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

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== Description ==
 
  
[[Sappanwood]] (''suo''): A natural red dye produced from the hot water extraction of 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). Brazilwood was used to dye textiles as early as the 12th century in Europe. Its principal colorant is [[brasilin]], a hydroxyanthraquinone, that gives a deep red to brownish color when it is oxidized to form brasilein. Brazilwood produces purple shades with a chrome mordant and crimson shades with alum. When mordanted on chalk, brazilwood produces lakes ranging in colors from lavender to cherry to deep red. It was a cheaper red lake pigment than carmine. Brazilwood dye has been used for textile dyes, inks, paints, varnish tints, and wood stains. The color is not lightfast and fades when heated.
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[[File:SC347460.jpg|right|400px|link=Harunobu, The Tenth Month, from an untitled series of Twelve Months, 11.20124|The Tenth Month by Suzuki Harunobu]]
  
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<font size="3">'''[[Brazilwood dye|Sappanwood]]'''</font> 蘇芳 (''suō''): A red dye extracted from several tropical trees, such as ''Paubrasilia echinata'', commonly known as brazilwood from Brazil and ''Biancaea sappan'', commonly known as sappanwood from Southeast Asia. Its principal colorant is [[brasilin]], a hydroxyanthraquinone, that gives a deep red to brownish color when it is oxidized to form brasilein.
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Sappanwood has been detected but the use of it appears to have been infrequent. Due to its sensitivity to pH, sappanwood can be manipulated to produce a range of colors as pink, red, or oranges. It is unknown if printers adjusted the pH to create a range of colors. Evidence of pH manipulation is difficult to extrapolate from the prints
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themselves since many of the examples have discolored to a dull pinkish brown due to fading and/or ageing.
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'''For additional information see:''' [[Brazilwood dye|Sappanwood]], [https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:481889-1 ''Biancaea sappan'' (Kew)]
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<br>
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<br>
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== Examples of Sappanwood in Ukiyo-e Prints ==
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{| class="wikitable" style="display: inline-table;font-size:90%;text-align:center;width:15%"
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|[[File:11.13225-pt8-detail.png|200px|link=Toshinobu, Actors Matsushima Hyôtarô as the Courtesan Senzai and Nakamura Ujûrô and Nanboku Magotarô as Samurai, 11.13225]]
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|-
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|
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[[File:Indigo FORS.JPG|200px]]<br>[[Toshinobu, Actors Matsushima Hyôtarô as the Courtesan Senzai and Nakamura Ujûrô and Nanboku Magotarô as Samurai, 11.13225|Pt 8: Hand colored<br>Okumura Toshinobu, 11.13225]]
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|}
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{| class="wikitable" style="display: inline-table;font-size:90%;text-align:center;width:15%"
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|[[File:11.30137-pt1-detail.png|200px|link=Komatsuken, Young Man as the Bodhisattva Monju, 11.30137]]
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|-
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[[File:Indigo FORS.JPG|200px]]<br>[[Komatsuken, Young Man as the Bodhisattva Monju, 11.30137|Pt 1: Printed<br>Komatsuken, 11.30137]]
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|}
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{| class="wikitable" style="display: inline-table;font-size:90%;text-align:center;width:15%"
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|[[File:11.25669-pt2-detail.png|200px|link=Eisen, Minazuru-hime as Ono no Komachi and Benkei as Kisen Hôshi, from the series Characters from the Life of Ushiwaka as the Six Poetic Immortals, 11.25669]]
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|-
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|
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[[File:Indigo FORS.JPG|200px]]<br>[[Eisen, Minazuru-hime as Ono no Komachi and Benkei as Kisen Hôshi, from the series Characters from the Life of Ushiwaka as the Six Poetic Immortals, 11.25669|Pt 2: Printed<br>Keisai Eisen, 11.25669]]
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|}
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{| class="wikitable" style="display: inline-table;font-size:90%;text-align:center;width:15%"
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|[[File:11.21066-pt4-detail.png|200px|link=Shinsai, Chapters 16–18, from the series The Tale of Genji, 11.21066]]
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|-
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[[File:Indigo FORS.JPG|200px]]<br>[[Shinsai, Chapters 16–18, from the series The Tale of Genji, 11.21066|Pt 4: Printed<br>Ryūryūkyo Shinsai, 11.21066]]
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|}
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{| class="wikitable" style="display: inline-table;font-size:90%;text-align:center;width:15%"
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|[[File:11.20413-pt5-detail.png|200px|link=Hokusai, Stone, from the series Three Pictures for a Children's Hand Game, 11.20413]]
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|-
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[[File:Indigo FORS.JPG|200px]]<br>[[Hokusai, Stone, from the series Three Pictures for a Children's Hand Game, 11.20413|Pt 5: Printed<br>Katsushika Hokusai, 11.20413]]
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|}
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== Analysis ==
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Excitation Emission Matrix (EEM) spectroscopy can easily identify the organic reds: [[:Category:Safflower: Ukiyo-e colorant|safflower]], [[:Category:Madder: Ukiyo-e colorant|madder]], and sappanwood. Sappanwood does not fluoresces under UVA radiation and produces a unique EEM pattern.
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<gallery mode="packed" heights="200px" style="text-align:left">
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Sappanwood color.PNG|<center>EEM plot for Sappanwood</center>
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Red EEM plots.jpg|<center>3D EEM plots for Red references</center>
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Red EmEx curves.jpg|<center>Overlay of EEM curves for Red references</center>
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FORS of reds.jpg|<center>Overlay of FORS spectra for Red references</center>
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Red UVVis images.jpg|<center>Visible light and UVA for Red references</center>
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</gallery>
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==Images of Sappanwood ==
 
