scholarly journals UJI MUTU IKAN CAKALANG (Katsuwonus pelamis-L) DAN IKAN TONGKOL (Euthynnus affinis) SEGAR DI TPI TUMUMPA SELAMA PENYIMPANAN DINGIN

2017 ◽  
Vol 5 (2) ◽  
pp. 40 ◽  
Author(s):  
Desta Ekasari ◽  
I Ketut Suwetja ◽  
Lita ADY Montolalu

The skipjack tuna (Katsuwonus pelamis-L) or the locally known as Cakalang and the mackerel tuna (Euthynnus affinis) or tongkol as it known locally are the types of fishes that have high economic value. The aim of this research is to observe the decrease in freshness quality of the skipjack tuna and the mackerel tuna that have been stored for 14 days in a cool box with the temperature of 0–5ºC, with the supporting data based on The TVB-N analysis, organoleptic analysis and Miogobin value analysis. The results using the three testing procedures which are consists of TVB-N value, organoleptic value and Mioglobin value, indicated that the meat of the mackarel tuna have more faster rate of degradation than the skipjack tuna. Data from the result of TVB-N anova calculation proved that the type of fish have no influence on the TVB-N value, while the storage duration are very influential the TVB-N value. In data of organoleptic value the general impression of skipjack tuna and the mackerel tuna obtained from the anova calculated imply that the type of fish influence the appearance and texture but not with the eyes gills and odour . While the treatment of storage time are impacted greatly on the appearance, texture as well as gills and odour. Keyword: TVB-N, Organoleptic, Mioglobin.   Ikan cakalang(Katsuwonus pelamis-L) dan ikan tongkol (Euthynnus affinis) merupakan salah satu jenis ikan yang mempunyai nilai ekonomi tinggi. Tujuan penelitian ini yakni untuk melihat kemunduran mutu kesegaran ikan cakalang dan ikan tongkol yang disimpan selama 14 hari dengan suhu 0–5ºC di cool box. Metode yang digunakan yaitu analisa TVB-N, analisa organoleptik dan analisa nilai Miogobin sebagai pendukung. Hasil analisa dengan tiga metode uji yaitu nilai TVB-N, nilai organoleptik dan nilai mioglobin, semuanya mengatakan bahwa daging ikan tongkol lebih cepat terdegradasi dibandingkan dengan ikan cakalang. Data hasil perhitungan anova TVB-N menyatakan bahwa jenis ikan tidak mempengaruhi kadar TVB-N sedangkan waktu lama penyimpanan sangat mempengaruhi tingkat kadar TVBN. Pada data nilai organoleptik kesan umum ikan cakalang dan ikan tongkol pada hasil perhitungan anova didapatkan jenis ikan mempengaruhi kenampakan dan tekstur tetapi tidak untuk mata, insang dan bau Sedangkan untuk perlakuan lama penyimpanan sangat mempengaruhi pada kenampakan, tekstur, insang, mata dan bau. Kata Kunci: TVB-N, Organoleptik, Mioglobin.

2017 ◽  
Vol 5 (2) ◽  
pp. 64 ◽  
Author(s):  
Steven Tumonda ◽  
Hanny Welly Mewengkang ◽  
Semuel Marthen Timbowo

