Original scientific paper
The sensory quality of seafood as affected by intense light pulses
Igor Tomašević
orcid.org/0000-0002-1611-2264
; Odjel za prehrambenu tehnologiju namirnica životinjskog podrijetla, Sveučilište u Beogradu, Poljoprivredni fakultet, Nemanjina 6, 11080 Beograd, Republika Srbija
Abstract
The study represents systematical evaluation of the intense light pulses (ILP) on sensory quality of seafood. Four seafood species (tuna, salmon, flounder and crab) were treated with 1 and 5 light pulses (pulse duration of 300 μs and pulse intensity of 3.4 J/cm2) at a rate of one pulse per 2 seconds. All the seafood samples were assessed as very acceptable, with the total score value equal or greater than 4.6 regardless of the ILP treatment applied. The most sensitive sensory attribute to the ILP treatment was odor. Pulsed light decreased L* values in tuna but only after the higher treatment (17 J/cm2) was applied while a* and b* values were not significantly different to the control samples. The lower dose of pulsed light (3.4 J/cm2) had no effect on the color values of tuna in our study. The salmon samples exhibited significantly lower L* values even after the lower dose was applied while a* and b* values remained unaffected by the ILP treatment. Flounder and crab meat samples revealed that its yellowness was more sensitive to ILP compared to lightness and redness. Study revealed that ILP can affect the color of seafood but not to the extent of significantly disturbing total sensory scores.
Keywords
light pulses; pulsed light; sea food; fish; sensory quality; color
Hrčak ID:
141125
URI
Publication date:
1.5.2015.
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