• 대한화장품학회지
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• 제47권2호
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• pp.93-98
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• 2021

본 연구에서는 수입에 의존되는 아로마 에센셜 오일의 의존도를 낮추고 국내 수요 및 재배가 늘고 있는 허브 식물의 가치를 높일 수 있는 차별 방안을 찾고자 SPME 법으로 국내 재배 라벤더 꽃의 원물 손상 없이 향기 성분만을 분석 재현해내는 연구를 통해 수입 라벤더 에센셜 오일과의 향기 구성성분 차이를 확인하고 국내 재배 허브 식물의 향기 독창성을 찾고자 한다. 라벤더 에센셜 오일은 총 38 종, 라벤더 꽃은 총 27 종의 향기 성분이 분석되었으며 이들 중 공통성분은 myrcene, d-limonene, 1,8-cineol, ocimene, p-cymene, α-terpinolene, camphor, linalool, linalyl acetate, bornyl acetate, 4-terpineol 및 a-terpineol 으로 총 12 종이 유일하였다. 또한 두 시료의 향기 구성성분 중 국내 재배 라벤더 꽃의 알러젠 종류와 함량이 적음을 확인할 수 있었으며 15 명의 패널을 대상으로 관능평가를 시행한 결과 국내 재배 라벤더 꽃 재현향이 종래까지 산업에 활용되어져 온 라벤더 에센셜 오일보다 높은 호감도를 나타내어 알러지 유발성분의 함량을 낮춘 라벤더향으로 산업화에 확대 가능할 것으로 사료된다.

• Journal of Microbiology and Biotechnology
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• 제17권7호
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• pp.1169-1176
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• 2007

Genes encoding proteins responsible for limonene catabolism were cloned from a limonene-degrading microorganism, Enterobacter cowanii 6L, which was isolated from citron (Citrus junos) peel. The 8.6, 4.7, and 7.7 kb fragments (CD3, CD4, and CD6) of E. cowanii 6L chromosomal DNA that confer to E. coli the ability to grow on limonene have been cloned and their corresponding DNA sequences were determined. Nine open reading frames (ORFs) were identified, and the four ORFs (921 bp of CD3-2; 1,515 bp of CD4-1; 1,776 bp of CD6-1; and 1,356 bp of CD6-2) that encode limonene hydroxylase were confirmed by independently expressing these genes in E. coli. FAD and NADH were found to stimulate the hydroxylation reaction if added to cell extracts from E. coli recombinants, and multiple compounds (linalool, dihydrolinalool, perillyl alcohol, (${\alpha}-terpineol$, and ${\gamma}-terpineol$) were the principal products observed. Our results suggest that the isolate E. cowanii 6L has a broad metabolic capability including utilization of limonene. This broad metabolic ability was confirmed by identifying four novel limonene hydroxylase functional ORFs in E. cowanii 6L.

• Journal of the Korean Wood Science and Technology
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• 제22권3호
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• pp.59-67
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• 1994

The essential oils of leaves and resins from P. densiflora and P. koraiensis were analyzed to identify their components. After each retention times of 45 known terpenoids were dertermined with a fixed analytical condition by GC the essential oil compounds of leaves and resins were identified by comparing their retention times with the retention times of known standards. To confirm these results the essential oil components of leaves from P. koraiensis were analized by 2 different GC/MS. According to these results, 36 terpenoids in essential oils of leaves from P. densiflora and P. koraiensis were identified and 15 terpenoids and 22 terpenoids were identified from P. koraiensis resin and P. densiflora resin, respectively. The major components which are more than 2% of total amaunt of volatile components were as follows: 1. The major terpenoids of leaves from red pine. ${\alpha}$-pinene, camphene, ${\beta}$-pinene, D-limonene, ${\beta}$-phellandrene, myrcene, terpinolene, ${\alpha}$-terpineol. 2. The major terpenoids of leaves from korean pine. ${\alpha}$-pinene, camphene, myrcene, D-limonene, 3-carene, terpinolene, bornyl acetate, ${\beta}$-caryophyllene, ${\alpha}$-terpineol, borneol, ${\delta}$-cardinene. 3. The major terpenoids of resin from red pine. ${\alpha}$-pinene, ${\beta}$-pinene, myrcene, ${\beta}$-phellandrene, linalool, linalyl acetate. 4. The major terpenoids of resin from korean pine. ${\alpha}$-pinene, ${\beta}$-pinene, D-limonene, ${\beta}$-caryophyllene, phytol.

