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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences BULETIN OSEANOGRAFI MARINA Management of Aquatic Resources Journal (Maquares) Journal of Marine Research Jurnal Kelautan Tropis Squalen Bulletin of Marine and Fisheries Postharvest and Biotechnology
Sri Sedjati
Departemen Ilmu Kelautan, Fakultas Perikanan Dan Ilmu Kelautan, Universitas Diponegoro Marine Science Techno Park, Universitas Diponegoro
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Environmental Science Immunology & microbiology

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HUBUNGAN TEKSTUR SEDIMEN DAN KANDUNGAN BAHAN ORGANIK DENGAN KELIMPAHAN MAKROZOOBENTOS DI MUARA SUNGAI SILANDAK, SEMARANG Meynita, Dewi; Muskananfola, Max Rudolf; Sedjati, Sri
Management of Aquatic Resources Journal (MAQUARES) VOLUME 5, NOMOR 4, TAHUN 2016
Publisher : Departemen Sumberdaya Akuatik,Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (165.648 KB)

Abstract

ABSTRAK Muara Sungai Silandak merupakan salah satu subsistem drainase wilayah Semarang Barat yang bermuara ke teluk Semarang.Muara merupakan tempat akumulasi buangan limbah domestik dan pabrik. Dilakukannya reklamasi pantai pada bagian hilir Muara Silandak dapat menyebabkan sedimentasi yang akan mempengaruhi keberadaan makrozoobentos. Tujuan dari penelitian ini adalah mengetahui tekstur sedimen, kandungan bahan organik dan kelimpahan makrozoobentos.Materi yang digunakan dalam penelitian ini adalah sampel sedimen dan sampel makrozoobentos pada setiap stasiun yang berlokasi di muara sampai pesisir Pantai Maron.Penelitian ini dilakukan dengan sampling acak atau Random Sampling dengan empat stasiun.Pada setiap stasiun terdapat tiga titik sampling, sampel sedimen dan makrozoobentos diambil pada setiap titik kemudian dikomposit perstasiun.Sampling dilakukan pada interval waktu dua minggu dengan tiga kali pengulangan.Hasil analisis tekstur sedimen pada stasiun I memiliki tekstur liat sedangkan stasiun II, III dan IV memiliki tekstur lempung liat berpasir. Hasil kandungan bahan organik pada stasiun I,II, III dan IV sebesar 19,33%, 15,20%, 13,40% dan 10,67%. Sedangkan kelimpahan makrozoobentos yang didapatkan stastiun I sebesar 652 ind/m3 , stasiun II 696 ind/m3 , stasiun III 783 ind/m3 (tertinggi) dan stasiun IV 261 ind/m3 dengan katagori indeks keanekaragaman belum tercemar dan tidak adanya jenis yang mendominasi.  Kata kunci: Tekstur Sedimen, Kandungan Bahan Organik, Kelimpahan Makrozoobentos, Muara Sungai Silandak Semarang.   ABSTRACT Silandak Estuary is one of the subsystem drainage areas in West Semarang that flow into the bay of Semarang. The estuary is a place of accumulation of domestic sewage and factories. Coastal reclamation at the downstream estuary Silandak causing sedimentation that will affect the existence of macrozoobenthos. The purpose of this research was to know the sediment texture, organic matter content and abundance of macrozoobenthos. The material used in this research is the sediment samples and samples of macrozoobenthos at any station located at the estuary to the coast of Maron. The research used random sampling with four stations. At each station there are three sampling points, samples of sediment and makrozoobentos taken at any point which then composite sample at each station. The sampling was done with time interval of two weeks with three repetitions. The results of the sediment texture at the station I has the texture of clay while the station II, III and IV have a texture of sandy clay loam. The results of the organic material content at stations I, II, III and IV is amounted 19,33%, 15,20%, 13,40% and 10,67% and while abundance of makrozoobentos at station I are 652 ind/m3, station II 696 ind/m3, station III 783 ind/m3(higher) and station IV 261 ind/m3 with a diversity index categories clean water zone and not found the dominant species. Keywords: Sediment Textures, Organic Matter Contents, Abundance of Makrozoobentos, Silandak Estuary Semarang. 
OPTIMASI PENGGUNAAN ADSORBEN KITOSAN 0,9% TERHADAP DAYA SERAP AMONIAK DALAM AIR LIMBAH KILANG MINYAK OUTLET IMPOUNDING BASIN (OIB) PERTAMINA RU VI BALONGAN, INDRAMAYU Novritasari, Eksa; Sedjati, Sri; Yulianto, Bambang
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (158.031 KB) | DOI: 10.14710/jmr.v3i1.4597

