Characterisation of the condensate generated from vacuum-drying of radiata pine wood

McDonald, A. G.; Gifford, John S.; Dare, P. H.; Steward, Diane

doi:10.1007/s001070050052

Cited by 18 publications

(13 citation statements)

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“…Subsequently, other authors have reported this product in resins and/or essential oils from Callitris [ 23 ], various Juniperis (Cupressaceae) species [ 23 - 30 ], and a number of non-conifers including Salvia [ 31 ], (although from the MS data reported by these authors it seems likely that the products observed are actually dehydroabiatic acid ( IXa ) and methyl dehydroabietate ( IXb )), Caleolaria [ 32 , 33 ], Rabdosia [ 34 ], and the Rosaceae [ 35 , 36 ]. Callitrisate ( X ) has also been reported in thermally modified products derived from Pinus [ 37 , 38 ] but was not reported in analyses of unmodified resins from these species [ 39 , 40 ], so it is likely that these reports reflect secondary products rather than primary resin components. Other workers [ 11 , 41 ] have noted that reporting of compounds present in oleoresins from is often incomplete, but based on presently available data, it appears that occurrence of callitrisate ( X ) in modern conifer resins is limited to the Cupressaceae.…”

Section: Resultsmentioning

confidence: 99%

The nature and fate of natural resins in the geosphere. XII. Investigation of C-ring aromatic diterpenoids in Raritan amber by pyrolysis-GC-matrix isolation FTIR-MS

Anderson

2006

Geochem Trans

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Upper Cretaceous amber from the Raritan Formation (Sayerville, New Jersey) has been investigated by Pyrolysis-GC-MS and Pyrolysis-GC-matrix isolation FTIR-MS. Results establish the existence of two distinct forms of amber in this deposit. Both forms are Class Ib ambers, but they are unambiguously differentiated on the basis of their (intact) diterpenoid composition. The presence of callitrisate in both forms, and cupraene in samples designated form 1, strongly suggest that both derive from related-but-distinct species within the Cupressaceae.In addition to callitrisate, dehydroabietate and analogous 17-nor-, 16,17-dinor-and 15,16,17-trinoranalogues of these compounds are also observed. The distributions of these products in multiple samples suggest that they are the result of biological emplacement, rather than diagenetic modification of the parent compounds. This indicates that the distributions of diterpenes observed in these samples are representative of the original bioterpenoids and, hence, are useful for chemotaxonomic analyses.

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Section: Resultsmentioning

confidence: 99%

The nature and fate of natural resins in the geosphere. XII. Investigation of C-ring aromatic diterpenoids in Raritan amber by pyrolysis-GC-matrix isolation FTIR-MS

Anderson

2006

Geochem Trans

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“…Callitrisate has been reported to be a thermal product of Pinaceae (Garcia Vallejo et al, 1994;McDonald et al, 1999) but was not reported in analyses of unmodified resins from these conifers (see Anderson, 2006). Callitrisates in modern resins have been associated with Cupressaceae conifers (Anderson, 2006).…”

Section: Chemotaxonomy Of Resinsmentioning

confidence: 95%

Terpenoid composition and botanical affinity of Cretaceous resins from India and Myanmar

Dutta

Mallick

Kumar

et al. 2011

International Journal of Coal Geology

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“…Dry air concentration (at 0°C basis) of VOC from subsampled air samples and VOC levels in green timber and kiln dried timber from drying radiata pine in a commercial kiln Tabelle 3. Konzentration an flüchtigen organischen Stoffen (VOC) in verschiedenen Abluftproben beim Trocknen von P. radiata in einem kommerziellen Trockner sowie Konzentrationen in waldfrischem und getrocknetem Holz McDonald et al 1999b). These results indicate that there is substantial variation in the measured levels of total VOC being emitted from kilns.…”

Section: Volatile Organic Compounds Released During Dryingmentioning

confidence: 99%

Assessment of air emissions from industrial kiln drying of Pinus radiata wood

McDonald¹,

Dare²,

Gifford³

et al. 2002

Holz als Roh- und Werkstoff

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The nature and mass flows of atmospheric emissions from an industrial kiln, drying radiata pine (Pinus radiata D. Don) at 100°C dry bulb and 70°C wet bulb, were assessed by measuring the concentration of chemical components in the kiln atmosphere at regular time intervals and determining air-flows and temperature differentials across the stack. The volatile organic compounds (VOC) were trapped on activated carbon and analyzed by GC-MS. The aldehydes were trapped in 2,4-dinitrophenol-hydrazine solution and the aldehyde derivatives analysed by HPLC. Polar compounds were trapped in water and then alcohols were analysed by GC and organic acids by ion exchange chromatography. The two major VOC found were a-pinene and b-pinene, which made up 90% of the total discharge (405 g/m 3 wood). Most of the VOC fraction was released during the early stages of drying. The release of potentially hazardous components (formaldehyde, acetaldehyde, furfural) was found to be relatively low (1.1, 8.7, and 0.1 g/m 3 wood, respectively) provided the kiln emissions are well dispersed, these levels of release are unlikely to cause adverse environmental effects. Abschätzen der Luftemissionen beim industriellen Trocknen von KiefernholzArt und Menge der gasförmigen Emissionen während des industriellen Trocknens von Kiefernholz (P. radiata D. Don) wurden abgeschätzt. Die Trockentemperatur betrug 100°C, die Feuchttemperatur 70°C. Chemische Komponenten in der Ofenluft wurden in regelmäßigen Zeitintervallen gemessen sowie die Luftbewegungen und Temperaturdifferenzen innerhalb des Holzstapels bestimmt. Die flüchtigen organischen Bestandteile (VOC) wurden an Aktivkohle adsorbiert und mittels GC-MS analysiert. Aldehyde wurden in Lösungen von 2,4-Dinitrohydrazin aufgefangen und die entsprechenden Aldehydderivate mittels HPLC analysiert. Polare Komponenten wurden in Wasser absorbiert, wonach die Alkohole mittels GC und die organischen Säuren mit Ionenaustauschern aufgetrennt wurden. Die Hauptkomponenten der VOC waren Alpha-und Beta-Pinen, die zusammen 90% des Massenverlustes (405 g/m 3 Holz) ausmachten. Die Hauptmenge wurde im frühen Trockungsstadium freigesetzt. Die Freisetzung von eventuell schädlichen Komponenten war relativ gering (Formaldehyd 1,1 g/m 3 , Acetaldehyd 8,7 g/m 3 und Furfural 0,1 g/m 3 ). Wenn die Ofenabluft gut verdünnt ist, sollten diese Mengen kaum Umweltschäden verursachen.

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Characterisation of the condensate generated from vacuum-drying of radiata pine wood

Cited by 18 publications

References 0 publications

The nature and fate of natural resins in the geosphere. XII. Investigation of C-ring aromatic diterpenoids in Raritan amber by pyrolysis-GC-matrix isolation FTIR-MS

The nature and fate of natural resins in the geosphere. XII. Investigation of C-ring aromatic diterpenoids in Raritan amber by pyrolysis-GC-matrix isolation FTIR-MS

Terpenoid composition and botanical affinity of Cretaceous resins from India and Myanmar

Assessment of air emissions from industrial kiln drying of Pinus radiata wood

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