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Effectiveness of fermented cabbage to increase storage time of Indian mackerel (Rastrelliger sp.) at room temperature Dian Puspitasari; Desrita Desrita
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 8: No. 1 (April 2021)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v8i1.3830

Abstract

Makarel India adalah ikan air laut yang umum dikonsumsi. Keunggulan ikan tenggiri adalah memiliki cita rasa yang enak, harga yang terjangkau, dan dapat diolah menjadi berbagai macam masakan. Kelemahan dari ikan kembung India adalah mudah untuk mengalami penurunan kualitas. Salah satu cara untuk memperpendek umur simpan adalah dengan penambahan es. Cara pengawetan lainnya adalah dengan memanfaatkan bakteri asam laktat hasil fermentasi kubis. Kubis digunakan sebagai bahan starter fermentasi karena memiliki harga yang terjangkau dan mudah didapatkan. Tujuan penelitian ini adalah untuk mengetahui umur simpan ikan tenggiri yang direndam menggunakan larutan fermentasi kubis dengan lama waktu 1 jam, 2 jam, dan 3 jam. Sampel ikan kembung India berasal dari pasar ikan. Ikan dicuci menggunakan air bersih, kemudian direndam menggunakan larutan fermentasi kubis dengan lama waktu perendaman 1 jam, 2 jam, dan 3 jam. Parameter yang diamati adalah kenampakan mata, insang, lendir pada permukaan tubuh, daging, bau, dan tekstur. Hasil penelitian menunjukkan umur simpan ikan tenggiri pada suhu ruang adalah 11 jam (untuk kontrol), sedangkan umur simpan ikan tenggiri direndam selama 1 jam, 2 jam, dan 3 jam adalah 14 jam. Pengujian menggunakan Anova menunjukkan nilai signifikan sebesar 0,351. Artinya lama perendaman menggunakan larutan fermentasi kubis tidak mempengaruhi umur simpan ikan tenggiri. Hasil penelitian menunjukkan umur simpan ikan tenggiri pada suhu ruang adalah 11 jam (untuk kontrol), sedangkan umur simpan ikan tenggiri direndam selama 1 jam, 2 jam, dan 3 jam adalah 14 jam. Pengujian menggunakan Anova menunjukkan nilai signifikan sebesar 0,351. Artinya lama perendaman menggunakan larutan fermentasi kubis tidak mempengaruhi umur simpan ikan tenggiri. Hasil penelitian menunjukkan umur simpan ikan tenggiri pada suhu ruang adalah 11 jam (untuk kontrol), sedangkan umur simpan ikan tenggiri direndam selama 1 jam, 2 jam, dan 3 jam adalah 14 jam. Pengujian menggunakan Anova menunjukkan nilai signifikan sebesar 0,351. Artinya lama perendaman menggunakan larutan fermentasi kubis tidak mempengaruhi umur simpan ikan tenggiri.
Potensi, Tingkat Pemanfaatan dan Keberlanjutan Ikan Tembang (Sardinella spp.) di Perairan Selat Malaka, Kabupaten Serdang Bedagai, Sumatera Utara Rina Sari Lubis; Miswar Budi Mulya; Desrita Desrita
AQUACOASTMARINE Vol 1, No 1 (2013): JURNAL AQUACOASTMARINE VOLUME 1, NO 1, DESEMBER 2013
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Tembang fish (Sardinella spp.) is a small pelagic fish, which live inschooling. This fish can be caught using drift gill net gear, purse seine, handlinesand payang. The purpose of this study was to determine the potential ofsustainability with optimum fishing effort, utilization rates and insistence,sustainability and management of fish resources in Malacca Strait. The analysisof secondary data from 2008 to 2012 obtained from the Department of Marineand Fisheries Serdang Bedagai regency, and primary data obtained by performeda questionnaire related to the sustainability of tembang fish.The potential prediction performed with Fox model. The result shown thatMSY was 5.930,582 tons/year and optimum effort was 22.466 trips/year. Averageutilization rate of 44,95%, with an average rate of 77,26% insistence, whileallowable catch 4.744,465 tons/year. The sustainability of tembang fish,dimensional the ecological, technologies and institutions into unsustainablecategory. While economic and social dimensions included the category ofsustainable. The management efforts was by setting fishing season, the selectivityof fishing gear, prohibition of fishing gear and quota restrictions arrest.Keywords: Malacca Strait, Potential, Utilization, Sustainability, Sardinella spp.
