• Korean Journal of Pharmacognosy
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• v.19 no.4
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• pp.239-247
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• 1988

Essential oil of the root of Angelica gigas Nakai (Umbelliferae) was investigated. Essential oil was obtained from the dried roots by steam distillation and fractionated by column chromatography. Each isolate or fraction was identified by GC, GC-MS and spectral analysis. It was found to contain eleven monoterpenes such as ${\alpha}-pinene,\;camphene,\;{\beta}-pinene,\;myrcene,\;{\alpha}-phellandrene,\;{\Delta}-3-carene,\;{\alpha}-terpinene,\;p-symene,\;limonene,\;{\gamma}-terpinene$ and terpinolene and also found to contain 4-vinylguauacol, myristicin, elemol, ${\beta}-eudesmol,\;{\alpha}-eudesmol,\;four\;sesquiterpenes\;involving\;{\Delta}-elemene$. Four sesquiterpenes and five sesquiterpene alcohols were tentatively identified by comparison of their mass spectra.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.42 no.1
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• pp.7-13
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• 1997

The composition and chemical structures of same individual components of essential oils from ginger flavor plants were estimated by gas chromatography and gas chromatography-mass spetrometric analysis with the aid of NBS and Wiley library and RI indice searches. Through gas chromatography and gas chromatography /mass spetrometry analysis of 43, 41, 32 essential oil components from flowers, leaves and stems from Lindera obstusiloba., respectively were identified, among which sabinene, $\beta$-myrcene, ι-limonene, phelandrene, ${\gamma}$-selinene, $\alpha$-terpinene, 2, 4a, 5, 6, 7, 8, 9, 9a -octahydro benzocycloheptane, $\delta$-cadinene, ${\gamma}$-terpinene, (Z) -3-hexen-1-ol acetate, ${\gamma}$-elemene, l-boreneol, $\delta$-guaiene, ledene, cis-3-hexanal, elemol, $\alpha$-chamigrene, $\beta$-endesmol: 9-octadecanal, 1-(1, 5-diMe-4-hexenyl)-4-Me. benzene were estimated to be major components.

• Journal of the Korean Wood Science and Technology
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• v.40 no.4
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• pp.276-286
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• 2012

In this study, the antifungal activity of Cryptomeria japonica essential oil against superficial and allergic fungi, Trichophyton schoenleinii, Trichophyton tonsurans, Trichophyton mentagrophytes, Trichophyton rubrum, Epidermophyton floccosum, and Aspergillus fumigatus, was evaluated for determining the potential compound as dermatitis treatment. Minimum Inhibitory Concentration (MIC) measurement, TLC bioassay and agar dilution methods were used for determining the antifungal activity of crude essential oil and its fractions from C. japonica. Also, their major constituents were analyzed by GC/MS. The MICs were below 500 ppm at all superficial fungi, and spot 1 of C. japonica essential oil showed highly effective antifungal activity by TLC bioassay. In antifungal activity by agar dilution methods, crude oil showed high antifungal effect at more than 500 ppm and fraction D was significantly effective at even 100 ppm except for A. fumigatus. The major compounds of spot 1 and fraction D of C. japonica oil determined by GC/MS were elemol, ${\gamma}$-eudesmol, and ${\beta}$-eudesmol, which could be used as atopic dermatitis treatment material.

• Journal of the Korean Wood Science and Technology
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• v.36 no.6
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• pp.159-167
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• 2008

This study was carried out to investigate the potential promise of Chamaecyparis obtusa oil as a natural antioxidant. C. obtusa oil and its fractions were subjected to screening for their antioxidant activities by using 1,1-diphenyl-2-picrylhydrazyl (DPPH) method and ammonium thiocyanate method. In the first case, $IC_{50}$ value of the C. obtusa oil was determined as $40{\mu}{\ell}/m{\ell}$. At $0.5{\mu}{\ell}/m{\ell}$ concentration level, free radical scavenging effect of fraction G determined as 66.94% was the highest among the fractions of C. obtusa oil. In the ammonium thiocyanate method, essential oil of C. obtusa and its fraction C, D, and E showed activities of 72.0%, 71.2%, 71.9% and 71.1%, respectively. Fraction G, most active fraction, was mainly consisted of $\alpha$-terpineol, elemol, widdrol and $\alpha$-cadinol.

• Journal of Korean Society of Forest Science
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• v.96 no.1
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• pp.65-69
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• 2007

Essential oils which were isolated from leaves and twigs of Lindera obtusiloba Blume by steam distillation method were analyzed by the NIST and Wiley 6 Library method, using GC-MS. 24 components from the experiment were identified, and sesquiterpenoids were major of the components. The main constituents in the leaves were germacrene B (17.78%), ${\beta}-caryophyllene$ (17.50%), phytol isomaer (13.36%) and $(-)-{\beta}-elemene$ (11.07%), and the main in the twigs were ${\beta}-elemol$ (24.47%), ${\alpha}-cadinol$ (13.73%), camphor (9.83%) and ${\beta}-citronellol$ (9.54%). Acyclic diterpene such as phytone, phytol and phytol isomer were isolated for the first time in the leaves of L. obtusiloba.

