ICUMSA in SugarSpecial Application Package for Merck Spectrophotometers |
Ancient, Sweet CrystalsSugar has been part of the human diet since ancient times. Traditional table sugar, or sucrose, is a disaccharide carbohydrate extracted from sugarcane or sugar beet using physical processes. The majority of the world’s sugar is produced in Asia and South America. Whether through direct consumption or via processed foods, almost everyone, everywhere consumes sugar on a daily basis. Color and Quality ControlThe quality of sugar is based on several criteria such as color, sucrose content, moisture, grain, and filterability. Of these, color is the most important feature of sugar, as it is directly related to purity. Compared to brown sugar, white sugar has undergone more refining and contains less contaminants and chemicals, thus it is more pure. |
The International Commission for Uniform Methods for Sugar Analysis (ICUMSA) is a regulatory organization which sets the global standard for quality control in sugar. The ICUMSA test evaluates the purity of sugar based on its color.
A colorimeter or photometer is used to measure the absorbance of sugar at different wavelengths. White sugar absorbs less light and results in lower ICUMSA values, whereas brown sugar absorbs more light and delivers higher values. Typically, an ICUMSA rating of 45 indicates a highly refined white sugar of high purity, whereas brown sugar would have a rating of around 1000.
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