Difference between revisions of "British gum"
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== Description == | == Description == | ||
| − | An impure form of [ | + | An impure form of [[dextrin]] prepared from [[starch]] that is hydrolyzed by roasting at 150C (300F) without the use of acid. These high temperatures produce a dark colored dextrin that is used in industry as a paper adhesive. British gum is soluble in warm water and it is typically used in concentrations of 10-35%. British gum gives a reddish-brown color in [[iodine]]. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
Revision as of 12:18, 9 January 2014
Description
An impure form of Dextrin prepared from Starch that is hydrolyzed by roasting at 150C (300F) without the use of acid. These high temperatures produce a dark colored dextrin that is used in industry as a paper adhesive. British gum is soluble in warm water and it is typically used in concentrations of 10-35%. British gum gives a reddish-brown color in Iodine.
Synonyms and Related Terms
starch gum; dextrin; goma de almidón (Esp.); dextrina (Esp.); destrina (It); gomma d'amido (It)
Authority
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 263
- Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
- Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983
- Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000