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OCEANOGRAPHY (88 journals)

Showing 1 - 77 of 77 Journals sorted by number of followers
Deep Sea Research Part II: Topical Studies in Oceanography     Hybrid Journal   (Followers: 29)
Deep Sea Research Part I : Oceanographic Research Papers     Hybrid Journal   (Followers: 23)
Estuaries and Coasts     Hybrid Journal   (Followers: 23)
Limnology and Oceanography     Hybrid Journal   (Followers: 22)
Progress in Oceanography     Hybrid Journal   (Followers: 21)
Journal of Marine Biology & Oceanography     Hybrid Journal   (Followers: 19)
New Zealand Journal of Marine and Freshwater Research     Hybrid Journal   (Followers: 18)
Journal of Physical Oceanography     Hybrid Journal   (Followers: 18)
Frontiers in Marine Science     Open Access   (Followers: 17)
Journal of Marine Sciences     Open Access   (Followers: 17)
Coastal Engineering     Hybrid Journal   (Followers: 15)
Advances in Oceanography and Limnology     Open Access   (Followers: 15)
Journal of Oceanography     Hybrid Journal   (Followers: 14)
Maritime Studies     Open Access   (Followers: 13)
International Journal of Oceanography     Open Access   (Followers: 12)
Advances in Statistical Climatology, Meteorology and Oceanography     Open Access   (Followers: 11)
Atmospheric and Oceanic Science Letters     Open Access   (Followers: 10)
Bulletin of Marine Science     Full-text available via subscription   (Followers: 9)
Fisheries Oceanography     Hybrid Journal   (Followers: 8)
Journal of Oceanography and Marine Science     Open Access   (Followers: 7)
Open Journal of Marine Science     Open Access   (Followers: 6)
Limnology and Oceanography: Methods     Hybrid Journal   (Followers: 6)
Journal of Operational Oceanography     Hybrid Journal   (Followers: 6)
Physical Oceanography     Hybrid Journal   (Followers: 6)
Paleoceanography and Paleoclimatology     Full-text available via subscription   (Followers: 5)
Marine Science     Open Access   (Followers: 5)
Limnology and Oceanography: Fluids and Environments     Full-text available via subscription   (Followers: 5)
Ocean Yearbook Online     Hybrid Journal   (Followers: 4)
Journal of Oceanology and Limnology     Hybrid Journal   (Followers: 4)
Limnology and Oceanography Letters     Open Access   (Followers: 4)
Journal of Marine Science and Engineering     Open Access   (Followers: 4)
African Journal of Marine Science     Hybrid Journal   (Followers: 4)
Oceanology     Hybrid Journal   (Followers: 3)
Journal of Aquatic Sciences     Full-text available via subscription   (Followers: 3)
Limnology and Oceanography e-Lectures     Open Access   (Followers: 3)
Journal of Coastal Development     Open Access   (Followers: 3)
Ciencias Marinas     Open Access   (Followers: 3)
Journal of Marine Science and Application     Hybrid Journal   (Followers: 3)
Journal of Ocean Engineering and Marine Energy     Hybrid Journal   (Followers: 3)
Tropical Oceanography     Open Access   (Followers: 2)
Indian Journal of Geo-Marine Sciences     Open Access   (Followers: 2)
Mediterranean Marine Science     Open Access   (Followers: 2)
Regional Studies in Marine Science     Hybrid Journal   (Followers: 2)
Annals of Marine Science     Open Access   (Followers: 2)
Limnology and Oceanography: Bulletin     Hybrid Journal   (Followers: 2)
Annals of Limnology and Oceanography     Open Access   (Followers: 2)
Development and Applications of Oceanic Engineering     Open Access   (Followers: 2)
Journal of Ocean Engineering and Technology     Open Access   (Followers: 1)
Acta Aquatica : Aquatic Sciences Journal     Open Access   (Followers: 1)
Ocean Life     Open Access   (Followers: 1)
Marine Systems & Ocean Technology     Hybrid Journal   (Followers: 1)
Marine Life Science & Technology     Hybrid Journal   (Followers: 1)
Journal of Ocean University of China (English Edition)     Hybrid Journal   (Followers: 1)
Journal of Ocean Engineering and Science     Open Access   (Followers: 1)
Coastal Engineering Proceedings : Proceedings of the International Conference on Coastal Engineering     Open Access   (Followers: 1)
Marine Technology Society Journal     Full-text available via subscription   (Followers: 1)
Scientia Marina     Open Access   (Followers: 1)
Western Indian Ocean Journal of Marine Science     Open Access   (Followers: 1)
Asian Journal of Fisheries and Aquatic Research     Open Access  
Thalassas : An International Journal of Marine Sciences     Hybrid Journal  
Oceans     Open Access  
Aquatic Research     Open Access  
Jurnal Kelautan Tropis     Open Access  
Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan     Open Access  
Journal of Agricultural and Marine Sciences     Open Access  
Turkish Journal of Maritime and Marine Sciences     Open Access  
Arquivos de Ciências do Mar     Open Access  
Scientific Drilling     Open Access  
Jurnal Kelautan : Indonesian Journal of Marine Science and Technology     Open Access  
Oceanologia     Open Access  
Revista de Gestão Costeira Integrada     Open Access  
Revista Ciencias Marinas y Costeras     Open Access  
Egyptian Journal of Aquatic Research     Open Access  
China Ocean Engineering     Hybrid Journal  
Revista de Biología Marina y Oceanografía     Open Access  
Latin American Journal of Aquatic Research     Open Access  
Acta Oceanologica Sinica     Hybrid Journal  
Similar Journals
Journal Cover
Acta Aquatica : Aquatic Sciences Journal
Number of Followers: 1  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2406-9825 - ISSN (Online) 2614-3178
Published by Universitas Malikussaleh Homepage  [3 journals]
  • Toxicity test of LC-50 (Lethal Concentration) surfactant LAS (Linear
           Alkylbenzene Sulfonate) against white snapper (Lates calcarifer)
           fingerlings on a laboratory scale

