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Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology

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Published by Universitas Diponegoro

ISSN : 18584748 EISSN : 25490885 DOI : -

Core Subject : Education,

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SAINTEK PERIKANAN (p-ISSN: 1858-4748 dan e-ISSN: 2549-0885) adalah jurnal ilmiah perikanan yang diterbitkan oleh Jurusan Perikanan Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro. Jurnal ini diterbitkan 2 (dua) kali setahun (Februari dan Agustus).

Arjuna Subject : -

Articles 491 Documents

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The Role of Fisheries Sector Before and After the Implementation of Regional Outonomy in Central Java Adhyaksa Dault; Abdul Kohar Mudzakir; Agus Suherman
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 3, No 2 (2008): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

The objectives of this research is to find out the character of fisheries sector, before and after the act of regional in Central Java otonom. A discriptive method was apply by using secondary data from Central Java Input Output Table Data, Domestic Transaction Based on Producer Price 19 Sector year 1993, 2000, 2004 and 2007. The results showed that the Regional Autonom Act since 1 January 2000 in Central Java influenced the monetary, and others fisheries sectors, such as on the supply and demand, output, added value and trading structure. Those impacts were shown by the decreasing of trade structure after the regional outonom act Keywords : Regional otonomy, input output table, fisheries, Central Java

KOMPOSISI PENYUSUN TERUMBU KARANG TEPI (FRINGING REEF) DI PULAU MANDANGIN KABUPATEN SAMPANG, MADURA The Composition of Fringing Reef Formation in Pulau Mandangin, Sampang Province, Madura Guntur Guntur; Samsul Arifin; Oktiyas Muzaky Luthfi
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 11, No 2 (2016): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Terumbu karang tepi di Pulau Mandangin tersusun substrat biotik dan abiotik dengan kedalaman tidak lebih dari 40 m. Pulau Mandangin adalah pulau kecil yang memiliki komposisi substrat dasar seperti terumbu karang dan perairannya yaitu zona leeward dan zona windward. Zona leeward adalah sisi yang membelakangi arah datangnya angin, sedangkan zona windward adalah sisi yang menghadap arah datangnya angin. Tujuan dari penelitian ini adalah untuk mengetahui komposisi penyusun terumbu karang tepi (fringing reef) dan mengetahui perbedaan komposisi penyusun terumbu karang tepi (fringing reef) antara zona leeward dan zona windward di Pulau Mandangin. Metode yang digunakan adalah Line Intercept Transect (LIT) secara vertikal, LIT dimulai dari surut terendah sampai daerah reef slope dan dilakukan pencatatan semua jenis substrat yang dibawah garis transek. Hasil penelitian menunjukkan zona fringing reef yang mengelilingi Pulau Mandangin tersusun atas substrat rubble, sand, alga, rock, dead coral, dead coral with algae, sponge, coral massive dan coral submassive. Zona leeward lebih bervariasi dari zona windward dalam susunan fringing reef. Hal ini karena angin yang terjadi di zona windward lebih besar dari zona leeward, sehingga substrat di zona windward hanya rubble dan sand. Fringing reef in Mandangin Island comprises of biotic and abiotic substrates in depth not more than 40 m. Mandangin Island is a small island with base substrate composition mostly involving coral reef. The waters include leeward and windward zones. Leeward zone is paralleling with wind incoming direction, whereas windward zone is facing on wind incoming direction. The objective of research is to understand the composition that constitutes fringing reef and to recognize different constitutive composition of fringing reef at leeward zone and windward zone in Mandangin Island. Method of research is Line Intercept Transect (LIT) that is applied vertically. LIT starts from the lowest ebb toward the reef slope zone, and it involves registering all substrate types below transect line. Result of research indicates that fringing zone surrounding Mandangin Island consists of various substrates such as rubble, sand, alga, rock, dead coral, dead coral with algae, sponge, coral massive and coral sub-massive. Leeward zone is more diversified in fringing reef composition than windward zone. It is evident because wind occurrence at windward zone is higher than at leeward zone, and thus, substrates at windward zone include only rubble and sand.

