• 농약과학회지
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• 제6권2호
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• pp.64-71
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• 2002

Pseudomonas cepacia로부터 유래한 quinolinone 대사물질인 2-(2-hepteny)-3-methyl-4-quinolinone (1), 2-heptyl-3-methyl-4-quinolinone, 2-nonyl-3-methyl-4-quinolinone 및 합성물질 ethyl 2-methyl-3-alkyl-4-quinolinone carboxylate의 식물생장촉진 효과를 보기 위해 종자발아검정 및 경엽처리 후의 생장량을 측정하였다. 또한 종자침지 및 관주 처리후의 초고, 생체중, 과실수도 조사하였다. 화합물 1은 종자발아 효과와 경엽처리 후에 일관된 생장촉진 효과를 보였다. 종자침지와 관주처리 후에, 화합물 1과 합성물질 ethyl 2-methyl-4-quinolinone-3-carboxylate (5)를 처리한 식물에서의 생체중과 과실수는 크게 증가하였다. 화합물1과 5는 대조관보다 각각 44%와 84%의 과실수 증가를 나타냈다.

• 대한물리치료과학회지
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• 제12권4호
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• pp.43-55
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• 2005

This study was performed to investigate the effects of low-power Helium Neon Infra Red(He-Ne IR)laser irradiation and exercise on the regeneration of experimentally cut sciatic nerve in rats. The thrity Sprague-Dawley adult mail rats were assigned to the 6 groups : normal group(1), injured control groups(2), experimental groups(3). There was made artificial injured in the sciatic nerve of rats the each experimental laser group and exercise group were treated from 3 days after being injured for the 5 minutes(laser group), 10 minutes(exercise group), and 15 minutes(exercise and laser group) everyday during 2 weeks. There were measured the changes of amplitude of compound muscle action potential and histological change by the light microscopy on the sciatic nerve injured rats. The results obtained as follows : 1. In the control groups, the regeneration were slowly and slightlly progressed to compared with the experimental groups. Inflammation were much more observed, and fibrous adhesion was also observed around the sutured region of the cut sciatic nerve. 2. The amplitude of compound muscle action potential in the experimental groups were significantly increased to the injured control groups at 1 week(p<.05). The compound muscle action potential of the exercise and lased group was significantly decreased to be similar to normal group at 2 weeks(p<.05). 3. In histologic finding, in the experimental groups were observed the proliferation of the schwann cells, the infiltration of inflammatory cells and the extent of destruction at adjacent tissue were remarkably decreased on the 2 weeks. From these experimental results, it may be suggested that the laser and exercise were effected the heeling process of peripheral nerve injuried rats.

• 동의생리병리학회지
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• 제28권6호
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• pp.607-613
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• 2014

In a previous study, we have shown that mulberry leaves (Mori Folium) extract MFE) and its compounds have the antioxidant effect in human red blood cells. However, the possible effect of MFE and its compounds on improvement of blood flow were not reported. Therefore, the aim of this study is to investigate the effects of MFE and its compounds on improvement of blood flow in a rat model of topical ferric chloride ($FeCl_3$)-induced carotid artery damage. The $FeCl_3$ treatment seriously damaged the carotid artery: the walls of the artery, blood flow rate, blood vessel diameter, blood vessel area and blood flow amount. However, administration of MFE or its compound has ameliorated the blood flow and suppressed thrombus in blood vessels. Moreover, the concentrations of serum total cholesterol, triglycerides, and LDL cholesterol in the MET and its compound groups were remarkably reduced in comparison to the control group, and HDL cholesterol concentration was higher in the MET and its compound groups than in the control group. These results suggest that MFE and its compounds ameliorate the thrombosis against blood vessel damage.

