• 생약학회지
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• 제29권1호
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• pp.18-21
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• 1998

A method for isolation and quantitative determination of patchouli alcohol from Pogostemonis Herba (Pogostemon cablin) has been developed. Isolation of patchouli alcohol was achieved by column chromatography employing the normal-phase gradient separation system n-hexane-ether on silica gel column. The GC method for quantitative determination of patchouli alcohol provided a method for standardization of the raw drug. It suggested that the average content of patchouli alcohol in Pogostemonis Herba is about 0.26%.

• 한국연초학회지
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• 제24권2호
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• pp.101-106
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• 2002

This study was conducted to investigate the pyrolysis products of patchouli oil by Curie-Point pyrolysis. The pyrolysis of patchouli oil was performed at the temperature of 16$0^{\circ}C$, 42$0^{\circ}C$, $650^{\circ}C$, 76$0^{\circ}C$, and 92$0^{\circ}C$ by Curie-Point Pyrolyzer. The pyrolysis products were analyzed by gas chromatography(GC) and mass selective detector(MSD). Total 21 components were identified in the pyrolyzates of patchouli oil. The temperature for maximum formation of most of these compounds was in the range of 76$0^{\circ}C$~92$0^{\circ}C$. The major components were $\beta$-patchoulene, $\alpha$-guaiene, $\beta$-caryophyllene, $\alpha$-patchoulene, seychellene, $\delta$-guaiene, and patchouli alcohol. The numbers of the pyrolyzed products of patchouli oil were increased by increasing temperature, however, the yields of major components such as patchoulene, guaiene, seychellene and patchouli alcohol decreased as the temperature of pyrolysis was raised to 92$0^{\circ}C$, the highest temperature in this experiment. The optimum temperature for formation of the pyrolysis products such as styrene, indane and naphthalene was at 92$0^{\circ}C$.

• Natural Product Sciences
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• 제27권3호
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• pp.208-215
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• 2021

𝛽-Patchoulene (𝛽-PAE) is a tricyclic sesquiterpene which performed many potential bioactivities and can be found in patchouli oil but in very low concentration. This study aimed to obtained 𝛽-PAE in high concentration by conversion of patchouli alcohol (PA) in patchouli oil under acid catalyzed reaction. Patchouli oil was fractinated by vacuum distillation at 96 kPa to get the fraction with the highest PA content. H₂SO₄ and ZnCl₂ were used respectively as homogeneous and heterogeneous acid catalysts in the conversion reaction of the selected fraction. Patchouli oil, the fractions and the products were analysed by using GC-MS and FTIR instruments. Moreover, the interaction of 𝛽-PAE to COX-2 protein was studied to understand the antiinflammation activity of 𝛽-PAE. The results showed that patchouli oil contains 25.3% of PA. The selected fraction which has the highest PA content (70.3%) was distilled at 151 - 152 ℃. The application of ZnCl₂ catalyst in conversion reaction did not succeed. In contrast, H₂SO₄ as a catalyst in acetic acid solvent succeeded in converting the overall fraction of PA to 𝛽-PAE. Furthermore, the molecular docking study of 𝛽-PAE against COX-2 enzyme showed van der Waals and alkyl-alkyl stacking interactions on ten amino acid residues.

• 대한화장품학회지
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• 제35권1호
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• pp.33-39
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• 2009

본 연구는 천연 미백소재 개발을 위하여 광곽향 추출물과 광곽향 추출물에서 분리한 활성물질의 멜라닌 생성에 연관된 생리활성을 분석하였다. 광곽향 추출물은 $100{\mu}g/mL$ 이하에서 세포 독성이 없는 것으로 확인되었으며 free radical 소거능(DPPH)과 superoxide radical 소거능 결과는 각각 $IC_{50}=24.2{\pm}2.85{\mu}g/mL$, $IC_{50}=118{\pm}0.43{\mu}g/mL$을 나타내었다. B16 melanoma 세포에서의 멜라닌 생합성 저해 효과는 $20{\mu}g/mL$ 농도의 광곽향 추출물을 72 h 동안 처리한 세포에서 멜라닌 억제율이 23 %로 나타났으며, $50{\mu}g/mL$ 농도에서 세포 내 tyrosinase의 활성을 18 % 저해하였다. 이러한 광곽향 추출물의 활성물질을 분리하여 $^{1}H$-NMR, $^{13}C$-NMR, Mass analysis 등의 기기분석을 실시한 결과 sesquiterpene 계열의 활성물질인 patchouli alcohol으로 동정되었고, patchouli alcohol의 free radical 소거능과 superoxide radical 소거능 결과는 각각 $IC_{50}=3.14{\pm}0.12{\mu}g/mL$, $IC_{50}=49{\pm}3.24{\mu}g/mL$을 나타내었다. 또한 멜라닌 저해효과를 확인한 결과 $IC_{50}=3.9{\mu}g/mL$으로 나타났으며, $10{\mu}g/mL$ 농도에서 세포 내 tyrosinase의 활성을 40 % 저해하였다. Western blot을 이용하여 tyrosinase와 tyrosinase related protein-2 (TRP-2) 단백질의 발현 감소를 확인하였다. 그러므로 광곽향 추출물과 patchouli alcohol은 우수한 미백 효능을 갖는 화장품 소재로서 개발 가능성이 클 것으로 기대된다.