Quality Comparation of Smoking Catfish Using Pine Liquid Smoke With Different Concentrations Fronthea Swastawati; Sumardianto Sumardianto; Rina Indiarti
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 2, No 1 (2006): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Utilization of liquid smoke is considered as one fish smoking alternative methods that effect should be applied in Indonesia. Catfish (Arius thalasinus) is one of fish species which has good taste, delicious and good nutrition value. Fish is dipped in water containing liquid smoke with ratio of = 5% (A); 7, 5% (B); and 10% (C). the average of organoleptic value of the product were relatively high and there was no significant different between samples, water content of the product 55-59%, protein content 30-35%, fat content 4,95%-7,64% and ash content 3,38%-4,95%. Result for TPC showed that A = 15, 6.102 CFU/gr, B = 11.102 CFU/gr, and C = 6.102 CFU/gr. Based on ANOVA, it was obtained that there was significant different in bacterial content between samples (F observed (21, 19082) > F tables 0, 01 (18.00)). Phenol content showed significant different between samples where A = 0, 7068 mg/kg; B = 1, 20622 mg/kg; and C = 1, 51028 mg/kg. The result average of pH showed A = 6, 3; B = 6, 13; C = 6, 3, with pH of liquid smoke 2, 8 Key words: quality, smoke catfish, Liquid Smoke of Pine, concentration

AKTIVITAS ANTIBAKTERI EKSTRAK LAMUN (Cymodocea rotundata) TERHADAP BAKTERI Staphylococcus aureus DAN Escherichia coli (Antibacterial Activities of Seagrass Extracts (Cymodocea rotundata) Against Staphylococcus aureus and Escherichia coli) Septiani Septiani; Eko Nurcahya Dewi; Ima Wijayanti
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 13, No 1 (2017): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Cymodocea rotundata merupakan salah satu jenis lamun yang berpotensi sebagai antibakteri. Senyawa bioaktif yang bersifat sebagai antibakteri adalah fenol, flavonoid dan tanin. Tujuan penelitian ini adalah untuk mengetahui perbedaan lama inkubasi dan konsentrasi ekstrak lamun C. rotundata yang berbeda terhadap aktivitas antibakteri S. aureus dan E. Coli. Metode penelitian yang digunakan yaitu experimental laboratories dengan menggunakan rancangan dasar penelitian Rancangan Acak Lengkap (RAL) dengan pola faktorial, pola terbagi oleh faktor lama inkubasi bakteri (24 jam, 48 jam dan 72 jam) dan perbedaan konsentrasi ekstrak lamun (5%, 10% dan 15%). Data dianalisis menggunakan SIDIK RAGAM dan dilakukan analisis lanjut Beda Nyata Jujur (BNJ), apabila terdapat perbedaan pada perlakuan. Ekstrak lamun C. rotundata efektif sebagai antibakteri dengan kategori sedang yaitu zona hambat berkisar antara 5-10 mm. Konsentrasi optimum untuk menghambat S.aureus dan E.coli adalah 15% dengan lama inkubasi 48 jam dengan zona hambat yang dihasilkan masing-masing sebesar 6, 123 mm. Dan 5, 833 mm.Cymodocea rotundata is a type of seagrass that has a potential as an antibacterial. Bioactive compounds which act as such as antibacterial phenols, flavonoids and tannins. The purpose of this study was to determine the effect of different concentration and time of incubation of seagrass C.rotundata as antibacterial against S. aureus and E. coli. The method used was experimental laboratories using the basic design of the study completely randomized design (CRD) with factorial pattern (2 factor). The first factor were different concentration (5%, 10% and 15% ) and second factor were time of incubations (24 hours, 48 hours and 72 hours). Data were analyzed using ANOVA and conducted a further test Honestly Significant Difference (HSD), if treatment gave significant effect. C. rotundata extracts had antibacterial activity with medium category which inhibition zone ranges from 5-10 mm. The optimum concentration for inhibiting S. aureus and e. coli were 15% with incubation time of 48 hours resulting inhibition zone 6,123 mm and 5,833 respectively.