• 동아시아식생활학회지
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• 제27권2호
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• pp.159-167
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• 2017

In this study, quality characteristics of yakju fermented with byeo-nuruk prepared using rice, wheat, and water were investigated. Five different mixture ratios were considered for byeo-nuruk preparation. A comparative analysis of commercial yakju and byeo-nuruk yakju was also performed. The results showed no significant differences in pH, total acidity, and total soluble solids of byeo-nuruk yakju immediately following fermentation. The byeo-nuruk yakju alcohol content increased with increasing wheat proportion. Lactic and succinic acid were the major organic acids of byeo-nuruk yakju, and the major volatile components were isoamyl alcohol and linalool. Yakju prepared using material D had the highest volatile component content and high preference evaluation scores for taste and overall acceptability. Compared to commercial yakju, byeo-nuruk yakju had less total acidity, soluble solids, and volatile acids, whereas its pH level and amino acid content were higher. No significant differences were observed between commercial yakju and byeo-nuruk yakju in terms of sensory evaluation.

• Natural Product Sciences
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• 제26권1호
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• pp.97-107
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• 2020

Isolation of oils from leaves of Juniperus phoenicea and Juniperus oxycedrus was obtained by steam distillation extraction method. The compositions of essential oils (EOs) were studied by means of GC-MS and GC-FID, using the internal standard method and relative response factors. Around ninety eight compounds were determined in total, representing 98.25 g/100 g of EO of J. phoenicea and 98.48 g/100 g of EO of J. oxycedrus, respectively. The volatile leaf oils were dominated by the terpenic hydrocarbon fractions (79.87 g/100 g) and (61.27 g/100 g) characterized by high contents of α-pinene (64.6 g/100 g) and (54.0 g/100 g) in J. phoenicea and J. oxycedrus, respectively, as the main component. Also, the enantiomeric distribution of α-pinene, sabinene, camphene, δ-3-carene, β-pinene, limonene, linalool, terpinen-4-ol, bornyl acetate, and borneol in both oils is presented for the first time.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2003년도 춘계 학술대회지
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• pp.10-16
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• 2003

Natural resource plants have been useful and helpful materials for human to against diseases and Prevention since ancient Egyptian and Roman times. However, according to recent survey, its habitat and indigenous are continuously decreased and almost extinct some valuable species, as Adonis vernalis, Digitalis lanata etc., especially in Eastern Europe and east Asian countries due to radical political and social reforms. ESCOP and FAO have already initiated to protect the endangered species for conservation, protection and propagation technology but it is not easy tasks without global concerning. Most natural resource plants have volatile components in essential oils and its consumption and demanding is increased every year, which contained certain compounds have no side effects and good properties for biological activities. Essential oils of natural resource plants are also well known for medical purposes, such as Central Nervous System (CNS, linalool), anticancer (d-limonene, perillyl alcohol, etc.), microbial and fungicidal activities (menthol, borneol, etc). Essential oil also used for natural therapy to prevent and increase immune systems instead of chemical synthesis drugs. With this, researchers of natural resource plants are ultimately faced to develop and optimal technology for increasing the Korean farmer's income by high added-value herbal products in present and future.

• Bulletin of the Korean Chemical Society
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• 제35권1호
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• pp.211-217
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• 2014

A new needle-based device for headspace wire coated in-needle microextraction (HS-WC-INME) was fabricated using a nichrome wire coated with poly(ethylene glycol) (PEG) and poly(dimethylsiloxane) (PDMS) mixture. The proposed needle device was applied for the determination of volatile compounds in lavender and lavandin essential oils by gas chromatography. Fundamental parameters such as needle design, conditions of extraction and desorption were optimized along with the validation of the extraction and desorption efficiency. The optimal conditions were 30 min extraction at $50^{\circ}C$ and 2 min desorption at $240^{\circ}C$. The calibration curves showed good linearity with the suitable values of the coefficients of determination ($r^2$) greater than 0.99. The limits of detection for linalyl acetate, ${\beta}$-caryophyllene, linalool and (+)-limonene were 7.15, 9.04, 10.79 and 22.26 ng, respectively. Analytical recoveries were acceptable in the test samples, varying from 86.7% to 108.0%. The values of relative standard deviations for run to run showed range less than 0.9% while 3.9% through 7.2% for needle to needle. The proposed PEG-PDMS coating could be more suitable than PDMS coating to extract particular polar groups such as alcohols.