Skipjack tuna (Katsuwonus pelamis L.) has a high economic value, both as an export commodity and for local consumption. In Indonesia, especially in North Sulawesi the total catch of skipjack tuna is high. The purpose of this research was to determine the quality of the skipjack tuna sold in two traditional markets, namely (A) Pasar Pinasungkulan Karombasan and (B) Pasar Bersehati, Manado. The moisture content of skipjack tuna sold in the market (B) does not meet the SNI quality requirement (max 60% moisture content of smoked fish). The pH value of the skipjack tuna  in market A and B still meets the quality requirements during storage in room temperature. Based on the results of moisture content and pH value, it can be concluded that the skipjack tuna purchased from Market A was still good for consumption up to 2 days storage in room temperature whereas fish from market B was not safe for consumption. Ikan cakalang (Katsuwonus pelamis L) mempunyai nilai ekonomis tinggi, baik sebagai komoditi ekspor maupun konsumsi  lokal. Di Indonesia khususnya perairan Sulawesi utara produksi ikan cakalang termasuk tinggi. Tujuan dari penelitian ini adalah untuk mengetahui mutu dari ikan cakalang asap yang dijual di dua pasar tradisional, yaitu (A) Pasar Pinasungkulan Karombasan dan (B) Pasar Bersehati, Manado. Kadar air ikan cakalang asap yang dijual di pasar (B) tidak memenuhi syarat mutu SNI, yaitu 60% kadar air untuk ikan asap. Nilai pH ikan cakalang asap yang dijual di pasar A dan B selama penyimpanan suhu ruang masih memenuhi syarat mutu ikan ikan asap. Dari hasil penentuan kadar air dan nilai pH serta data yang diperoleh pada penelitian ini, dapat disimpulkan bahwa ikan cakalang asap yang dibeli dari Pasar A masih layak dikonsumsi sampai pada 2 hari penyimpanan dalam suhu ruang, dibandingkan dengan ikan yang dibeli dari pasar B.Kata Kunci: Kajian Mutu, Ikan Cakalang (Katsuwonus pelamis L), Ikan Asap.


2019 ◽  
Vol 5 (2) ◽  
pp. 211
Author(s):  
I Gusti Ayu Febiana Putri Wardeni ◽  
Pande Gde Sasmita Julyantoro ◽  
Rani Ekawaty

Skipjack Tuna (Katsuwonus Pelamis) is one of the big pelagic fish in fishery resources that has high economic value and plays an important role in export activity in Indonesia. Catch activities for consumption needs for people could threatened of Skipjack Tuna availability. The growth pattern of Skipjack Tuna is needed to used as references for the appropriate management plan to protect Skipjack Tuna. The research was conducted from February to April 2017 at PPI Kedonganan, Kuta District, Badung, Bali. The fish were collected by simple random sampling method. This study showed that gillnet and handline were used as fishing gears. The length frequency distributions were in the long-range of 315-337 mm means the catch fish is still young. The growth pattern of Skipjack Tuna was negative allometric means length growth was faster than weight growth. The growth parameters of Skipjack Tuna were obtained by the asymptotic length (Linf) of 875.2 mm, growth coefficient (K) of 0.09, and theoretical age (t0) of -0.78. Skipjack Tuna have small body size with condition factors were ranged from 0.8783-1.7269. It can be concluded that these methods can be used to determine the appropriate management efforts.


2010 ◽  
Vol 8 (1) ◽  
pp. 26
Author(s):  
E P Samodra ◽  
H Cahyono

<p>The research was conducted to investigate the effect of soaking meat of Peranakan Ongole cattle with ascorbic acid and storage duration at 50C on physical quality of meat. The experiment was done in Complete Randomised Design by factorial 3 x 3. First factor was ascorbic acid with 3 levels (0%, 5%, 1%), and second factor is storage duration with 3 levels (0, 5, and 6 days). Variables that were measured: tenderness, cooking loss, water holding capacity and pH. Data were analyzed by variance analysis and the significant result were tested by Duncan’s test. Tenderness average for ascorbic acid ranging between 1,60 – 1,62 kg/cm2, and for storage duration was increased from 1,83 to 1,38 kg/cm2. Cooking loss average for ascorbat acid ranged from 43,33 to 44,89%, and for storage duration increased from 40,00 to 47,00%. Water holding capacity average for ascorbic acid ranging between 32,88 – 33,65%, but for storage duration decreased from 34,61 to 32,32%. The pH average for ascorbic acid ranging from 5,99 to 6,16, and increased for storage duration from 6,43 to 5,84. It can be concluded that physical quality of beef cattle was not affected<br />bay ascorbic acid up to 1%, but was significantly decreased by storage duration (p&lt;0,05).</p><p>Key words: Pernakan Ongole meat, ascorbat acid, storage time</p>


2020 ◽  
Vol 3 (2) ◽  
pp. 165
Author(s):  
Rahdi Fajar Miftahulkhair ◽  
Andi Besse Patadjai ◽  
Suwarjoyowirayatno Suwarjoyowirayatno