PENDUGAAN UMUR LARVA IKAN GERONG-GERONG (Hypoatherina sp.) YANG TERTANGKAP DI PERAIRAN PELAWANGAN TIMUR, SEGARA ANAKAN, CILACAP MELALUI STUDI OTOLITH Subiyanto Subiyanto; Boedi Hendrarto; Lusiana Rahmawati; Christian B.C.
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 4, No 2 (2009): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Pengamatan terhadap otolith larva ikan Hypoatherina sp. yang tertangkap di Pelawangan Timur Segara Anakan, Cilacap untuk menduga umur telah dilakukan dari bulan Juli – Oktober 2003. Pengambilan sampel larva ikan Hypoatherina sp. dilakukan setiap dua minggu sekali. dengan menggunakan plankton net berdiamter 60 cm dan mesh size 200 mikron. Larva yang paling banyak tertangkap berukuran panjang standart antara kelompok 4,1 – 6,0 mm sebanyak 40 % dan 6,1 – 8,0 sebanyak 28 %. Dari hasil pengamatan didapatkan bahwa larva ikan Hypoatherina sp. yang tertangkap di perairan Pelawangan Timur mempunyai jumlah lingkaran harian antara 4 - 19 dengan panjang standart 3,4 – 19,9 mm. Dari analisa regresi yang didapatkan adalah y = 0.8293x + 1.382 dengan R2 = 0,7024. Lingkaran harian pertama diduga terbentuk pada kisaran ukuran panjang standart 2,21 mm. Kata kunci : Pendugaan umur, Larva ikan Hypoatherina sp., Otolith