<gallery>
 
<gallery>
Sappsnwood trees.JPG|Sappanwood (''Caesalpinia sappan'')
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Sappsnwood trees.JPG|Sappanwood (''Biancaea sappan'')
File:brazilwood raw.jpg|Cut pieces of brazilwood (''Caesalpinia brasiliensis'')
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File:Red bud_suo.jpg|Chips of Sappanwood
File:Red bud_suo.jpg|Red bud
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File:12 Sappanwood.jpg|Sappanwood
File:12 Sappanwood.jpg|Sappanwood, poowdered
 
File:06_Brazilwood comp.jpg|Dye mixtures from brazilwood juice
 
Sappanwood color.PNG|EEM Color
 
 
</gallery>
 
</gallery>
  
== Examples ==
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==List of Prints ==
 
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Below is a list of prints where sappanwood was detected.
[[Category:Ukiyo-e Colorants]]
 

Latest revision as of 23:32, 24 May 2024

The Tenth Month by Suzuki Harunobu

Sappanwood 蘇芳 (suō): A red dye extracted from several tropical trees, such as Paubrasilia echinata, commonly known as brazilwood from Brazil and Biancaea sappan, commonly known as sappanwood from Southeast Asia. Its principal colorant is Brasilin, a hydroxyanthraquinone, that gives a deep red to brownish color when it is oxidized to form brasilein.

Sappanwood has been detected but the use of it appears to have been infrequent. Due to its sensitivity to pH, sappanwood can be manipulated to produce a range of colors as pink, red, or oranges. It is unknown if printers adjusted the pH to create a range of colors. Evidence of pH manipulation is difficult to extrapolate from the prints themselves since many of the examples have discolored to a dull pinkish brown due to fading and/or ageing.

For additional information see: Sappanwood, Biancaea sappan (Kew)

Examples of Sappanwood in Ukiyo-e Prints

11.13225-pt8-detail.png

Indigo FORS.JPG
Pt 8: Hand colored
Okumura Toshinobu, 11.13225

11.30137-pt1-detail.png

Indigo FORS.JPG
Pt 1: Printed
Komatsuken, 11.30137

11.25669-pt2-detail.png

Indigo FORS.JPG
Pt 2: Printed
Keisai Eisen, 11.25669

11.21066-pt4-detail.png

Indigo FORS.JPG
Pt 4: Printed
Ryūryūkyo Shinsai, 11.21066

11.20413-pt5-detail.png

Indigo FORS.JPG
Pt 5: Printed
Katsushika Hokusai, 11.20413

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.


Images of Sappanwood

List of Prints

Below is a list of prints where sappanwood was detected.

Pages in category "Sappanwood: Ukiyo-e colorant"

The following 37 pages are in this category, out of 37 total.