ABSTRACT         The aim of this study was to determine the effect on the freshness quality of thorns leaves milkfish storing at ambient temperature in vacuum packaging. This study used a non-factorial randomized design (CRD) which was storage time consisting of 4 treatments H0 (0 days), H2 (2 days), H4 (4 days), and H6 (6 days). Each treatment was carried out with 3 times replication. Based on the test results, it showed that the difference in different storage duration significantly affected on freshness value of fish (TVB and TMA) of thorns leave milkfish at ambient temperature, along with the time of storage of vacuum packaged fish, the value of TVB and TMA increased on the 6th day of storage (H6) had the highest TVB and TMA values of 24.40 mgN / 100g and 3.43 mgN / 100g, respectively. Keywords: milkfish leave thorns, pindang, sensory, vacuum.ABSTRAKTujuan dari penelitian ini adalah untuk mengetahui nilai kesegaran ikan pindang bandeng tanpa duri kemasan vakum pada suhu ambient. Penelitian ini menggunakan rancangan percobaan adalah Rancangan Acak Lengkap (RAL) non faktorial yakni waktu penyimpanan yang terdiri dari 4 perlakuan yaitu H0 ( 0 hari), H2 (2 hari), H4 (4 hari) dan H6 (6 hari). Masing-masing perlakuan dilakukan sebanyak tiga kali pengulangan, sehingga diperoleh jumlah satuan percobaan sebanyak 12 unit. Berdasarkan hasil pengujian, perbedaan lama penyimpanan berbeda secara signifikan mempengaruhi nilai kesegaran ikan (TVB dan TMA) bandeng tanpa duri yang disimpan pada suhu ambeien, seiring dengan  waktu penyimpanan ikan pindang bandeng tanpa duri kemasan vakum, nilai TVB dan TMA meningkat. Pada hari ke 6 penyimpanan (H6) memiliki nilai TVB dan TMA tertinggi masing-masing 24,40 mgN/100g dan 3,43 mgN/100g.Kata kunci: ikan bandeng tanpa duri, pindang, vakum


2021 ◽  
Vol 17 (8) ◽  
Author(s):  
Clarissa Maia de Aquino ◽  
Gracienhe Gomes dos Santos ◽  
Maur´ício Laterça Martins ◽  
Vildes Maria Scussel

The skipjack tuna (Katsuwonus pelamis) is commonly found in the tropical waters of the oceans. It is a fishing resource of high economic value and available for national and international markets. Therefore, it is important to know the fish parasites for a correct sanitary inspection, as the pathogenesis in humans can occur through spoliative, toxic or mechanical action. This study aimed to identify the zoonotic parasitic fauna that infects the beautiful-striped using morphological methods. A total of 06 samples were analyzed. The fish were necropsied for parasitological evaluation of the musculature and internal organs. The samples were visually inspected and the structures with morphology combining with parasitic shapes were analyzed both in stereoscopic and microscope. The parasites found were fixed in 70% alcohol for later identification. All samples showed the presence of zoonotic parasites for humans. Two genera of zoonotic parasites have been found for humans that have beautiful tuna as their hosts, namely Anisakis sp. (Nematoda) and Trypanorhyncha (Eucestoda). A 100% of the infections occurred in the muscles and 66.6% in the liver. The results reinforced the importance of inspection by responsible organisms on the importance of evisceration as quickly as possible to avoid migration of larvae to the muscle.


DEPIK ◽  
2018 ◽  
Vol 7 (2) ◽  
pp. 119-126
Author(s):  
Makwiyah A. Chaliluddin ◽  
Ratna M. Aprilla ◽  
Junaidi M. Affan ◽  
Abdullah A. Muhammadar ◽  
Heri Rahmadani ◽  
...  