STUDI ASPEK REPRODUKSI IKAN BAUNG (Mystus nemurus Cuvier Valenciennes) DI SUNGAI BINGAI KOTA BINJAI PROVINSI SUMATERA UTARA Vindy Rilani Manurung; Yunasfi Djayus; Desrita Desrita
AQUACOASTMARINE Vol 1, No 1 (2013): JURNAL AQUACOASTMARINE VOLUME 1, NO 1, DESEMBER 2013
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Baung fish (Mystus nemurus CV) is a fish of high economic value. Thepurpose of research to reproductive aspects (sex ratio, gonad maturity level (TKG),gonad maturity index (IKG), first time size mature gonad, fecundity and eggdiameter). The study was conducted from March to May 2013 at three locations . Themethod used descriptive analytic .Sex ratio of Baung fish with unbalanced sex ratio with a value of 4.5>3.8.Gonad maturity level (TKG) found I- IV, while the male fish only I- III. gonadmaturity index (IKG) female fish 0.01-7.33% and 0.01-0.26% for male fish . The firstgonad size mature female fish is 268 mm . Fecundity of Baung fish is 18229-44 392eggs . Distribution diameter on the distribution of fish eggs female 0.38 to 2.05 mm.Keyword : Baung fish, Bingai river, Fish reproduction, Mystus nemurus CV.
Aktivitas Antimikroba Biji Teratai (Nymphaea pubescens L.) Terhadap Bakteri Aeromonas hydrophila, Streptococcus agalactiae dan Jamur Saprolegnia sp. Dewi Roma Widya; Dwi Suryanto; Desrita Desrita
AQUACOASTMARINE Vol 2, No 1 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 1, AGUSTUS 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Disease prevention in fish using chemicals or antibiotics leads to microbial resistance. One alternative to control the fish disease is to use plant extract. The aim of this study was to investigate the antimicrobial activity of lotus seeds (Nymphaea pubescens L.) on pathogenic bacteria and fungi in fish. The lotus seed was extracted with several solvent, such as n-hexsane, ethyl-acetate, and methanol. Antimicrobial activity assay was carried out using disc diffusion method. Phytochemical preliminary test was done to determine seed chemical compounds. The brine shrimp lethality test was utilised to determine the extract toxicity. The result showed that all extracts inhibited Aeromonas hydrophila, Streptococcus agalactiae, and Saprolegnia sp. growth to some extent. The extract was to inhibit more to S. agalactiae with inhibition zone of 10.72 mm. In general extract of n-heksana was to inhibit more to the test microbes. Cytotoxic activity (LC50) was <1000 μg/ml. Preliminary test of phytochemical compound showed that extracts of lotus seed contains alkaloid, fenolic, glicoside, saponin and steroid/terpenoid.Keywords: Antimicrobial activity, microbial pathogenic, Nymphaea pubescens L.
