| 摘要 |
PROBLEM TO BE SOLVED: To provide a fabric dyed with pyrroloquinoline quinone and an inexpensive and simple method of producing the fabric.SOLUTION: The method includes the steps of bringing a fabric into contact with a dyeing solution including pyrroloquinoline quinone represented by the following formula or its reduced form, or salt or ester thereof, and then bringing it into contact with a dyeing solution including metal ions or the like. |