Abstract

Products of petroleum of liquid waste can be caused pollution in the ocean. Waste contains of chemical element especially ammonia. High concentration of ammonia has toxicity for human and aquatic ecosystems. This Research was aimed to decrease concentration of ammonia by chitosan liquid. The research was conducted in Technological Laboratory of Pertamina RU VI Balongan Indramayu on March - April 2013. The Method of this research used randomized design with kind of treatments is 4 levels and 3 repetition. Treatments of this research used chitosan liquid 0,9% with different variation between chitosan liquid and sample of waste oil refinery, such as : (A) 4%; (B) 8%; (C)12%; (D)16%, with 30 minutes time contact. The largest decrease of ammonia contained in (C) 12% ± 12,83 mg/L (48,67%) and optimum adsorption is 10,28 % ± 13,87 mg/L (44,52%).
STUDI PENGGUNAAN KITOSAN TERHADAP PENURUNAN KADAR AMONIAK PADA LIMBAH CAIR KILANG MINYAK OUTLET IMPOUNDING BASIN (OIB) PERTAMINA RU VI BALONGAN, INDRAMAYU Utami, Risnita Tri; Sunaryo, Sunaryo; Sedjati, Sri
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (158.362 KB) | DOI: 10.14710/jmr.v3i1.4593

Abstract

Development of industrial activities especially refining oil industry is a sector with large potential as a source of wastewater pollution. Mud waste from crude oil is the final waste from refining processes. Ammonia content of the oil refining industry is found in large quantities. This study was aimed to decrease the concentration of Ammonia used Chitosan. The study was conducted in Technologycal Laboratory of Pertamina RU VI Balongan, Indramayu on March-April 2013. The method used in this study was a completely randomized design with five treatments and three repetitions. Treatments in this study were the differences of Chitosan concentrations, i.e.: A 0,0%, %, B 0,3%, C 0,6%, D 0,9% and E 1,2% with contact time of 30 minutes. ASTM (American Society for Testing Materials), were used to analyze Ammonia concentration. The maximum adsorption of Ammonia in Chitosan solution with a concentration of 0,83% in the amount of 48,79%.
Pengaruh Konsentrasi Abu Gosok dan Waktu Perendaman Air Terhadap Kandungan Nutrisi Tepung Buah Mangrove Avicenia marina Permadi, Yusup Bayu; Sedjati, Sri; Supriyantini, Endang
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (235.627 KB) | DOI: 10.14710/jmr.v1i1.885

Abstract

Nowadays, there are not much knowledge of mangrove fruit. One of mangrove species which has been used as source of food is A.marina. There are toxins such tannin and HCN in mangrove fruit. They may inhibit food process of mangrove fruit. So, they must be removed. The material for removing the toxins is ash powder. This study used factorial pattern of Randomized Complete with split plot Design with 2 treatments and 3 replication,i.e: water immersion time (1,2,3 day) and ash powder concentration (5,10,15% unity). Data was analyzed by two-way anova using SPSS. The result indicated that boiling treatment with ash powder and water immersion had a significant effect ( P<0,05) toward content of carbohydrate, lipid, protein of Avicennia marina fruit flour. Boiling treatment with 15 % ash powder and 3 days immersion had best result toward content of protein and lipid of Avicennia marina flour, while boiling treatment with 5% ash powder and 2 days immersion had best result toward content of carbohydrates of Avicennia marina flour.
Kemampuan Adsorbsi Kitosan Dari Cangkang Udang Terhadap Logam Timbal Iriana, Deska Dwi; Sedjati, Sri; Yulianto, Bambang
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (637.057 KB) | DOI: 10.14710/jmr.v7i4.25929

