Dry and wet seasons set the phytochemical profile of the<i>Copaifera langsdorffii</i>Desf. essential oils

Almeida, Luiz Fernando Rolim de; Portella, Roberto de Oliveira; Facanali, Roselaine; Marques, Márcia Ortiz Mayo; Frei, Fernando

doi:10.1080/10412905.2014.889050

Cited by 15 publications

(2 citation statements)

References 30 publications

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“…18 α-Thujene is emitted in small quantities by vegetation 23,24 but is a major component of essential oils used in perfumes, incense, and other household products. 25 One experimental study found that SOA was generated from ozonolysis of a mixture of monoterpenes containing α-thujene sampled from the headspace of a cabbage under various MT:O 3 ratios. 26 To date, no studies exist that probe the detailed composition of gas-phase oxidized reaction products or SOA from α-thujene ozonolysis.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Additionally, following the mechanism suggested by Iyer et al, the resulting RO 2 molecules formed in step R6 (Scheme ) are structural isomers, which may lead to the availability of unique hydrogen shift pathways based on the location of the RO 2 functional groups on the carbon chains . α-Thujene is emitted in small quantities by vegetation , but is a major component of essential oils used in perfumes, incense, and other household products . One experimental study found that SOA was generated from ozonolysis of a mixture of monoterpenes containing α-thujene sampled from the headspace of a cabbage under various MT:O 3 ratios .…”

Section: Introductionmentioning

confidence: 99%

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Formation of Highly Oxidized Organic Compounds and Secondary Organic Aerosol from α-Thujene Ozonolysis

Dam,

Thomas,

Smith

2023

J. Phys. Chem. A

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We conducted laboratory chamber experiments to probe the gas-and particle-phase composition of oxidized organics and secondary organic aerosol (SOA) formed from α-thujene ozonolysis under different chemical regimes. The formation of lowvolatility compounds was observed using chemical ionization mass spectrometry with nitrate (NO 3 − ) and iodide (I − ) reagent ions. The contribution of measured low-volatility compounds to particle growth was predicted using a simple condensational growth model and found to underpredict the measured growth rates in our chamber (on the order of several nm min −1 ). The yields of lowvolatility compounds and SOA mass were similar to those of other monoterpene ozonolysis systems. While semivolatile compounds C 10 H 14−16 O 3−7 were measured most abundantly with I − reagent ion, a large fraction of products measured with NO 3 − were C 5−7 fragments with predicted intermediate volatility. Additionally, particle composition was measured with ultrahigh-performance liquid chromatography with high-resolution mass spectrometry and compared to particle composition from α-pinene ozonolysis. Structural isomers were identified from tandem mass spectrometry analysis of two abundant product ions (C 8 H 13 O 5 − , C 19 H 27 O 7 − ). Our results indicate that although this system efficiently generates low-volatility organics and SOA under the conditions studied, fragmentation pathways that produce more highly volatile products effectively compete with these processes.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Formation of Highly Oxidized Organic Compounds and Secondary Organic Aerosol from α-Thujene Ozonolysis

Dam,

Thomas,

Smith

2023

J. Phys. Chem. A

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Variation in oleoresin yield and anatomical traits among Sindora glabra populations in Hainan, China

Yang

et al. 2020

Trees

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Key message Geography and tree diameter were the major factors in determining oleoresin yield in Sindora glabra. The tangential diameter and area of secretory canals are reliable indicators of the oleoresin amount. Abstract Sindora glabra is a native tropical plant of China that exudes copious amounts of oleoresin from wounds on the stem. Elucidation of the mechanism affecting the oleoresin yield is of particular importance for development and selection of superior germplasm. In this study, the variation in oleoresin yield and anatomical traits of the stem of S. glabra were investigated in four main natural populations in Hainan. The results showed that annual oleoresin yield varied considerably among populations. The oleoresin yield exhibited an increasing trend with the increment of tree stem diameter until the diameter was over 80 cm. Moreover, oleoresin production in the wet season was higher than in dry season. The analysis of oleoresin chemical composition indicated that the four populations belong to the same chemotype despite the amount of four types of sesquiterpenes varying greatly among areas. Anatomical analysis revealed that quantitative traits of secretory canals including tangential diameter, area, density and frequency were significantly different among populations and tree diameters. Furthermore, the tangential diameter and area of secretory canals were positively correlated with oleoresin yield. These results suggested that the tangential diameter and area of secretory canals are reliable indicators of the oleoresin amount and can be used for selection purposes in S. glabra.

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Anatomical and ultrastructural studies reveal temporal and spatial variation in the oil production in leaves of the diesel tree (Copaifera langsdorffii, Leguminosae)

2020

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Dry and wet seasons set the phytochemical profile of theCopaifera langsdorffiiDesf. essential oils

Cited by 15 publications

References 30 publications

Formation of Highly Oxidized Organic Compounds and Secondary Organic Aerosol from α-Thujene Ozonolysis

Formation of Highly Oxidized Organic Compounds and Secondary Organic Aerosol from α-Thujene Ozonolysis

Variation in oleoresin yield and anatomical traits among Sindora glabra populations in Hainan, China

Anatomical and ultrastructural studies reveal temporal and spatial variation in the oil production in leaves of the diesel tree (Copaifera langsdorffii, Leguminosae)

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