    • Authors: Anggi Mayulina Daulay, Erniati Erniati, Cut Meurah Nurul ‘Akla, Erlangga Erlangga, Imamshadiqin Imamshadiqin
      Pages: 133 - 138
      Abstract: LAS (Linear Alkylbenzene Sulfonate) surfactants are the main cleaning agents from the anionic group found in detergents that are widely used in Indonesia. LAS decomposes in surface water for 1-2 days, in sediments it decomposes for 1-3 days, in marine and estuarine systems it decomposes for 5-10 days. LAS is generally degraded by as much as 90% within 3 months, with a time ranging from 5-30 days (World Health Organization, 1996). LAS surfactants can cause damage to the gill epithelium and blockage of branchiola channels in fish. This study aims to determine the toxic effect of LAS surfactant on the survival of white snapper (Lates calcarifer) fry and to determine the toxicity value of LC50 (Lethal Concentration) of LAS surfactant to white snapper (Lates calcarifer) fry on a laboratory scale. This research was carried out on September 21 – October 04, 2021 at the Marine Science Laboratory, Faculty of Agriculture, Malikussaleh University using laboratory experimental methods with 5 treatments, namely: control treatment A (0 ppm), B (0.83 ppm), C (1.58 ppm). ), D (2.16 ppm), and E (2.91 ppm). The results of this study cause barramundi to experience irregular movements, mouth opening and operculum tend to be fast and irregular, scales are pale and peeling, and cause death, LAS surfactants affect water quality such as pH and dissolved oxygen, but have no effect on salinity and temperature. The 24-hour LC50 value is 1.95 ppm, the 48-hour LC50 value is 1.86 ppm, the 72-hour LC50 value is 1.70 ppm, and the 96-hour LC50 value is 1.58 ppm.Key words : LAS surfactant; LC50; toxicity; white snapper
      PubDate: 2022-12-06
      DOI: 10.29103/aa.v1i1.9503
      Issue No: Vol. 1, No. 1 (2022)
       
