| abstract |
The present invention relates to a natural material comprising: a raw material selected from the group consisting of genipin, purified genipin, genipin precursor compound, iridoid compound, genipin derivative, genipin-containing substance, and any combination thereof; and a primary amine-containing compound. It relates to colorants. Further disclosed is a process for producing natural colorants. Further disclosed is a process for producing a natural colorant of the desired color. [Selection] Figure 4 |