Komposisi Isi Lambung Ikan Kembung Lelaki (Rastrelliger Kanagurta) Di Rembang

Perairan laut di kabupaten Rembang mempunyai kekayaan sumberdaya jenis ikan dengan hasil tangkapan yang dominan dan bernilai ekonomis tinggi. Penelitian ini didasarkan pada hasil tangkap Ikan Kembung yang di daratkan di TPI oleh nelayan yang melakukan penangkapannya di sekitar perairan Rembang. Penelitian ini bertujuan untuk mengetahui komposisi isi lambung Ikan Kembung Lelaki (Rastrelliger kanagurta) yang terdapat di TPI Tasik Agung Rembang, melalui hubungan panjang berat, analisis makanan dan identifikasi jenis makanannya. Penelitian ini dilakukan dengan metode penelitian deskriptif, dimana pengambilan sampling berdasarkan metode pertimbangan (purposive sampling method),dan pengambilan data dengan menggunakan sample survey method. Penelitian dilaksanakan bulan April – Mei 2013 di TPI Tasik Agung Rembang. Materi yang digunakan adalah 83 sampel ikan kembung jantan. Sampling Ikan Kembung Lelaki (Rastrelliger kanagurta) dilakukan sebanyak 4 kali yaitu tanggal 13 April, 27 April, 11 Mei dan 25 Mei 2013. Analisis data berupa analisis hubungan panjang dan berat,analisis makanan dan identifikasi jenis makanan. Hasil penelitian menunjukkan pertumbuhan ikan kembung pada bulan April bersifat allometrik negatif yang memiliki nilai slope (b) pada sampling I sebesar 2,966 dan sampling II sebesar 2,985, dan pada bulan Mei bersifat allometrik positif yang memiliki nilai slope (b) sebesar 3,251 dan sampling IV sebesar 3,35. Jenis makanan yang paling banyak ditemukan jenis Paracalanus yaitu 70,85%. Bedasarkan penelitian dapat disimpulkan bahwa Ikan Kembung Lelaki (Rastrelliger kanagurta) yang didaratkan di pengepul ikan daerah Rembang merupakan ikan omnivora yang memanfaatkan fitoplankton, zooplankton, sebagai sumber makanan

Pengaruh Pemberian Tetraselmis Chuii Dan Skeletonema Costatum Dengan Dosis Yang Berbeda Terhadap Profil Asam Lemak Tidak Jenuh Pada Kerang TOTOK Polymesoda Erosa

The study was conducted to determine the effect of various combinations of natural feed T. chuii and S. costatum to the appearance of unsaturated fatty acids Totok clams P. erosa. Implications of the results of this study can be used as the basis in effort Totok clams seed supply in the cultivation of shellfish. Species used in this study Totok sized clams 4-5 cm obtained from the waters around the island Gombol Segara Anakan, Cilacap. The vessel used is a aquarium size of 30 x 30 x 30 cm with 2 individuals/ aquarium with 2 L volumes of media. The method used is an experimental laboratory with a completely randomized design, two factors, there treatments and there replication. Influence of mixture T1 : T. chuii 36 x 104 sel / mL and S. costatum 9 x 104 sel / mL; T2 : T. chuii 27 x 104 sel / mL and S. costatum 18 x 104 sel / mL; T3 : T. chuii 18 x 104 sel / mL and S. costatum 27 x 104 sel / mL. The feed is given once for there months. Measurement of unsaturated fatty acid content using GC-MS method. The results showed that feeding a mixture of T. chuii and S. costatum and maintenance time of real influence (P <0.05) on levels of unsaturated fatty acids Totok P.erosa shells. Formulation of feed mixture with chuii 27 x 104 sel / mL and S. costatum 18 x 104 sel / mL to give better results than the other feed

Pengaruh Perebusan Dengan Abu Sekam Dan Waktu Perendaman Air Terhadap Kadar Hcn Pada Buah Mangove Avicennia Marina

The potential of mangove fruit as a food source has not been known yet. Mangove is a potential material to be used as a food substitute, one of which is the process of making flour. One part of the Mangove is used for the manufacture of flour is the fruit of mangove A.marina. Toxins such as HCN in fruit may cause constraint in food processing, so it needs to be removed. The ways that can be done by immersion and boiling them with rice husk ash. Rice husk ash is material that is expected to absorb HCN as toxin in fruit. This research used Completely Randomized Design (CRD) factorial pattern consisting of two factors treatments with three replicates by 6 hours immersion time (4, 8 and 12 replications) and ash contents (5, 10, 15% W). Data were analyzed by two-way ANOVA using SPSS. The results showed that treatment with several concentrations of ash boiling and long water immersion to give a significant influence on levels of HCN A.marina mangove fruit flour. Treatment with boiling 15% ash content and 6 hours of water immersion to 12 replications provides the best results of the HCN content of fruit and flour mangove mangove A.marin