  • Identification and prevalence of ectoparasites in vannamei shrimp
           (Litopenaeus vannamei) in Pantai Gading Village, Secanggang District,
           Langkat Regency

    • Authors: Sumiati Sumiati, Rosmaiti Rosmaiti, Siti Komariyah
      Pages: 139 - 143
      Abstract: Vannamei shrimp (Litopenaeus vannamei) is a type of shrimp that is often cultivated. This study aims to identify ectoparasites and their prevalence in vannamei shrimp in the village of Pantai Gading, Kec. Secanggang Kab. Langkat. This research method is a survey method, where the observed ponds are 3 ponds, and samples are taken as much as 5% of the stocking density of biota. Samples were taken randomly and then examined at the Laboratory of the Faculty of Agriculture, Universitas Samudra. Organs observed included carapace, gills, swimming legs, walking legs, and tail. Based on the identification results, three types of infested ectoparasites were obtained, from the Phylum Protozoa including Zoothamnium sp., Epistylis sp., and Vorticella sp., with a prevalence of 83.33%, 10%, and 7.33%, respectively. The results of the observation of water quality parameters showed that the temperature ranged from 30.7 to 32.3 oC, pH 6.85-7.25, DO 2.6-3.6 mg/l, salinity 7-10 ppt, ammonia 0-0.01 ppm, nitrate 10-12 ppm, and nitrite 0-0.01 ppm. The highest prevalence of ectoparasites is Zoothamnium sp. Keywords: Ectoparasites; Identification; Prevalence; Vannamei Shrimp
      PubDate: 2022-12-06
      DOI: 10.29103/aa.v1i1.9504
      Issue No: Vol. 1, No. 1 (2022)
       
  • Density and width-weight relationship of blue swimming crab (Portunus
           pelagicus) in Letman Waters, Southeast Maluku

    • Authors: Ade Silaban
      Pages: 144 - 148
      Abstract: Blue swimming crab (Portunus pelagicus) is a fishery commodity with a fairly high selling value, both as a local commodity and as an export commodity. The high level of utilization and trade of blue swimming crabs is not matched by knowledge of how to conserve these resources which can result in a decrease in blue swimming crab resource stocks. Sampling was carried out in November 2021 using a selected random sampling method. The density of the male blue swimming crab is 94,118 ind/km2 and the female is 58,824 ind/km2. The results of the analysis of the width-weight relationship of the blue swimming crab showed the nature of the blue swimming crab growth was negative allometric with a b value of 2.579.Keywords: density, width-weight relationship, blue swimming crab, Letman
      PubDate: 2022-12-06
      DOI: 10.29103/aa.v1i1.9505
      Issue No: Vol. 1, No. 1 (2022)
       
  • Analysis of the yellowfin tuna marketing chain at PPP Pondok Dadap Sendang
           Biru, South Malang

    • Authors: Soni Andriawan, Ivony Rosa Aprilia, David Hermawan
      Pages: 149 - 154
      Abstract: The goal of this study was to investigate the yellowfin tuna marketing chain in PPP Pondok Dadap Sendang Biru. Additionally, this study determined the margin and price share earned by yellowfin tuna fishermen. This research employed a survey strategy that included direct observation and interviews. The data used were original sources collected during October and November 2021. The respondents were chosen using the snowball sampling technique, which is a technique for identifying informants or respondents who possess a wealth of information on the research being conducted. There were 37 respondents. According to the study's findings, there are three distinct channels for yellowfin tuna marketing at PPP Pondok Dadap Sendang Biru. In chain 2, retailers earned the largest overall margin of Rp. 8,864/Kg, or 29 percent. In channel 3, retailers earned the largest overall margin of Rp. 12,000/Kg, or 34%. The biggest Fisherman's share, at 62 percent, is in the type 2 marketing chain.Keywords: fisherman’s share; marketing chain; margin; tuna
      PubDate: 2022-12-06
      DOI: 10.29103/aa.v1i1.9508
      Issue No: Vol. 1, No. 1 (2022)
       
