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      Multivariate correlation between color and mineral composition of honeys and by their botanical origin.

      Journal of Agricultural and Food Chemistry
      Analysis of Variance, Color, Flowers, Honey, analysis, Minerals, Plants, chemistry, Regression Analysis

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          Abstract

          The mineral content and color characteristics of 77 honey samples were analyzed. Eighteen minerals were quantified for each honey. Multiple linear regression (MLR) was used to establish equations relating the colorimetric CIELAB coordinates to the mineral data. The results obtained shown that lightness (L) was significantly correlated with S, Ca, Fe, As, Pb, and Cd for the dark honey types (avocado, heather, chestnut, and honeydew). For the light and brown honey types (citrus, rosemary, lavender, eucalyptus, and thyme), C(ab) and b showed the lower correlation with the mineral content of the honeys; their regression functions involve a few independent variables (Mg and Al for b and only Al for C(ab)). Furthermore, by means of application of linear discriminant analysis to the mineral content, it was possible to obtain a model that classifies the honeys by their lightness. The prediction ability of the built model, determined with the test set method, was 85%.

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          Author and article information

          Journal
          15796597
          10.1021/jf048207p

          Chemistry
          Analysis of Variance,Color,Flowers,Honey,analysis,Minerals,Plants,chemistry,Regression Analysis
          Chemistry
          Analysis of Variance, Color, Flowers, Honey, analysis, Minerals, Plants, chemistry, Regression Analysis

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