo — 2023-08-30

Fishery products generally spoil more quickly than other animal meat products. After being caught, fish will experience changes in quality, the level of these changes will determine the shelf life of the fish. Handling fresh fish is the most important aspect of a fisheries business. Cold storage is a way of storing fish at a certain temperature which allows fresh fish to be stored for long periods, even months, to prevent bacterial growth. This research aims to evaluate the implementation of the Standard Operating Procedure (SOP) for storing fish in cold storage using the First In First Out (FIFO) system and to evaluate the quality of the cooling system using temperature and humidity monitoring at Jaya Bahari cold storage. The method used in this research is measurement, interviews and literature study. The process stages in receiving fish products start from unloading fish, thawing frozen fish, weighing and testing samples, sorting and calculating the percentage of rejects, as well as temporary storage by looking at various obstacles during the process of receiving raw materials. The performance of the data logger and big data each showed results that were not much different with the respective tool accuracy values of 99.26% for temperature measurements and 99.83% for humidity measurements. Defrosting ice for 2 hours can save power by 4.37%.