• Horticultural Science & Technology
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• v.28 no.4
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• pp.696-700
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• 2010

Thirty-one units of pure rosemary essential oil (EO) in domestic and foreign distribution markets were collected. Aromatic components of these samples were analyzed and antioxidant activity was measured. As the result, major aromatic components were identified such as ${\alpha}$-pinene, camphene, ${\beta}$-pinene, 1.8-cineole, verbenone and borneol. Major components of rosemary EO were different according to countries. Essential oil from France had good quality. Essential oil cultivated and extracted in South Korea had more content than the collected essential oil in components of ${\alpha}$-pinene and camphene. Only 16% of the total 31 unit samples satisfied the content of 9 ingredients presented by ISO. The quality of EDA was shown as 4.8-96.0%, remarkable differences per specimen. A total of 31 units, only 13% of EO showed more than 60% antioxidant activity. Difference of antioxidant activity did not correspond with specific component. Essential oil from Swiss had high antioxidant activity.

• The Korean Journal of Ecology
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• v.24 no.1
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• pp.61-66
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• 2001

The total amount of monoterpenoids in A. artemisiifolia var. elatior leaves was increased continuously after Apr. and the highest amount was in Jul. The major monoterpenoids in A. artemisiifolia var. elatior leaves were consisted of 29 compounds and were dominated by No. 2, octene, α -pinene, β -myrcene ,1,3,6-octatrine, endo-borneol and (-)-bornyl acetate. The allelopathic effects of A. artemisiifolia var elatior leaves on the roots and shoots elongation of the selected plants were studied and there were significant allelopathic effects. The effects were much different between the selected plants and the effects signifcantly became higher with the quantity of leaves used in the experiment. The Lactuca sativa, Achyranthes japonica, and Oenothera odorta were suffered much higher effects than the other species. The allelopathic effects were also different with the leaves sampled in different seasons and the effects in july were found a little higher than in June and May.

• Korean Journal of Weed Science
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• v.9 no.2
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• pp.149-153
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• 1989

Volatile terpenes responsible for allelopathic activity in four weed species were identified using gas chromatography (GC) and GC-mass spectrometry. Artemisia asiatica Nakai contained 26 volatile terpenes, consisting of 16 monoterpenes and 10 sesquiterpenes, whereas there were only four terpenes in Trifolium repens L. and three terpenes each in Portulaca oleracea L. and Capsella bursa-pastoris (L,) Medik. Suspected allelochemics were ${\alpha}$-phellandrene, 1,8-cineole, limonene, ${\alpha}$-pinene, borneol, selinene, and caryophyllene in A. asiatica, ${\alpha}$-pinene and ${\beta}$-caryophyllene in T. repens, and ${\alpha}$-pinene in C. bursapastoris. No these compounds were found in P. oleracea.

• Applied Biological Chemistry
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• v.35 no.1
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• pp.55-63
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• 1992

The essential oil of Korean ginger(Zingiber officinale Roscoe) was isolated by liquid carbon dioxide extraction method and fractionated into one hydrocarbon fraction and two oxygenated hydrocarbon fractions by using silica gel column chromatography. The compositions of the resulting oils were investigated by GC and GC-MS spectrometry. Out of 102 identified compounds, 44 were identified by comparing GC retention time and mass spectral data with authentic samples and 58 were tentatively identified according to mass spectral data only. The major compounds of hydrocarhon fraction were $zingiberene,\;{\beta}-sesquiphellandrene,\;{\gamma}-bisabolene,\;{\gamma}-cardinene,\;ar-curcumene$, and those of oxygenated hydrocarbon fractions wee geranal, sesquisabinene hydrate, borneol and zingiberenol. The major compounds of ginger oil were zingiberene, $citronellol+{\beta}-sesquiphellandrene,\;geranial,\;{\gamma}-bisabolene\;and\;ar-curcumene+geranyl\;acetate$, and ginger oil contained higher amounts of sesquiterpene hydrocarbons. The yield of extract was 6.96%.

• The Korean Journal of Food And Nutrition
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• v.28 no.4
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• pp.533-543
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• 2015

This study investigated the chemical composition of Artemisia princeps var. orientalis (Pampan) Hara (ssuk in Korea) essential oil and the quantitative changes of major terpene compounds according to the time of harvest. The essential oils obtained by hydrodistillation extraction from the aerial parts of ssuk were analyzed by GC and GC-MS. The essential oil composition of ssuk was characterized by higher contents of mono- and sesqui- terpene compounds. Ninety-nine volatile flavor compounds were identified in the essential oil from ssuk harvested in 2010, with camphor (11.9%), ${\beta}-caryophyllene$ (9.11%), dehydrocarveol (8.51%), and borneol (7.72%) being the most abundant compounds. Eighty-three compounds were identified in the essential oil from the plant harvested in 2011, with borneol (12.36%), caryophyllene oxide (12.29%), ${\beta}-caryophyllene$ (10.24%), camphor (9.13%), and thujone (8.4%) being the most abundant compounds. Eighty-four compounds were identified in the essential oil from the plant harvested in 2012, with ${\beta}-caryophyllene$ (20.25%), caryophyllene oxide (14.63%), and thujone (11.55%) being the major compounds. Eighty-nine compounds were identified in the essential oil from the plant harvested in 2013, with thujone (23.11%), alloaromadendrene oxide (12.3%), and ${\beta}-caryophyllene$ (11.48%) being the most abundant compounds. Thujone and aromadendrene oxide contents increased significantly from 2010 to 2013, while camphor and dehydrocarveol contents decreased significantly during those 4 years. The quantitative changes in these 4 compounds according to the time of harvest can served as a quality index for ssuk essential oil. The ecological responses to recent climate changes may be reflected in the chemical components of natural plant essential oils.