POTENSI RUMPUT LAUT Eucheuma cottonii SEBAGAI BAHAN BAKU PEMBUATAN KERTAS KANTONG KRAFT (Eucheuma cottonii Seaweed has a good Potential as Raw Material For Making Kraft Paper Bags) Ryan Ariefta; Eko Nurcahya Dewi; Romadhon Romadhon
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 14, No 2 (2019): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Ekstrak selulosa yang berasal dari rumput laut Eucheuma cottonii dapat dijadikan sebagai bahan substitusi pembuatan kantong kertas kraft yang biasanya dibuat dari pulp kayu. Tujuan dari penelitian ini adalah untuk mengetahui kualitas kantong kertas kertas kraft dari ekstrak rumput laut E. cottonii apabila dibandingan dengan kertas kraft berstandar SNI. Rumput laut E. cottonii yang digunakan berasal dari pantai Krakal, Gunung Kidul, Jogjakarta. Pembuatan kertas kraft dilakukan dengan ekstraksi selulosa dari E. cottonii diikuti dengan pemasakkan hingga hancur, pencetakan dan pengeringan sehingga berbentuk pulp lembaran. Rancangan percobaan yang digunakan yaitu Rancangan Acak Lengkap (RAL), dengan 1 faktor yaitu konsentrasi ekstrak rumput laut E. cottonii dengan tiga taraf yang berbeda yaitu 15%, 20%, dan 25%. Parameter pengujian yang dilakukan adalah ketahanan tarik, ketahanan sobek, daya regang dan derajat kecerahan (CIELAB). Data parametrik yang didapatkan diuji dengan sidik ragam (P<5%), dilanjutkan dengan uji Beda Nyata Jujur (BNJ) untuk melihat perlakuan yang berbeda. Hasil yang didapatkan pada uji ketahanan tarik pada konsentrasi 15%, 20% dan 25% berturut - turut, yaitu 1,80 ± 0,22 kN/m; 5,54 ± 0,42 kN/m dan 7,33 ± 1,28 kN/m, ketahanan sobek 737,62 ± 91,15 mN; 2260,00 ± 173.18 mN dan 2991,90 ± 525.04 mN, daya regang : 3,86 ± 1,78%; 7,24 ± 0,83% dan 7,08 ± 2,15%, untuk uji gramatur : 70 gram; 73,09 gram dan 75,75 gram. Hasil uji perbandingan kualitas kertas kraft paper bag dari subsitusi ekstrak selulosa 20% dan 25% telah memenuhi SNI, sedangkan pada konsentrasi 15% belum memenuhi SNI. Cellulose extract from Eucheuma cottonii seaweed can be used as a substitute for making kraft paper bags. Kraft paper are usually made from wood pulp. The purpose of this study was to determine the quality of kraft paper bags from seaweed extract E. cottonii when it compared to SNI kraft paper. The E. cottonii seaweed used comes from Krakal beach, Gunung Kidul, Jogjakarta. The kraft paper was first made by extracting cellulose from E. cottonii, it was cooked, crushed, printed , dried and finally it was formed to pulp sheet. The experimental design used was Completely Randomized Design (CRD), with 1 factor concentration of seaweed extract E. cottoni with three levels concentration 15%, 20%, and 25% respectively. The test parameters performed were tensile resistance, tear resistance , tensile strength and brightness (CIELAB). Data were analysed using Anova and tested continued Honestly Significant Different test (HSD). The results obtained in the tensile resistance test at a concentration of 15%, 20% and 25% were 1.80 ± 0.22 kN / m; 5.54 ± 0.42 kN / m and 7.33 ± 1.28 kN / m, in the tear resistance test were 737.62 ± 91.15 mN; 2260.00 ± 173.18 mN and 2991.90 ± 525.04 mN, the tensile strength were 3.86 ± 1.78%; 7.24 ± 0.83% and 7.08 ± 2.15%, for successive grammar tests: 70 grams; 73.09 grams and 75.75 grams. The comparison test results of the quality of paper bag kraft paper from cellulose extract 20% and 25% have met SNI, while at a concentration of 15% have not met SNI.

EVALUASI TINGKAT EKSPLOITASI SUMBERDAYA IKAN GULAMAH (Johnius sp) BERDASARKAN DATA TPI PPS CILACAP Wijaya Saputra, Suradi; Rudiyanti, Sit; Mahardhini, Atifah
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 4, No 1 (2008): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Sumberdaya ikan Gulamah (Johnius sp) merupakan salah satu jenis ikan demersal kecil yang banyak ditangkap oleh nelayan dengan menggunakan trammel net dan gill net, payang dan pukat pantai. Produksi ikan Gulamah di perairan Cilacap cenderung mengalami peningkatan sejak tahun 2003. Eksploitasi yang tidak terkendalikan dapat mengakibatkan menipisnya stok ikan. Penelitian ini bertujuan untuk mengetahui beberapa aspek biologi, tingkat pemanfaatan ikan Gulamah ditinjau dari ukuran rata-rata ikan yang tertangkap dan produksi surplus, serta musim penangkapannya. Metode yang digunakan adalah metode survei. Pengambilan sampel menggunakan metode simple random sampling dengan mencatat 10% dari populasi ikan Gulamah yang didaratkan di TPI PPSC Kabupaten Cilacap. Data primer diperoleh dari pengamatan jenis kelamin, mengukur panjang dan berat tubuh ikan Gulamah. Data sekunder yang dikumpulkan berupa data produksi ikan Gulamah, jumlah upaya penangkapan (trip) trammel net dan gill net, serta produksi bulanan ikan Gulamah selama kurun waktu 8 tahun terakhir (2000-2007). Hasil penelitian menunjukkan bahwa sifat pertumbuhan ikan Gulamah jantan adalah allometrik negatif , sedangkan ikan betina isometrik. Ukuran rata-rata tertangkap ikan Gulamah jantan sebesar 150 mm, ikan Gulamah betina sebesar 154 mm, lebih besar dari setengah nilai L∞-nya. Nisbah kelamin antara jantan dengan betina sebesar 1 : 1,86, masih terjamin terjadinya reproduksi alamiahnya. Tingkat eksploitasi ikan Gulamah masih rendah (10% dari MSY).

