Physico-chemical, colorimetric, rheological parameters and chemometric discrimination of the origin of Mugil cephalus' roes during the manufacturing process of Bottarga

The aim of this work was to measure the physico-chemical and the colorimetric parameters of ovaries from Mugil cephalus caught in the Tortolì lagoon (South-East coast of Sardinia) along the steps of the manufacturing process of Bottarga, together with the rheological parameters of the final product....

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Bibliographic Details
Published in:Food research international 2018-06, Vol.108, p.128-135
Main Authors: Caredda, Marco, Addis, Margherita, Pes, Massimo, Fois, Nicola, Sanna, Gabriele, Piredda, Giovanni, Sanna, Gavino
Format: Article
Language:English
Subjects:
CIELab coordinates
Linear discriminant analysis
Mullet roes
Penetrometry test
Physico-chemical characterization
Principal component analysis
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Summary:The aim of this work was to measure the physico-chemical and the colorimetric parameters of ovaries from Mugil cephalus caught in the Tortolì lagoon (South-East coast of Sardinia) along the steps of the manufacturing process of Bottarga, together with the rheological parameters of the final product. A lowering of all CIELab coordinates (lightness, redness and yellowness) was observed during the manufacture process. All CIELab parameters were used to build a Linear Discriminant Analysis (LDA) predictive model able to determine in real time if the roes had been subdued to a freezing process, with a success in prediction of 100%. This model could be used to identify the origin of the roes, since only the imported ones are frozen. The major changes of all the studied parameters (p 
ISSN:0963-9969
1873-7145
DOI:10.1016/j.foodres.2018.03.039