• Title/Summary/Keyword: Flammulina velutipes

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Inhibitory Activities of Basidiomycetes on Prolyl Endopeptidase, Acetylcholine Esterase and Coagulation (담자균 추출물의 Prolyl Endopeptidase, Acetylcholine Esterase 저해 및 항혈전 응고활성)

  • Lee, Hyun-Jin;Kim, Jong-Sik;Heo, Gun-Young;Lee, Kyung-Bok;Rhee, In-Koo;Song, Kyung-Sik
    • Applied Biological Chemistry
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    • v.42 no.4
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    • pp.336-343
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    • 1999
  • Fifty six mycelial cultured Basidiomycetes were screened for their inhibitory effects against prolyl endopeptidase(PEP), acetylcholine esterase(AChE) and thrombus coagulation. Out of them, methanolic extract of mycelium and/or ethylacetate(EtOAc) soluble fraction from culture broth of Peniophora quercina, Amanita aspera, Phellinus chrysoloma, Grifola frondosa, Wolfiporia extensa, Clavicorona pyxidata and Phanerochaete sordida inhibited more than 90% of PEP activity at 40 ppm. The extracts of Lenzites betulina, Phellinus chrysoloma, Wolfiporia extensa, Phanerochaete sorrlida, Hypocrea nigricans, Coriolus azureus, Flammulina velutipes, Phlebiopsis gigantea and Bondarzewia montana exhibited about 40% of inhibitory activity against AChE at 40 ppm. In thrombin times assay, the extracts of Amanita aspera, Oxyporus latemarginata, Peniophora quercina, Fomes fomenfarius, Trametes versicolor, and Phlebiopsis gigantea delayed coagulation of thrombus about two to three times over control at ca 550 ppm. In activated partial thromboplastin times assay, none of the tested Basidiomycetes showed significant effect.

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Agricultural and Marine By-Products Fermented Diet and Its Economic Value in Pigs (농수부산물 발효사료가 양돈에 미치는 경제적 효과 분석)

  • Chu, Gyo-Moon;Kim, Hoi-Yun;Ha, Ji-Hee;Yang, Jeong-Mo;Yang, Bo-Seock;Park, Cheol-Jin;Song, Young-Min
    • Journal of agriculture & life science
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    • v.46 no.3
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    • pp.59-68
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    • 2012
  • This study was conducted to investigate the economic analysis of fermented diet made of agricultural and marine by-products such as, dropped apples, persimmon shells, mushroom (Flammulina velutipes) by-products, king oyster mushroom by-products and brewer's grain in Berkshire or crossed pigs. The daily diet cost were decreased by 2.16~3.44%, 3.83~13.35% and 7.47~41.61% when fermented dropped apples diet, fermented persimmon shells diet and fermented mushroom (F. velutipes) by-products diet were fed to Berkshire pigs. The daily feed cost was also decreased by 1.59~4.05% and 59.09~66.90% when fermented king oyster mushroom by-products diet and fermented brewer's grain diet were fed to crossed pigs. Carcass prices were increased by 3.09%, 1.20~3.40% and 1.13% when 2% fermented dropped apples diet, fermented persimmon shells diet and 0.5~1.0% fermented mushroom (F. velutipes) by-products diet were fed to Berkshire pigs. Carcass prices were increased by 2.87~4.19% and 41.31~49.14% when fermented king oyster mushroom by-products diet and fermented brewer's grain were fed to crossed pigs. Therefore, fermented agro by-products diet of dropped apples, persimmon shells, king oyster mushroom, mushroom (F. velutipes) and brewer's grain was expected to improve swine farms income due to decreased diet cost and increased carcass prices in Berkshire pigs or crossed pigs.

Comparison of the saccharide content of spent mushroom (Pleurotus ostreatus, Pleurotus eryngii, and Flammulina velutipes) substrates under various pretreatment conditions (전처리 방법에 따른 느타리, 큰느타리 및 팽이버섯 수확후 배지의 당함량 비교분석)

  • Kim, Jeong-Han;Lee, Yun-Hae;Chi, Jeong-Hyun;Jang, Myoung-Jun
    • Journal of Mushroom
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    • v.14 no.2
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    • pp.70-74
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    • 2016
  • A new method to utilize spent mushroom substrates (SMS) for ethanol production was investigated. Analysis of the chemical properties of SMS revealed that they were decomposed by the mushrooms during cultivation. In particular, the free sugar content in SMS was reduced to half of that in mushrooms. Of the tested SMS, the Pleurotus eryngii SMS was determined to be suitable for saccharification. Upon pretreatment with a 1% alkaline solution, Pleurotus eryngii SMS achieved 80.7% of its maximum saccharification ratio. The optimum pretreatment conditions for enzyme saccharification were 1% NaOH solution at $120^{\circ}$ for 60 min. Further studies are required to determine ethanol production using Pleurotus eryngii SMS.

