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한국목재공학회> 목재공학(Journal of the Korean Wood Science and Technology)> Phenolic Compounds from Japanese Anise (Illicium anisatum L.) Leaves

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Phenolic Compounds from Japanese Anise (Illicium anisatum L.) Leaves

Seong-whan Shinn , Hee-jeong Min , Young-soo Bae
  • : 한국목재공학회
  • : 목재공학(Journal of the Korean Wood Science and Technology) 47권1호
  • : 연속간행물
  • : 2019년 01월
  • : 1-7(7pages)

DOI

10.5658/WOOD.2019.47.1.1


목차

1. INTRODUCTION
2. MATERIALS and METHODS
3. RESULTS and DISCUSSION
4. CONCLUSION
ACKNOWLEDGMENT
REFERENCES

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초록 보기


						
Japanese anise (Illicium anisatum L.) leaves were collected and ground after drying, then immersed with 50 % aqueous acetone for 3 days. After filtration, the extracts were fractionated with n-hexane, chloroform (CHCl3), ethylacetate (EtOAc) and H2O, and then freeze dried after concentration. A portion of EtOAc (3.12 g) and H2O (6.08 g) soluble fractions were chromatographed on a Sephadex LH-20 column with various aqueous MeOH solution to isolate the compounds.
Compound 1 ((+)-catechin) was isolated from EtOAc soluble fraction. Compounds 2 (quercetin), 3 (quercitrin) and 4 (2'-O-rhamnosylvitexin) were isolated from H2O soluble fraction.
For the first time, quercitrin (3) and 2'-O-rhamnosylvitexin (4) of the isolated compounds were obtained from the extracts of japanese anise leaves.

ECN


UCI

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  • : 공학분야  > 토목공학
  • : KCI 등재
  • : - / SCOPUS
  • : 격월
  • : 1017-0715
  • : 2233-7180
  • : 학술지
  • : 연속간행물
  • : 1973-2019
  • : 2315


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1표지 및 목차

저자 : 한국목재공학회

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 47권 1호 발행 연도 : 2019 페이지 : pp. 0--1 (0 pages)

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2Aims and Scope

저자 : 한국목재공학회

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 47권 1호 발행 연도 : 2019 페이지 : pp. 1-1 (1 pages)

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3Phenolic Compounds from Japanese Anise (Illicium anisatum L.) Leaves

저자 : Seong-whan Shinn , Hee-jeong Min , Young-soo Bae

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 47권 1호 발행 연도 : 2019 페이지 : pp. 1-7 (7 pages)

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Japanese anise (Illicium anisatum L.) leaves were collected and ground after drying, then immersed with 50 % aqueous acetone for 3 days. After filtration, the extracts were fractionated with n-hexane, chloroform (CHCl3), ethylacetate (EtOAc) and H2O, and then freeze dried after concentration. A portion of EtOAc (3.12 g) and H2O (6.08 g) soluble fractions were chromatographed on a Sephadex LH-20 column with various aqueous MeOH solution to isolate the compounds.
Compound 1 ((+)-catechin) was isolated from EtOAc soluble fraction. Compounds 2 (quercetin), 3 (quercitrin) and 4 (2''-O-rhamnosylvitexin) were isolated from H2O soluble fraction.
For the first time, quercitrin (3) and 2''-O-rhamnosylvitexin (4) of the isolated compounds were obtained from the extracts of japanese anise leaves.

4Pore Characterization in Cross Section of Yellow Poplar (Liriodendron tulipifera) Wood

저자 : Eun-suk Jang , Chun-won Kang , Sang-sik Jang

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 47권 1호 발행 연도 : 2019 페이지 : pp. 8-20 (13 pages)

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This study was conducted to analyze the pore structure of Yellow poplar. Cross-sectional surfaces of heartwood and sapwood of Yellow poplar (Liriodendron tulipifera) were observed by SEM, and the true density of the heartwood, intermediate wood and sapwood were measured by gas pycnometery, while gas permeability and pore size of heartwood, intermediate wood and sapwood were measured by capillary flow porometery. The pores were classified as through pore, blind pore and closed pore.
It was determined that the permeability was increased due to the content and size of through pore being increased although the total porosity of specimen showed slight difference from pith to bark. The content of through pore porosity was 33.754 % of heartwood and 47.810 % of sapwood, showed an increasing trend from pith to bark, however, those for the blind pore porosity and closed pore porosity were 27.890 % and 19.492 % for heartwood and 19.447 % and 4.660 % for sapwood, showed a decreasing trend from pith to bark.
The max pore size of specimens was increased by about 5 times from 5.927 μm to 31.334 μm, and mean flow pore size was increased by about 315 times from 0.397 μm to 12.437 μm from pith to bark.