Abstract

ABSTRAK : Logam berat yang terkandung didalam limbah industri akan menjadi bahan pencemar berbahaya apabila melebihi ambang batas yang telah ditentukan. Salah satu pencegahan yang dapat dilakukan yaitu dengan melakukan pengolahan terhadap limbah industri menggunakan kitosan untuk menurunkan kadar logam berat timbal (Pb) melalui proses adsorbsi. Penelitian ini bertujuan untuk mengetahui kemampuan kitosan dalam menurunkan kadar logam berat timbal (Pb) dan mengetahui kapasitas adsorbsinya. Penelitian ini dilakukan dalam skala laboratorium dan rancangan penelitian yang digunakan adalah rancangan acak lengkap dengan tiga kali pengulangan. Perbedaan perlakuan kitosan yang digunakan yaitu K (Kontrol), A (0,5%), B (1%), C (1,5%), D (2%) dengan logam berat timbal (pb) awal sebesar 2,85 ppm. Kitosan masing-masing dilarutkan dalam asam asetat 1% sebanyak 10 ml. Larutan kitosan dengan perbedaan konsentrasi direaksikan dengan larutan logam timbal (Pb) 90 ml menggunakan magnetik stirer. Reaksi dilakukan selama 30 menit dalam 100 rpm. Pengukuran kadar logam berat timbal (Pb) menggunakan Atomic Adsorption Spectrofotometri (AAS). Hasil penelitian menunjukkan adanya penurunan kadar logam berat timbal (Pb). Daya serap kitosan pada konsentrasi A (0,5%) adalah 94,07%; B (1%) adalah 94,39%; C (1,5%) adalah 94,39% dan D (2%) adalah 94,97%. Kapasitas adsorbsi yang dihasilkan pada konsentrasi A (0,5%) adalah 5,36 mg/g; B (1%) adalah 2,69 mg/g; C (1,5%) adalah 1,79; dan D (2%) adalah 1,35mg/g. Daya serap tertinggi pada konsentrasi 2% yaitu 94,97% dan kapasitas adsorbsi tertinggi sebesar 5,36 mg/g pada konsentrasi 0,5%. ABSTRACT : Heavy metal which is contained in industrial waste will be dangerous if contaminants exceed the threshold. One of the precautions that can be done is processing the industrial waste use chitosan to reduce levels of heavy metals lead (Pb) through adsorption process. This study aims to determine the ability of chitosan to reduce level of heavy metals lead (Pb) and determine the capacity of its adsorption. The study was conducted in laboratory scale and the design that used in this experiment is complete randomized design with three replications. Different chitosan treatments that used are K (control), A (0.5%), B (1%), C (1.5%), D (2%) with 2,85 ppm heavy metal lead (pb) as early concentration. Each chitosan treatments dissolved in 1% acetic acid 10 ml. Chitosan solution with different concentrations of the metal reacted with lead (Pb) solution of 90 ml using a magnetic stirrer. The reaction was performed for 30 minutes in 100 rpm. Measurement of levels of heavy metals leads (Pb) using Atomic Adsorption Spectrofotometri (AAS). The results showed a decrease in levels of heavy metals lead (Pb). Absorptive capacity of chitosan at a concentration of A (0.5%) is 94.07%; B (1%) is 94.39%; C (1.5%) is 94.39% and D (2%) is 94.97%. Adsorption capacity resulting in the concentration of A (0.5%) is 5.36 mg/g; B (1%) is 2.69 mg/g; C (1.5%) is 1.79 mg/g; and D (2%) is 1,35 mg/g. The highest absorption capacity is in concentration of 2% is 94.97% and the highest adsorption capacity is 5.36 mg/g at a concentration of 0.5%
STUDI KANDUNGAN LOGAM BERAT BESI (Fe) DALAM AIR, SEDIMEN DAN JARINGAN LUNAK KERANG DARAH (Anadara granosa Linn) DI SUNGAI MOROSARI DAN SUNGAI GONJOL KECAMATAN SAYUNG, KABUPATEN DEMAK Firmansyaf, Dhimas; Yulianto, Bambang; Sedjati, Sri
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (207.171 KB) | DOI: 10.14710/jmr.v2i2.2350

