Difference between revisions of "Category:Sappanwood: Ukiyo-e colorant"

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==List of Prints ==
 
==List of Prints ==
 
List of prints where indigo was detected
 
List of prints where indigo was detected
 
 
[[Category:Ukiyo-e Print Colorants]]
 

Latest revision as of 10:26, 22 May 2020

Kamakura Village by Katsushika Hokusai

Sappanwood 蘇芳(suo): A red dye extracted from any of several tropical trees of the senna genus, Caesalpinia, such as C. brasiliensis (from Brazil), C. crista (from Pernambuco), C. echinata (peachwood from Nicaraugua), or C. sappan (sappanwood from East Indies and Asia). Its principal colorant is brasilin, a hydroxyanthraquinone, that gives a deep red to brownish color when it is oxidized to form brasilein. (Do we know it's sappanwood and not the others?)

Sappanwood has been detected but not frequently. Due to its sensitivity to pH, sappanwood can be manipulated to produce a range of pink, red, and oranges. It is unknown if the printer adjusted the pH to create a range of colors. It difficult to extrapolate from the prints since many of the examples have discolored due to fading and/or ageing, usually appearing as a dull pinkish brown.

For more information see: Sappanwood

Examples of Sappanwood in Ukiyo-e Prints

Dyed indigo.jpg

Indigo FORS.JPG
Beauties of the Yoshiwara by Suzuki Harunobu

Dyed indigo.jpg

Indigo FORS.JPG
Beauties of the Yoshiwara by Suzuki Harunobu

Dyed indigo.jpg

Indigo FORS.JPG
Beauties of the Yoshiwara by Suzuki Harunobu

Dyed indigo.jpg

Indigo FORS.JPG
Beauties of the Yoshiwara by Suzuki Harunobu

Dyed indigo.jpg

Indigo FORS.JPG
Beauties of the Yoshiwara by Suzuki Harunobu


Analysis

Excitation Emission Matrix (EEM) spectroscopy can easily identify the organic reds: safflower, madder, and sappanwood. Sappanwood does not fluoresces under UVA radiation and produces a unique EEM pattern....


Other Images of Sappanwood


List of Prints

List of prints where indigo was detected

Pages in category "Sappanwood: Ukiyo-e colorant"

The following 2 pages are in this category, out of 2 total.