Studies on “Green” Tuna-VI
Comparison of Green Tuna Pigment with Sulfmyoglobin and Cholehemochrome in Their Absorption Spectra
1968 Volume 34 Issue 9 Pages 810-815
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1968 Volume 34 Issue 9 Pages 810-815
The green tuna pigment obtained from our model system was compared with sulfMb and choleheme or verdoheme compounds on their absorption spectra.
1. SulfMb in aqueous SDS does not show any absorption in the orange region of the spectrum, while the green tuna pigment revealed a weak but definite maximum at 640 ?? 605 mμ.
2. Absorption maxima reported on cholehemichrome, cholehemochrome, and carboxycholehemochrome did not agree with those observed on the corresponding derivatives of green tuna pigment.
3. Absorption spectrum of the green tuna pigment lacked the maximum at 760 mμ specific for verdomyoglobin.
From these results, the pigment responsible for “green” tuna was concluded to be different in the structure of prosthetic group from sulfMb, and choleheme and verdoheme compounds.
