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Valtcho D. Zheljazkov, Tess Astatkie and Ekaterina Jeliazkova

essential oil (EO) content, and the 12 d starting on Day 35 for the constituents] on EO content and the concentrations of alpha-thujene, alpha-pinene, sabinene, myrcene, alpha-terpinene, limonene, gamma-terpinene, terpinolene, 4-terpineol, pregeijerene B

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Valtcho D. Zheljazkov, Tess Astatkie and Vicki Schlegel

tested in triplicate. Statistical methods. The effect of DT on essential oil content and the concentration and yield of alpha-pinene, beta-pinene, myrcene, delta-3-carene, limonene, cis-ocimene, linalyl anthranilate, alpha-terpinyl acetate, germacrene

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Valtcho D. Zheljazkov, Tess Astatkie and Ekaterina Jeliazkova

and composition. Drying duration had a significant effect on the concentrations of beta-pinene, 4-terpineol, carvone, iso-dihydro carveol acetate, alpha-humulene/transbeta farnesene, and germacrene D regardless of drying condition (no significant

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Valtcho D. Zheljazkov, Tess Astatkie and Vicki Schlegel

-thujene, alpha-pinene, camphene, l-octen-3-ol, myrcene, alpha-terpinene, paracymene, beta-phyllanderene/limonene, gamma-terpinene, cis-sabinene hydrate, terpinolene, transsabinene hydrate, borneol, 4-terpineol, carvacrol, beta-caryophylenne, beta-bisabolene, and

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Valtcho D. Zheljazkov and Tess Astatkie

275 °C. Statistical analysis. The effect of distillation time on essential oil content and the concentration and yield of alpha-pinene, sabinene, beta-pinene, myrcene, 3-octanal, limonene, eucalyptol, isopulegon, menthone, isomenthone, menthol

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Valtcho D. Zheljazkov, Tess Astatkie, Thomas Horgan, Vicki Schlegel and Xavier Simonnet

). Statistical analysis. The effect of DT on essential oil content as well as the concentration and yield of alpha-pinene, camphene, paracymene, eucalyptol, camphor, borneol, beta-caryophyllene, transbeta-farnesene, beta-chamigrene, germacrene-D, gamma

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Michael A. Jordan, Kenneth McRae, Sherry Fillmore and Willy Renderos

Volatile compounds contribute to carrot (Daucus carota) flavor. However, effects of postharvest treatments on these compounds are not defined. To characterize treatment effects, fresh carrots (cv. Sunrise) were treated with 0 or 1.0 μL/L 1-methylcyclopropene (1-MCP) at 10 °C for 16 h, then exposed to 0, 0.3, or 1.0 μL/L ozone (O3) at 10 °C for 1, 2, or 4 days, and subsequently stored at 0 °C for up to 24 weeks. Twelve terpenes were identified in the headspace over whole carrots, including dimethylstyrene (22.5%), alpha-pinene (19.1%), caryophyllene (15.8%), beta-pinene (9.1%), p-cymene (8.3%), limonene (7.7%), gamma-terpinene (6.7%), myrcene (4.7%), gamma-terpinolene (4.5%) camphene (1.0%), alpha-phellandrene (0.52%), and sabinene (0.03%). Most terpenes responded similarly to treatments and storage. Immediately after treatment with 1.0 μL/L O3 for 1, 2, or 4 days, total terpene concentrations were 45%, 85%, and 87% greater than concentrations in non-treated controls. Caryophyllene, beta-pinene, and sabinene did not increase in response to the O3 treatment unlike the other terpenes. 1-MCP reduced terpene concentrations by an average of 18%. O3 treatments also stimulated stress volatile production. Ethanol headspace concentrations were 8-, 21-, and 43-times greater than the nontreated controls immediately following treatments with 0.3 nL/L O3 for 4 days or 1.0 μL/L O3 for 2 or 4 days, respectively. However, after 8 weeks, no differences among treatments were observed. Hexanal production also was stimulated by all O3 treatments, being 2- to 11-times greater than controls immediately following treatment. 1-MCP reduced O3-stimulated ethanol and hexanal production by 23% and 8%, respectively.

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Maedza K. Vuwani, Mpumelelo Nkomo, Wonder Ngezimana, Nokwanda P. Makunga and Fhatuwani N. Mudau

and quantitative because of different mineral applications. Control plants had high levels of 1.8 cineole, alpha furanone, alpha terpinolene, delta 3 carene, delta 4 carene, and o-cymene at a relative abundance of 13.37; 33.33; 13.72; 21.73; 91.27; and

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Valtcho D. Zheljazkov, Tess Astatkie and Ekaterina Jeliazkova

) solution included 0.105 mL in 1 L water. Once prepared, all solutions were stored in a refrigerator at 4 to 5 °C until needed. The sagebrush EO included the following major constituents: alpha-pinene, camphene, eucalyptol, chrysanthenone, transpinocarvone

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Victoria M. Anderson, Douglas D. Archbold, Robert L. Geneve, Dewayne L. Ingram and Krista L. Jacobsen

) flowers produced, which represent predrought and postdrought flowers, respectively. The concentration of α-pinene, a key essential oil in calendula ( Kaskoniene et al., 2011 ), was greatest in Resina and Alpha varieties, although Alpha did not differ