• 한국대기환경학회지
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• 제18권6호
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• pp.515-525
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• 2002

A field study was conducted to estimate the emission rate of biogenic volatile organic compounds (BVOCs) from pine trees. In addition, the influences of meteological variables on their distribution characteristics have been investigated. A vegetation enclosure chamber was designed and constructed of Tedlar bag and acril. Sorbent tubes made up of Tenax TA and Carbotrap were used to collect biogenic VOCs emitted from each individual tree. Analysis of BVOCs was performed using a GC-FID system. The fundamental analytical parameters including linearity, retention time, recovery efficiency, and breakthrough volume were examined and verified for the determination of monoterpene emission rates. Total average concentration of each component is found to be $\alpha$-pinene (16.5), $\beta$-pinene (4.61) from pine trees, and $\alpha$-pinene (42.4), $\beta$-pinene (18.7 ng(gdw)$^{-1}$ hr$^{-1}$ ) from Korean pine trees. On the basis of our study, $\alpha$-pinene was found to be the major monoterpene emitted from both pine and Korean pine trees which were accompanied by $\beta$-pinene, camphene, and limonene. In ambient air, variable monoterpene compositions of emissions from pine trees were similar to Korean pine trees. Emission rates of monoterpene from each tree were found to depend on such parameters as temperature and solar radiation.

• 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.

• Food Science and Biotechnology
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• 제16권6호
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• pp.1055-1059
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• 2007

Two monoterpene glucosides, paeoniflorin and albiflorin, in peony (Paeonia lactiflora) were purified from 70% ethanol extract of Paeoniae Radix by diethyl ether washing and n-butanol partition, acetone dissolution, and gradient preparative HPLC. After the whole course of purification, yield of paeoniflorin, albiflorin, and the sum of them were 75.0, 38.8, and 68.7%, respectively, together with the corresponding purity of 96.2, 93.8, and 96.0%.

• The Korean Journal of Ecology
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• 제21권3호
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• pp.263-268
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• 1998

The composition and concentration of monoterpenes in the leaves of Artemisia japonica were determined. And seasonal variation in monoterpenes of A. japonica were investigated. Samples were taken from five sites at Mt. Muhak. Monoterpenes in the leaves were analyzed using gas chromatography-mass spectrometry. The leaf monoterpene fractions were dominated by R.T. 5.026, ${\alpha}-thujene$, sabinene, ${\beta}-pinene$, cyclohexane (R.T.=12.859) and R.T. 23.149. There were marked seasonal differences in concentration and composition of leaf monoterpenes. There were many kinds of monoterpenes in leaf of spring time, however most of monoterpenes concentration was small. On the other hand, there were not many kinds of monoterpenes in late time, but monoterpene concentrations were increased.

• 생약학회지
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• 제39권1호
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• pp.19-27
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• 2008

From the polar fractions of 70% EtOH extract of Paeonia lactiflora roots (Paeoniaceae), ten monoterpene glucosides were isolated and identified as lactiflorin (1), benzoylpaeoniflorin (2), mudanpioside C (3), $1-O-{\beta}-D-glucosylpaeonisuffrone$ (4), paeonidanin (5), $1-O-{\beta}-D-glucosyl-8-O-benzoylpaeonisuffrone$ (6), paeoniflorin (7), albiflorin (8), oxypaeoniflorin (9) and mudanpioside E (10) by spectroscopic methods. Among these glucosides, 3-6 and 10 were isolated for the first time from this plant.

• Archives of Pharmacal Research
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• 제29권10호
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• pp.815-820
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• 2006

Antibacterial activity-guided fractionation of the $CHCl_3-MeOH$ (1:1) extract of Paeonia suffruticosa root bark furnished three monoterpene glycosides, 6-O-vanillyoxypaeoniflorin (1), mudanpioside-H (2), and galloyl-oxypaeoniflorin (3). Of the isolated compounds, compound 1 is a new compound. All isolated compounds showed broad, but moderate, antibacterial activity with minimum inhibitory concentration (MIC) values in the range of 100 to $500\;{\mu}g/mL$ against eighteen pathogenic microorganisms of concern for public health or zoonosis.

• 한국산림과학회지
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• 제99권5호
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• pp.698-705
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• 2010

The concentration of monoterpenes (12 species) was measured from spring to fall in 2008 in ambient air at six different forests located in the southern parts of Korea. Sampling - using a Solid Adsorption Tube - was conducted at 2-hour-interval a day (24 hours) of each season. The highest annual average concentration of total monoterpene was 0.715 ppbv, which occurred at Mt. Baega. ${\alpha}$-Pinene, sabinene and ${\beta}$-pinene were the most abundant compounds throughout the sampling periods and areas. The concentrations of monoterpene were higher in spring than in any other seasons. The compositions and concentrations of monoterpene displayed a distinct pattern by area. Most of monoterpenes had diurnal variations with higher concentrations during the daytime, and lower during the nighttime. This may be due to the fact that the amount of monoterpenes emitted increases at elevated ambient temperatures and increased sunlight intensity. The results of this study showed that each area had distinct monoterpene compositions, which depended on the tree species, topography and local climate at each area.

