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        검색결과 14

        1.
        2012.06 구독 인증기관·개인회원 무료
        Mushrooms has been used for food ingredients since early times. Recently it is being used as a good pharmaceutical material or functional bio-material. Especially Ganoderma lucidum, Phellinus and Inonotus are used for medicinal purposes. Ganoderma is a basidiomycete white rot fungus which has been used for medicinal purposes for centuries particularly in China, Japan and Korea. A great deal of work has been carried out on Ganoderma lucidum. The metabolites consist of mainly polysaccharides and terpenoids. At present, Ganoderma is a health food supplement to support cancer patients, yet the evidence supporting the potential of direct in vivo anticancer effects should not be underestimated. the aim of this study was to investigate the anti-cancer effects and anti-inflammatory of Ganoderma lucidum in some kinds of human cell lines (Gastric:AGS, liver:HepG2, breast:MCF-7, lung:A549, uterine:Hela, Raw 264.7) we are examined the cell viability by MTT assay and effects of anti-inflammatory by NO assay. Anticancer and anti-inflammatory effect in the 10strains were selected.
        2.
        2012.06 구독 인증기관·개인회원 무료
        Ganoderma lucidum, a popular medicinal mushroom, has been used in China for longevity and health promotion since ancient times. Recently it is being used as a good pharmaceutical material or functional bio-material. Total 106 strains was cultured at temperature(25 ℃, 30 ℃ ,35 ℃) to study cultural properties of Ganoderma lucidum. Then the mycelium growth was digitized in the average diameter. With the result, Ganoderma lucidum strain has the optimum growing temperature at 25 ℃ with 25 strains, 30 ℃ with 70 strains and 35 ℃ with 11 strains. The 84strains were cultivated in wood for investigating the cultivation properties of Ganoderma lucidum. With the result, 70mm~90mm of the pileus diameter (major axis, mm) and 70mm-80mm of pileus diameter (minor axis, mm) was measured after one year cultivation. And 1,000-2,000 ㎟ of strain took the most the area (major axis x minor axis). The 30-40mm of stipe length,1time of harvesting and volume was 200g~400g took the most. 10cm-15cm of the pileus diameter (major axis, mm), 5cm~7.5cm of pileus diameter (minor axis, mm) and 15-20mm of thickness was measured after 2 year cultivation. And 50~100 ㎟ of strain took the most the area (major axis x minor axis). The 5-10mm of stipe length, 2 times of harvesting and volume was 200g~400g took the most. we are selected a middle model through this result. phylogenetic relationships was drawn based on the ITS sequence analysis in Ganoderma lucidum.
        3.
        2012.06 구독 인증기관·개인회원 무료
        This study was carried out to investigate anticancer activities fruiting body extracts and fractions of Cordyceps militaris. Fruiting body of this mushroom was extracted using by 80% MeOH. Fractionations of these extracts were performed by n-hexane, methylene chloride, ethyl acetate, n-BuOH. AGS(human gastric cancer line) was cultured in media conditions (10% FBS, 1% Penicillin-Streptomycin in RPMI). Anticancer activities of each fractions of Cordyceps militaris were examined by using MTT, Cell titer Glo.
        4.
        2011.05 구독 인증기관·개인회원 무료
        There are an estimated about 20,000 species of mushrooms in the world. Of these, approx. 2,0000 species is edible and around 1,500 species of them grow naturally in Korea. About 300 species of Korean natural mushroom could be classified as edible and medical purpose, but actual use is restricted to only 20 species. Mushrooms has been used for food ingredients since early times. Recently it is being used as a good pharmaceutical material or functional bio-material. Especially Ganoderma lucidum, Phellinus and Inonotus are used for medicinal purposes. In this meaning, the study about chemical component separation and active component effect is necessary. For the study, the systematic establishment of mushroom should be done. In this study, we are trying to build a library by using extracts from the edible, medicinal and wild mushrooms. The physiological activities(antioxidant, anticancer and anti-inflammatory effects) were performed to investigate the effectiveness of mushrooms.
        5.
        2011.05 구독 인증기관·개인회원 무료
        This study was carried out to investigate neuronal protective activity of fruiting body of Hericium erinaceum. In order to search the effective active compound against amyloid beta peptide-induced oxidative stress on neuronal cells, rat pheochromocytoma cells (PC12), Extracts of Hericium erinaceum were screened and evaluated using both the 2’,7’-dichlorofluorescin diacetate assay (DCF-DA), and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. According to above assays, Solvent partitions of extracts were selected for further purification and isolation of anti-Alzheimer’s disease compound as it exerted the highest protective effects against hydrogen peroxide (H2O2)-induced oxidative stress.
        6.
        2010.12 KCI 등재 구독 인증기관·개인회원 무료
        To understand the saccharide contents and quantity of winter mushroom (Flammulina velutipes) according to its growth temperature, we measured the saccharide contents at different growth temperature. In our results, the saccharide of its fruiting body turned out to be mainly composed of xylose, trehalose and mannitol in all treatments. In the other hand, Ribose, myo-inositol and sucrose were detected in some treatments. The quantity of trehalose decreased as the growth temperature increased with a variation of its quantity depending on the isolates used in the experiments. In the case of xylose and mannitol, detected in all treatments, the pattern of their quantities was not possible to be profiled and the pattern might be largely depending on the isolates. However, the quantities of xylose and mannitol were largely in a direct proportion and the fluctuation of their quantities was congruent with the exception of ASI 4103, ASI 4166 and ASI 4065. The xylose quantity of ASI 4103 and ASI 4166 increased until the temperature was up to 10℃ and decreased when the temperature was above 10℃. That of ASI 4065 decreased as the temperature rose and increased when above 13℃. The mannitol quantity of ASI 4065 and ASI 4166 decreased until the temperature was up to 10℃ and increased when the temperature was above 10℃. That of ASI 4103 increased as the temperature rose and decreased when above 13℃.