• Bulletin of the Korean Chemical Society
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• 제29권3호
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• pp.546-550
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• 2008

The title compound of nicotinato lead(II) complex [Pb$(C_5H_4NCOO)_2$] has been optimized at B3LYP/LANL2DZ and HF/LANL2DZ levels of theory. The calculated results show that the lead(II) ion adopts 2- coordinate geometry, which is the same as its crystal structure and different from the 4-coordinate geometry of isonicotinato lead(II) complex. Atomic charge distributions indicate that during forming the title compound, each nicotinic acid ion transfers their negative charges to central lead(II) ion. The electronic spectra calculated by B3LYP/LANL2DZ level show that there exist two absorption bands, which have some red shifts compared with those of isonicotinato lead(II) complex and the electronic transitions are mainly derived from intraligand $\pi$ -$\pi$ transition and ligand-to-metal charge transfer (LMCT) transition. CIS-HF method is not suitable for the system studied here. The thermodynamic properties of the title compound at different temperatures have been calculated and corresponding relations between the properties and temperature have also been obtained. The second order optical nonlinearity was calculated, and the molecular hyperpolarizability was $1.147754{\times}10^{-30}$ esu.

• Journal of Microbiology and Biotechnology
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• 제22권12호
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• pp.1698-1704
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• 2012

Resveratrol, or its glycoside form piceid, is a dietary antioxidant polyphenolic compound, found in grapes and red wine that has been shown to have protective effects against cardiovascular disease. However, very low water solubility of the compound may limit its application in the food and pharmaceutical industries. The amylosucrase (AMAS) of Alteromonas macleodii Deep ecotype was expressed in Escherichia coli and showed high glycosyltransferase activity to produce the glucosyl piceid when piceid was used as an acceptor. The conversion yield of piceid glucoside was 35.2%. Biotransformation using culture of the E. coli harboring the amas gene increased the yield up to 70.8%. The transfer product was purified by reverse phase chromatography and recycling preparative HPLC, and the molecular structure of the piceid glucoside was determined using NMR spectroscopy. The piceid glucoside was identified as glucosyl-${\alpha}$-($1{\rightarrow}4$)-piceid. The solubility of glucosyl piceid was 5.26 and 1.14 times higher than those of resveratrol and piceid, respectively. It is anticipated that dietary intake of this compound is more effective by enhancing the bioavailability of resveratrol in the human body because of its hydrophilic properties in the intestinal fluid.

• 한국식품과학회지
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• 제30권4호
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• pp.970-975
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• 1998

약용 식물로부터 여러 효소의 저해제를 탐색 하였다. 한국산 우롱차엽으로부터 80%의 아세톤 추출물을 Sephadex LH-20, MCI-gel, Fuji gel 등을 사용하여 분리하였고 이 화합물은 Anisaldehyde 및 $FeCl_3$에 붉은색과 청색을 나타내었다. 이 화합물의 유도체화에 의한 기기분석 결과에서 상부는 -(-)epicatechin로 하부는 -(-)epigallocatechin 3-O-gallate 결합된 dimeric proanthocyanidin 종류인, $epicatechin-(4{\beta}{\rightarrow}8)-epigallocatechin{\;}3-O-gallate$로 화학 구조가 결정되었다. Xanthin oxidase 저해 효과에서는 $50{\;}{\mu}mole$에서 62%의 저해를 보여주어 앞으로 통풍 예방 기능성 식품 신소재로서의 이용이 가능하다는 것을 확인하였다.

• 생물환경조절학회지
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• 제27권4호
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• pp.415-423
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• 2018

본 연구의 목적은 3가지의 배추과 작물의 새싹에서 적색(R)과 원적외선(FR)광에 초점을 맞추어서 glucosinolate(GSL), 총 페놀, 총 플라보노이드, 비타민 C 함량, 항산화 활성을 평가하는 것이다. 제한된 환경조건에서 5일된 새싹에 3가지의 R/FR비율을 2일동안 24시간 노출시켜 식물화학물질과 항산화활성을 대조군[형광등, R:B(8:2), 암조건]과 비교하였다. 총 GSL 함량은 각 처리 기간 동안 3가지의 작물 중 브로콜리에서 가장 높았으며, 브로콜리 새싹에서 R/FR 비율이 증가함에 따라 총 GSL 함량이 감소하는 반면 배추와 무의 새싹에서는 유의하지 않은 결과를 보여주었다. 배추 및 브로콜리의 주요 GSL인 progointrin은 대조군에 비해 R/FR 비율이 감소함에 따라 최대 38%, 69%까지 감소하였다. 3가지 배추과 새싹에서 페놀, 플라보노이드 및 비타민 C의 함량 모두 암조건에서 가장 낮았다. 총 페놀 및 항산화 활성은 3가지 배추과 새싹에서 R/FR 비율이 감소할수록 증가하는 반면, 총 플라보노이드와 비타민 C 함량은 작물 간 다른 양상을 보였다. 이러한 결과는 FR의 보광에 따라 배추과 새싹의 기능적 품질을 향상시킬 것으로 기대된다.

