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Source publication
ellow rabbitbrush (Chrysothamnus viscidiflorus) is native to the Great Basin of NorthAmerica and the plant was part of the traditional medicine of Native Americans in theregion. There has been very little previous work on essential oils of Chrysothamnus, andno reports on C. viscidiflorus essential oil. Therefore, the purpose of this work was toeval...
Contexts in source publication
Context 1
... in Idaho: C. viscidiflorus subsp. lanceolatus H.M. Hall & Clem., C. viscidiflorus subsp. puberulus H.M. Hall & Clem., and C. viscidiflorus subsp. viscidiflorus (Hook.) Nutt. [3]. Chrysothamnus viscidiflorus subsp. viscidiflorus grows up to 1 m tall. The leaves are glabrous and viscid, 1 to 6 cm long and generally more than 1.5 cm wide ( Fig. 1) [1,4]. The viscidiflorus subspecies ranges throughout the Great Basin (Fig. 2) ...
Context 2
... were collected from several plants near Pine, Idaho (43°24ʹ20ʺN, 115°17ʹ33ʺW, 1426 m elevation) on June 28, 2022. The plant was identified by W.N. Setzer. Based on botanical descriptions [1,4] and comparison with herbarium samples from the New York Botanical Garden [9], the plant was identified as C. viscidiflorus subsp. viscidiflorus (Fig. 1). A voucher specimen (WNS-Cvv-5686) has been deposited in the University of Alabama in Huntsville herbarium. The fresh plant material from several plants was combined and 108.9 g was hydrodistilled using a Likens-Nickerson apparatus to give 1.221 g of a yellow essential oil. viscidiflorus. Adapted from Anderson ...
Citations
... The essential oils from the aerial parts of E. linearifolia were analyzed by gas chromatography (GC/MS and GC-FID) as previously described [14]. Retention indices (RI) were determined using the linear equation of van den Dool and Kratz [15]. ...
... The compound percentages were calculated from raw peak integration without standardization. Enantioselective GC/MS was carried out as described previously [14]. The individual enantiomers were determined by comparison of RI values with authentic samples (Sigma-Aldrich, Milwaukee, WI, USA), which are compiled in our in-house database. ...
... The P. sitchensis foliar essential oils were analyzed by GC-MS, GC-FID, and chiral GC-MS as previously described [20]. The essential oil compositions were determined by comparing both MS fragmentation and RI values with those reported in the Adams [21], FFNSC3 [22], NIST20 [23], and Satyal [24] databases. ...
... The A. millefolium essential oils were analyzed by GC-MS, GC-FID, and enantioselective GC-MS as previously reported [18]. J. Essent. ...
... The aerial parts essential oils of C. douglasii and D. canescens were analyzed by GC-MS as previously reported [15]: Shimadzu GCMS-QP2010 Ultra (Shimadzu Scientific Instruments, Columbia, MD, USA), ZB-5ms capillary column (60 m × 0.25 mm, 0.25 μm film thickness, Phenomenex, Torrance, CA, USA); He carrier gas, head pressure = 208.3 kPa, flow rate = 2.00 mL/min, injector temperature = 260 °C, ion source temperature = 260 °C, interface temperature = 260 °C, GC oven program (50 °C initial temperature, ramp up to 260 °C at 2 °C/min, held at 260 °C for 5 min); 0.1 μL injection, 5% w/v essential oil/CH2Cl2, 24.5:1 split mode. ...
... Chemical components were identified by comparing MS fragmentation and RI values with those in the Adams [17], FFNSC3 [18], NIST20 [19], and Satyal [20] databases. Gas chromatography -flame ionization detection (GC-FID) was carried out as previously described [15]: Shimadzu GC 2010 with FID detector (Shimadzu Scientific Instruments, Columbia, MD, USA), ZB-5 capillary column (60 m 0.25 mm 0.25 μm film thickness) (Phenomenex, Torrance, CA, USA), same operating conditions as above for GC-MS. The percent compositions were determined from raw peak areas without standardization. ...
... The percent compositions were determined from raw peak areas without standardization. Chiral GC-MS was used to evaluate the enantiomeric distributions of chiral terpenoids as previously reported [15]: Shimadzu GCMS-QP2010S (Shimadzu Scientific Instruments, Columbia, MD, USA), Restek B-Dex 325 column (30 m 0.25 mm diameter 0.25 μm film thickness) (Restek Corp., Bellefonte, PA, USA); He carrier gas, head pressure = 53.6 kPa, flow rate = 1.00 mL/min, injector and detector temperatures = 240 °C, GC oven program (50 °C initial temperature held for 5 min, ramp up to 100 °C at 1.0 °C/min, then ramp to 220 °C at 2.0 °C/min); 0.3 μL injection, 5% w/v essential oil/CH2Cl2, 24.0:1 split mode. Retention indices (RI) determined with respect to a series (C8-C21) of n-alkanes. ...
Background
Anthriscus caucalis is a non-native plant in North America with invasive potential. As part of our interests in essential oils of the Great Basin, a wild-growing sample of A. caucalis was collected in southwestern Idaho.
Methods
The essential of A. caucalis was obtained by hydrodistillation and analyzed by gas chromatographic methods (GC–MS, GC–FID, and chiral GC–MS).
Results
The major components in the essential oil were cis-chrysanthenyl acetate (42.3%), myrcene (20.4%), cis-chrysanthenol (6.7%), α-pinene (4.2%), and (E)-β-farnesene (4.2%). (+)-α-Thujene, (+)-α-pinene, (+)-sabinene, (+)-limonene, (−)-β-phellandrene, (−)-bornyl acetate, (−)-(E)-β-caryophyllene, and (−)-germacrene D were the predominant enantiomers in the essential oil.
Conclusion
The essential oil composition of A. caucalis from Idaho is similar to those from Europe, but markedly different from A. caucalis from China. The enantiomeric distributions are comparable to those reported in other essential oils of the Apiaceae.
Leaves of Holodiscus dumosus were obtained from a wild-growing plant in southern Idaho. The leaf essential oil was obtained by hydrodistillation (0.151% yield) and analyzed by gas chromatography (GC-MS, GC-FID, and chiral GC-MS). The major components in the leaf oil were geraniol (17.4%), germacrene B (8.9%), (E)-β-caryophyllene (6.1%), α-cadinol (5.7%), linalool (4.7%), and γ-elemene (4.0%). Linalool was nearly racemic (54.0% (-)-linalool, 46% (+)-linalool) while (-)-(E)-β-caryophyllene was the exclusive enantiomer. Linalool, geraniol, and (E)-β-caryophyllene were screened for antimicrobial activity and showed strong activity (MIC < 500 μg/mL) against Staphylococcus aureus, S. epidermidis, Candida albicans, Microsporum canis, M. gypseum, and Trichophyton rubrum, which may account for the Native American traditional use of the plant as an antiseptic wash.
