Difference between revisions of "Aloes"

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m (Text replace - "== Authority ==" to "== Sources Checked for Data in Record ==")
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[[File:aloesuccotrinaPD2.jpg|thumb|Fynbos aloe  
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[[File:aloesuccotrinaPD2.jpg|thumb|Fynbos aloe ''Aloe succotrina'']]
 
 
''Aloe succotrina'']]
 
 
== Description ==
 
== Description ==
  
 
The juice from the Aloe genus of plants characterized by their spiny leaves. Examples of these lily-like plants include: Aloe vera (True aloe or common aloe); Aloe vulgaris (Barbados aloes), ''A.sinuta, A. socotrina'' (Socotrine or Bombay aloes), and ''A. capensis'' (Cape aloes). Heating the juice produces a thick, dark brown resin that has been used as a varnish to protect gilding. Aloes has also been heated to dryness to produce a brown residue that is ground to form a pigment. It contains barbaloin and small amounts of the C-glycoside of aloe-emodin (White 1986). Aloes was also used as a dye forming a yellowish brown color on wool or pale gray on cotton with an alumina mordant.
 
The juice from the Aloe genus of plants characterized by their spiny leaves. Examples of these lily-like plants include: Aloe vera (True aloe or common aloe); Aloe vulgaris (Barbados aloes), ''A.sinuta, A. socotrina'' (Socotrine or Bombay aloes), and ''A. capensis'' (Cape aloes). Heating the juice produces a thick, dark brown resin that has been used as a varnish to protect gilding. Aloes has also been heated to dryness to produce a brown residue that is ground to form a pigment. It contains barbaloin and small amounts of the C-glycoside of aloe-emodin (White 1986). Aloes was also used as a dye forming a yellowish brown color on wool or pale gray on cotton with an alumina mordant.
  
[[File:aloesuccotrinaPD1.jpg|thumb|Fynbos aloe  
+
[[File:aloesuccotrinaPD1.jpg|thumb|Fynbos aloe ''Aloe succotrina'']]
 
 
''Aloe succotrina'']]
 
 
== Synonyms and Related Terms ==
 
== Synonyms and Related Terms ==
  
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== Other Properties ==
 
== Other Properties ==
  
Soluble in hot water, alcohol, ether and essential oils.   
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* Soluble in hot water, alcohol, ether and essential oils.   
 
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* Aloe has a bitter flavor and strong odor.
Aloe has a bitter flavor and strong odor.
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* Refractive Index = 1.619
 
 
{| class="wikitable"
 
|-
 
! scope="row"| Refractive Index
 
| 1.619
 
|}
 
 
 
== Additional Information ==
 
  
R.White "Brown and Black Organic Glazes, Pigments and Paints" ''National Gallery Technical Bulletin'', 10:58-71, 1986.
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==Resources and Citations==
  
== Sources Checked for Data in Record ==
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* R.White "Brown and Black Organic Glazes, Pigments and Paints" ''National Gallery Technical Bulletin'', 10:58-71, 1986.
  
* Wikipedia, the free encyclopedia, at http://www.wikipedia.com  Comment: Aloe: species list at http://en.wikipedia.org/wiki/List_of_Aloe_species
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* Wikipedia: Aloe: species list at http://en.wikipedia.org/wiki/List_of_Aloe_species
  
 
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971  Comment: p. 671
 
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971  Comment: p. 671
  
* ''Encyclopedia Britannica'', http://www.britannica.com  Comment: Aloe" from Encyclopædia Britannica Premium Service.  [Accessed May 8, 2003].
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* ''Encyclopedia Britannica'', http://www.britannica.com  Comment: Aloe" [Accessed May 8, 2003].
  
 
* ''Dictionary of Building Preservation'', Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
 
* ''Dictionary of Building Preservation'', Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996

Revision as of 10:04, 26 April 2022

Fynbos aloe Aloe succotrina

Description

The juice from the Aloe genus of plants characterized by their spiny leaves. Examples of these lily-like plants include: Aloe vera (True aloe or common aloe); Aloe vulgaris (Barbados aloes), A.sinuta, A. socotrina (Socotrine or Bombay aloes), and A. capensis (Cape aloes). Heating the juice produces a thick, dark brown resin that has been used as a varnish to protect gilding. Aloes has also been heated to dryness to produce a brown residue that is ground to form a pigment. It contains barbaloin and small amounts of the C-glycoside of aloe-emodin (White 1986). Aloes was also used as a dye forming a yellowish brown color on wool or pale gray on cotton with an alumina mordant.

Fynbos aloe Aloe succotrina

Synonyms and Related Terms

socotrine aloes; hepatic aloes; Caballine aloes; Aloe vera (True aloe or common aloe); Aloe vulgaris (Barbados aloes); A.sinuta; A. socotrina (Socotrine or Bombay aloes); A. capensis (Cape aloes).

Other Properties

  • Soluble in hot water, alcohol, ether and essential oils.
  • Aloe has a bitter flavor and strong odor.
  • Refractive Index = 1.619

Resources and Citations

  • R.White "Brown and Black Organic Glazes, Pigments and Paints" National Gallery Technical Bulletin, 10:58-71, 1986.
  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 671
  • Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
  • F. Crace-Calvert, Dyeing and Calico Printing, Palmer & Howe, London, 1876 Comment: p.278
  • CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index=1.619

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