Egg yolk - Revision history

MDerrick: /* Resources and Citations */

2020-08-16T18:35:50Z

Resources and Citations

← Older revision		Revision as of 14:35, 16 August 2020
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	== Resources and Citations ==		== Resources and Citations ==

			* John S. Mills, Raymond White, ''The Organic Chemistry of Museum Objects'', Butterworth Heineman, London, 2nd ed., 1994.

	* R. J. Gettens and G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966.		* R. J. Gettens and G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966.

	* John S. Mills, Raymond White, ''The Organic Chemistry of Museum Objects'', Butterworth Heineman, London, 2nd ed., 1994.

	* Hermann Kuhn, ''Conservation and Restoration of Works of Art and Antiquities'', Butterworths, London, 1986		* Hermann Kuhn, ''Conservation and Restoration of Works of Art and Antiquities'', Butterworths, London, 1986

MDerrick: /* Resources and Citations */

2020-08-16T18:35:22Z

Resources and Citations

← Older revision		Revision as of 14:35, 16 August 2020
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	* R. J. Gettens and G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966.		* R. J. Gettens and G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966.

			* John S. Mills, Raymond White, ''The Organic Chemistry of Museum Objects'', Butterworth Heineman, London, 2nd ed., 1994.

	* Hermann Kuhn, ''Conservation and Restoration of Works of Art and Antiquities'', Butterworths, London, 1986		* Hermann Kuhn, ''Conservation and Restoration of Works of Art and Antiquities'', Butterworths, London, 1986

	* John S. Mills, Raymond White, ''The Organic Chemistry of Museum Objects'', Butterworth Heineman, London, 2nd ed., 1994

	* ''Encyclopedia Britannica'', http://www.britannica.com Comment: "Yolk." [Accessed 14 Apr. 2004].		* ''Encyclopedia Britannica'', http://www.britannica.com Comment: "Yolk." [Accessed 14 Apr. 2004].

MDerrick at 18:34, 16 August 2020

2020-08-16T18:34:47Z

← Older revision		Revision as of 14:34, 16 August 2020
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	[[[SliderGallery rightalign\|MFA- Egg yolk (partially dried).jpg~FTIR]]]		[[[SliderGallery rightalign\|MFA- Egg yolk (partially dried).jpg~FTIR]]]

	== ~~Other~~ Properties ==		== Physical and Chemical Properties ==

	Soluble in water after drying. Insoluble in water after heating.		* Soluble in water after drying.
			* Insoluble in water after heating.

	== ~~Additional Information~~ ==		== Resources and Citations ==

	~~° J.S. Mills, R.White, ''The Organic Chemistry of Museum Objects'', Butterworth Heinemann, London, 1994.~~		* R. J. Gettens and G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966.

	° R. J. Gettens and G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966.

	~~== Sources Checked for Data in Record ==~~

	* R. J. Gettens, G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966

	* Hermann Kuhn, ''Conservation and Restoration of Works of Art and Antiquities'', Butterworths, London, 1986		* Hermann Kuhn, ''Conservation and Restoration of Works of Art and Antiquities'', Butterworths, London, 1986
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	* John S. Mills, Raymond White, ''The Organic Chemistry of Museum Objects'', Butterworth Heineman, London, 2nd ed., 1994		* John S. Mills, Raymond White, ''The Organic Chemistry of Museum Objects'', Butterworth Heineman, London, 2nd ed., 1994

	* ''Encyclopedia Britannica'', http://www.britannica.com Comment: "Yolk." ~~Encyclopædia Britannica. 2004. Encyclopædia Britannica Premium Service.~~ 14 Apr. 2004 .		* ''Encyclopedia Britannica'', http://www.britannica.com Comment: "Yolk." [Accessed 14 Apr. 2004].



	[[Category:Materials database]]		[[Category:Materials database]]

Jruggiero: Text replace - "== Authority ==" to "== Sources Checked for Data in Record =="

2016-05-01T02:04:21Z

Text replace - "== Authority ==" to "== Sources Checked for Data in Record =="

← Older revision		Revision as of 22:04, 30 April 2016
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	° R. J. Gettens and G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966.		° R. J. Gettens and G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966.