• Food Science and Preservation
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• v.12 no.1
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• pp.68-74
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• 2005

This study was carried out to analyze to the flavor components of Lindera obtusiloba BL leaf teas by different processing methods. 81 kinds of flavor components in the masted tea, 78 in the roasted tea after steaming, 88 in the withered tea, 86 in the fermented tea, 72 in the steamed tea, and 89 in the air dried tea ware by GC/MS. Hydrocarbones in Lindera obtusiloba BL leaf teas were 45 kinds of $\beta-piepne$, and 16 kinds of alcohols such as Linalool, n-octanoal, phenyl acetaldehyde, $(-)-\alpha-terpineol$, elemol, and cholest-5-en-3-ol. 11 kinds of ketones sachas 2-ethyl-2- propyl-cyclohexanone, and 8 kinds of aldehydes sach as phenyl acetaldehyde, tetradecanal, 10-undecanal, 4-Bromo-2-methylbutanal were found. Esters were methyl 9,12,15-octadecatrienate, didodecyl phthalace, 1,2-benzenediccarbaboxy acid-bis (2-ethylhexyl)ester and phenols was 2,6-bis(1,1-dimethylethyl)-4-methyl-phenol.

• Journal of the Korean Wood Science and Technology
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• v.37 no.3
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• pp.265-273
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• 2009

The aim of this study was to investigate the antifungal activitiy of extracts from different parts of Cryptomeria japonica against Trichophyton mentagrophytes, Trichophyton rubrum and Microsporum gypseum. Disc diffusion and agar dilution methods were used for determining the antifungal activity of extracts, and their major constituents were analyzed by GC/MS. Black heartwood extract among the extracts showed the highest antifungal activity against dermatophytes. TLC was used for fractionating the effective fraction from the black heartwood extract with n-hexane and chloroform as developing solvents, and then antifungal activity of each fraction was examined against dermatophytes. As a result, seventh fraction showed the highest antifungal activity among nine fractions. The major constituent of the seventh fraction determined by GC/MS was expected to be sesquiterpene, damascone with 2 more carbon atoms. The other constituents were also identified as elemol, eudesmol and hinokione.

• The Korean Journal of Food And Nutrition
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• v.13 no.1
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• pp.66-70
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• 2000

The volatile components of Korea ginger were compared by using different isolation methods, head-space sampling procedure(HSSP), simultaneous distillation extrction(SDE) and soild pahse micro-extractions(SPME). Sixty-one components were identified by GC-MSD in the extracts obtained from each extraction methods. However, the components identified showed a difference in their composition wit the extraction methods. In the extract by HSSP, fifty-five components including a high volatile compound such as acetaldehyde, ethylacetate, 2,3-butandione were detected, and thirty-one components were identified in the extract by SPME. While, the low volatile components such as elemol, zingiberenol and ${\beta}$-eudesmol were detected only in the extract by SDE method. The results suggest that SDE method is the best for the analysis of low volatile components, whereas HSSP is a proper method for the analysis of high volatile components from natural resources.

• Journal of the Korean Wood Science and Technology
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• v.45 no.1
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• pp.96-106
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• 2017

This study aims to identify the chemical compositions and antioxidant activities of essential oil, extracted from the leaves of Neolitsea aciculata (Blume) Koidz by the hydrodistillation method. To the end, the chemical composition of N. aciculata leaf oil was firstly analyzed through GC/MS. The major constituents of essential oil were found to be: cis-ocimene (11.00%), trans-ocimene (9.65%), elemol (9.15%), ${\beta}$-elemene (8.75%), germacrene-D (7.55%), trans-caryophyllene (5.90%), ${\gamma}$-elemene (5.40%) and ${\tau}$-muurolol (4.95%). Then, the antioxidant potential of the essential oil was evaluated by the methods of total polyphenolic content (TPC) assay, DPPH radical scavenging activity, ABTS radical scavenging activity and ferric reducing antioxidant power (FRAP). It was estimated that the total polyphenolic content of the oil was $136.7{\pm}0.13\;mg\;GAE/g$ and the efficient concentration of the oil required to scavenge 50% DPPH radicals ($EC_{50}$ value) was $639.33\;{\mu}g/m{\ell}$. Also, ABTS radical scavenging activity was identified to be concentration dependent, while the FRAP value was $31.21{\pm}0.12\;{\mu}M$ $FeSO_4{\cdot}7H_2O/g$. Such figures, as a result, suggest that the essential oil extracted from the leaves of N. aciculata has its antioxidant activity, which can serve as significant health functional benefits.

• Applied Biological Chemistry
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• v.44 no.2
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• pp.116-121
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• 2001

The compositions of essential oils isolated from the leaves and fruits of Chamaecyparis obtusa (Sieb. et Zucc). Endl. and Chamaecyparis pisifera (Sieb. et Zucc.) Endl. were analyzed through GC and GC-MS. The oil yields were 0.83% (as fresh weight) and 1.36% in the leaves and the fruits of C. obtusa, and were 0.92% and 1.28% in those of C. pisifera, respectively. More than 90 components were identified, including high contents of monoterpenoids and sesquiterpenoids. Contents of monoteipenoids in the leaf and fruit oils of C. pisifera were higher than in those of C. obutsa. The major constituents in the leaf oil of C. obtusa were sabinene (11.81% as determined through GC peak area), limonene (7.73%), bornyl acetate (6.92%), $borneol+{\alpha}-teirineol$ (15.67%), and elemol (12.82%), and those in the fruit oil were myrcene (8.12%), ${\gamma}-terpinene$(5.91%), p-cymene(7.62%), $borneol+{\alpha}-terpineol$(6.53%) and ${\beta}-caryophyllene$ (23.74%). The major constituents in the leaf oil of C. pisifera were ${\alpha}-pinene$(32.34%), ${\delta}-3-carene$(25.28%), myrcene(11.72%), and bornyl acetate (8.77%), and those in the fruit oil were ${\alpha}-pinene$ (29.38%), ${\delta}-3-carene$(30.27%), myrcene(15.05%), and limonene(8.10%).