2.11. Colour measurements

Okon Johnson Esua; Jun-Hu Cheng; Da-Wen Sun

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2.11. Colour measurements

OE Okon Johnson Esua

JC Jun-Hu Cheng

DS Da-Wen Sun

This method is extracted from research article: Ultrason Sonochem, Jul 2021

Novel technique for treating grass carp (Ctenopharyngodon idella) by combining plasma functionalized liquids and Ultrasound: Effects on bacterial inactivation and quality attributes

DOI: 10.1016/j.ultsonch.2021.105660

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The lightness (L*), redness (a*) and yellowness (b*) of the samples were measured along six symmetrical sections using a chromameter (CR-400, Konica Minolta Inc., Osaka, Japan) according to the CIELAB coordinates [12]. The chroma meter was standardised with a white calibration tile before each measurement. The average values of L*, a*, b* coordinates from the six sections were documented and the colour parameters were expressed as net colour difference (NCD) and whiteness index (WI) using the equations below:

where $L_{0}^{*}$ , $a_{0}^{*}$ and $b_{0}^{*}$ are the initial values of $L^{*}, a^{*}$ and $b^{*}$ .

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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