  • Analysis of suitability and carrying capacity of coastal tourism areas
           (case study at Sayang Heulang Beach, Garut Regency, West Java)

    • Authors: Heni Eni Fitriani, Atikah Nurhayati, Eri Bachtiar, Wahyuniar Pamungkas
      Pages: 155 - 163
      Abstract: Sayang Heulang Beach is a beach tourism area in Garut Regency, West Java. The Garut Regency Government carries out the construction and development of tourist facilities to support tourism activities and add attractions to increase the number of tourists. In the development and construction of tourist areas, it must adapt to the conditions of the surrounding environment so that its sustainability can be maintained. This study aims to analyze the suitability and carrying capacity of the area, as well as to determine the perception of the public and tourists on the condition of the tourist area of Sayang Heulang Beach. This research was conducted in December 2021 - May 2022 in Mancagahar Village, Pameungpeuk District, Garut Regency, West Java. The method used in this study is a survey method in the form of primary data collection including tourism suitability index parameters (depth, beach type, beach width, base material, current speed, water brightness, beach slope, land cover, availability of clean water and hazardous biota) and carrying capacity of the area, the perception of the community and tourists through the provision of questionnaires/questionnaires, as well as direct observation in the field. Secondary data is obtained through literature studies such as data from agencies. The results of this study indicate that the index value of the suitability of beach tourism at Sayang Heulang Beach at 3 points of the research station is 86% which is categorized (S1) as very suitable for beach tourism activities. The area's carrying capacity for beach recreational activities at Station I can accommodate 529 people/day, Station II can accommodate 125 people/day, and Station III can accommodate 153 people/day. The perception of the public and tourists in the Sayang Heulang Beach area on the variables of tourism potential and development, facilities, and services received a good perception according to the community and quite good according to tourists, while tourist attraction and accessibility received a fairly good perception.Keywords: Area carrying capacity; Beach tourism; perceptions; Public and tourist; Tourism suitability
      PubDate: 2022-12-06
      DOI: 10.29103/aa.v1i1.9509
      Issue No: Vol. 1, No. 1 (2022)
       
  • Identification of Osteochilus spilurus (Cyprinidae: Labeoninae) from North
           Lampung using meristic and cytochrome b gene

    • Authors: Ardiansyah Kurniawan, Dasa Yuli Pramono, Artin Indrayati, Ira Triswiyana
      Pages: 164 - 169
      Abstract: Osteochilus spilurus is one of the native fish in Indonesia. This species from North Lampung has variations in body shape with populations in Bangka and Belitung. Morphological plasticity and genetic variation are potential causes of these differences. To confirm this, it is necessary to identify molecular using the mitochondrial cytochrome b (cyt b) gene. Fish samples from North Lampung had morphological characters that matched to the description of O. spilurus. This research specimen was registered at the Bogor Zoological Museum as a supplementary note from Lampung. The phylogenetic construction shows a closer relationship between fish samples from North Lampung and O. spilurus from Bangka-Belitung, but there is a wide genetic distance between them. Genetic variation between islands that occur is predicted due to differences in ancient river flows in the past and the geographical isolation of the oceans for thousands of years.Keywords: Cytochrome b; Lampung; Osteochilus spilurus; Genetic Variation
      PubDate: 2022-12-06
      DOI: 10.29103/aa.v1i1.9510
      Issue No: Vol. 1, No. 1 (2022)
       
  • The statistical parameters analysis of bed load grains in Sungai Kakap
           Waters, Kubu Raya Regency

