• Title/Summary/Keyword: lentinus edodes

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β-glucan and glucosamine contents in various cereals cultured with mushroom mycelia (버섯균사체를 배양시킨 몇 종의 곡물 중 베타글루칸과 glucosamine 함량)

  • Lee, Hui-Deok;Lee, Ga-Soon
    • The Korean Journal of Mycology
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    • v.37 no.2
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    • pp.167-172
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    • 2009
  • Mycelia of Pleurotus ostreatus, Phellinus linteus, Ganoderma lucidum and Lentinus edodes were cultured in the selected cereals to generate functionally active cereals. The optimum water contents for the mycelial growth were 50%(wt/wt) for brown rice, barley and soybean and 75% for wheat and corn, respectively. P. ostreatus grew well in the most cereals while the mycelial growth of P. linteus, G. lucidum and L. edodes in soybean were siginificantly retarded. The contents of β-glucan and glucosamine in the mycelial cereals were determined. Wheat cultured with mushroom mycelia showed high ß-glucan content. Especially, wheat with G. lucidum contained the highest value of 26.16%. Soybean cultured with G. lucidum showed two-fold increase in glucosamine content with 9.63% of total mass while wheat showed 7.91%. Overall, wheat cultured with G. lucidum was the best functional cereal in terms of β-glucan and glucosamine contents.

Study of Recovery Yield of Polysaccharide from Fruiting Body of Shiitake Mushroom (Lentinus edodes)

  • Lee, Hee-Hwan;Hong, Eock-Kee
    • 한국생물공학회:학술대회논문집
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    • 2005.04a
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    • pp.502-505
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    • 2005
  • This study was concentrated to investigate the dependency of recovery yield on the extraction conditions. From fruiting body, the extracted amount of polysaccharide was studied with various solvent. In order to maximize the yield, the optimum extraction conditions were elucidated with respect to solvent, temperature and time. In addition, the dialysis was applied to obtain the higher purity of polysaccharide with varying the exposure time.

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Investigation and Analysis of Current Protected Cultivation of Oak Mushroom (Lentinus edodes sing) in Korea (표고시설재배의 실태조사.분석)

  • 정동호;문보흠;손정익;이병일
    • Proceedings of the Korean Society for Bio-Environment Control Conference
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    • 1998.10a
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    • pp.63-65
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    • 1998
  • 최근, 생표고의 수요가 급증하고 있으며 주년적인 생산과 공급을 원활하게 하기 위해서 시설재배가 필수적으로 요구되고 있다. 1996년도에 있어 표고 골목은 8,433천㎥이었는데, 이 가운데 노지재배가 92%, 시설재배가 8%를 각각 차지하고 있으나 생산량에서는 노지재배가 90% 그리고 시설재배가 10%를 차지하고 있다. 또한 표고의 시설재배를 통하여 생산량은 약 20%, 생산액은 약 50% 각각 증가하여 소득 면에서도 기여하고 있다. (중략)

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Recognition of the Front/Back Side and the Stalk State of a mushroom(Lentinus Edodes L.) (표고 전후면 및 꼭지부 인식)

  • Hwang, Heon;Lee, Choong-Ho
    • Proceedings of the Korean Society for Bio-Environment Control Conference
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    • 1994.05a
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    • pp.98-101
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    • 1994
  • 표고는 다른 농산물에 비하여 품질등급을 결정하는 외관 특징들이 갓의 전후면에 걸쳐 복잡하게 분포하고 있어 자동 선별장치를 구현하기 위해서는 갓의 전후면 인식과 아울러 외관특징을 검출해야 한다. 특히 건조 표고의 경우 갓 바깥으로 튀어나온 꼭지부의 존재 여부 및 상태가 갓의 크기, 모양 및 후면 내피의 말린 정도를 검색하는 데 큰 영향을 미친다. (중략)

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Investigation and Analysis of Protected Cultivation of Oak Mushroom (표고시설재배의 실태조사 및 분석)

  • 이병일;손정익;김목원;홍순길
    • Proceedings of the Korean Society for Bio-Environment Control Conference
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    • 1999.11a
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    • pp.221-224
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    • 1999
  • 표고(Lentinus edodes (Berk.) Sing.)는 송이과 Tricholomataceae에 속하는 식용 버섯으로서, 동북아시아 지역에서 가장 인기 있는 재배 버섯이다. 표고의 수요와 생산량을 매년 꾸준히 증가하고 있고, 1985년 표고 생산량은 880톤, 87년 1,080톤, 89년 1,530톤, 91년 1,761톤, 92년의 표고의 재배면적은 397,340평이고, 생산량은 2,253톤이며 금액으로 375억에 이르고 있다. (중략)

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Properties of Wood-Based Board Prepared with Bed-Logs Decayed by Oak Mushroom(Lentinus edodes) (표고 폐골목으로 제조한 목질보드의 성질)