	== ~~Authority~~ ==		== Sources Checked for Data in Record ==

	* R. J. Gettens, G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966		* R. J. Gettens, G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966

GEthier: /* Additional Information */

2014-01-15T00:32:19Z

Additional Information

← Older revision		Revision as of 20:32, 14 January 2014
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	== Additional Information ==		== Additional Information ==

	° J.S. Mills, R.White, ''The Organic Chemistry of Museum Objects'', Butterworth Heinemann, London, 1994. ° R. J. Gettens and G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966.		° J.S. Mills, R.White, ''The Organic Chemistry of Museum Objects'', Butterworth Heinemann, London, 1994.

			° R. J. Gettens and G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966.

	== Authority ==		== Authority ==

GEthier: /* Description */

2014-01-15T00:32:09Z

Description

← Older revision		Revision as of 20:32, 14 January 2014
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	== Description ==		== Description ==

	The interior yellow, spherical portion of a bird [~~http://cameo.mfa.org/materials/fullrecord.asp?name=egg~~ egg]. The yolk from a hen egg is composed of about 50% [~~http://cameo.mfa.org/materials/fullrecord.asp?name=water~~ water], 15% [~~http://cameo.mfa.org/materials/fullrecord.asp?name=protein~~ protein], 22% [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~lipid lipids], 9% [~~http://cameo.mfa.org/materials/fullrecord.asp?name=lecithin~~ lecithin] and 3% other materials. The distribution of major [~~http://cameo.mfa.org/materials/fullrecord.asp?name=~~amino~~%20acid~~ amino acids] is: [~~http://cameo.mfa.org/materials/fullrecord.asp?name=glutamic%20acid~~ glutamic acid] (15.0%), aspartic acid (11.5%), [~~http://cameo.mfa.org/materials/fullrecord.asp?name=leucine~~ leucine] (9.2%), [~~http://cameo.mfa.org/materials/fullrecord.asp?name=lysine~~ lysine] (5.7%), valine (6.4%), arginine (5.5%), [~~http://cameo.mfa.org/materials/fullrecord.asp?name=alanine~~ alanine] (5.6%), isoleucine (5.1%) and serine (9.1%) with no measurable amounts of [~~http://cameo.mfa.org/materials/fullrecord.asp?name=hydroxyproline~~ hydroxyproline] (Mills and White 1994). Egg yolk is a natural emulsion that dries into a strong, water-insoluble film, first by the evaporation of water, then by the hardening of the lipids (Gettens and Stout, 1966). When used traditionally as a paint medium, the pure egg yolk is carefully separately from the egg white, then rolled back and forth in the hands to dry the surface of the sac. The sac is pierced to release its contents which are then ground with pigments. Vinegar was sometimes added as a preservative.		The interior yellow, spherical portion of a bird [[egg]]. The yolk from a hen egg is composed of about 50% [[water]], 15% [[protein]], 22% [[lipid\|lipids]], 9% [[lecithin]] and 3% other materials. The distribution of major [[amino acid\|amino acids]] is: [[glutamic acid]] (15.0%), aspartic acid (11.5%), [[leucine]] (9.2%), [[lysine]] (5.7%), valine (6.4%), arginine (5.5%), [[alanine]] (5.6%), isoleucine (5.1%) and serine (9.1%) with no measurable amounts of [[hydroxyproline]] (Mills and White 1994). Egg yolk is a natural emulsion that dries into a strong, water-insoluble film, first by the evaporation of water, then by the hardening of the lipids (Gettens and Stout, 1966). When used traditionally as a paint medium, the pure egg yolk is carefully separately from the egg white, then rolled back and forth in the hands to dry the surface of the sac. The sac is pierced to release its contents which are then ground with pigments. Vinegar was sometimes added as a preservative.

