Organoleptic, Chemical and Microbiological Changes in European Eel (Anguilla anguilla L.) During Storage: Skinned vs. Unskinned Fish held at 2C and 5C

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TR Number
Date
2003-06-01
Journal Title
Journal ISSN
Volume Title
Publisher
Commercial Fish and Shellfish Technologies Program, Virginia Tech
Abstract

Studies were undertaken to examine quality deterioration in stored skinned and unskinned fresh eels derived from a commercial recirculation facility. Fish samples were held at 2 and 5T for 18 days and examined sensorially, chemically and microbiologically. Oil content of experimental animals averaged 39.1%, that for dry matter was 47.8% and 12.1% and 0.69% for protein and ash content respectively. Trimethylamine-oxide (TMA-0) and trimethylamine (TMA) levels remained below detection limits(< 0.7 mg N 100 g-1 throughout the study. Shelf life was extended for both skinned and unskinned fish at the lowest temperature. By day 14 of the trial, differences (P < 0.05) were detected by sensorial evaluation for both temperatures evaluated and between skinned and unskinned animals. Increases (P < 0.05) were detected for TVB-N throughout storage with fish held at 5°C expressing higher levels (P < 0.05). Sample lipid oxidation increased throughout the study period. TBA was determined as a suitable variable for predicting overall impression of product quality. K1 value illustrated significant (P < 0.0001; R2 0.72) polynomial correlation with overall impression.

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Keywords
Skinned vs. Unskinned Fish, Recirculating Aquaculture
Citation
Mclean, E., Ronsholdt, B., Roesen Norgaard, R., Kjolby Jensen, C. and Jacobsen, L., 2003. Organoleptic, Chemical and Microbiological Changes in European Eel (Anguilla anguilla L.) During Storage: Skinned vs. Unskinned Fish held at 2C and 5C. International Journal of Recirculating Aquaculture, 4. DOI: http://doi.org/10.21061/ijra.v4i1.1381