Analytical characterization of diterpenoid resins present in pictorial varnishes using pyrolysis–gas chromatography–mass spectrometry with on line trimethylsilylation

Osete-Cortina, Laura; Doménech‐Carbó, María Teresa

doi:10.1016/j.chroma.2004.12.078

Cited by 96 publications

(53 citation statements)

References 22 publications

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“…Spectroscopic studies performed to date including Pyrolysis coupled to GC/MS (Py-GC/MS) [14][15][16][17][18], Fourier Transform Infrared (FTIR) Spectroscopy [19][20][21][22][23][24][25] and Raman Spectroscopy [26][27][28][29] among other techniques [30] have been focused on the identification of the Pinus resin by determining its characteristic footprints. Nevertheless, a spectroscopic study of the ageing process is expected to give very valuable additional information since, unlike GC/MS, it can detect macromolecules and it doesn't require any sample treatment such as dissolving or derivatization, to identify how molecular species are organized and which reactions or interactions exist among them.…”

Section: Introductionmentioning

confidence: 99%

Ageing of resin from Pinus species assessed by infrared spectroscopy

et al. 2016

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Resins obtained from Pinus genus species have been widely used in very different fields throughout history. As soon as they are secreted molecular changes start altering their chemical, mechanical and optical properties. The ageing processes are complex and chemical and structural changes associated to resin degradation are not yet fully known. Many questions still remain open, for instance changes happening in pimaranes, one of the two diterpenoid constituents of the resin.A systematic study of the ageing process of Pinus resins is done through of Fourier Transform Infrared Spectroscopy (FTIR) using chemical standards and complementing obtained results with Gas Chromatography coupled to Mass Spectrometry (GC/MS) analysis when necessary. Moreover, long-term degradation processes are also investigated through the analysis of a selection of dated historical resins. The study overcomes the limitations of GC/MS and brings new information about the reactions and interactions between molecules during Pinus resin ageing process, providing information about bonds affected and unaffected and can be used as specific markers of the degradation and of the resins themselves.

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Section: Introductionmentioning

confidence: 99%

Ageing of resin from Pinus species assessed by infrared spectroscopy

et al. 2016

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“…Canada balsam is another oleoresin, which comes from a Pinaceae called Abies balsamea, in a clear reference to its aromatic mono-and sesquiterpenes (Lee et al, 1974). Oleoresins have been used as a varnish in paintings since ancient times, in various civilizations, such as the Persian, Indian, Chinese and Greek (Osete-Cortina & Doménech-Carbó, 2005). In the renaissance period, Copaiba Oil and Canada balsam were used by many artists, such as Cenino Cennini and Leonardo da Vinci, who described the process of varnish preparation, in which the resin was melted to obtain a clear liquid, and then poured into hot drying oil (Osete-Cortina & Doménech-Carbó, 2006).…”

Section: Introductionmentioning

confidence: 99%

True and common balsams

Custódio¹,

Veiga²

2012

Rev. bras. farmacogn.

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“…Analytical studies have been done which not only deal with the characterization of the resins but also with their photochemical or thermal degradation. They have been performed by means of gas chromatography-mass spectrometry (GC-MS) [15,[19][20][21][22][23], pyrolysis-GC-MS (Py-GC-MS) [24], thermally assisted hydrolysis and methylation-Py-GC-MS (THM-Py-GC-MS) [25][26][27][28][29] and online trimethylsilylation Py-GC-MS [17,[30][31][32].…”

Section: Introductionmentioning

confidence: 99%