Characteristics of Transformants in Pleurotus florida (사철느타리버섯 형질전환주(形質轉換珠)의 특성(特性))

  • Byun, Myung-Ok;Kim, Kyung-Soo;Cha, Dong-Yeol
    • The Korean Journal of Mycology
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    • v.20 no.3
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    • pp.222-228
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    • 1992
  • Pleurotus florida was transformed by complementation of auxotrophic mutant using chimeric plasmid containing Flammulina velutipes leu 2 gene and pBR 322 replicon. Mycelial morphology of transformants was grown and compared on mushroom complete and minimal medium. Transformants were mated with monokaryon and their genetic recombination was investigated for the morphology of fruitbody and spore analysis. $Leu^+$ transformant showed same mating type of $A_1B_1$ as to the untransformed mutant. The transformant and the untransformed mutant were mated with monokaryon of which mating type is $A_2B_1$, respectively. Although fruitbody of the untransformed mutant was not produced, $leu^+$ transformant produced fruitbody. Spore analysis showed that leucine requiring spores from fruitbody of $leu^+$ transformant were diminished when compared with those of untransformed mutant.

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Inhibitory effect of mushrooms extract on TNF-α/INF-γ induced-cytokine in human keratinocytes, HaCaT (버섯류 추출물의 피부각질세포(HaCaTcell) 내 염증성 사이토카인 억제효과)

  • Choi, Eun-Ju;Kim, Eun-Kyung;Ji, Yong-Seok;Lee, Chang-Jin
    • Journal of Mushroom
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    • v.13 no.3
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    • pp.170-174
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    • 2015
  • Mushroom is known for anti-inflammatory and anti-oxidative potential. This study provides evidence that the inhibitory effect of mushroom on the expression of pro-inflammatory cytokines in human keratinocytes, HaCaT cells. To define the underlying mechanisms of action, tumor necrosis factor${\alpha}$/$IFN{\gamma}$-activated human keratinocytes model was used. Mushroom significantly inhibited the expression of cytokines in HaCaT cells. Taken together, the results demonstrate that mushroom inhibited inflammtion, suggesting that mushroom (DW extract: Grifola frondosa Cordyceps militaris), (Ethanol extract: Ganoderma lucidum, Lentinus edodes, Cordyceps militaris, Flammulina velutipes) might be a candidate for the treatment of skin inflammation.

Effect of Conversion Rate of γ-Aminobutyric acid (GABA) by Yogurt Fermentation with Addition of Nanoparticle Winter Mushroom and Hydroponic Ginseng (팽이 및 수경인삼 분말 및 요구르트 발효에 의한 γ-Aminobutyric acid (GABA)의 전환효율 증진)

  • Shin, Pyung-Gyun;Kim, Hee-Cheong;Yoo, Young-Bok;Kong, Won-Sik;Oh, Youn-Lee
    • Journal of Mushroom
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    • v.13 no.4
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    • pp.334-337
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    • 2015
  • ${\gamma}$-Aminobutyric acid (GABA) is basically neurotrasmitter produced by the decarboxylation of L-glutamic acid catalyzed by glutamic acid decarboxylase (GAD), which was known to convert monosodium glutamate (MSG) to GABA. To investigate enhancement of reversion rate of GABA, the yogurt fermentation with addition of nanoparticle winter mushroom and hydroponic ginseng was used. The conversion rate was revealed to nanoparticle winter mushroom and hydroponic ginseng fermenter (88%) > winter mushroom fermenter (52%) > nanoparticle winter mushroom fermenter (44%). The results showed that nanoparticle winter mushroom and hydroponic ginseng supplemented substrates for enhancement of GABA may be used more effectively as one of potential sources of functional foods.

Effect of Mushrooms on the Growth of Intestinal Lactic Acid Bacteria (버섯의 장내 유산균 증식 효과)

  • Han, M.J.;Bae, E.A.;Rhee, Y.K.;Kim, D.H.
    • Korean Journal of Food Science and Technology
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    • v.28 no.5
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    • pp.947-952
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    • 1996
  • The objective of this study was to evaluate the effect of mushrooms on the growth of intestinal lactic acid bacteria. Bifidobacterium breve and the total intestinal flora of human and rats were inoculated in the general anaerobic medium which contained each mushroom water extract. Except Pleurotus ostreatus and Flammulina velutipes, the mushroom extracts induced the growth of lactic acid bacteria by decreasing pH of the broth. The pH decreasing effect was excellent especially with Lentinus edodes, Agarocus bisporus and Coriorus versicolor. This effect was due to the increase in the number of Bifidobacterium in the intestinal bacterid. This growth of lactic acid bacteria effectively inhibited the bacterial enzymes, ${\beta}-glucosidase,\;{\beta}-glucuronidase$ and tryptophanase, of intestinal bactetria.