    • Authors: Salawati Salawati, Yoga Satria Putra, Muhardi Muhardi, Nurhasanah Nurhasanah, Riza Adriat
      Pages: 170 - 177
      Abstract: This study aims to analyze the statistical parameters of bed load grains in Sungai Kakap Waters, Kubu Raya Regency, West Kalimantan Province. Bed load sampling was carried out at seven stations, with five sampling points each. The hydrometer test on the sample was carried out to determine the grain type and size of the bed load, and statistical parameter analysis to determine the mean size, sorting, skewness, and kurtosis. The results showed that the fraction of bed load in the form of sand was 38.54%, silt was 42.11%, and clay was 19.28%. The bed load was dominated by three types, clayey clay, clay, and dusty clay. Based on the grain size parameters of the bed load, the mean size (in  units) is 0.94 – 2.24, with the classification of coarse sand to fine sand. The results also showed that the sorting obtained is poorly sorted, the skewness of the sediment is very fine skewed, and the kurtosis is platykurtic.Keywords: bed load; sorting; skewness; kurtosis
      PubDate: 2022-12-06
      DOI: 10.29103/aa.v1i1.9512
      Issue No: Vol. 1, No. 1 (2022)
       
  • The effect of addition of fish oil in commercial feed on growth of carp
           (Cyprinus carpio)

    • Authors: Munawwar Khalil, Salamah Salamah, Chairul Adzami
      Pages: 178 - 184
      Abstract: In carp farming, it is not enough to rely solely on efforts to spur the growth of the fish, but it needs to be accompanied by efficient measures for the feed, this can be done by improving the quality of feed, especially the Feed energy. The source of fat that can be added to feed as an energy source is fish oil and lecithin. This research was aimed to findout the impact of the given various doses addition of fish oil in the fish woof and to find out the best doses of the fish oil through the growth, the feed conversion ratio, and the progression of carp fish life The study was conducted on December to January at Hatchery and Technology Aquaculture Laboratory, Faculty of Agriculture, University of Malikussaleh. The method used a nonfactorial completely randomized design with four treatments and three replications, namely A (fish oil 0,90 %), B (fish oil 1,2 %), C (fish oil 1,5 %), and D commercial feed (control). The result showed that fish oil with different doses had very significantly different effects on growth, significantly different to feed conversion ratio, and not significantly different in survival. the best treatment was found in treatment C by giving fish oil 1,5 %.Keywords: feed; fish oil; growth; carp
      PubDate: 2022-12-06
      DOI: 10.29103/aa.v1i1.9513
      Issue No: Vol. 1, No. 1 (2022)
       
  • Analysis of oceanography parameters for the suistability tourism in Bangka
           Jaya Beach District of Dewantara, North Aceh

    • Authors: Erlangga Erlangga, Yusril Husaen, Yudho Andika, Imamshadiqin Imamshadiqin, Imanullah Imanullah
      Pages: 185 - 192
      Abstract: Bangka Jaya Beach is located in Krueng Geukueh Village, Dewantara sub-district. Many tourists who often visit Bangka Jaya beach tourism, therefore it is necessary to analyze the suitability of beach tourism, through this research it will be known the level of tourism suitability to the parameters that have been determined as a determination of the level of security for tourists who carry out beach tourism activities. This study aims to determine the condition of oceanographic parameters for the suitability of Bangka Jaya beach tourism in a beach tourism object and analyze the level of tourism suitability based on the potential of existing resources in the coastal area of Bangka Jaya. Primary data that must be taken in the field include tourism suitability data. The tourism suitability data taken include beach type, beach width, water depth, brightness, current speed, water base material, coastal slope, coastal land cover, hazardous biota, and freshwater availability. Primary data collection was carried out in the morning when the sea water was high and in the afternoon when the sea water was receding. The sampling method in this study used a purposive sampling method in December - January 2022. The method used was descriptive analysis using the Tourism Suitability Index (IKW) analysis. The results of the study of the tourism suitability index (IKW) obtained the results of measuring the parameters of tourism suitability of 90.47% which was a very suitable category (S1). The tourism suitability parameter in the tourism suitability index table (IKW) can be seen that almost every parameter is included in the very suitable category (S1) of all parameters there are two parameters that fall into the appropriate category (S2), namely the beach type parameter and the beach slope parameter.Keywords: Beach; Oceanography; Suitability; Tour
      PubDate: 2022-12-06
      DOI: 10.29103/aa.v1i1.9514
      Issue No: Vol. 1, No. 1 (2022)
       
