Saffron

== Description ==
A natural, golden yellow colorant obtained from the flower stigmas of the Crocus sativus plant that is native to the Middle East. Saffron was used to color the robes of emperors in ancient Persia and later, the robes of Buddhist monks in Asia. It was introduced to Europe through Spain in the 8th century and used in manuscript illumination until the 16th century. The deep yellow to orange color in saffron is primarily due to crocetin and crocin. The colorants are extracted by boiling the dried flowers in water. Saffron is a substantive dye that produces a strong yellow color on alum mordanted and unmordanted wool. Copper mordanting produces a greenish yellow shade. Saffron was used for manuscript illumination and for coloring prints and maps. The transparent colorant was also used as a watercolor pigment and a tint in varnishes. It is still used as a dyestuff and as a cooking spice.
== Synonyms and Related Terms ==
Crocus sativus; Natural Yellow 6; CI 75100; karcom (Lat.); azafrán (Esp.); auripetrum colorant; safran (Fr., Dan.); safrankrokus (Dan.); Echter Safran (Deut.); zafferano (It.); safraan (Ned.); saffran (Sven.); szafran (Pol.); krokos bafikos (Gr.); zafora (Gr.); açafrão (Port.); crocin; crocetin; French saffron; zafran; crocus dye; red gold; vegetable gold
[[[SliderGallery rightalign|SaffronUCL.jpg~Raman|f219sem.jpg~SEM|f219edsbw.jpg~EDS|Slide25 FC219.PNG~XRF]]]
== Physical and Chemical Properties ==
* Crocetin is soluble in water, ethanol, alkali solutions. 
* Crocetin forms a blue solution in concentrated sulfuric acid.
== Additional Images ==
File:Saffranvt.jpg|Saffron crocus Crocus sativus
File:Saffronkes.jpg|Dried saffron
File:saffron C100x.jpg|Saffron, ground
File:07_Saffron comp.jpg|Dye mixtures of saffron
== Resources and Citations ==
* J.Hofenk-de Graaf, Natural Dyestuffs: Origin, Chemical Constitution, Identification, Central Research Laboratory for Objects of Art and Science, Amsterdam, September 1969.
* R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
* R.J. Adrosko, Natural Dyes in the United States, Smithsonian Institution Press, Washington, DC, 1968
* Helmut Schweppe, Schweppe color collection index and information book
* Palmy Weigle, Ancient Dyes for Modern Weavers, Watson-Guptill Publications, New York, 1974
* John and Margaret Cannon, Dye Plants and Dyeing, Herbert Press, London, 1994
* F. Crace-Calvert, Dyeing and Calico Printing, Palmer & Howe, London, 1876
* J. Thornton, 'The Use of Dyes and Colored Varnishes in Wood Polychromy', Painted Wood: History and Conservation, The Getty Conservation Insitute, Los Angeles, 1998
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Encyclopedia Britannica, http://www.britannica.com Comment: "saffron" [Accessed March 5, 2002]. color photo of plant
* Wikipedia: http://en.wikipedia.org/wiki/Saffron (Accessed Sept. 14, 2005)
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 60
* Colour Index International online at www.colour-index.org
* Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database