ANALISIS LAJU SEDIMENTASI PADA MANGROVE JENIS Rhizophora sp. DAN Avicennia sp. DI PERAIRAN BEDONO, DEMAK(Sedimentation Rate Analysis of Mangrove Rhizophora sp. and Avicennia sp. at Bedono, Demak) Nur Kharimah; Max Rudolf Muskananfola; Oktavianto Eko Jati
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 15, No 2 (2019): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Kawasan pesisir merupakan daerah yang rawan terkena erosi. Mangrove menjadi ekosistem pesisir yang berpengaruh terhadap laju sedimentasi. Keberadaan hutan mangrove dapat membantu menangani erosi di wilayah pesisir. Adanya bentuk perakaran mangrove yang bervariasi dapat memberikan pengaruh yang berbeda terhadap laju sedimentasi. Penelitian ini bertujuan untuk mengetahui perbandingan laju sedimentasi antara mangrove jenis Rhizophora sp. dengan Avicennia sp., serta untuk mengetahui pengaruh perbedaan bentuk akar mangrove terhadap laju sedimentasi. Penelitian dilakukan pada tanggal 7 April – 30 Juli 2018 di kawasan Hutan Mangrove Bedono, Demak. Kegiatan penelitian meliputi penentuan lokasi sampling melalui metode survei, pengukuran laju sedimentasi menggunakan sediment trap , pengukuran parameter fisika kimia dan analisis tekstur sedimen. Lokasi terdiri dari tiga stasiun, masing – masing stasiun terdapat enam titik. Tiga sediment trap diletakkan pada mangrove jenis Rhizophora sp. dan tiga lainnya pada mangrove jenis Avicennia sp. sehingga terdapat delapan belas titik. Laju sedimentasi Rhizophora sp. sebesar 13,01 mg//hari lebih rendah dari pada Avicennia sp. yaitu sebesar 16,78 mg/cm²/hari. Jenis substrat yang diperoleh berupa liat. Hasil uji ANOVA menunjukkan bahwa nilai p value = 0,015 . Kesimpulan yang diperoleh adalah bentuk akar tidak mempengaruhi jenis sedimen yang ditangkap dan jumlah hasil tangkapan sedimen Coastal areas were disturbed by abration. Mangrove influence the sedimentation rate and prevent abration coastal. The varied forms of mangrove root caused different effects with the sedimentation rate. The purpose of this research were to find out ratio and effect of the mangrove root differences of Rhizophora sp. and Avicennia sp. to sedimentation rate. The study was conducted in April 7th - July 30th, 2018 in Bedono. The methods of the research were sampling, measuring the sedimentation rate sediment trap, measuring temperature, pH, salinity, and current velocity, and analyzing sediment texture. There were 3 stations with its station had 6 points. Three sediment traps were placed on Rhizophora sp. and the others 3 are in the Avicennia sp. Sedimentation rate of Rhizophora sp. amounting to 13,01 mg / / day lower than Avicennia sp. that is equal to 16,78 mg / / day. ANOVA test showed that p value = 0,015. The type of substrate obtained is clay. The conclusion said that root shape does not affect the type of sediment obtained and amount of sediment catched.