  • Evaluation of different types of phytoplankton on rearing of vannamei
           shrimp larva (Litopenaues vanamei)

    • Authors: Ratnawati Ratnawati, Ilham Alimin, Subakti Hasan
      Pages: 193 - 200
      Abstract: This study aims to determine the effect of giving different types of phytoplankton on the survival, abundance of bacteria, and water quality of white shrimp (Litopenaeus vannamei). This research was carried out from October to November 2020 at the Laboratory of the Brackish Water Cultivation Center (BBAP) Ujung Batee, Aceh Besar. The larvae of the tested shrimp used were shrimp at Nauplius stages 5-6. The method used was a Completely Randomized Factorial Design (CRD) with 5 treatments and 4 replications. Provision of phytoplankton Thalassiosira sp and artificial feed (treatment A), Chaetoceros sp and artificial feed (treatment B), Skeletonema costatum (Treatment C), a combination of phytoplankton Thallasiosira sp, Chaetoceros sp, Skeletonema costatum and artificial feed (treatment D) and artificial feed alone (treatment E). The test larvae were placed in a container with a density of seed stocking for each container was 100 fish/liter with a maintenance period of up to Post larval stage 1 (PL 1). The frequency of giving phytoplankton was done 2 times a day, namely at 09.00 am and 15.00 pm. While the frequency of artificial feed was 6 times, namely at 07.00 WIB in the morning, 11.00 WIB, 16.00 WIB in the afternoon, 21.00 WIB at night, 01.00 WIB in the morning, and 04.00 WIB in the morning. The results obtained showed that the treatment with phytoplankton had a significant effect on the survival of vanname shrimp larvae. Therefore, it can be concluded that the highest survival rate is in treatment D.Keywords: phytoplankton; survival; vaname; water quality
      PubDate: 2022-12-06
      DOI: 10.29103/aa.v1i1.9515
      Issue No: Vol. 1, No. 1 (2022)
       
  • Nutritional and microbial safety of common commercial aquafeeds sold in
           Ogun State, Nigeria

    • Authors: T. A. Ojetayo, A. F. Durojaiye, N. A. Bamidele, O. M. Omotehinse, S. I. Teluwo
      Pages: 201 - 209
      Abstract: The nutritional and microbial safety of fish feeds were investigated in this study. Commercially available fish feed brands (Eco-float, Skretting, Top-Feeds, Blue Crown) were procured from sales outlets in Ogun State, Nigeria. Moisture ranged from 8.15 to 8.82 and these values were not significantly different (p>0.05) except for Topfeed. Skretting had the highest crude protein value (48.49±0.03) while Ecofloat recorded the least value of 45.30±0.06 (p<0.05). The values obtained for crude fibre, crude fat, ash, and carbohydrate were significantly different (p<0.05) across the sampled feeds. Crude fibre ranged from 4.31±0.04 in Ecofloat to 3.20±0.03 in Skretting. Skretting had the highest value recorded for crude fat (6.27±0.11) and ash (10.06±0.18) while Ecofloat had the least value of 1.29±0.00 and 8.01±0.17 respectively. Ecofloat had the highest value for carbohydrate (32.95±0.07), marginally followed by Topfeed (28.79±0.13) and Bluecrown (28.65±0.06) with Skretting recording the lowest value (23.55±0.38). The values for all the minerals analyzed were significantly different (p<0.05). Calcium had the highest values across the sampled feeds, followed by sodium while potassium recorded the lowest values. Tannin recorded the highest value amongst all the phytochemicals, followed by flavonoids and the least value was recorded for glycosides. Total aerobic count, total coliform count and total fungal count ranged from 1.61±0.01 to 3.53±0.0, 0.00±0.00 to 3.10±0.01 and 0.00±0.00 to 2.34±0.05 respectively. Isolated bacteria include Staphylococcus aureus, S. saprophyticus, Klebsiella spp, Bacillus spp, and Escherichia coli. The fungi identified were Aspergillus niger, Rhizopus spp, Aspergillus flavus, Geotrichum spp, and Saccharomyces spp. Hence, there is a need for quality monitoring.Keywords: aquafeed safety, microbial risk, Nigeria
      PubDate: 2022-12-06
      DOI: 10.29103/aa.v1i1.9518
      Issue No: Vol. 1, No. 1 (2022)
       
