AVALIAÇÃO DAS COORDENADAS COLORIMÉTRICAS DE LEITES UHT COM BAIXO TEOR DE LACTOSE

Abstract

The aim of this study was to evaluate the colorimetric coordinates L*, a*, b*, of chroma (C*) and hue angle (ho) in seven brands of sterilized milk (UHT) with and without lactose. The color space used was CIELAB, using a CM-700d portable colorimeter. The lowest values of L *, a *, b* and C* were observed in the skim milk samples (F-FD), with the highest hue angle (3.37-F and 3.72-FD). Samples of whole milk (B-BD, G-GD) presented higher values of luminosity (L*) and chroma, a greater tendency to red and yellow and lower values of ho. The statistical difference observed in the samples demonstrates that there is no standardization in the color of milk with low lactose content. However, physical color analysis can be an important and/or determinant measure in the indication of the quality standard of low lactose milk. PALAVRAS-CHAVE: cor, qualidade, leite integral, leite semidesnatado, leite desnatado