• 한국산림과학회지
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• 제110권4호
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• pp.543-553
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• 2021

피톤치드는 식물체에서 방출되는 생물유래 휘발성유기화합물(BVOCs)에 포함되어있는 isoprene, monoterpene, sesquiterpene과 같은 화합물들 형태로 존재한다. 또한 피톤치드는 중요한 산림치유 인자인 동시에 질소화합물과 광학반응을 하여 오존 및 이차 유기에어로졸 생성에 영향을 미치는 물질로 보고되고 있다. 본 연구에서는 우리나라 도시숲 주요 30 수종을 선정하여 표준환경조건(온도: 30℃, 광도: 1,000 μmol/m²/sec)에서 400 L Tedlar bag의 순환형 챔버를 이용하여 시료를 포집하여 열탈착-GC/MS로 분석하였고, 해당 수종의 잎을 건조시켜 건중량 당 수종별 isoprene 및 terpene류의 방출량을 분석하였다. Isoprene 방출량은 전체 수종 중에서 왕대에서 가장 높았으며 졸참나무, 굴거리나무, 회양목이 주요 isoprnen 방출 수종으로 나타났다. Monoterpene 방출량은 리기다소나무에서 가장 높았으며 고로쇠, 일본잎갈나무, 백목련, 메타세쿼이아, 잣나무, 소나무, 전나무가 주요 monpterpene 방출 수종으로 나타났다. Monotrerpene 주요 물질은 α-pinene, myrcene, limonene, β-pinen, sabinene이였으며, sesquiterpene의 주요 물질은 caryophyllene, farnesene으로 나타났다. Oxygenated monoterpene의 주요 물질은 pulegone, borneol, menthol, eucalyptol, nerol이였고 oxygenated sesquiterpene에서는 carypphyllene oxide가 주요 물질로 검출되었지만 30개 수종에서 sesquiterpene과 oxygenated sesquiterpene의 방출량은 상대적으로 낮았다.

• 한국산림과학회지
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• 제111권4호
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• pp.490-501
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• 2022

식물체에서 isoprene, monoterpene, sesquiterpene과 같은 화합물들 형태로 방출되는 피톤치드를 포함한 VOCs를 총칭하여 생물유래 휘발성유기화합물 BVOCs (biogenic volatile organic compounds)로 구분하고 있다. 피톤치드는 중요한 산림치유 인자인 동시에 질소화합물과 광학반응을 하여 오존 및 이차 유기에어로졸 생성에 영향을 미치는 물질로 보고되고 있다. 본 연구에서는 우리나라 도시숲 주요 32 수종을 선정하여 3년생 이하 묘목을 연구 대상으로 표준환경조건(온도: 30℃, 광도: 1,000 μmol/m²/sec)에서 400 L Tedlar bag을 순환형 챔버를 이용하여 도시숲 주요 수종에서 방출되는 기체시료를 포집하여 열탈착-GC/MS로 분석하였다. 해당 수종의 잎을 건조시켜 건중량 당 수종별 isoprene 및 terpene류 38종의 방출량을 분석하였다. Isoprene 방출량은 전체 수종 중에서 신갈나무에서 가장 높게 나타났으며 버드나무, 아까시나무, 왕버들이 주요 isoprene 방출 수종으로 분류되었다. Monoterpene 방출량은 스트로브잣나무가 가장 높았으며 참죽나무, 박태기나무가 주요 monoterpene 방출 수종으로 나타났다. Monoterpene 주요 물질은 α-pinene, myrcene, camphene, limonene이였으며, oxygenated monoterpene의 주요 물질은 eucalyptol이였다. Oxygenated sesquiterpene에서는 caryophyllene oxide가 주요 물질로 검출되었지만 32개 수종에서 sesquiterpene과 oxygenated sesquiterpene의 방출량은 상대적으로 낮았다.

• 생약학회지
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• 제26권3호
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• pp.227-238
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• 1995

Recent reports on biotransformation of monoterpene alchols, aldehydes, acetates and epoxides are summerized. The studies have focused on stereospecific reaction of the functional groups of exogenous foreign substrates by foreign plant cells and micro-organisms. An another important aspect of research is the development of the immobilization technique for cells or related enzymes.