Bivalvia di Perairan Pantai Cermin, Kabupaten Serdang Bedagai Nanda Mutia Hardianti; Yunasfi Djayus; Desrita Desrita
AQUACOASTMARINE Vol 2, No 1 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 1, AGUSTUS 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

The Cermin Beach has a higher natural value such as biodiversity, one of them is bivalve. The objective this research is to study the community structure of bivalve and waters condition in Pantai Cermin of Serdang Bedagai Regency. This research was conducted since June - August 2013 using transec method at 3 station and 4 time interval of sampling. The observed physical and chemical parameter are temperature, salinity, pH, DO, TSS, and type of basic substrate.Bivalve are found in Cermin Beach of Serdang Bedagai Regency consists 15 species, i.e. The species with most value on each station is Donax cuneatus with the abudance in station I that is 150 ind/m2, the abudance in station II that is 331 ind/m2 and abudance in station III is 247 ind/m2. The species diversity index of bivalve range from 0,85 – 1,22, uniformity index of bivalve range from 0,18 – 0,30, domination index of bivalve range from 0,35 – 0,57 and pollution index range from 1,23 – 1,61 is lightly polluted.Keywords: Bivalvia,Cermin Beach, Community Structure
PETA SEBARAN SALINITAS PADA SUMUR BOR DI KELURAHAN BELAWAN II KECAMATAN MEDAN BELAWAN Intan Iksaura Ginting; Yunus Afifuddin; Desrita Desrita
AQUACOASTMARINE Vol 2, No 1 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 1, AGUSTUS 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

People activity in sub district Medan Belawan II require very large. The purpose of this research was to analyze of salinity values and the type of water well drilling in the area of research, analyze the effect of depth of the well to salinity value, analyze salinity distribution map and figuring out how to manage water resources in Belawan II village. This research was conducted on june-july 2013 in village Belawan II, Subdistrict Medan Belawan, Medan. This research used ArcGIS 10 to got a map of the distribution of salinity. The result showed that number of wellbore included in good classification (333mg/l) was 4%, permitted (666-1333 mg/l) was 27%, doubting (1666-2000 mg/l) was 46% and dangerous (2333-3000 mg/l) was 24%. Freshwater was 4%, between fresh water and brackish water was 27% and brackish water was 69%. at a depth of 65-100m, were included in dangerous category was 24%, suspect 18%, allowed 1% and good category not found. At a depth > 100 meters the waters were included in the hazardous category not found, suspect 9%, allowed 44%, and good category was 4%. The most dominating salinity distribution was 1666 mg/l-2000 mg/l were included in suspect category. The most dominating salinity distribution was 1666 mg/l-2000 mg/l were included in suspect category. This result showed that intrusion has occurred in the wellbore, and the water quality wasn’t good to serve as drinking water.Keyword : Intrusion, Salinity, Wellbore
STUDI KLOROFIL-a DI KAWASAN PERAIRAN BELAWAN SUMATERA UTARA Study of chlorophyll-a around sea of Belawan, North Sumatera Amanda Paramitha; Budi Utomo; Desrita Desrita
AQUACOASTMARINE Vol 2, No 2 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 2, DESEMBER 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

There many activities around marine Belawan alters the marine water quality of Belawan. The information and understanding of environmental change are indispensable in ecosystem monitoring efforts. This research aims for knowing the study of chlorophyl-a, and the relationship between physical and chemical factors was done on Desember 2013 – February 2014 in sea of Belawan, North Sumatera. The sampling was determined based on four location which is in various activities. There are 4 sampling in 3 months. The analysis of other factor, such as water temperature, pH, brightness, salinity, DO, nitrate, phosphate, and chlorophyll. The result of research showed there was a relation of physical chemical factors in sea of Belawan, North Sumatera. The range of the chlorophyll-a is 1,93 – 5,96 mg/ m3. The highest concentration of chlorophyll-a was located in floating net cages in the range of 4,06 – 5,96 mg/m3. The lowest concentration of chlorophyll-a was located in offshore in the range of 1,93 – 2,53 mg/m3. The average value chlorophyll top are on the location 4 and the lowest in the location.Keywords : Chlorophyll-a, sea of Belawan