Abstract

This study aimed to determine: Fe metal content and Fe pollution levels in water, sediment, and blood cockle (Anadara granosa) in Morosari River and Gonjol River, and coastal adjacent, Prefecture Sayung, Demak Regency. Sampling was carried out based on different time periods or seasons, i.e. July 2010 and November 2011. The research method applied was the case study method. While the selection of sampling locations, using the method of judgment (purposive sampling method). Heavy metal analysis performed using Atomic Absorbtion Spectrophotometry (AAS). The results of Fe metal content in the water showed, in July 2010: the highest at Station A4 = 25.29 mg/l and the lowest at Station B2 = 1.35 mg/l; in November 2011: the highest at Station A3 = 3.23 mg/l and the lowest at Station A2 = 0.42 mg/l. Fe metal content in the sediment, in July 2010: the highest at station B6 = 32477.34 mg/kg and the lowest at Station B1 = 14017.14 mg/kg, while in November 2011: the highest at Station A5 = 68065.87 mg/kg and lowest at Station B1 = 33667.39 mg/kg. Fe metal contents in soft tissue blood clam (Anadara granosa) in July 2010: the highest at station B5 = 2068.22 mg/kg, while in November 2011: the highest value found in the A4 station at 8.25 mg/kg.
Korelasi Kandungan Nitrat Dan Fosfat Dalam Air Dan Sedimen Dengan Kerapatan Lamun Yang Berbeda Di Perairan Teluk Awur, Jepara Widiyanti, Victoria Ratna; Sedjati, Sri; Nuraini, Ria Azizah Tri
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (433.534 KB) | DOI: 10.14710/jmr.v7i3.25909

Abstract

ABSTRAK : Lamun merupakan satu-satunya tumbuhan berbunga yang ada di lingkungan laut. Ketersediaan nutrien di lingkungan mempengaruhi pertumbuhan lamun. Nitrat dan fosfat berfungsi sebagai nutrien untuk melangsungkan fotosintesis. Selain masukan dari daratan, nitrat dan fosfat di padang lamun juga berasal dari hasil dekomposisi tumbuhan lamun yang telah mati. Oleh karena itu perlu adanya penelitian mengenai  kandungan nitrat dan fosfat di perairan pada kerapatan lamun yang berbeda. Tujuan penelitian ini adalah mengetahui korelasi dan kandungan nitrat dan fosfat dalam air dan sedimen di padang lamun perairan Teluk Awur, Jepara pada kerapatan lamun yang berbeda. Penelitian ini menggunakan metode deskriptif eksploratif dan korelasional, sedangkan metode penentuan lokasi menggunakan metode purposive sampling. Materi yang digunakan dalam penelitian ini adalah sampel air, sedimen, dan kerapatan lamun. Penelitian dilaksanakan pada bulan Oktober – November 2015. Analisis sampel penelitian dilakukan di Laboratorium Teknik Lingkungan Fakultas Teknik, Universitas Diponegoro. Hasil penelitian yang diperoleh adalah kandungan nitrat dalam air 2,487-2,711 mg/L, nitrat dalam sedimen sebesar 6,393-7,288 mg/L, fosfat dalam air sebesar 0,008-0,012 mg/L, dan fosfat dalam sedimen sebesar 3,403-4,171 mg/L. Perairan Teluk Awur, Jepara tergolong kurang subur. Analisis korelasi kandungan nitrat dalam air, nitrat dalam sedimen, fosfat dalam air dan fosfat dalam sedimen dengan kerapatan lamun memiliki nilai korelasi (r) sebesar -0,526; 0,242; 0,110 dan 0,101. Hubungan kandungan nitrat dan fosfat dalam air, dan sedimen  menunjukkan hubungan yang rendah. ABSTRACT : Seagrass is the only flower plant in marine environment. Nutrient availability in environment affects the growth of sea grass. Nitrate and phosphate have a role as the nutrient supplier/source for photosynthesis. Besides input from the land, nitrate and phosphate in seagrass field also come from the result of decomposition of dead seagrass. Therefore, a research about nitrate and phosphate content in water at different seagrass density should be conducted.The purpose of this research was to known correlation and  content of nitrate and phosphate in water and sediment of seagrass bed in Teluk Awur waters, Jepara at different seagrass density. This research used a descriptive explorative method and correlational method, while the method for location decision was using purposive sampling method. The materials used in this research were water, sediment, and seagrass density. This research was conducted in October until November 2015. The sample analysis  for this research was done in laboratory of environment technique of Technique Faculty, Diponegoro University. The results obtained from this research showed that nitrate content in water was 2.487-2.711 mg/L, nitrate content in sediment was 6.393-7.288 mg/L, phosphate content in water was 0.008-0.012 mg/L, and phosphate content in sediment was 3.403-4.171 mg/L. The seagrass abundance of Teluk Awur waters, Jepara was categorized to low abundance rate. The analysis of correlation among nitrate and phosphate in water and sediment towards seagrass density pointed correlation value (r) as follows: -0.526; 0.242; 0.110 and 0.101. The relationship between nitrate and phosphate in water and in sediment with the density was estimated  weak relations.
Rumput Laut Gracilaria sp. Sebagai Bioremedian Dalam Sistem Budidaya Polikultur Dengan Kepiting Bakau (Scylla serrata) Wandira, Ardiani Widya; Sunaryo, Sunaryo; Sedjati, Sri
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (680.742 KB) | DOI: 10.14710/jmr.v7i2.25900