Pengaruh Konsentrasi Abu Gosok Dan Waktu Perendaman Air Terhadap Kandungan Nutrisi Tepung Buah Mangrove Avicenia Marina

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

Kandungan Kolesterol Kepiting Bakau (Scylla Serrata) Jantan Dan Betina Pada Lokasi Yang Berbeda

Mud crab (Scylla serrata) have potency commercial market in this country and the other country. That thing because mud crab (Scylla serrata) flesh has a delicious taste and high nutrition. People haven't knowed about cholesterol content in both male or female mud crab (Scylla serrata), whereas the knowledge about cholesterol content is important to consider nutrition intake to keep in good health. This research aim to determine cholesterol content in Scylla serrata by observing male and female crab in Pemalang and Demak. This research used descriptive method and sampling used purposive random sampling method. Determination of sampling position used purposive sampling method. This research has done in October 30th – November 25th 2011. This research used 30 male and 30 female with mean body weigh 60 - 100 g. Analysis of cholesterol content used method by Lieberman–Burchad. Result from this research indicates that S. serrata from Pemalang has cholesterol content more large than S. serrata from Demak, while the male crab from both place has higher cholesterol content than female crab (66,67 mg/100g and 61,67 mg/100g in male crab, and 64,67 mg/100g and 58,33 mg/100g in female crab)

Pengaruh Pemberian Tetraselmis Chuii Dan Skeletonema Costatum Terhadap Kandungan Epa Dan Dha Pada Tingkat Kematangan Gonad Kerang Totok Polymesoda Erosa

The research was conducted to determine the effect of natural feed T. chuii and S. costatum to content of EPA and DHA on the level of maturity of the gonads. Species used in this research Totok clams sized 4-5 cm. Obtained from the waters surrounding Gombol island, Segara Anakan Cilacap. The method used is an experimental laboratory with a split plot draft random, 2 factorials and 3 treatments. Influence of mixture T1 : T. chuii 36 x 104 sel / mL and S. costatum 9 x 104 sel / mL; T2 : T. chuii 27 x 104 sel / mL and S. costatum 18 x 104 sel / mL; T3 : T. chuii 18 x 104 sel / mL and S. costatum 27 x 104 sel / mL. The feed is given once a day for there months. Measurement of EPA and DHA content using GC-MS method. The results of this research showed that treatment of feeding a mixture of T. chuii and S. costatum give real effect to the content of EPA and DHA on Totok clams. The development of the level of maturity of the gonads is still in the development Totok clams of stadia 1. Treatment of mixed feed formulations (T. chuii 27 x 104 cells/ml and S. Costatum 18 x 104 cells/ml) give better the growth Totok clams, a heavy wetness soft tissue Totok clams, feed consumption, Survival Rate of Totok clams, the percentage content of EPA and DHA and the level of maturity of the gonads in Totok clams P. erosa

Penambahan Berat, Panjang, Dan Lebar Dari Ukuran Benih Yang Berbeda Pada Budidaya Kepiting Soka Di Desa Mojo Kabupaten Pemalang

Soka crabs is also called soft-shelled crabs. Soft shell in crab was not because of different type of crab, but it is due to the crab just molted. Events of molting is marked with the release of the old shells and formed newly shells. This molting process produces an increase in body size (Growth). The experiment was conducted in September-October 2011. The research was conducted at Soka crab aquaculture in Mojo village, Ulujami Sub-District, Pemalang District. The method used in this study was field research, by using design random complete with 4 treatment 10 times deut.. Test animals used were the mud crab (Scylla serrata), a total of 40 crabs with initial weight size of 70-110 grams. Test animals were grouped into 4 groups of of weight, which were A (of weight 70-80 grams), B (80.1 to 90 grams), C (90.1 to 100 g) and D (100.1 to 110 grams). Each group of size consisted of 10 crabs. Test containers used were plastic box with a density of 1 individual / box. The results showed that the difference in weight grouping gave results that were not significantly different (p> 0.05) for weight, length and width after molting. Differences in weight grouping also gave different FCR values that were not significantly different (p> 0,05). This was probably due to the grouping of weight used was still relatively narrow. Mangrove crab survival rate level for all groups of size showed an average value of 100% and water quality was quite good and decent for soft-shelled crabs aquaculture

Identifikasi Pigmen Karotenoid Pada Bakteri Simbion Rumput Laut Kappahycus Alvarezii

