| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
The nanostructured color granules in outer skins of cephalopoda such as squids and octopus contains variety of pigments, which are candidates of new natural food dye. Though, the pigments of cephalopoda are known to be ommochrome type compounds, there is few report about the chemical nature of ommochrome pigments of cephalopoda.
Therefore, we extracted the pigments from the raw skins of Japanese flying squid and invented the HPLC method to analyse all pigments. As a result, the extract contained yellow, red, and purple pigments in the extract. We purified the purple pigment by sequential chromatography. The mass analysis of the purple pigment strongly suggested that the molecular formula of the pigment contained sulfur atoms.
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