Resumo

ZAPATA, Luz et al. Mathematical Correlation of Tomato Colour Indexes with Textural Parameters and Carotenoids Concentration. Cienc. docencia tecnol. [online]. 2007, n.34, pp.207-226. ISSN 1851-1716.

Tomato colour and texture attributes, concentration of colour responsiblecarotenoids and colour indexes as indicators of maturity were studied. The a*/ b*ratio (CIEL*a*b system) showed statistically significant differences among the different stages. As a result, this relation could be taken as a colour index reference in tomatoes. With regard to texture parameters, the puncture force decreased along the stages studied and this fact could be due to changes in the chemical composition. Since the a*/b* ratio showed a high correlation with concentrations of lycopene and β-carotene and with texture parameters, the proposed mathematical models could be valid for analyzing and predicting changes in the fruit carotenoids concentration and texture. This can determine the consumer´s acceptability from the organoleptical and nutritional point of view.

Palavras-chave : Tomato; Color indexes; Texture; Carotenoids.

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