Abstract

ABSTRAK : Kendala  dalam  budidaya  adalah menurunnya kualitas hasil produksi dan penurunan kualitas air. Dibutuhkan biofilter berupa rumput laut Gracilaria sp. untuk mengurangi keadaan tersebut. Tujuan penelitian adalah untuk mengetahui pengaruh perbedaan kepadatan rumput laut sebagai bioremedian dalam sistem budidaya polikultur dengan Kepiting Bakau terhadap kandungan amonia (NH3), nitrit (NO2-), nitrat (NO3-), laju pertumbuhan kepiting bakau, dan rumput laut Gracillaria sp.  Penelitian di dilaksanakan pada bulan Desember 2015 - Januari 2016 di Laboratorium Basah Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro Semarang.Penelitian Menggunakan Rancangan Acak Lengkap (RAL) dengan 4 perlakuan 3 kali pengulangan.Perbedaan pemberian kepadatan rumput laut Gracilaria sp. sebagai bioremedian pada sistem budidaya polikultur Kepiting Bakau berpengaruh terhadap kandungan amonia (NH3), nitrit (NO2-), nitrat (NO3-) dan. Kandungan amonia (NH3) tertinggi pada perlakuan A (0 g rumput laut) berkisar 0,1 mg/L - 0,47 mg/L dan terendah pada perlakuan D (300 g rumput laut) berkisar 0,04 mg/L-0,37 mg/L.  Kandungan nitrit (NO2-) tertinggi pada perlakuan A, berkisar 0,24 mg/L-0,4 mg/L, dan terendah perlakuan D sebesar 0,13 mg/L-0,26 mg/L. Kandungan nitrat (NO3-) tertinggi pada perlakuan A, berkisar antara 0,6 mg/L -4,59 mg/L, dan terendah perlakuan D sebesar 0,16 mg/L-2,87 mg/L. Laju pertumbuhan spesifik bobot harian kepiting bakau pada perlakuan A 0,27 % per hari, B 0,31 % per hari, C 0,44 % per hari dan D 0,56 % per hari dan laju pertumbuhan spesifik berat harian rumput laut Gracilaria sp.  pada perlakuan A 0 % (kontrol / tidak diberi rumput laut), B 0,49 % per hari,  C 0,3 % per hari dan D 0,21 % per hari. Hal ini perbedaan pemberian kepadatan rumput laut Gracilaria sp. sebagai bioremedian pada sistem budidaya polikultur kepiting bakau berpengaruh terhadap laju pertumbuhan spesifik harian Kepiting Bakau dan laju pertumbuhan spesifik harian rumput laut Gracilaria sp. ABSTRACT : One of the obstacles faced in aquaculture is decreasing quality of production as a result of water qualities deoterition. To reduce and overcome this situation is addition of biofilter. Biofilter used is seaweed Gracilaria sp. The study was aimed to know the influence density of difference seaweed as bioremedian in polyculture system with mud crab to ammonia (NH3), nitrite (NO2-), nitrate (NO3-), and the specific growth rate of mud crab and Gracilaria sp. This research was conducted in December 2015 to January 2016 at wet laboratory of the Department of Marine Fisheries and Marine Sciences Faculty of the University of Diponegoro in Semarang. This study used completely randomized designed (RAL) with 4 treatments and 3 replications.The effect give difference of density Gracilaria sp. as bioremedian on crab mud polyculture systems was affect the content of ammonia (NH3), nitrite (NO2-), nitrate (NO3-). The highest content of ammonia (NH3) in the treatment of A (0 g seaweed) ranged between 0,1 mg/L to 0,47 mg/L and the lowest content of ammonia (NH3)  in treatment D (300 g seaweed) ranged between 0,04 mg/L to 0,37 mg/L. The highest content of nitrite (NO2-)   in the treatment of A, ranging from 0,24 mg/L to 0,4 mg/L, and the lowest in treatment D with 0,13 mg/L to 0,26 mg/L. The highest content of nitrate (NO3-) in the treatment of A with 0,6 mg/L to 4,59 mg/L, and the lowest in treatment D with a content of 0,16 mg/L to 2,87 mg/L. Specific growth rate mud crab in treatment A 0,27 % / day, B 0,31 % / day, C 0,44 % / day dan D 0,56 % / day and specific growth rate of the seaweed Gracilaria sp on treatment A 0% (control / not given seaweed), B 0,49 % / day,  C 0,3 % / day dan D 0,21 % / day. The difference of Gracilaria sp.density as bioremedian on mud crab polyculture systems affected the specific growth rate of mud crab and specific growth rate Gracilaria sp.
Analisis Kualitas Alginat Rumput Laut (Padina sp.) Menggunakan Metode Ekstraksi Jalur Kalsium Pasaribu, Adam Sojuangon; Sedjati, Sri; Pramesti, Rini
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (854.997 KB) | DOI: 10.14710/jmr.v9i1.25502

