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Art/Literary - Materials (Plastics, Ceramics, etc.) / peritaje artístico - materiales usados en pinturas | | English term or phrase: fruit tree gum | This paper presents an analytical GC–MS procedure to study the chemical composition of plant gums, determining aldoses and uronic acids in one step. The procedure is based on the silylation of aldoses and uronic acids, released from plant gums by microwave assisted hydrolysis, and previously converted into the corresponding diethyl-dithioacetals and diethyl-dithioacetal lactones. Using this method only one peak for each compound is obtained, thus providing simple and highly reproducible chromatograms. The analytical procedure was optimised using reference samples of raw plant gums (arabic, karaya, ghatti, guar, locust bean and tragacanth, cherry, plum and peach gums), commercial watercolours and paint layers prepared according to ancient recipes at the Opificio delle Pietre Dure of Florence (Italy). To identify gum media in samples of unknown composition, a decisional schema for the gum identification and the principal component analysis of the relative sugar percentage contents were employed. The procedure was used to study samples collected from wall paintings from Macedonian tombs (4th–3rd centuries bc) and from the Mycenaean “Palace of Nestor” (13th century bc) in Pylos, Greece. The presence of carbohydrates was ascertained and plant gum binders (fruit and a mixture of tragacanth and fruit tree gums) were identified in some of the samples.
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Estoy con los tipos de gomas:
goma arábiga
tragacanto
karaya
ghatti
...
Esta "fruit tree gum", ¿es sencillamente "goma de frutales", o "goma de árboles frutales"..., o existe alguna otra traducción usual en español? ¡Gracias! |
| | | Selected response from:
  Esbed Cavazos
Local time: 09:47
| Grading comment | 4 KudoZ points were awarded for this answer |
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| Discussion entries: 0 |
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Automatic update in 00:
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27 mins confidence:  
25 mins peer agreement (net): +1 |
| Reference: gomas vegetales de árboles frutales
Reference information:
Materiales, procedimientos y técnicas pictóricas -
Antoni Pedrola i Font - 2004 - 222 pages
Temple de goma Las gomas son de origen vegetal y se obtienen de las secreciones de ciertas plantas. ... y la de algunos árboles frutales, como el cerezo, ...
books.google.com/books?isbn=8434467267
La química en la restauración: los materiales del arte pictórico -
Mauro Matteini, Arcangelo Moles - 2001 - 508 pages
Las gomas vegetales más utilizadas en la pintura artística son las siguientes: ... Es el nombre genérico de las secreciones de distintos árboles frutales. ...
books.google.com/books?isbn=8489569541
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Note added at 32 mins (2011-01-21 19:04:41 GMT)
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Plagas y enfermedades de los frutales de hueso -
Joseph M. Ogawa, E. I. Zehr, American Phytopathological Society - 2000 - 97 pages
Exudado gomoso Las gomas y mucílagos son carbohidratos complejos producidos por las hojas, ramas y frutos de varias especies de frutales de hueso. ...
books.google.com/books?isbn=8471149176
| andres-larsen
Venezuela
Native speaker of:  English
PRO pts in category: 4
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| Changes made by editors |
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| Jan 21, 2011 - Changes made by Fabio Descalzi: | | Field (specific) | Art, Arts & Crafts, Painting => Materials (Plastics, Ceramics, etc.) | | Field (write-in) | peritaje artístico => peritaje artístico - materiales usados en pinturas |
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