• 동의생리병리학회지
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• 제23권1호
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• pp.121-126
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• 2009

Korean ginseng (Panax ginseng C. A. Meyer) has been used as an important medicinal plant in the Orient for a long time. It has been claimed that ginseng has many beneficial bioactive effects on human health, such as antitumor, antistress, antiaging and enhancing immune functions. Red ginseng possibly have new ingredients converted during steaming and dry process from fresh ginseng. In this study, pharmacological efficacy and ingredient conversion of ginseng by 9 repetitive steaming and drying process were investigated measuring conversion efficiency of acidic-polysaccharide, phenolic compounds and inhibition of peroxide lipides. It was found that acidic-polysaccarides were increased by heat treatment. In addition, maltol of phenolic compounds, strong antioxidant, produced during the process of red ginseng by Maillard reaction. Acidic-polysaccarides and maltol were increased after the 1st and 3rd steaming and drying treatments, but they were decreased gradually after 5th, 7th, and 9th treatments. Antioxidant activity was increased as increasing treatment times of steaming and drying without significance. Effect of red ginseng extract on inhibition of peroxide was increased gradually until after the 7th treatment, but remarkably decreased after the 9th treatment.

• 동의생리병리학회지
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• 제22권6호
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• pp.1557-1561
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• 2008

Red ginseng possibly has new ingredients converted during steaming and dry process from fresh ginseng. Kujeungkupo method which means 9 repetitive steamings and dryings process was used for the production of red ginseng from 6-year old ginseng roots. Saponin was extracted from each red ginseng produced at the 1st, 3rd, 5th, 7th, and 9th during the steaming and drying treatment, and we analyzed saponin content with TLC. Minor saponins, such as ginsenoside-Rg3, -Rh2, compound K, and F2, increased as the process time of steaming and drying, but major saponins (ginsenoside-Rb1, -Rb2, -Rc, -Rd, -Re, -Rf, -Rg1) were decreased. Major saponins were yet observed almost at the 1st process, then degraded as the increasing time of steaming and drying process. Especially, ginsenoside-Re and -Rg were observed as considerable amount after the 1st treatment, but there were no trace of them after the 9th treatment. Ginsenoside-Rg1, -Rb2, and -Rb1 were also reduced remarkedly by 96.6%, 96%, and 92.3%, respectively. Minor saponins were increased significantly, especially for ginsenoside-Rg3 and ginsenoside-F2. These results suggest that Kujeungkupo method is the very useful method for the production of minor ginsenoside-Rg3 and -Rh2.

• 한국미생물·생명공학회지
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• 제34권1호
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• pp.1-6
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• 2006

Harmful algal blooms (HABs or red tides), caused by uncontrolled proliferation of marine phytoplankton, impose a severe environmental problem and occasionally threaten even public health. We sequenced the genome of an EPS-producing marine bacterium Hahella chejuensis that produces a red pigment with the lytic activity against red-tide dinoflagellates at parts per billion level. H. chejuensis is the first sequenced species among algicidal bacteria as well as in the order Oceanospirillales. Sequence analysis indicated a distant relationship to the Pseudomonas group. Its 7.2-megabase genome encodes basic metabolic functions and a large number of proteins involved in regulation or transport. One of the prominent features of the H. chejuensis genome is a multitude of genes of functional equivalence or of possible foreign origin. A significant proportion (${\sim}23%$) of the genome appears to be of foreign origin, i.e. genomic islands, which encode genes for biosynthesis of exopolysaccharides, toxins, polyketides or non-ribosomal peptides, iron utilization, motility, type III protein secretion and pigment production. Molecular structure of the algicidal pigment was determined to be prodigiosin by LC-ESI-MS/MS and NMR analyses. The genomics-based research on H. chejuensis opens a new possibility for controlling algal blooms by exploiting biotic interactions in the natural environment and provides a model in marine bioprospecting through genome research.