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In Vitro Antagonistic Characteristics of Bacilli Isolates against Trichoderma spp. and Three Species of Mushrooms

  • Kim, Wan-Gyu;Weon, Hang-Yeon;Seok, Soon-Ja;Lee, Kang-Hyo
    • Mycobiology
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    • v.36 no.4
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    • pp.266-269
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    • 2008
  • Twenty isolates of Bacillus species obtained from livestock manure composts and cotton-waste composts were tested for their antagonistic effects in vitro against three green mold pathogens of mushrooms (Trichoderma harzianum, T. koningii, and T. viridescens). However, there exists a possibility Bacillus species may have antagonistic effects against mushrooms themselves, and thus the same 20 isolates were tested in vitro against three species of mushrooms (Flammulina velutipes, Lentinus edodes, and Pleurotus ostreatus). Of the 20 Bacillus species isolates tested, two inhibited mycelial growth of T. harzianum, seven that of T. koningii, and eight that of T. viridescens. Importantly, the bacterial isolates M27 and RM29 strongly inhibited mycelial growth of all the Trichoderma spp. isolates tested. The isolate M27 was subsequently identified as the most effective in inhibiting mycelial growth of all the Trichoderma species. Interesting results of the effect Bacillus isolates had upon the mushroom species followed. It was found that most Bacillus isolates except 5T33 at least somewhat inhibited mycelial growth of the three mushroom species or some of the mushrooms. Furhermore, the antagonistic effects of the bacterial isolates against the three species of mushrooms varied depending on the mushroom species, suggesting a role for mushroom type in the mechanism of inhibition. The bacterial isolates M27 and RM29 were identified as having the most antagonistic activity, inhibiting mycelial growth of all the Trichoderma spp. as well as mycelial growth of the three species of mushrooms. These results suggest that the bacterial isolates and their antagonistic effects on green mold pathogens should be further studied for their practical use for biological control of green mold in the growing room of the mushrooms.

Extraction and Application of Bulk Enzymes and Antimicrobial Substance from Spent Mushroom Substrates

  • Lim, Seon-Hwa;Kwak, A Min;Min, Kyong-Jin;Kim, Sang Su;Kang, Hee Wan
    • 한국균학회소식:학술대회논문집
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    • 2014.10a
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    • pp.19-19
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    • 2014
  • Pleurotus ostreatus, P. eryngii, and Flammulina velutipes are major edible mushrooms that account for over 89% of total mushroom production in Korea. Recently, Agrocybe cylindracea, Hypsizygus marmoreus, and Hericium erinaceu are increasingly being cultivated in mushroom farms. In Korea, the production of edible mushrooms was estimated to be 614,224 ton in 2013. Generally, about 5 kg of mushroom substrate is needed to produce 1 kg of mushroom, and consequently about 25 million tons of spent mushroom substrate (SMS) is produced each year in Korea. Because this massive amount of SMC is unsuitable for reuse in mushroom production, it is either used as garden fertilizer or deposited in landfills, which pollutes the environment. It is reasonably assumed that SMS includes different secondary metabolites and extracellular enzymes produced from mycelia on substrate. Three major groups of enzymes such as cellulases, xylanases, and lignin degrading enzymes are involved in breaking down mushroom substrates. Cellulase and xylanase have been used as the industrial enzymes involving the saccharification of biomass to produce biofuel. In addition, lignin degrading enzymes such as laccases have been used to decolorize the industrial synthetic dyes and remove environmental pollutions such as phenolic compounds. Basidiomycetes produce a large number of biologically active compounds that show antibacterial, antifungal, antiviral, cytotoxic or hallucinogenic activities. However, most previous researches have focused on therapeutics and less on the control of plant diseases. SMS can be considered as an easily available source of active compounds to protect plants from fungal and bacterial infections, helping alleviate the waste disposal problem in the mushroom industry and creating an environmentally friendly method to reduce plant pathogens. We describe extraction of lignocellulytic enzymes and antimicrobial substance from SMSs of different edible mushrooms and their potential applications.

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Improvement of Barrier Property of LDPE Food Packaging Film by Plasma Polymerization (플라스마 중합을 이용한 LDPE 식품포장 필름의 차단성 향상)

  • Kim, Kyoung-Seok;Cho, Dong-Lyun
    • Polymer(Korea)
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    • v.32 no.1
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    • pp.38-42
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    • 2008
  • Ultrathin films were coated on low density Polyethylene (LDPE) food packaging films by plasma polymerization of methane, acetylene, hexamethyldisiloxane (HMDSO), and HMDSO+oxygen to improve the barrier property of the LDPE films. The film coated in HMDSO +oxygen (flow rate: 0.6+ 9.0 SCCM) plasma at 40 W for 10 min showed the highest improvement in the barrier property against oxygen, reducing the permeability of oxygen as much as 18.6 times. The film coated in acetylene (flow rate 0.75 SCCM) plasma at 10 W for 10 min showed the highest improvement in the barrier property against carbon dioxide and moisture, reducing the permeability of carbon dioxide and moisture as much as 12.0 and 3.0 times, respectively. In addition, cherry tomato, cucumber, and mushroom (Flammulina velutipes) wrapped with the coated films were kept fresh $1.5{\sim}3.0$ times longer than those wrapped with an LDPE film.