	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==

Unknown user at 12:29, 24 July 2013

2013-07-24T12:29:59Z

← Older revision		Revision as of 08:29, 24 July 2013
Line 1:		Line 1:
	== Description ==		== Description ==

	The interior yellow, spherical portion of a bird [http://cameo.mfa.org/materials/fullrecord.asp?name=egg egg]. The yolk from a hen egg is composed of about 50% [http://cameo.mfa.org/materials/fullrecord.asp?name=water water], 15% [http://cameo.mfa.org/materials/fullrecord.asp?name=protein protein], 22% [http://cameo.mfa.org/materials/fullrecord.asp?name=lipid lipids], 9% [http://cameo.mfa.org/materials/fullrecord.asp?name=lecithin lecithin] and 3% other materials. The distribution of major [http://cameo.mfa.org/materials/fullrecord.asp?name=amino ~~acid~~ amino acids] is: [http://cameo.mfa.org/materials/fullrecord.asp?name=glutamic ~~acid~~ glutamic acid] (15.0%), aspartic acid (11.5%), [http://cameo.mfa.org/materials/fullrecord.asp?name=leucine leucine] (9.2%), [http://cameo.mfa.org/materials/fullrecord.asp?name=lysine lysine] (5.7%), valine (6.4%), arginine (5.5%), [http://cameo.mfa.org/materials/fullrecord.asp?name=alanine alanine] (5.6%), isoleucine (5.1%) and serine (9.1%) with no measurable amounts of [http://cameo.mfa.org/materials/fullrecord.asp?name=hydroxyproline hydroxyproline] (Mills and White 1994). Egg yolk is a natural emulsion that dries into a strong, water-insoluble film, first by the evaporation of water, then by the hardening of the lipids (Gettens and Stout, 1966). When used traditionally as a paint medium, the pure egg yolk is carefully separately from the egg white, then rolled back and forth in the hands to dry the surface of the sac. The sac is pierced to release its contents which are then ground with pigments. Vinegar was sometimes added as a preservative.		The interior yellow, spherical portion of a bird [http://cameo.mfa.org/materials/fullrecord.asp?name=egg egg]. The yolk from a hen egg is composed of about 50% [http://cameo.mfa.org/materials/fullrecord.asp?name=water water], 15% [http://cameo.mfa.org/materials/fullrecord.asp?name=protein protein], 22% [http://cameo.mfa.org/materials/fullrecord.asp?name=lipid lipids], 9% [http://cameo.mfa.org/materials/fullrecord.asp?name=lecithin lecithin] and 3% other materials. The distribution of major [http://cameo.mfa.org/materials/fullrecord.asp?name=amino%20acid amino acids] is: [http://cameo.mfa.org/materials/fullrecord.asp?name=glutamic%20acid glutamic acid] (15.0%), aspartic acid (11.5%), [http://cameo.mfa.org/materials/fullrecord.asp?name=leucine leucine] (9.2%), [http://cameo.mfa.org/materials/fullrecord.asp?name=lysine lysine] (5.7%), valine (6.4%), arginine (5.5%), [http://cameo.mfa.org/materials/fullrecord.asp?name=alanine alanine] (5.6%), isoleucine (5.1%) and serine (9.1%) with no measurable amounts of [http://cameo.mfa.org/materials/fullrecord.asp?name=hydroxyproline hydroxyproline] (Mills and White 1994). Egg yolk is a natural emulsion that dries into a strong, water-insoluble film, first by the evaporation of water, then by the hardening of the lipids (Gettens and Stout, 1966). When used traditionally as a paint medium, the pure egg yolk is carefully separately from the egg white, then rolled back and forth in the hands to dry the surface of the sac. The sac is pierced to release its contents which are then ground with pigments. Vinegar was sometimes added as a preservative.

	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==
Line 15:		Line 15:
	== Additional Information ==		== Additional Information ==

	J.S. Mills, R.White, ''The Organic Chemistry of Museum Objects'', Butterworth Heinemann, London, 1994. R. J. Gettens and G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966.		° J.S. Mills, R.White, ''The Organic Chemistry of Museum Objects'', Butterworth Heinemann, London, 1994. ° R. J. Gettens and G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966.

