Flavonoids: Ukiyo-e colorant

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Yoritomo's Hunt by Torii Kiyomitsu I

Flavonoids フラボノイド: A group of organic colorant composed of heterocyclic aromatic compounds. For this database, a group of organic yellow colorants have been grouped under flavonoids due to this common chemical composition and difficulty in identifying them individually. Organic yellow colorants that have thought to have been traditionally used in ukiyo-e prints and fall into this category are: Gardenia (Gardenia jasminoides) or kuchinashi (梔子), Miscanthus tinctorius or kariyasu (苅安), Chinese bayberry (Myrica rubra) or yamamomo (山桃), Japanese pagoda tree (Styphnolobium japonicum) or enju (槐), and Toringo crabapple (Malus toringo) or zumi (棠梨).

Flavonoids have been detected throughout the production of prints from 1690s through the 1860s. With current non-destructive analytical techniques, it is difficult to identify the exact source of each flavonoid. Flavonoids are duller and more beige when compared to the vibrant yellows produced by turmeric and orpiment. On prints, the dull appearance of flavonoids is little known since it can be their natural state or due to age and/or fading.

For additional information see: Flavonoid, Gardenia, Gardenia LC, Kariyasu, Chinese grass (Miscanthus tinctorius) LC, Pagoda tree, Pagoda tree (Styphnolobium japonicum) LC, Zumi

Examples of Flavonoids in Ukiyo-e Prints

11.13273-pt1-detail.png

11.13273-Pt1-EEM.jpg
Pt 1: Hand colored
Torii Kiyotada I, 11.13273

11.19633-pt4-detail.png

11.19633 EEM June 11 2014.jpg
Pt 4: Printed
Suzuki Harunobu, 11.19633

11.14364-pt5-detail.png

1114364-Pt5-EEM.jpg
Pt 5: Printed
Kitagawa Utamaro I, 11.14364

11.30331-pt6-detail.png

11.30331-Pt6-EEM.jpg
Pt 6: Printed
Utagawa Toyokuni, 11.30331

11.20417-pt7-detail.png

11.20417 EEM Jan 20 2019.jpg
Pt 7: Table
Katsushika Hokusai, 11.20417

Analysis

Flavonoids, such as the Japanese pagoda tree (enju) and Miscanthus tinctorius (kariyasu) fluoresce weakly under ultraviolet radiation and have some differences in their EEM patterns. At this point, however, due to the difficulty in distinguishing these organic yellows, the decision was made to group them as flavonoids to minimize mistakes in identification.

Images of Flavonoids

List of Prints

Below is a list of prints where flavonoids were detected.

Pages in category "Flavonoids: Ukiyo-e colorant"

The following 53 pages are in this category, out of 53 total.