Quality Analysis Satsuma Age of Threadfin Bream (Nemipterus sp) Processed Using Different Kind of Flours Pudyastuti Anggit N; Darmanto YS; Fronthea Swastawati
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 6, No 2 (2011): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Satsuma age is one kind of diversification product, originally characterized as a traditional food from Japan, that processed by surimi added with flour, vegetables, and spices, and then cooking by frying. The aim of this research were to evaluate the effect of different kind of flours used on gel strength and hedonic value and also to know the best kind of flour use in processing of satsuma age of threadfin bream. The experimental design that used is Randomized Block Design. Different treatments used was different kind of flour, namely tapioca flour , sagu flour, and garut flour. The result indicated that different kind of flour treatment gave very significant different (P<0.01) on gel strength and gave significant different (P<0.05) on value of hedonic with specificate on texture , but were not significant different on ( P>0.05) on appearance , odour , taste , and colour. The result support parameter to test bite of 7.94 for treatment tapioca flour; 7.98 for treatment sago flour; and 7.40 for treatment arrowroot flour. Folding test result of 4.30 for tapioca flour; 4.26 for sago flour ; and 3.66 for arrowroot flour. The moisture content of 40.40% for tapioca flour ; 41.91% for sago flour; and 40.89% for arrowroot flour. Protein content of 21.53% for tapioca flour ; 21.17% for sago flour; and 21.57% for arrowroot flour. Fat content of 7.97% for tapioca flour ; 7.49% for sago flour; and 7.43% for arrowroot flour. The ash content of 2.69% for tapioca flour; 2.66% for sago flour ; and 2.36% for arrowroot flour. Carbohidrate content of 27.93% for tapioca flour ; 27.10% for sago flour; and 27.27% for arrowroot flour. Satsuma age processed using sago flour to was most prever based on hedonic scale and has high gel strength. Key word : Satsuma Age, Tapioca Flour, Sago Flour, Arrowroot Flour, Gel Strength, Hedonic

PENGARUH BATING AGENTDARI RAGI TEMPE (Rhizopus oligosphorus) TERHADAP KUALITAS KULIT IKAN NILA (Oreochromis niloticus) SAMAK The Effect of Bating Agent from Ragi Tempe(Rhizopus oligosphorus) to the Quality of Nila (Oreochromis niloticus) Leather Arlina Hidayati; Putut Har Riyadi; Laras Rianingsih
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 11, No 1 (2015): JURNAL SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