        7.
        2010.12 KCI 등재 구독 인증기관·개인회원 무료
        This study was carried out to investigate characteristic pattern of fruiting body of Ganoderma lucidum and their antioxidant activity. Mycelia of all strains were firstly inoculated into potato dextrose agar(PDA) and then transfered to a media of saw dust which contained 20% rice bran. These mycelia of saw dust were then inoculated into oak tree in polyethylene bags which has been sterilized for 8h at 120℃. The polyethylene bags were sent to a growth room for growth of fruit bodies. Antioxidant activities of each fruiting body were investigated by DPPH method.
        10.
        2010.06 KCI 등재 구독 인증기관·개인회원 무료
        This study was carried out to investigate characteristic pattern of fruiting body of Ganoderma lucidum and their antioxidant activity. Mycelia of all strains were firstly inoculated into potato dextrose agar(PDA) and then transfered to a media of saw dust which contained 20% rice bran. These mycelia of saw dust were then inoculated into oak tree in polyethylene bags which has been sterilized for 8h at 120℃. The polyethylene bags were sent to a growth room for growth of fruit bodies. Antioxidant activities of each fruiting body were examined by using DPPH(α,α-diphenyl-β-picrylhydrazyl).
        11.
        2009.06 KCI 등재 구독 인증기관·개인회원 무료
        This study was carried out to investigate chemical ingredient of Amillaria tabescens. Methanol extract of Amillaria tabescens was analyzed by column chromatography, thin layer chromatography, HPLC, mass spectrophotometer. ATB201 was isolated by prep-HPLC from butyl alcohol fraction. From the physico-chemical data, including NMR, MS, the chemical structure of the compound was determined to be an uracil. (Fig. 1). The molecular weights of uracil was 112.
        12.
        2009.06 KCI 등재 구독 인증기관·개인회원 무료
        This study was carried out to investigate chemical ingredient of Cryptoporus vovatus . Methanol extract of Cryptoporus vovatus was analyzed by column chromatography, thin layer chromatography, HPLC, mass spectrophotometer. CVM33100Me21 was isolated by prep-HPLC from methylene chloride fraction. From the physico-chemical data, including NMR, MS, the chemical structure of the compound was determined to be an ergosterol peroxide. (Fig. 1)
        13.
        2007.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Polypropylene (PP) composites with wood flour/wax/coupling agent were manufactured by melt compounding and injection molding. The influence of wood flour(WF), wax, and coupling agent on the mechanical and thermal properties of the composites was investigated. The addition of wood flour to neat PP has the higher tensile modulus and strength compared with neat PP. The presence of wax also improved the tensile modulus. At the same loading of PP and WF, the addition of coupling agent highly decreased the tensile modulus, and increased the tensile strength. From thermogravimetric analysis (TGA), the addition of wax improved the thermal stability of the composites in the later stages of degradation. The presence of MAPP and wood flour in turn decreased thermal stabilities of composites. From differential scanning calorimetry analysis (DSC), neither the loading of wax. nor the presence of MAPP has shown significant effect on the thermal transition of composites.
        4,200원
        14.
        2007.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        As a part of enhancing the performance of wood-plastic composites (WPC), polypropylene (PP)/ nanoclay (NC)/ wood flour (WF) nanocomposites were prepared using melt blending and injection molding process to evaluate their thermal stability. Thermogravimetric analysis (TGA) was employed to investigate thermal degradation kinetics of the nanocomposites both dynamic and isothermal conditions. Dynamic scans of the TGA showed an increased thermal stability of the nanocomposites at moderate wood flour concentrations (up to 20 phr, percentage based on hundred percent resin) while it decreased with the addition of 30 phr wood flour. The activation energy (Ea) of thermal degradation of nanocomposites increased when nanoclay was added and the concentration of wood flour increased. Different equations were used to evaluate isothermal degradation kinetics using the rate of thermal degradation of the composites, expressed as weight loss (%) from their isothermal TGA curves. Degradation occurred at faster rate in the initial stages of about 60 min., and then proceeded in a gradual manner. However, nanocomposites with wood flour of 30 phr heated at 300℃ showed a drastic difference in their degradation behavior, and reached almost a complete decomposition after 40 min. of the isothermal heating. The degree of decomposition was greater at higher temperatures, and the residual weight of isothermal degradation of nanocomposites greatly varied from about 10 to 90%, depending on isothermal temperatures. The isothermal degradation of nanocomposites also increased their thermal stability with the addition of 1 phr nanoclay and of wood flour up to 20 phr. But, the degradation of PP100/NC1/MAPP3/WF30 nanocomposites with 30 phr wood flour occurs at a faster rate compared to those of the others, indicating a decrease in their thermal stability.
        4,000원