Color Measurement: The tristimulus values X, Y, and Z are obtained by multiplying together: the illuminant's spectrum, the object's reflectance and transmittance, and the observer's standard function. Hunter L,a,b (1958). CIE L,a,b (1976) → currently recommended scale. Both are mathematically derived from the tristimulus values X, Y. L = Brightness (from black to white). C* = Chroma (color intensity). h = Hue (hue, chromatic angle in degrees).
visual analysis--> Technical and analytical measures: Used to evaluate quality performance objectively--> specificity, accuracy, precision, sensitivity
Sampling--> batch preparation, making the sample homogeneous, preventing microbial deterioration, and enabling the effective extraction of the compounds to be analyzed. Regulatory definition (EC Regulation 882/04): Sampling = sampling of a food or substance to verify its compliance with feed and food regulations and animal health. Key terms: specimen (single sample), perishability, and short expiration date
process indicators--> total microbial load, health index--> presence of pathogenic germs
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