Carotenoid is one of the most important pigments that have important roles for human health. Carotenoids are believed to improve the better immune responses, anticancer, antioxidant, provitamin A and are also used in the treatment of disease that are sensitive to light. Carotenoids are yellow pigments, orange to red pigments and usually found in vegetables and fruits, and are also found in animals, humans, fungi and bacteria. The aims of study were to analyze carotenoid pigments from bacterial symbionts from seaweed Kappaphycus alvarezii and to identify bacterial symbionts that produce carotenoid pigments. Pigment analysis was performed by a UV-VIS spectrophotometer and High Performance Liquid Chromatography (HPLC). Bacterial identification was performed based on biochemical tests. These results showed that from 12 bacterial symbionts isolated, there were 2 isolates that positively synthesize carotenoids pigments, ECJ K and ECJ OR bacteria. ECJ K bacterium contained of Violaxanthin and α-carotene pigments. While ECJ OR bacterium contained of Diadinoxanthin, Neoxanthin, γ-carotene, β-carotene and α-carotene pigments. Bacterial identification showed that ECJ K bacterium was Brevibacterium maris and ECJ OR bacterium was Micrococcus varians. This result showed that bacterial symbionts of seaweed Kappaphycus alvarezii contained various pigments including in carotenoid pigments

APLIKASI PEWARNAAN BAHAN ALAM MANGROVE UNTUK BAHAN BATIK SEBAGAI DIVERSIFIKASI USAHA DI DESA BINAAN KABUPATEN SEMARANG

ABSTRAK  Masyarakat desa Gemawang, Kecamatan Jambu di kabupaten Semarang telah memulai usaha kecil menengah dalam porduksi batik dengan pewarna bahan alam indigo. Namun permasalahan yang muncul adalah dominasi warna yang ditemukan hanya monoton pada warna hijau dan biru. Dari permasalahan tersebut, Tim Pengabdian Ilmu Kelautan melakukan uji lanjutan modifikasi warna bahan alam untuk mengaplikasikan bahan alam dari darat dan dari laut yang jarang ditemukan dalam pemasaran pewarnaan bahan alam.  Berdasarkan hal tersebut, maka tujuan penelitian adalah untuk mendapatkan warna alam yang menarik dan bervariasi dari tambahan warna tanaman mangrove dalam peningkatan kreatifitas sebagai upaya perluasan pasar batik di desa Gemawang, Kecamatan jambu Kabupaten Semarang. Materi penelitian yang digunakan adalah daun dan batang tanaman mangrove yang di ekstraksi dan selanjutnya hasil ekstraksi dengan menggunakan fiksasi tawas, kapur dan tunjung dicelupkan pada kain untuk mendapatkan warna yang kuat dan tidak luntur. Hasil penelitian memperlihatkan bahwa pewarnaan dari daun dan batang pada 6 jenis tanaman mangrove yaitu: Sorenasia alba, Rizophora sp, Avecenia sp, Ceripos decandra, Lumicera sp memperlihatkan warna yang hampir sama, yakni dari warna coklat muda hingga coklat tua gelap. Hasil pewarnaan alam mangrove memperlihatkan variasi warna terang, yang berbeda,  tidak luntur terjadi pada batang dan daun jenis Agriceros sp serta batang dan daun jenis Lumicera sp.  Warna alam dari daun mangrove jenis Agriceros sp dengan fiksasi gabungan kapur dan tunjung tampak warna lebih kuat, dan tidak gelap serta tidak luntur

Kandungan Logam Berat Timbal (Pb) Pada Air, Sedimen, Dan Kerang Hijau (Perna Viridis) Di Perairan Tanjung Emas Semarang

Penelitian ini bertujuan untuk menganalisis kandungan dan tingkat pencemaran logam berat Pb pada air, sedimen, dan kerang hijau (Perna viridis) di perairan Tanjung Emas Semarang. Penelitian ini dilaksanakan pada tanggal 7 November dan 7 Desember 2013 dengan metode penelitian deskriptif. Sampel air, sedimen dan kerang hijau dianalisis di Laboratorium menggunakan alat AAS (Atomic Absorption Spectrophotometry). Hasil penelitian kandungan logam berat Pb di setiap titik stasiun menunjukkan pola akumulasi yang sama pada air. Kandungan logam berat Pb pada sedimen dan kerang hijau (Perna viridis) menunjukkan nilai yang bervariasi, terkait dengan sifat dari logam berat yang cenderung mengendap dan terakumulasi dalam organisme. Meskipun demikian variasi faktor lingkungan seperti suhu, salinitas, pH, kecepatan arus dan jenis sedimen juga memberikan kontribusi yang cukup penting. Kandungan Logam berat Pb pada Kerang Hijau (Perna viridis) telah melampaui batas yang diperbolehka