Distillation time effect on essential oil yield, composition, and antioxidant capacity of sweet sagewort (Artemisia annua L.) oil

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

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Sweet sagewort, also known as sweet wormwood (Artemisia annua L.), contains essential oil and other natural products. The objective of this studywas to evaluate the effect of eight different distillation times (DTs; 1.25 minutes, 2.5 minutes, 5 minutes, 10 minutes, 20 minutes, 40 minutes, 80minutes, and 160 minutes) on A. annua essential oil and its antioxidant capacity. Highest essential oil yield was achieved at 160-minute DT. The concentration of camphor (8.7% to 50% in the oil) was highest at the shorter DT and reached a minimum at 160-minute DT. The concentration of borneol showed a similar trend as the concentration of camphor. The concentrations of some constituents in the oil were highest at 2.5-minute DT (alpha-pinene and camphene), at 10 minutes (paracymene), at 20 minutes (beta-chamigrene and gamma-himachalene), at 80 minutes [transmuurola-4(15),5-diene and spathulenol], at 80- to 160-minute DT (caryophylene oxide and cis-cadin-4-en-ol), or at 160-minute DT (betacaryophyllene, transbeta-farnesene, and germacrene-D). The yield of individual constituents reached maximum at 20- to 160-minute DT (camphor) at 80- to 160-minute DT [paracymene, borneol, transmuurola-4(15),5-diene, and spathulenol], or at 160-minute DT (for the rest of the oil constituents). DT can be used to attain A. annua essential oil with differential and possibly targeted specific chemical profile. The highest antioxidant capacity of the oil was obtained at 20-minute DT and the lowest from the oil in the 5-minute DT. This study suggests that literature reports on essential oil content and composition of A. annua could be compared only if the essential oil was extracted at similar DTs. Therefore, DT must be reported when reporting data on essential oil content and composition of A. annua.

Original languageEnglish (US)
Pages (from-to)1288-1292
Number of pages5
JournalHortScience
Volume48
Issue number10
StatePublished - Oct 1 2013

Fingerprint

Artemisia annua
distillation
essential oils
antioxidants
oils
camphor
spathulenol
borneol
lipid content
camphene
farnesene
germacrene
alpha-pinene
oxides

Keywords

  • Betacaryophyllene
  • Camphor
  • Essential oil yield
  • Eucalyptol
  • Geramacrene-D
  • Steam distillation
  • Sweet sagewort

ASJC Scopus subject areas

  • Horticulture

Cite this

Distillation time effect on essential oil yield, composition, and antioxidant capacity of sweet sagewort (Artemisia annua L.) oil. / Zheljazkov, Valtcho D.; Astatkie, Tess; Horgan, Thomas; Schlegel, Vicki L; Simonnet, Xavier.

In: HortScience, Vol. 48, No. 10, 01.10.2013, p. 1288-1292.

Research output: Contribution to journalArticle

Zheljazkov, Valtcho D. ; Astatkie, Tess ; Horgan, Thomas ; Schlegel, Vicki L ; Simonnet, Xavier. / Distillation time effect on essential oil yield, composition, and antioxidant capacity of sweet sagewort (Artemisia annua L.) oil. In: HortScience. 2013 ; Vol. 48, No. 10. pp. 1288-1292.
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AB - Sweet sagewort, also known as sweet wormwood (Artemisia annua L.), contains essential oil and other natural products. The objective of this studywas to evaluate the effect of eight different distillation times (DTs; 1.25 minutes, 2.5 minutes, 5 minutes, 10 minutes, 20 minutes, 40 minutes, 80minutes, and 160 minutes) on A. annua essential oil and its antioxidant capacity. Highest essential oil yield was achieved at 160-minute DT. The concentration of camphor (8.7% to 50% in the oil) was highest at the shorter DT and reached a minimum at 160-minute DT. The concentration of borneol showed a similar trend as the concentration of camphor. The concentrations of some constituents in the oil were highest at 2.5-minute DT (alpha-pinene and camphene), at 10 minutes (paracymene), at 20 minutes (beta-chamigrene and gamma-himachalene), at 80 minutes [transmuurola-4(15),5-diene and spathulenol], at 80- to 160-minute DT (caryophylene oxide and cis-cadin-4-en-ol), or at 160-minute DT (betacaryophyllene, transbeta-farnesene, and germacrene-D). The yield of individual constituents reached maximum at 20- to 160-minute DT (camphor) at 80- to 160-minute DT [paracymene, borneol, transmuurola-4(15),5-diene, and spathulenol], or at 160-minute DT (for the rest of the oil constituents). DT can be used to attain A. annua essential oil with differential and possibly targeted specific chemical profile. The highest antioxidant capacity of the oil was obtained at 20-minute DT and the lowest from the oil in the 5-minute DT. This study suggests that literature reports on essential oil content and composition of A. annua could be compared only if the essential oil was extracted at similar DTs. Therefore, DT must be reported when reporting data on essential oil content and composition of A. annua.

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