The existence of fish aggregating devices (FADs) in a waters is able to establish a new fishing ground that potential waters. FADs are able to attract the attention of the gathering of fishes and other aquayic organisms around it, increasing the density of fish around FADs can increase the chances of successful catching operation, and therefore the FADs has benefited significantly to increase the capture fishery production significantly. The purposes of the research were to evaluate the catching composition of purse seine production  using FADs and non FADs, and to examine the fectiveness of FADs. This research was conducted on February 1 - 28, 2018 located at Pusong Waters, Lhokseumawe City. The survey  method was used in this study. The direct sampling by following the fisherman in fishing activities was performed both the purse seine with FADs and no FADs. Total purse seine catches during the research were 4,320 kg consisting of Long Jawed Mackerel (Rastrelliger sp.) 1,280 kg (29.63%), Decapterus Fish ( Decapterus sp.) 350 kg (8,107%), skipjack tuna (Katsuwonus pelamis) 845 kg (19.56 %), tuna fish (Euthynnus affinis) 720 kg (16.67%), Torpedo scad (Megalaspis cordyla) 300 kg (6.94%), Queenfish 140 kg (3.24%), and starry triggerfish (Abalistes stellaris) 685 kg (15.86%). It was concluded that the purse seine used FADs is more effective  compared to the a purse seine that does not use FADs.Keberadaan rumpon di suatu perairan mampu menarik perhatian berkumpulnya ikan dan organisme lain disekitarnya, sehingga dapat meningkatkan hasil tangkapan ikan. Penelitian ini bertujuan untuk menganalisis komposisi hasil tangkapan purse seine yang menggunakan rumpon dan purse seine yang tidak menggunakan rumpon, dan menilai efektivitas rumpon dalam mengumpulkan ikan. Penelitian ini dilaksanakan pada 01 - 28 Februari 2018 bertempat di Perairan Pusong, Kota Lhokseumawe. Metode penelitian yang digunakan adalah metode survei, yaitu dengan mengikuti nelayan dalam kegiatan penangkapan ikan, baik nelayan purse seine yang menggunakan rumpon dan nelayan purse seine yang tidak menggunakan rumpon. Data ikan hasil tangkapan yang diperoleh dihitung jumlah ikan hasil tangkapan dan diidentifikasi spesies ikan dan selanjutnya dibandingkan dengan hasil tangkapan nelayan yang menggunakan rumpon dan ikan hasil tangkapan nelayan yang tidak menggunakan rumpon. Total hasil tangkapan purse seine selama penelitian sebanyak 4.320 kg terdiri dari kembung (Rastrelliger sp.) 1.280 kg (29,63%), layang (Decapterus sp.) 350 kg (8,107%), cakalang (Katsuwonus pelamis) 845 kg (19,56%), tongkol (Euthynnus affinis) 720 kg (16,67 %), tegang ekor/tetengkek (Megalaspis cordyla) 300 kg (6,94 %), talang/daun bamboo (Scomberoides lysan) 140 kg (3,24%), dan ayam-ayam (Abalistes stellaris) 685 kg (15,86 %).  Dari kedua jenis kegiatan penangkapan ikan tersebut, maka purse seine menggunakan rumpon lebih efektif dibandingkan purse seine yang tidak menggunakan rumpon sebagai daerah penangkapan ikan.


Author(s):  
Irham . ◽  
Amirul Karman ◽  
Kusdi Hi Iksan

ABSTRACTTernate Island lies in a strategic location as it is situated in the middle of  the main fishing ground for skipjack (Katsuwonus pelamis) fishing using pole and line (huhate) and fish aggregating devices (FADs). As typical pelagic fish, skipjack that is gathered near the water surface is the younger fish, likewise the ones which are caught around FADs. Therefore, this fishing method has caused serious problem due to the domination of young fish and increasing bycatch and discard. The objective of this research is to analyze the size structure of the fork length, appropriate size for catching, catch composition, bycatch and discard level. Pole and line catch samples were collected in 3 months fromMay to July 2018. The results show that in average, skipjack tuna caught in the study location was undersize. The total catch is predominantly targeted fish which has a higher economic value compared to bycatch and discarded fish. Even though bycatch in the pole and line fisheries are low, reduction efforts are still required. which can be done by sorting bycatch and unwanted fish then discard it into the sea when the fish is still alive.Keywords: biology, pole and line, sustainability status, Ternate City ABSTRAKPosisi Pulau Ternate sangat strategis karena berada di tengah perairan yang menjadi daerah operasi penangkapan cakalang (Katsuwonus pelamis) dengan alat tangkap huhate (pole and line) yang dibantu dengan penggunaan rumpon. Sebagaimana ikan pelagis lainnya,  ikan-ikan cakalang yang berkumpul di lapisan permukaan air cenderung tergolong ikan-ikan muda. Oleh karena itu, cakalang yang tertangkap di sekitar rumpon juga cenderung ikan-ikan yang masih muda. Fenomena ini menyebabkan munculnya sebuah masalah besar, yaitu dominasi ikan-ikan muda, selain itu juga sering tertangkap ikan yang bukan target tangkap yang terdiri dari bycatch dan discards. Tujuan dari penelitian ini adalah menganalisis struktur ukuran panjang cagak dan ukuran cakalang layak tangkap, komposisi hasil tangkapan, persentase bycatch dan discards. Sampel hasil tangkapan huhate dikumpulkan selama 3 bulan (Mei sampai Juli 2018). Hasil penelitian menunjukkan bahwa rataan cakalang di lokasi penelitian didominasi ukuran belum layak tangkap. Total hasil tangkapan didominasi ikan target, sementara itu bycatch yang tertangkap memiliki nilai ekonomis yang baik dan tidak ditemukan discards. Walaupun bycatch pada perikanan huhate rendah namun usaha-usaha untuk meminimumkan tetap perlu dilakukan. Salah satu usaha yang bisa dilakukan adalah menyortir hasil tangkapan, ada apabila ada ikan yang akan dibuang ke laut, dilakukan dalam keadaan masih hidup.Kata Kunci: Biologi, huhate (pole and line), status keberlanjutan, Kota Ternate