• Korean Journal of Medicinal Crop Science
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• v.3 no.3
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• pp.217-225
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• 1995

In this study the essential oil and pharmacologically active components of different valerian species (Valeriana fauriei var. dasycarpa Hara and V. officinalis L. from Korea and V. wallichii DC from Nepal) were analyzed to search for native plant resources that can be used for medicinal herb and tobacco flavoring. The oil contents in dry roots of V. fauriei, V. officinalis and V. walhchii were 1. 71%, 0. 82% and 0. 83 %, respectively. The composition of the essential oil among different valerian species was compared. In V. fauriei 47 compounds were identified, while 21 and 25 compounds were identified in V. officinalis and V. wallichii. The major compounds in the oil of V. fauriei were bornyl acetate (33.8%) and camphene (10.8%), cedrol (4. 1 %), -pinene (3. 2%) and unidentified sesquiterpene alcohol (3. 0%). The major compounds were borneol (62. 5%) and ${\beta}-sesquiphelandrene$(6. 8%) and spathulenol (2. 1%) in V. officinalis, and borneol (74. 3%) and ${\alpha}-elemene$ (2.7%) and -sesquiphellandrene (2. 3%) in V. wallichii. Among the components known as major pharmacologically active compounds in European or Japanese valerian roots, valeranone, valerenal and -kessyl acetate was detected in a small amount in V. fauriei, but kessoglycol diacetate was not detected in V. faudei and V. officinalis Among the valepotrate compounds, major pharmacologically active components in V. wallichii, valtrate was detected in a small amount in V. fauriei and V. officinalis., and detected 1. 42% in V. wallichii. Didrovaltrate was also detected in the three valerian species tested, but acevaltrate was not detected except V. wallichii. On the other hand, antioxidative activity was slightly higher in V. fauriei than those of V. officinalis.

• Korean journal of food and cookery science
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• v.23 no.4 s.100
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• pp.413-422
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• 2007

In this study, changes in the volatile compounds of Artemisia capillaris essential oil were investigated under six different storage conditions for 6 months. The essential oil was collected by steam distillation and analyzed by a gas chromatography-mass selective detector (GC-MSD). Seventy-five volatile compounds were identified from the fresh essential oil of Artemisia capillaris. During storage, the total levels of aldehydes, alcohols, and ketones slightly decreased and the level of hydrocarbons greatly decreased; the total level of esters also decreased in the essential oil. Notably, the levels of carvacrol, eugenol, myrcene, 1,8-cineole, caryophyllene, coumarin, ${\alpha}-thujone$, ${\beta}-thujone$, borneol, and ${\gamma}-terpinene$, known as antioxidants and antimicrobial agents, decreased during storage. Finally, aerobic storage conditions caused greater reductions in some compounds even at low temperatures.

• Natural Product Sciences
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• v.3 no.2
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• pp.141-147
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• 1997

Volatile essential oils obtained by steam distillation from 55 plant parts of 42 species of representative aromatic plants newly collected in Korean peninsula have been evaluated for antimicrobial activity against 5 microorganisms. The essential oils derived from 15 plant parts and 9 plant parts were found to exhibit very strong antimicrobial activities by more than 95% inhibition at 100 ${\mu}g/ml$ against Staphylococcus aureus and Pseudomonas aeruginosa, respectively. Essential oil components such as l-limonene, ${\beta}-myrcene$, linalool, ${\gamma}-terpinene$, ${\alpha},{\beta}-phellandrene$, 1,8-cineole, l-borneol and bornylacetate, as a whole, have primarily contributed to the manifestation of the antimicrobial activity.

• Korean Journal of Pharmacognosy
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• v.7 no.4
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• pp.237-240
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• 1976

To investigate the constituents of following plants, Valeriana fauriei species, which are V. fauriei var. fauriei $H_{ARA}$, V. fauriei form. coreana $H_{ARA}$ and V. fauriei var. dasycarpa $H_{ARA}$, we carried out gas-liquid chromatographical analysis of the volatile oils of these plants and found that camphene, l-bornylacetate, ${\alpha}-pinene,\;{\beta}-pinene$, d,l-limonene, l-borneol and ${\alpha}-kessylacetate$ were common components in their volatile oils. However, their terpenoidal composition was considerably different from ${\alpha}-kessylacetate$ in V. faurie var. fauriei, from kessanol, ledol, kessoglycol and nardol in V. fauriei var. dasycarpa, and from kessoglycoldiacetate, ${\alpha}-kessylalcohol$, faurinone and terpineol in V. faurie form. coreana. It was found by gas-liquid chromatography that the terpenoidal patterns of these Korean valerians were similar to those of Japanish valerians.

• Natural Product Sciences
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• v.8 no.1
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• pp.18-22
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• 2002

Inhibitory effects of the essential oils obtained from ten herbs were tested on acetaminophen-induced lipid peroxidation in the rat. The oil of Artemisia princeps var. orientalis buds (AP-oil) showed the most significant hepatic malondialdehyde value which was comparable to those of ascorbic acid and methionine. This was warranted by the protective effect on hepatic glutathione depletion. Overview of the data on the activities of hepatic microsomal enzymes, aminopyrine N-demethylase and aniline hydroxylase led to the notice that the suppressed activities of those enzymes are mainly responsible for the anti-lipid peroxidation. The interpretation of GC-MS data on the AP-oil revealed the ingredient of cineol, thujone, carvone, borneol, camphor and terpineol.