Characteristics of blue pigment of common gardenia and dyeing the flower of Lilium longiflorum and Gypsophila paniculata with these pigment.

摘要

The Hunter b* value, pH and colour of yellow pigment from Gardenia jasminoides infected with Streptococcus mutans for 72 h were below 1, 5.5 and 10.9, respectively. The yellow pigment was bioconverted to a blue pigment. Petals of L. longiflorum cv. Georgia and Gypsophila paniculata cv. Bristol Fairy were dyed blue after immersing in 1% diluted solution of the blue pigment for 48 h. The vase life of L. longiflorum immersed in 4% diluted solution of the blue pigment for 24 h was shortened to 1-2 days..