Abstract

ABSTRAK: Padina sp. merupakan spesies rumput laut cokelat (Phaeophyta) penghasil alginat, namun kualitas alginat yang dihasilkan tergolong rendah dibandingkan alginofit lainnya. Metode ekstraksi jalur kalsium diduga dapat meningkatkan kualitas alginat sehingga penelitian ini perlu dilakukan. Tujuan penelitian ini untuk mengkaji apakah ekstraksi jalur kalsium dapat meningkatkan mutu alginat yang dihasilkan dari rumput laut Padina. Ekstraksi dilakukan dengan metode jalur kalsium konvensional dan jalur kalsium MAE (Microvawe Assisted Extraction). Metode penelitian yang digunakan adalah eksperimental laboratoris dengan 1 perlakuan (kosentrasi CaCl2) dan 3 taraf konsentrasi yaitu 0,5 M 1,0 M dan 1,5 M. Parameter kualitas yang dianalisis meliputi rendemen, kadar air, Kadar abu, viskositas, pH dan FTIR. Hasil uji two way ANOVA menunjukan terdapat signifikansi rendemen dengan nilai 0,007. Metode jalur kalsium MAE dengan konsentrasi 1,0 M CaCl2 menghasilkan kualitas terbaik dengan nilai rendemen (26,83%), kadar air (10,67%), kadar abu (21,83%), viskositas (11,42 cPs)  dan pH (6,77). Hasil analisis FTIR menunjukan ke-2 metode ekstraksi menghasilkan natrium alginat dengan adanya sidik jari guluronat dan manuronat pada bilangan gelombang 930-890 cm-1 dan 870-820 cm-1. ABSTRACT: Padina sp. is a species of brown seaweed (Phaephyta) producing alginates, but the quality of alginates produced is relatively low compared to other alginophytes. The calcium pathway extraction method is thought to improve the quality of alginates thus the reason of the research. This research aims to examine whether the calcium pathway extraction improves the quality of alginates produced from Padina. Seaweed extraction was carried out using conventional calcium pathways and MAE (Microwave Assisted Extraction) calcium pathways. The research method used was laboratory experimental with 1 treatment (CaCl2 concentration) and 3 concentration levels : 0.5 M, 1.0 M, 1.5 M. Quality parameters analyzed includes yield, moisture content, ash contetnt, viscosity, pH and FTIR. The two way ANOVA test results showed that there was a significance of yield value of 0.007. The MAE calcium pathway method with a concentration of 1.0 M CaCl2 produces the best quality with a yield value (26.83%), water content (10.67%), ash content (21.83%), viscosity (11.42 cPs) and pH (6.77). FTIR analysis results show that the two extraction methods produces sodium alginate in the presence of guluronate and manuronic fingerprints at wave numbers 930-890 cm-1 and 870-820 cm-1.
Pengaruh Penambahan Pupuk Padat dan Cair terhadap Pertumbuhan, Jumlah Klorofil dan Kadar Protein Caulerpa racemosa, J.Agardh, 1873 (Ulvophyceae : Caulerpaceae) Pradhika, Vicky Dimas; Suryono, Suryono; Sedjati, Sri
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (452.447 KB) | DOI: 10.14710/jmr.v8i3.25269