5Decay of Populus cathay Treated with Paraffin Wax Emulsion and Copper Azole Compound

저자 : Jie Liu , Min Liu , Bingyi Hou , Erni Ma

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 47권 1호 발행 연도 : 2019 페이지 : pp. 21-32 (12 pages)

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In order to investigate the decay process of wood treated with preservative, waterproofing agent and their compound systems, a full-cell process was applied to impregnate the sapwood of poplar (Populus cathay) at paraffin wax emulsion concentrations of 0.5% and 2.0%, Copper Azole (CA) concentrations of 0.3% and 0.5%, and their four compound systems, respectively. Leaching tests and laboratory decay resistance against the white-rot fungus Corious versicolor (L.) Murrill for treated wood were carried out according to the America Standard E11-06 and China Standard GB/T 13942.1-2009. At certain time intervals during the decay test, samples were characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction technique (XRD) to investigate the time-dependent changes of chemical components and crystalline structure, thus clarifying the decay mechanisms. The results suggested that white-rot fungi degrade hemicellulose and lignin in the wood cell wall first, followed by a simultaneous degradation of polysaccharides and lignin. Besides, CA could not only slower the decomposition of both hemicellulose and lignin, but also reduce the degradation amount of hemicellulose. However, paraffin wax emulsion at high concentration had a negative effect on the impregnation of CA for the compound system treated wood.

6Sound Absorption Rate and Sound Transmission Loss of CLT Wall Panels Composed of Larch Square Timber Core and Plywood Cross Band

저자 : Chun Won Kang , Sang Sik Jang , Ho Yang Kang , Chengyuan Li

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 47권 1호 발행 연도 : 2019 페이지 : pp. 33-39 (7 pages)

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The square timbers of larch having cross section of 90 mm × 90 mm were glued laterally to be formed 1,200 mm × 2,400 mm panels which were used as cores for CLT wall panels. Then, structural plywood panels having size of 1,200 mm × 2,400 mm were used as cross band covering the small square timber cores to manufacture CLT wall panels. The sound absorption rate of CLT wall panels and polyester board attached CLT wall panels were investigated. The mean sound absorption coefficients of the former and the latter in the frequency range of 100-6400 Hz were 0.21 and 0.74, respectively. The noise reduction coefficients (NRC) of those were 0.21 and 0.40, respectively. Also, the mean sound transmission loss of CLT wood panel in the frequency range of 50-1600 Hz was 45.12 dB and that value at the frequency of 500 Hz was 42.49 dB. It was suggested that the polyester board attached CLT wall panels could be used as housing wall because of its high sound absorption rate and high sound transmission loss.

7Effects of Density, Temperature, Size, Grain Angle of Wood Materials on Nondestructive Moisture Meters

저자 : Sung-jun Pang , Gi Young Jeong

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 47권 1호 발행 연도 : 2019 페이지 : pp. 40-50 (11 pages)

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The aim of this study was to investigate the effects of density, temperature, size, and grain direction on measurement of moisture contents (MC) of wood materials non-destructively. The MC of different sizes of solid wood, glulam, and CLT from larch (larix kaempferi, 560 kg/m3) and pine (pinus koraiensis, 430 kg/m3) were measured using the dielectric type and resistance type meters. The specimens were conditioned in the environmental chamber to be equilibrium moisture content (EMC) of 12 % and 19 %. When density setting in dielectric type meter was increased from 400 kg/m3 to 600 kg/m3, the MCs of specimen (S-L-100-E) were decreased from 13.4 % to 11.3 %. However, when wood group (WG) setting in resistance type meter was changed from WG1 to WG4, the measured MCs were increased from 9.2 % to 12.3 %. When temperature setting in resistance type meters was changed from 0 to 35 ℃, the MC was decreased from 17.0 % to 13.0 %. The MCs measured by dielectric type meter for larger specimens (S-L-100-E_11.3 %, G-L-240-E_11.7 % and C-L-120-E_12.8 %) were higher than those of small size specimens (S-L-30-E_8.7 %, G-L-150-E_10.3 %, and C-L-90-E_9.7 %). The MCs measured by resistance type meter for larger specimens (G-L-240-E_11.6 % and C-L-120-E_13.3 %) were also higher than those of small size specimens (G-L-150-E_10.4 %, and C-L-90-E_11.8 %). The resistance type meter was not affected by the grain direction but the dielectric type meter were affected by the grain direction. The MC measured by resistance type meter for G-L-120-E perpendicular to grain direction was 11.5 % and the measured MC parallel to grain direction was 11.3 %. The MC measured by dielectric type meter parallel to grain direction (12.1 %) was higher than that measured perpendicular to grain direction (10.7 %).

