HISTOLOGICAL CHANGES ON MILKFISH SKIN (Chanos chanos) DURING POSTMORTEM

Abstract

Aquatic products are easily perishable commodity, one of them are fish skin. Information about the declining quality of milkfish skin has not been revealed yet. Milkfish skins were analysed to determine the chemical composition, postmortem storage on chilling temperatures, and compared the microstructure changes during postmortem. Measured parameters in this study were proximate, organoleptic score, and histological examination to observe the tissue damage that occurred in post mortem storage. Milkfish skin contained moisture, ash, lipid, protein, and carbohydrate were 64.74%; 2.43%; 4.76%; 23.74%; 4.34%, respectively. Milkfish skin entered prerigor at 0 days, rigormortis at 8 days, postrigor at 14 days, and the decomposed phase at 23 days of chilled storage. Milkfish skin began experiencing damage in rigormortis by the occurrence of degeneration. In postrigor and decomposed phase occurred cariolysis. In addition, in the decomposed phase there were empty spaces marked by the loss of the milkfish skin tissue due to cell death.

Keyword: chilling, histology, milkfish skin, postmortem. 

References
Angka SL, Mokoginta I, Dana D. 1984. Pengendalian Penyakit Ikan Histologi dan Hematologi Ikan-ikan Air Tawar yang Dibudidayakan. Departemen Pendidikan dan Kebudayaan. Direktorat Jenderal Pendidikan Tinggi. Institut Pertanian Bogor.
Angka SL, Mokoginta I, Hamid H. 1990. Anatomi dan Histologi Banding Beberapa Ikan Air Tawar yang Dibudidayakan di Indonesia. Departemen Pendidikan dan Kebudayaan. Direktorat Jendral Pendidikan Tinggi. Institut Pertanian Bogor.
AOAC.1995. Official methods of analysis (16th ed). Washington, DC: Association of Official Analytical Chemists.
Auborg SP, Pineiro C, Gallardo JM and Barros-velazquez J. 2005. Biochemical changes and quality loss during chilled storage of farmed turbot (Psetta maxima). Food Chem 90 : 445-452.
Chinabut S, Limsuwan C, Kitsawat P. 1991. Histology of The Walking Catfish, Clarias Bathracus. Departement of Fisheries Thailand.
Cormack DH. 1994. Buku Teks HAM Histologi. Tambajong J, penerjemah. Jakarta: Binarupa Aksara. Terjemahan dari: Ham’s Histology.
Hadim E, Djawad MI and Karim MY. 2002. Kondisi glikogen dalam hati juvenil ikan bandeng (Chanos chanos Forskal) yang dibantut. J Teknol Pangan (3)3 : 1-9
Jamilah, Tan, Umi Hartina and Azizah. 2011. Gelatins from three cultured freshwater fish skin obtained by liming process. Food Hydrocolloids 25(5) : 1256-1260.
Kelompok Kerja Data Statistik Kelautan dan Perikanan. 2010. Kelautan dan Perikanan dalam Angka. Jakarta: Kementerian Kelautan dan Perikanan.
Muyonga, Cole and Duodu. 2004. Extraction and physico-chemical characterisation of nile perch (Lates niloticus) skin and bone gelatin. Food Hydrocolloids 18(4) : 581-592.
Li X, Li J, Zhu J, Wang Y, Fu L and Xuan W. 2011. Postmortem changes in yellow grouper (Epinephelus awoara) fillet storage under vacuum packaging at 0 oC. Food Chem 126(3) : 896-901.
Nurilmala M, Nurjanah and Utama RH. 2009. Kemunduran mutu ikan lele dumbo (Clarias gariepinus) pada penyimpanan suhu chilling dengan perlakuan cara mati. J PHPI 12(1) : 1-16.
Nurjanah, Setyaningsih I, Sukarno and Muldani M. 2004. Kemunduran mutu ikan nila merah (Oreochromis sp.) selama penyimpanan pada suhu ruang. J PHPI 7(1) : 37-43.
Ocano-Higuera VM, Marquez-Rios E, Canizales-Davila M, Castillo-Yanez, Pacheco- AguilarR, Lugo-Sanchez ME, Garcia-Orozco and Graciano-Verdugo. 2009. Postmortem changes in cazon fish muscle stored on ice. Food Chem 116(4) : 933-938
Ocano-Higuera VM, Maeda-Martinez AM, Marquez-Rios E, Canizales-Rodríguez DF, Castillo-Yanez FJ, Ruíz-Bustos E, Graciano-Verdugo AZ and Plascencia- Jatomea M. 2011. Freshness assessment of ray fish stored in ice by biochemical, chemical and physical methods. Food Chem 125(1) : 49-54.
Olafsdottir, Martinsdottir, Oehlenschbger, Dalgaard, Jensen, Undeland, Mackie, Henehan, Nielsen and Nilsen. 1997. Method to evaluate fish freshness in research and industry. Trends in Food Sci & Technol 8(8) : 258-265.
Ozogul Y, Ozogul F, Kuley E, Ozkutuk, Gokbulut C and Kose S. 2006. Biochemical, sensory and microbiological attributes of wild turbot (Schophthalmus maximus) from the black sea during chilled storage. Food Chem 99(4) : 752-758.
Rodriguez O, Barros-velazquez J, Pineiro C, Gallardo JM and Auborg SP. 2006. Effect of storage on slurry ice on the microbial, chemical and sensory quality and on the shelf life of farm turbot (Psetta maxima). Food Chem 95(2) : 270- 278.
Roth B, Slinde E and Arildsen J. 2006. Pre or postmortem muscle activity in Atlantic salmon (Salmo salar); the effect on rigormortis and the physical properties of flesh. Aqualculture 257(1-4) : 504-510.