<?xml version="1.0" encoding="utf-8"?><Thesaurus
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	xsi:schemaLocation="http://schemas.bs8723.org/XmlSchema/DD8723-5.xsd">	 <dc:identifier>http://AATesaurus.cultura.gencat.cat/aat/getty_en</dc:identifier>  <dc:title>Tesaurus d&apos;Art i Arquitectura</dc:title>  <dc:creator>Getty Institute</dc:creator>  <dc:subject></dc:subject>  <dc:description><![CDATA[  ]]></dc:description>  <dc:publisher>Getty Institute</dc:publisher>  <dc:date>0000-00-00</dc:date>  <dc:language>en</dc:language><ThesaurusConcept dc:identifier="http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31316737">	<dcterms:created>2026-03-30 20:25:17</dcterms:created><PreferredTerm dc:identifier="http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31316737" xml:lang="en">	<LexicalValue>chitosan</LexicalValue>	<dcterms:created>2026-03-30 20:25:17</dcterms:created></PreferredTerm><ScopeNote xml:lang="en">  <LexicalValue><![CDATA[ Chitosan is the deacetylated form of chitin, the chief component in the exoskeletons of crustaceans, insects, and beetles. It is used in horticulture and agriculture as a biopesticide, and plant growth enhancer; and in medicine as a coagulant. As a sprayed coating, cyanoethylated chitosan is used to protect historic paper material. Chitosan is also found as an organic component incorporated into polymer materials to form a self-healing coating which promises to render the painted surfaces it is applied to scratch-free. ]]></LexicalValue></ScopeNote><HasHierRelConcept Role="BT">http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31303905</HasHierRelConcept><HasHierRelConcept Role="NT">http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31340183</HasHierRelConcept></ThesaurusConcept></Thesaurus>