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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 Ekaterina Jeliazkova

constituents) by retention time and also using mass spectroscopy (MS). The constituents identified on MS were beta-pinene, myrcene, limonene, eucalyptol, cis-sabinene hydrate, 4-terpineol, cis-dihydro carvone, cis-carveol, carvone, iso-dihydro carveol acetate

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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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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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Valtcho D. Zheljazkov, Tess Astatkie and Ekaterina Jeliazkova

, camphor, fragranol, transalpha-necrodol-acetate, grandisol, and the following minor (below 1% of the oil) constituents: hexanal, tricyclene, sabinene, beta-pinene, alpha-terpinene, paracimene, limonene, cis-thujone, pinocarvone, borneol, beta

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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 and S. Marie Rogers

during transportation, we do not have sufficient data to evaluate the effect of treatments on the composition of peppermint and spearmint oil. The essential oil analyses indicated that peppermint oil contained α-pinene, β-pinene, sabinene, myrcene, l

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Mostafa Farajpour, Mohsen Ebrahimi, Amin Baghizadeh and Mostafa Aalifar

accessions of Iranian A. millefolium are known to produce a wide variety of chemical compounds in the essential oils, with the most abundant components identified as chamazulene, germacrene D, sabinene, β-caryophyllene, p-cymene, bornyl acetate, camphene, β

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Valtcho D. Zheljazkov, Tess Astatkie, Santosh Shiwakoti, Shital Poudyal, Thomas Horgan, Natasha Kovatcheva and Anna Dobreva

-pinene, camphene, sabinene, β-pinene, 1-octen-3-ol, myrcene, hexenyl acetate, paracymene, limonene, eucalyptol, cis-sabinene hydrate, paracymenenene, cis-thujone, transthujone, isothujol, camphor, borneol, menthol, 4-terpineol, paramethyl acetophenone/paracymen-8

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Elizabeth Baldwin, Jinhe Bai, Anne Plotto, John Manthey, Smita Raithore, Sophie Deterre, Wei Zhao, Cecilia do Nascimento Nunes, Philip A. Stansly and James A. Tansey

was highest in hexanal, decanal, ethanol (along with C ), terpinene-4-ol, α -pinene, sabinene, myrcene (along with C ), limonene (along with C ), γ-terpinene, ethyl butanoate, ethyl hexanoate, and acetone (the last three along with C and acetone