	== Authority ==		== Authority ==

	* ~~R. J. Gettens, G.L. Stout,~~ R. J. Gettens, G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966		* R. J. Gettens, G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966

	* ~~Hermann Kuhn,~~ Hermann Kuhn, ''Conservation and Restoration of Works of Art and Antiquities'', Butterworths, London, 1986		* Hermann Kuhn, ''Conservation and Restoration of Works of Art and Antiquities'', Butterworths, London, 1986

	* ~~John S. Mills, Raymond White,~~ John S. Mills, Raymond White, ''The Organic Chemistry of Museum Objects'', Butterworth Heineman, London, 2nd ed., 1994		* John S. Mills, Raymond White, ''The Organic Chemistry of Museum Objects'', Butterworth Heineman, London, 2nd ed., 1994

	* ''Encyclopedia Britannica'', http://www.britannica.com Comment: "Yolk." ~~Encyclopdia~~ Britannica. 2004. ~~Encyclopdia~~ Britannica Premium Service. 14 Apr. 2004 .		* ''Encyclopedia Britannica'', http://www.britannica.com Comment: "Yolk." Encyclopædia Britannica. 2004. Encyclopædia Britannica Premium Service. 14 Apr. 2004 .



	[[Category:Materials database]]		[[Category:Materials database]]

Unknown user at 18:08, 27 April 2013

2013-04-27T18:08:04Z

New page

== Description ==

The interior yellow, spherical portion of a bird [http://cameo.mfa.org/materials/fullrecord.asp?name=egg egg]. The yolk from a hen egg is composed of about 50% [http://cameo.mfa.org/materials/fullrecord.asp?name=water water], 15% [http://cameo.mfa.org/materials/fullrecord.asp?name=protein protein], 22% [http://cameo.mfa.org/materials/fullrecord.asp?name=lipid lipids], 9% [http://cameo.mfa.org/materials/fullrecord.asp?name=lecithin lecithin] and 3% other materials. The distribution of major [http://cameo.mfa.org/materials/fullrecord.asp?name=amino acid amino acids] is: [http://cameo.mfa.org/materials/fullrecord.asp?name=glutamic acid glutamic acid] (15.0%), aspartic acid (11.5%), [http://cameo.mfa.org/materials/fullrecord.asp?name=leucine leucine] (9.2%), [http://cameo.mfa.org/materials/fullrecord.asp?name=lysine lysine] (5.7%), valine (6.4%), arginine (5.5%), [http://cameo.mfa.org/materials/fullrecord.asp?name=alanine alanine] (5.6%), isoleucine (5.1%) and serine (9.1%) with no measurable amounts of [http://cameo.mfa.org/materials/fullrecord.asp?name=hydroxyproline hydroxyproline] (Mills and White 1994). Egg yolk is a natural emulsion that dries into a strong, water-insoluble film, first by the evaporation of water, then by the hardening of the lipids (Gettens and Stout, 1966). When used traditionally as a paint medium, the pure egg yolk is carefully separately from the egg white, then rolled back and forth in the hands to dry the surface of the sac. The sac is pierced to release its contents which are then ground with pigments. Vinegar was sometimes added as a preservative.

== Synonyms and Related Terms ==

deutoplasm

[[[SliderGallery rightalign|MFA- Egg yolk (partially dried).jpg~FTIR]]]

== Other Properties ==

Soluble in water after drying. Insoluble in water after heating.

== Additional Information ==

J.S. Mills, R.White, ''The Organic Chemistry of Museum Objects'', Butterworth Heinemann, London, 1994. R. J. Gettens and G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966.

== Authority ==

* R. J. Gettens, G.L. Stout, R. J. Gettens, G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966

* Hermann Kuhn, Hermann Kuhn, ''Conservation and Restoration of Works of Art and Antiquities'', Butterworths, London, 1986

* John S. Mills, Raymond White, John S. Mills, Raymond White, ''The Organic Chemistry of Museum Objects'', Butterworth Heineman, London, 2nd ed., 1994

* ''Encyclopedia Britannica'', http://www.britannica.com Comment: "Yolk." Encyclopdia Britannica. 2004. Encyclopdia Britannica Premium Service. 14 Apr. 2004 .

[[Category:Materials database]]