  • Coral community structure at Celukan Bawang Reefs, Buleleng Regency, Bali
           Island

    • Authors: Widiastuti Widiastuti, Daniel Tosan Kaigere
      Pages: 210 - 215
      Abstract: Celukan Bawang water has a strategic location in the northern part of Bali Island that threatened its surrounding coral reefs by shipping, power plant, industrial activities, and shrimp ponds. However, there is limited data on its biodiversity status. Therefore, it is necessary to provide factual information regarding the coral reef ecosystem condition in scientific data. This study aimed to measure the coral reef`s components and the community structure. The coverage of coral reef components was collected based on the UPT method, while community structure data was taken in a belt transect within two different sites. All data was collected in December 2020. The difference in coral reef ecosystem components among sites was analyzed with the Paired-T and Kruskal-Wallis tests (for the non-homogenous data). Results showed that the coverage of live coral colonies in Site 1 is categorized as poor, whereas Site 2 is classified as moderate. Reefs were dominated by type growth non-Acropora massive from the family of Faviidae and encrusting from the family of Pocilloporidae. Statistically, there were no significant differences in all coral reef ecosystem components among Sites 1 and 2. Diversity and Evenness Indices were similarly low in the two sites. The dominance Index demonstrated that Site 1 was lower than Site 2 (moderate). It might be related to the coverage of the abiotic component, which, despite being statistically insignificant, showed that Site 2 has a higher percentage of rubbles and rocks. Rubble and rock can be a substrate for the coral juvenile to attach.Keywords: Community structure; Coral reef; Celukan Bawang; Buleleng
      PubDate: 2022-12-06
      DOI: 10.29103/aa.v1i1.9519
      Issue No: Vol. 1, No. 1 (2022)
       
  • Antioxidant activity of corncob liquid smoke and traditional to smoked
           milkfish (Chanos chanos Forsk) during frozen storage

    • Authors: Aryanti Indah Setyastuti, Rr. Nurina Ayu, Sarmin Sarmin
      Pages: 216 - 221
      Abstract: Smoking is one of the efforts to maintain the quality of smoked fish. Phenol compounds in smoke can act as natural antioxidants to inhibit lipid oxidation. Milkfish have a high lipid content after protein, which can undergo lipid oxidation during processing and storage. The aim of this study was to observe the effect of antioxidant activity on different smoking methods and storage time for 28 days at freezing temperature on the quality of smoked milkfish. Corn cob liquid smoke was used due to phenol content as an antioxidant. The design used in this study was a factorial completely randomized design that consisted of two factors. The first factor is the difference in smoking methods, corncob liquid smoke (Ac) and Traditional (Tr). While the second factor is the length of storage on day 0 (T0); day 14 (T14) and day 28 (T28). The test parameters observed were analysis of phenol content; PV; TBA; lipid content; and pH. The results of this study showed that different smoking methods and storage time at freezing temperature showed significant differences (P<0.05) in the phenol value; PV; TBA; lipid value; and pH of smoked milkfish. During storage, the phenol value; lipid; and pH of smoked milkfish decreased. Meanwhile, the value of PV and TBA increased as a result of the lipid oxidation process so as to produce peroxide from detheorized fat. The PV and TBA values of smoked milkfish are still acceptable by consumers.Keywords: Antioxidant acticvity; Corncob liquid smoke; Milkfish; Traditional
      PubDate: 2022-12-06
      DOI: 10.29103/aa.v1i1.9520
      Issue No: Vol. 1, No. 1 (2022)
       
 
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