Color Value
Color value
Japanese: 色価（しきか）
Numerical indicator of miso color. Objectively evaluates Maillard reaction progress.
Color value measures miso color using a spectrophotometer, typically at 420nm absorbance — higher values indicate darker color.
As aging advances Maillard reactions, color deepens, making color value an indirect maturation indicator. White and red miso show vastly different values. Combined with photo documentation, color changes are tracked more precisely. An analytical method converting subjective 'appearance' into objective numbers.
Color value is measured using a spectrophotometer, referencing absorbance at specific wavelengths (often 420nm or 530nm). Higher storage temperatures accelerate color value increase, linking to browning rate evaluation in accelerated testing. Predicting and controlling color change is indispensable in product design.