Abstract Reflectance colorimetry was investigated to measure the colour of whole (WMP) and skim milk (SKMP) powders, infant formulas (IF), an adult nutritional product (ANP), unsalted (USB) and salted (SB) butters. The colorimeter gave precise results and was cost effective, illustrating the benefits of the adoption of a colorimeter rather than the current practice of using reference charts and powders. New Zealand dairy products are yellower compared with other dairy products because of their relatively high naturally occurring β-carotene content.

中文翻译：

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乳制品比色法

摘要 研究了反射比色法来测量全脂 (WMP) 和脱脂奶 (SKMP) 奶粉、婴儿配方奶粉 (IF)、成人营养产品 (ANP)、无盐 (USB) 和有盐 (SB) 黄油的颜色。色度计给出了精确的结果并且具有成本效益，说明了采用色度计而不是当前使用参考图表和粉末的做法的好处。与其他乳制品相比，新西兰乳制品更黄，因为它们天然存在的 β-胡萝卜素含量相对较高。