Abstract

Caulerpa racemosa merupakan salah satu jenis rumput laut hijau yang dapat hidup di daerah pasang surutmaupun daerah yang tenang/bebas dari pasang surut. Setiap tahun permintaan C. racemosa di Jepara terus meningkat. Usaha pengembangan budidaya C. racemosa perlu dilakukan supaya penyediaan kebutuhan pasar tidak bergantung pada alam. Upaya peningkatan produksi budidaya dapat dilakukan dengan penambahan nutrien di tambak budidaya. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian pupuk padat dan cair terhadap pertumbuhan (berat basah, laju pertumbuhan harian) dan kandungan klorofil serta kadar protein rumput laut C. racemosa. Perlakuan yang pada penelitian ini adalahpenambahan pupuk :A (pupuk padat), B (pupuk cair), C (pupuk padat dan cair). Pencapaian berat rata rata rumput laut sebagai berikut: Kontrol= 39,5 ± 6,36 gram; A= 11,5 ± 2,12 gram; B= 18,5 ± 10,6 gram; D= 52,6± 14,19 gram. Laju pertumbuhan spesifik C. racemosa adalah: A= 1,2 ± 0,37%; B= -1,64 ± 0,51%; C= -0,53 ± 0,89%; C= 1,7 ± 0,63%. Kandungan klorofil a C. racemosa pada minggu 6 yaitu: Kontrol= 0,022mg/gram; A=0,015 mg/gram; B= 0,017 mg/gram; C= 0,080 mg/gram. Kandungan klorofil b C. racemosa pada minggu ke 6 yaitu: A= 0,016 mg/gram; B= 0,018 mg/gram; C= 0,013 mg/gram; D=0,026. Kandungan protein sebelum pemberian perlakuan adalah 0,60 % sedangkan setelah diberiperlakuan yaitu: Kontrol= 0,70% ± 0,06; A= 0,75% ± 0,11; B= 0,60% ± 0,10; C= 0,73% ± 0,08. Hasil penelitian ini menunjukkan bahwa pemberian pupuk padat dan cair berpengaruh nyata pada berat basah dan laju pertumbuhan spesifik C. racemosa (p < 0,01) sedangkan pemberian pupuk tidak bepengaruh nyata pada kandungan klorofil dan kadar protein (p > 0,05).  Caulerpa racemosa is a type of green algae that can live’s in tidal areas and calm / free from tides. Every year the demand for C. racemosa in Jepara is continues to increase. Cultivation of C. racemosa need to be done so the market suply is not dependent only on nature. Efforts to increase culture production can be done by adding nutrients to aquaculture ponds. This study aims to determine the effect of solid and liquid fertilizer on growth (wet weight, daily growth rate), chlorophyll content and protein content of C. racemosa seaweed. Treathments of this study is fertilize additon: A (solid fertilizer), B (liquid fertilizer), C (solid and liquid fertilizer). The average weight of seaweed for 42 days is as follows: Control = 39.5 ± 6.36 grams; A = 11.5 ± 2.12 grams; B = 18.5 ± 10.6 grams; C = 52.6 ± 14.19 grams. Specific growth rates of C. racemosa produced for 42 days is: Control = 1.2 ± 0.37%; A = -1.64 ± 0.51%; B = -0.53 ± 0.89%; C = 1.7 ± 0.63%. C. racemosa’s Chlorophyll a content at week 6 is: Control = 0.022 mg/gram; A = 0.015 mg/gram; B = 0.017 mg/gram; C = 0.080 mg/gram. C. racemosa’s Chlorophyll b content at week 6 is: Control = 0.016 mg/gram; A = 0.018 mg/gram; B = 0.013 mg/gram; C = 0.026 mg/gram. Protein content before administration of treatment is 0.60% while after treatment, is: Control = 0.70% ± 0.06; A = 0.75% ± 0.11; B = 0.60% ± 0.10; C = 0.73% ± 0.08. The results of this study showed, the addition of solid and liquid fertilizers had a significant effect on wet weight and specific growth rate of C. racemosa (p <0.01) while fertilizer application did not significantly affect chlorophyll content and protein content (p> 0.05).
Co-Authors Adam Sojuangon Pasaribu Adella, Alisa Sukma Adha Susanto Adi Santosa Adi Santoso Agus Trianto Ali Ridlo Ambariyanto , Ambariyanto Ambariyanto Amtoni Caesario Nainggolan Annisa Afifah Nugroho Ardiani Widya Wandira Arif Maa’ruf Al Ayyub Arvianto Wibowo Aziz Rifai Bahry, Muhammad Syaifudien Bambang Yulianto Bolu, Wa Ode Rima Alam Sari Budhy Wiyarsih Chika Velita Anindya Yulian Deska Dwi Iriana Dewi Meynita, Dewi Dhimas Firmansyaf Dinda Ayuniar Zanjabila Dwi Haryo Ismunarti Eka Mulya Eksa Novritasari Elis Indrayanti Endang Supriyantini Ervia Yudiati Faith Dibri Kimberly Fransisca Ria Pramastuti Gita Wismayanti Hadi Endrawati Haeruddin Haeruddin Hafida Salma Ighwerb, Mostafa Imhmed Ikhlasul Amal Irene Ulsadriatny Iriana, Deska Dwi Jamaludin Jamaludin Khoirunnisah Riswanti Kirana Fatika Brilianti Lilik Maslukah Linggar Dirgantara Prasetyo M. Hafizulhaq Mada Triandala Sibero Mahadika Fanindhita Sany Maria Fransiska Limbong Max Rudolf Muskananfola McCauley, Erin Muhammad S. Bahry Muhammad Syaifudien Bahry Nada Kristiani Ginting Nirwani Soenardjo Nur Islamiah Sulastri Nuril Azhar Ocky Karna Radjasa Ocky Karna Radjasa Ocky Karna Radjasa Oetari Kusuma Putri Pasaribu, Adam Sojuangon Pradhika, Vicky Dimas Rabia Alghazeer Rachmat Afriyanto Raden Ario Rani Agustian Rizkina Ria Azizah Tri Nuraini Rima Rosema Rini Pramesti Riska Novianti Putri Risnita Tri Utami Rizky Rifatma Jezzi Rizqi Umi Arifah Sakti Imam Muchlisin Saniyatul Ulya Savitri, Nadiah Humairoh Mufidah Septhy Kusuma Radjasa Sri Redjeki Sri Yulina Wulandari Sulistiana, Zalsabila Sunaryo Sunaryo Sunaryo Sunaryo Suryono Suryono Vicky Dimas Pradhika Victoria Ratna Widiyanti Victorina Yulina Santi Wandira, Ardiani Widya Widiyanti, Victoria Ratna Wilis Ari Setyati Wismayanti, Gita Yusup Bayu Permadi Yusup Bayu Permadi Zidny Nurfadhli