36 巻 (1970) 9 号 p. 945-948
The reflectance spectra of blue meat and haemocyanin-sulphide complex showed maxima at 550-570mμ and 530-550mμ respectively. A decrease of the percentage-reflectance is related to an increase of blueing. A linear relationship was found between the colour intensity and the content of copper combined with sulphide.