8A Feasibility Study of Wood-plastic Composite Paver Block for Basic Rest Areas

저자 : Sungchul Yang

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 47권 1호 발행 연도 : 2019 페이지 : pp. 51-65 (15 pages)

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A wood-plastic composite (WPC) paver block was manufactured using wood chips waste through an extrusion process, and it was intended to be used for paving in basic rest areas. The first stage in this study covered preliminary tests in terms of flexural strength and dimensional swelling to determine the optimal WPC compounding mix condition, by variation of the WPC ingredients. Next, three different paver blocks including the WPC block, a non-porous cement block, and a porous cement block were tested in terms of various material properties in the laboratory. Finally, two outdoor test sections of the proposed paver blocks were prepared to simulate a basic rest area. Test results indicated that the flexural strength of the WPC paver blocks was about 1.6 times greater than that of the tested cement paver blocks. The WPC block pavement was unaffected by water buoyance as well as volume expansion due to swelling. Results from the impact absorbance test and light falling weight deflectometer (LFWD) test clearly showed that the WPC block paving system marginally satisfied the comfortable and safe hardness range from the pedestrians' perspective, while the results demonstrated that it is structurally sound for application as a road paving block.

9Change of Surface Temperature and Far-infrared Emissivity in Ceramics Manufactured from a Board Mixed with Sawdust and Mandarin Peel

저자 : Jung-woo Hwang , Seung-won Oh

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 47권 1호 발행 연도 : 2019 페이지 : pp. 66-79 (14 pages)

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본 연구는 톱밥과 농업부산물인 귤박을 이용하여 보드를 제조하고 세라믹화 하여 표면온도 및 원적외선 방사특성을 조사하였다. 세라믹의 표면온도는 경과시간 10분까지는 급속히 상승하였고, 30분 후에는 탄화온도가 높을수록 높았고, 귤박 혼합율별로는 별 영향이 없었다. 원적외선 방사율은 귤박 혼합율에 따라 일정한 경향이 없었고, 탄화온도가 증가할수록 낮은 값을 보였다.

10Hydrophilic Extracts of the Bark from Six Pinus Species

저자 : Masendra , Tatsuya Ashitani , Koetsu Takahashi , Mudji Susanto , Ganis Lukmandaru

발행기관 : 한국목재공학회 간행물 : 목재공학(Journal of the Korean Wood Science and Technology) 47권 1호 발행 연도 : 2019 페이지 : pp. 80-89 (10 pages)

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Pine barks are important biomass resources because they are utilised in the production of pine wood and rosins. However, no chemical study has been conducted on the hydrophilic status of pine barks in Indonesia. This aim of this study is to explore the hydrophilic extracts of the barks from six Pinus species (P. elliotii, P. caribeae, P. oocarpa, P. merkusii P. montezumae, and P. insularis). The hydrophilics of pine barks were analysed using gas chromatography-mass spectrometry. The presence of polyphenol contents in the ethanol extracts obtained from the barks of six Pinus species was determined using the tannin-formaldehyde method, Folin-Cioucalteu assay, and vanillin-HCl assay. The ethanol and hot water soluble extractives derived from inner barks were higher in quantity when compared to those derived from the outer bark samples. The polyphenol measurement showed that the highest value of total phenol content was derived from the outer bark of P. montezumae whereas those of the total phenol and tannin- formaldehyde contents were derived from the inner and outer barks of P. oocarpa. GC-MS analysis revealed that nitrogenous compounds are dominant constituents in the inner and outer barks of the six species, followed by sugars and monophenolics, respectively.

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