ABSTRAK Isolat Rhizopus oligosphorus, mengandung enzim protease yang mudah diperoleh dalam bentuk ragi tempe dan terjangkau harganya sehingga dapat digunakan sebagai alternatif pengganti bating agent komersial yang harganya mahal serta tidak ramah lingkungan. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh Rhizopus oligosphorus sebagai bating agent terhadap kualitas kulit ikan Nila (Oreochromis niloticus) samak dan mencari konsentrasi dan lama bating terbaik dari isolat Rhizopus oligosphorus sebagai bating agent. Materi yang digunakan dalam penelitian ini adalah kulit ikan Nila (Oreochromis niloticus) dan isolat Rhizopus oligosphorus dari ragi tempe komersial merk RAPRIMA. Metode penelitian yang digunakan adalah eksperimental lapangan menggunakan Rancangan Acak Lengkap dengan Pola Faktorial yaitu faktor A (konsentrasi isolat Rhizopus oligosphorus: 0,5%; 1%; 1,5%; 2%; dan 2,5%) dan Faktor B (Lama bating : 30 menit, 60 menit dan 90 menit). Parameter yang di uji adalah kadar protein terlarut pada limbah bating, kadar krom, kadar abu, kekuatan tarik, kemuluran, kekuatan sobek, dan suhu kerut. Berdasarkan hasil penelitian diperoleh nilai kadar protein terlarut pada limbah bating antara 0,28 – 1,08%; kadar krom 2,19 – 2,43%; kadar abu 4,38% – 4,95%; kekuatan tarik 1647,43 – 2161,93 N/cm2; kemuluran 90,36 – 109,11%; kekuatan sobek 297,94 – 472,85 N/cm; dan suhu kerut 98,33 – 101 0C. Hasil penelitian menunjukkan bahwa faktor perbedaan konsentrasi berpengaruh nyata (P<0,05) terhadap kadar protein terlarut, kadar krom, kadar abu, kekuatan tarik, kemuluran, kekuatan sobek, dan suhu kerut. Sedangkan faktor lama bating berpengaruh nyata (P<0,05) terhadap kadar protein terlarut, kadar krom, kadar abu, kekuatan tarik, kemuluran, kekuatan sobek, dan suhu kerut. Interaksi kedua faktor berpengaruh nyata (P<0,05) terhadap kadar protein terlarut, kadar krom, dan kekuatan tarik, kekuatan sobek. Perlakuan terbaik yaitu pada penggunaan konsentrasi Rhizopus oligosphorus 2% dengan lama bating 90 menit dengan suhu kerut (1010C), protein terlarut (0,88%) dari limbah bating dan telah memenuhi persyaratan mutu untuk kekuatan tarik (2161,93 N/cm2), dan kekuatan sobek (441,31N/cm) untuk kulit Ular Air Tawar (SNI 06-4586-1998), namun tidak memenuhi persyaratan mutu kulit dari nilai kemuluran (92,73%), kadar krom (2,36%) dan kadar abu (4,84%). Kata kunci : Kulit ikan Nila, Bating agent, Protease, Rhizopus oligosphorus ABSTRACT Rhizopus oligosporus isolate have the protease enzyme. This isolate is easily to find in the market in the form of termpeh starter and cheap so it can be used as an alternative to the commercial bating agent that are expensife and not environmentally friendly. The aim of the research is to know the effect of Rhizopus oligosphorus as bating agent to the quality of leather and to find the best concentration and duration of bating from tempeh starter as bating agent. The material used in this research were Nila (Oreochromis niloticus) skin and isolate of Rhizopus oligosphorus from commercial tempeh starter RAPRIMA. The research method used was experimental field. Analysis data in this research used an completely randomized factorial experimental design. Factor A (concentrations of isolate Rhizopus oligosphorus: 0,5%; 1%; 1,5%; 2%; and 2,5%) and factor B (duration of bating : 30 minute, 60 minute and 90 minute). The parameter tested in this reseacrh are soluble protein from bating waste, chrome content, ash content, tensile strength, % elongation, tearing strength, and shrinkage temperature. Based on the result, the value of soluble protein from bating waste 0,28 – 1,08%; chrome content 2,19 – 2,43%; ash content 4,38% – 4,95%; tensile strength 1647,43 – 2161,93 N/cm2; % elongation 90,36 – 109,11%; tearing strength 297,94 – 472,85 N/cm; and shrinkage temperature 98,33 – 101 0C. The results of the research showed that concentration of Rhizopus oligosphorus, had significantly (P<0.05) for soluble protein from bating waste, chrome content, ash content, tensile strength, % elongation, tearing strength, and shrinkage temperature. Meanwhile duration of bating factor had significantly (P<0.05) for soluble protein from bating waste, chrome content, ash content, tensile strength, % elongation, tearing strength, and shrinkage temperature. Interaction of each factor had significantly (P<0.05) for soluble protein from bating waste, chrome content, tensile strength, and tearing strength. Concentration of Rhizopus oligosphorus 2,0% with duration 90 minute was the best treatment with shrinkage temperature (1010C), soluble protein content (0,88%) and fulfilled the quality criteria tensile strength (2161,93 N/cm2), tearing strength (441,31 N/cm) for Fresh Water Snake Leather (SNI 06-4586-1998). However not fulfilled in elongation at break (92,73%),chrome content (2,36%) and ash content (4,84%). Keywords : Nila’s skin, Bating Agent, Protease, Rhizopus oligosphorus

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Journal Mail Official
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Location
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Jawa tengah

INDONESIA