• Korean Chemical Engineering Research
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• 제55권4호
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• pp.510-513
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• 2017

Patchouli oil extraction in general is still using conventional methods that require a long time of extraction. It is therefore necessary to develop extraction methods to obtain patchouli oil with optimum yield and quality. One of the new methods, which has been successfully developed, is microwave hydrodistillation (MHD). In addition to optimizing the extraction process of patchouli oil, this study also used microwave air-hydrodistillation (MAHD). Based on the research results, extraction using MAHD method can produce higher yield of patchouli oil when compared using MHD method. Also, based on the results of the analysis by GC-MS, extraction using MAHD method can produce quality of patchouli oil that is almost the same when compared using MHD method. This is supported by the results of the analysis by GC-MS, which showed that the content of patchouli alcohol is the main component of patchouli oil, and is almost the same for patchouli oil extracted using MHD method (26.32%) and MAHD method (25.23%).

• Journal of Applied Biological Chemistry
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• 제62권1호
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• pp.19-23
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• 2019

수증기증류 추출법에 의한 미국산 길초근(Valeriana officinalis)의 구성성분을 알아보기 위해 GC-MS 분석을 수행한 결과, 주요 성분이 patchouli alcohol (18.69%) 및 ${\beta}$-gurjunene (15.26%)인 것으로 나타났다. 그리고 길초근 정유의 살비활성 및 항균활성을 알아보기 위해 작은소피참진드기 및 긴털가루응애에 대하여 접촉독성법을 실시하였고, 식중독균 8 종에 대하여 agar disc diffusion법을 실시하였다. 그 결과, 긴털가루응애 성충에 대하여 $28.01{\mu}g/cm^2$의 $LD_{50}$값을 나타내었으며, 작은소피참진드기 유충 및 약충에 대하여 각각 178.26 및 $207.98{\mu}g/cm^2$의 $LD_{50}$ 값을 나타내었다. 또한 식중독균은 8종 균주에 대하여 항균활성을 나타내었으며, 특히 L.monocytogenes에 대하여 우수한 항균활성을 나타내었다. 따라서 본 연구를 통해 수증기증류 추출법에 의한 길초근 정유가 살비제 및 항생제로서의 가치가 있음을 확인하였다.

• Journal of the Korean Wood Science and Technology
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• 제51권3호
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• pp.157-172
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• 2023

Azadirachta excelsa, is a plant belonging to the same genus as Indian neem (Azadirachta indica), and its use as a pesticide is reported by few studies. Despite being a different species, it is expected to have the same biopesticide potential as A. indica. Therefore, this study aims to investigate the anti-termite activity of n-hexane and methanol extracts of A. excelsa seed kernel at various concentrations against Coptotermes curvignathus. The methanol extract demonstrated greater termicidal activity than n-hexane at doses test of 2%, 4%, and 8%. It also showed 100% termite mortality on the third day of administering the 8% dose. According to the gas chromatography with mass spectrometry data, the putative main components of the n-hexane extract were hexadecanoic acid, ethyl ester (18.99%), 9,12-octadecadienoic acid (Z,Z)- (16.31%), and 9-octadecenal (16.23%). In contrast, the principal constituents of methanol extract were patchouli alcohol (28.1%), delta-guaiene (15.15%), and alpha-guaiene (11.93%). Furthermore, limonoids profiling of A. excelsa methanol extract was determined using Ultrahigh-performance liquid chromatography coupled with quadrupole-Orbitrap high-resolution mass spectrometry. The number of limonoids identified tentatively was fifteen, such as 6-deacetylnimbin, nimbolidin C, nimbolide, 6-acetylnimbandiol, 6-deacetyl-nimbinene, salannol, 28-deoxonimbolide, gedunin, nimbandiol, epoxyazadiradione, azadirone, 2',3'-dihydrosalannin, marrangin, nimbocinol, and azadirachtin. They were the same as those reported in the seed and leaves of A. indica, but its largest component in A. excelsa was 6-deacetylnimbin. As a result, the presence of these compounds may be responsible for the anti-termite activity of A. excelsa seed kernel extract. Additionally, column chromatography of methanol extract yielded 6-deacetylnimbin, which was found to be antifeedant and termiticide against C. curvignathus.