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Polysaccharide remains in Maya mural paintings: is it an evidence of the use of plant gums as binding medium of pigments and additive in the mortar?

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Polysaccharide remains in Maya mural paintings: is it an evidence of the use of plant gums as binding medium of pigments and additive in the mortar?

dc.contributor.author	Guasch-Ferré, Núria
dc.contributor.author	Prada Pérez, José Luis
dc.contributor.author	Vázquez de Ágredos-Pascual, María Luisa
dc.contributor.author	Osete Cortina, Laura
dc.contributor.author	Doménech Carbó, María Teresa
dc.date.accessioned	2021-05-03T11:00:18Z
dc.date.available	2021-05-03T11:00:18Z
dc.date.issued	2020
dc.identifier.citation	Guasch-Ferré, Núria Prada Pérez, José Luis Vázquez de Agredos Pascual, María Luisa Osete Cortina, Laura Doménech Carbó, María Teresa 2020 Polysaccharide remains in Maya mural paintings: is it an evidence of the use of plant gums as binding medium of pigments and additive in the mortar? Science and Technology of Archaeological Research 1 21
dc.identifier.uri	https://hdl.handle.net/10550/79016
dc.description.abstract	A number of monosaccharides characteristic of plant gums were found in paint layers and preparation layers of samples of Maya mural paintings of 10 archaeological sites located in Campeche and Yucatan regions. This finding opens the question about the deliberate use of these organic polymers as additives for improving workability and mechanical properties in the preparation layer mortar and conferring cohesion to the pigments in the paint layer. The study performed by GC-MS has confirmed the presence, in significant amounts, of a series of monosaccharides, being glucose and mannose between the most abundantly found. Nevertheless, the low amount present in most of the samples hindered the quantification of the relative proportion of monosaccharides necessary for identifying the botanical species of the plant gum. According to the accepted methodology used by Maya artists for preparing painting materials, bark of trees containing plant gums was added to the slaked lime stored in pools and that should be consistent with the notable amounts of glucose, mannose and other monosaccharides forming the skeleton of hemicelluloses and cellulose found in most of the samples. Although organic matter can be present in paint samples exposed to the external environment in Mesoamerican region as result of the microbiological activity, marker compounds characteristic of products resulting from their metabolism were not found in the studied samples
dc.language.iso	eng
dc.relation.ispartof	Science and Technology of Archaeological Research, 2020, p. 1-21
dc.subject	Pintura rupestre
dc.title	Polysaccharide remains in Maya mural paintings: is it an evidence of the use of plant gums as binding medium of pigments and additive in the mortar?
dc.type	journal article	es_ES
dc.date.updated	2021-05-03T11:00:19Z
dc.identifier.doi	10.1080/20548923.2020.1720377
dc.identifier.idgrec	146693
dc.rights.accessRights	open access	es_ES