  • Choi, Yong-Soon;Hwang, Won-Jung;Han, Tae-Hyung;Kim, Nam-Hun;Kwon, Jin-Heon
    • Journal of Forest and Environmental Science
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    • v.14 no.1
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    • pp.138-144
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    • 1998
  • To provide further information for reutilization of the bed-logs decayed by oak mushroom(Lentinus edodes), the properties of wood-based board prepared with mixed materials of normal wood and bed-logs were examined. Wood fibers in bed-logs showed different morphology from normal wood fibers, that is, shorter length and rough surface. Thickness swelling increased with increasing mixing ratio of bed-log. On the other hand, modulus of rupture(MOR) in bending strength decreased. In products, the visual surface of board prepared from higher mixing rate of bed-log chips was smooth. Consquently, it is considered that the optimum mixing rate of bed-log to normal wood is the range of 25-50% and the bed-log can be used for raw material of board instead of normal wood.

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Growth Inhibition of Mushroom Pathogen by Bacillus sp. HJ 57 (Bacillus sp. HJ 57에 의한 버섯 병원균주의 생육억제)

  • Seo, Kwon-Il;Gal, Sang-Won;Yee, Sung-Tae;Park, Kyung-Wuk;Lee, Sang-Won
    • Journal of Life Science
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    • v.22 no.6
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    • pp.799-806
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    • 2012
  • Approximately 80 species of bacteria were isolated from the fermented mushroom first and the HJ-57 antibacterial micro-organism was selected to the final isolation bacteria. It has a high degree of CMCase, amylase, and protease activity as well as high antibacterial activity against mushroom pathogenic bacteria without affecting the growth and development of Flammulina velutipes and Lentinus edodes mushrooms. The finally selected HJ-57 antibacterial micro-organism was identified as Bacillus sp. HJ-57. The initial pH for culture was pH7 and its optimum culture temperature was $35^{\circ}C$. The antibacterial material produced by Bacillus sp. HJ-57 showed a little antibacterial activity even in the 12 hr of culture, but showed the highest antibacterial activity in the 36~48 hr of culture. The HJ-57 antibacterial micro-organism also showed a high antibacterial activity against mushroom pathogenic bacteria and molds in the corn cob contained culture medium is used in Flammulina velutipes cultivators.

Increase in antifungal activity by the combination of tolaasin and its analogue peptides (톨라신류 펩티드 혼합처리에 의한 항진균 활성의 증가)

  • Yun, Yeong-Bae;Lee, Hyoung-Jin;Kim, Young-Kee
    • Journal of Applied Biological Chemistry
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    • v.61 no.1
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    • pp.69-73
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    • 2018
  • Oak mushroom (Lentinus edodes) is cultivated by using oak logs and sawdust medium. Green mold (Trichoderma) infection on these media severely suppresses the growth of oak mushroom. Usages of antibiotics and chemicals are not generally allowed to control of green mold since the mushroom is a fresh food. Tolaasin and its analogues, peptide toxins secreted by Pseudomonas tolaasii, have the antifungal activity and they have been successful to control the green mold disease. When the green mold, Trichoderma harzianum H1, was cultured in the presence of these toxins, the growth of fungus was effectively suppressed. In sawdust media, when the bacterial culture supernatants were sprayed on the aerial hyphae of green molds, the fungal growth was completely suppressed. Particularly, the antifungal activity was greatly increased by the combined culture extracts of P. tolaasii 6264 and HK11 strains. Therefore, these bacterial strains and their peptide toxins were able to suppress the growth of green molds and these can be good candidates to prevent from Trichoderma disease in oak mushroom cultivation.

Neuro-Net Based Automatic Sorting And Grading of A Mushroom (Lentinus Edodes L)

  • Hwang, H.;Lee, C.H.;Han, J.H.
    • Proceedings of the Korean Society for Agricultural Machinery Conference
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    • 1993.10a
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    • pp.1243-1253
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    • 1993
  • Visual features of a mushroom(Lentinus Edodes L) are critical in sorting and grading as most agricultural products are. Because of its complex and various visual features, grading and sorting of mushrooms have been done manually by the human expert. Though actions involved in human grading looks simple, a decision making undereath the simple action comes form the results of the complex neural processing of the visual image. And processing details involved in the visual recognition of the human brain has not been fully investigated yet. Recently, however, an artificial neural network has drawn a great attention because of its functional capability as a partial substitute of the human brain. Since most agricultural products are not uniquely defined in its physical properties and do not have a well defined job structure, a research of the neuro-net based human like information processing toward the agricultural product and processing are widely open and promising. In this pape , neuro-net based grading and sorting system was developed for a mushroom . A computer vision system was utilized for extracting and quantifying the qualitative visual features of sampled mushrooms. The extracted visual features and their corresponding grades were used as input/output pairs for training the neural network and the trained results of the network were presented . The computer vision system used is composed of the IBM PC compatible 386DX, ITEX PFG frame grabber, B/W CCD camera , VGA color graphic monitor , and image output RGB monitor.

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