2018 ◽  
Vol 9 (2) ◽  
pp. 717-726
Author(s):  
Christina Litaay ◽  
Sugeng Hari Wisudo ◽  
John Haluan Haluan ◽  
Bambang Harianto

Fish freshness plays an importantant role in determining quality of fish product. Organoleptic is one of sensorik method for determining fish freshness. The fish deterioration mainly affected by temperature. This study aimed to determine the best method for determining organoleptic quality of skipjact tuna based on chilling methods and storage time. Fish sampling were taken from the Seram Sea, Maluku Province. Chilling methods was done by the different ratio between the ice and fish: first was without using ice, second was ratio 1:1 and the third was ratio 1:2. The time storage were 0, 2, 4, and 6 hours.The results showed that chilling methods ratio between the ice and fish of 1:1 with 6 hours storage time provided the best organoleptic quality with eye 8.87, mucus 8.83, gill 8.67, meat 8.73, odour 8.80, and texture 8.86.  Keywords: chilling methods, organoleptics, skipjact tuna


2021 ◽  
Vol 944 (1) ◽  
pp. 012009
Author(s):  
I Ayuningtias ◽  
I Jaya ◽  
M Iqbal

Abstract Yellowfin tuna (Thunnus albacares), mackerel tuna (Euthynnus affinis), and skipjack tuna (Katsuwonus pelamis) have important economic values for the capture fisheries in Indonesia. Activities of identifying these fish and other types of tuna have been done manually, which can lead to errors and ultimately affect statistics, stock estimates, or traceability. The aim of this research is to use deep learning methods in identifying three species of tuna, specifically yellowfin tuna, mackerel tuna, and skipjack tuna. YOLO’s newest model, YOLOv5, was used to identify the fish. The number of epochs that produces the optimum accuracy value for use in the YOLOv5 model is 400. The values for training loss, accuracy, precision, recall and F1-Score when the model is learning with a total of 400 epochs are 0.000253, 95%, 98.1%, 93.9%, and 96%. Based on these results, the three species of tuna can be identified with high accuracy.


2020 ◽  
Vol 5 (1) ◽  
pp. 27-40
Author(s):  
Meivie Lintang ◽  
Olvie Tandi ◽  
Payung Layuk

Chrysanthemum (Dendranthema grandiflora) is an ornamental plant that has high economic value, including flowers that are in great demand at domestic or abroad.  As cut flowers, chrysanthemums are used for decoration and flower arrangements at weddings, and for opening new offices.  The quality of cut flowers depends on the appearance and durability of freshness. Flowers with prime quality have a higher sale value compared to low-quality cut flowers. To maintain the quality of prime cut flowers still need to be implemented several treatments, especially when the flowers are ready to harvest to the consumers.  The handling of post-harvest chrysanthemums is an important factor that is inseparable from the stages of cultivation and greatly influences the selling value and added value that will be obtained by farmers and traders. The use of pulsing and holding liquid during display will extend the chrysanthemum vase life. By implementing post-harvest chrysanthemums in accordance with handling procedures (SOP), chrysanthemums will be obtained that can meet quality standards and can provide added value for farmers and flower traders


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