Analisis Kualitas Air Akibat Keramba Jaring Apung Di Danau Toba Dusun Sualan Desa Sibaganding Kabupaten Simalungun Sumatera Utara Sudoyo Lumban Tobing; Ternala Alexander Barus; Desrita Desrita
AQUACOASTMARINE Vol 2, No 4 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 4, DESEMBER 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Sualan hamlet of Sibaganding Village is one of the territorial waters Lake Toba which used for floating nets activity. Floating nets aquaculture activities can affect the water quality Lake Toba in the hamlet of Sualan. This research aims to know the water quality based on physical and chemical parameters. Physical and chemical parameters the water analyzed by the storet method. The Research was starting from April up to May 2014. The research method used was Purposive Random Sampling. There are station I (Keramba), station II (Transition), and Station III (control). The value of physical and chemical parameters such as temperature 26,00 ºC – 28,00 ºC, turbidity (TSS) 0,89 – 5,21 mg/l, DO 5,41 – 8, 24 mg/l, pH 6,40 − 7,30, BOD 7,30 – 6,40 0,59 – 1,27 mg/l, nitrate 0,69 – 2,10 mg/l, phosphate 0,11 – 0,28 mg/l. According to physical and chemical parameters of water quality for the first station refers to third class. While on the second and the third station are refers to first class.Keywords: Water quality, Floating nets, Lake Toba
Potensi, Tingkat Pemanfaatan dan Keberlanjutan Ikan Sebelah (Psettodes spp.) di Perairan Selat Malaka, Kabupaten Serdang Bedagai, Sumatera Utara Rina D’Rita Sibagariang; Miswar Budi Mulya; Desrita Desrita
AQUACOASTMARINE Vol 2, No 4 (2014): JURNAL AQUACOASTMARINE VOLUME 2, NO 4, DESEMBER 2014
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Sebelah fish (Psettodes spp.) is a demersal fish, which live in swallow waters and flat bottom. This fish can be caught using fish net, drift gill nets, and set gill nets. The purpose of this research was to determine the potential of sustainable with optimum effort, utilization rates and insistence, sustainability and management of fish resources in Malacca Strait. Research had been conducted in Mei – September 2014. The analysis of secondary data from 2009 – 2013 obtained from the Department of Marine and Fisheries Serdang Bedagai regency and Department of Marine and Fisheries North Sumatra province, and primary data obtained by performed questionnaires correspondent with the fishermen about the sustainability of Sebelah fish. The potential of sustainable prediction performed with Fox model. The result shown that MSY was 1.708.839 kg/year and optimum effort was 47.076 trips/year. Average utilization rate of 58,86% with an average insistence rate of 62,34%, while allowable catch 1.367.071 kg/year. The dimensional ecological, social, tecnological and ethical of Sebelah fish included in the sustainable category. The economic dimension included in the fairly continuous category. The management efforts was by selectivity of fishing gear, disallowance of fishing gear and control of fishing effort.Keywords: Psettodes spp., potential, utilization, sustainability, Malacca Strait.
KEANEKARAGAMAN IKAN DI SUNGAI BELUMAI KABUPATEN DELI SERDANG Diversity of fish in Belumai River, Deli Serdang District M Mahrozi Sagala; Pindi Patana; Desrita Desrita
AQUACOASTMARINE Vol 3, No 1 (2015): JURNAL AQUACOASTMARINE VOLUME 3, NO 1, PEBRUARI 2015
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

ABSTRACTThis research was conducted in Belumai River, Deli Serdang District in May-June 2014. The aim this research was to measure relative abundance, diversity, evennes and dominance of fish and the relationship with physical and chemical factors of water. The method used “Purposive Random Sampling”. Fisihing gear used gill net, fishnet stocking and fish rod. Data were analyzed descriptive and multiple regression analysis. This research in 8 families, 12 genus, 14 species and 204 individual fishes. Diversity index was 1,18 – 1,91, evennes index 0,73 – 0,86 and dominance index 0,17 – 0,37. Temperature was 28 – 29,75oC, turbidity 3,25 – 14,98 NTU, depth 0,78 – 2,58, flow velocity 0,18 – 0,77 m/sec, pH 5,9 – 7,2 and DO 1,81 – 5,02 mg/l. Regression results showed strong relationship among components. It’s seen from the range of the coefficient determination (R2) 0,866 – 0,900.Keywords: River, Diversity, Fish, Belumai.