• 한국연초학회지
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• 제25권1호
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• pp.70-79
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• 2003

$\beta$ -Glucosidase-catalysed synthesis of glucosides with aromatic alcohols and monoterpene alcohols as accepters and cellobiose as a donor in the presence of various commercial $\beta$ -glucosidases were described. $\beta$ -Glucosidases from Aspergillus niger spp,. Trichoderma spp., Penicillium sup. and bitter almond have been shown to catalyze synthesis of $\beta$ -glucosides of benzyl alcohol, 2-hydroxybenzyl alcohol, 4-hydroxybenzyl alcohol, 2-phenylethyl alcohol, geraniol and citronellol in the presence of cellobiose as sugar donor. Among enzyme preparations tested, each $\beta$ -glucosides prepared from Aspergillus niger were isolated in the pure state by Diaion HP-20 and silica gel column chromatography. The products were identified as $\beta$ -glucosyl products of benzyl alcohol, 2-hydroxyhenzyl alcohol, 4-hydroxybenzyl alcohol, 2-phenyl ethyl alcohol, geraniol and citronellol by spectrometry (UV, IR, $^1$H-NMR, $^{13}$ C-NMR) and enzymatic hydrolysis with $\beta$ - glucosidase. Monoterpene alcohols with a sterically hindered hydroxyl group, such as linalool, $\ell$-menthol and $\alpha$-terpineol were not used as acceptors in transglycosylation reaction.

• Preventive Nutrition and Food Science
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• 제7권1호
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• pp.5-11
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• 2002

The comparison of the volatile flavor components from Korean and Japanese Satsuma mandarin (C. unshiu Marcov. forma Miyagawa-wase) peel oils, isolated by cold-pressing, was performed by gas chromatography, mass-spectrometry and gas chromatography-olfactometry (GC-O). Eighty-five volatile components were identified in each oil by GC and GC-MS. Forty-three components were detected in each oil by GC-O. The total amount of monoterpene hydrocarbons was 95.88% (Korean mandarin) and 95.29% (Japanese mandarin). Limonene, ${\gamma}$-terpinene, myrcene and $\alpha$-pinene were the main components of the cold-pressed oils from the both samples. The volatile composition of the Japanese mandarin was characterized by a higher content of sesquiterpene hydrocarbons, especially bicyclogermacrene, $\alpha$-humullene and valencene. The volatile composition of two samples can easily be distinguished by the percentages of aldehydes, ketones and esters, which were found at higher levels in the Japanese mandarin. The sweet and fruity flavor was stronger in the Korean mandarin oil while herbaceous flavor was stronger in Japanese sample. From GC-O data it is suggested that the sweet and fruity flavor of the Korean mandarin resulted from terpinolene and linalool, and the herbaceous note of the Japanese mandarin from $\alpha$-humullene, nepal, ι-carvone and perill aldehyde.

• Bulletin of the Korean Chemical Society
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• 제24권10호
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• pp.1475-1477
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• 2003

Three monoterpene glucosides (1-3), including one new compound (3), have been isolated from the methanol extract of Portulaca oleracea. Structures of these compounds were determined to be (3S)-3-O-( ${\Beta}$-Dglucopyranosyl)-3,7-dimethylocta-1,6-dien-3-ol (1), (3S)-3-O-( ${\beta}$-D-glucopyranosyl)-3,7-dimethylocta-1,5-dien-3,7-diol (2) and (3S)-3-O-( ${\beta}$-D-glucopyranosyl)-3,7-dimethyl-7-hydroperoxyocta-1,5-dien-3-ol (3), respectively, by a combination of spectral analyses. Their stereochemistries were established by measurement of NOE and vicinal proton-proton coupling constants as well as comparisons of spectral data with those of previously related compounds.