• 제목/요약/키워드: Merulius tremellosus

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아교버섯 형질전환체가 생산한 리그닌분해 고정화효소에 의한 염료 탈색 (Decolorization of a Dye by Immobilized Lignin Degrading Enzymes Generated from Transformants of Merulius tremellosus Fr.)

  • 민동숙;유선화;김명길;최형태
    • 미생물학회지
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    • 제48권3호
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    • pp.225-227
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    • 2012
  • 백색부후균류가 가지는 리그닌 분해효소들은 기질특이성이 넓기 때문에 다양한 난분해성 화합물들을 분해할 수 있다. 본 실험에서는 3가지 다른 방법을 사용하여 laccase와 manganese peroxidase가 각각 도입된 아교버섯 형질전환체의 배양 상등액 효소를 고정화 효소로 만들어 대표적 염료의 하나인 Remazol Brilliant Blue R (RBBR)의 탈색을 실험하였다. 그 결과 알긴산을 효소 용액과 직접 반응하여 만든 고정화 효소에서 48시간 반응 후 약 75% 탈색을 보였다. 비록 한번 사용했던 고정화 효소를 재사용하였을 경우 탈색능이 10-15% 정도 감소되었으나 본 실험에서 제시한 방법이 리그닌 분해효소의 고정화 효소 활용에 기여할 것으로 기대한다.

한국산 고등균류의 분류학적 연구 ( I ) (Taxonomic Investigations on Korean Higher Fungi ( I ))

  • 임정한;김병각
    • 생약학회지
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    • 제3권1호
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    • pp.11-20
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    • 1972
  • To investigate the fungal flora in Korea, the basidiomycetes and other higher fungi were collected and examined. Five species Coriolus pinsitus, Hirshioporus fusco-violaceus, Hymenurhaete intricata, Merulius tremellosus, Steccherinum ochraceum, were newly added to the list of previously recorded Korean higher fungi, the total amounting to 386 species.

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Biodegradation of Endocrine-Disrupting Phthalates by Pleurotus ostreatus

  • Hwang, Soon-Seok;Choi, Hyoung-Tae;Song, Hong-Gyu
    • Journal of Microbiology and Biotechnology
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    • 제18권4호
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    • pp.767-772
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    • 2008
  • Biodegradation of endocrine-disrupting phthalates [diethyl phthalate (DEP), dimethyl phthalate (DMP), butylbenzyl phthalate (BBP)] was investigated with 10 white rot fungi isolated in Korea. When the fungal mycelia were added together with 100 mg/l of phthalate into yeast extract-malt extract-glucose (YMG) medium, Pleurotus ostreatus, Irpex lacteus, Polyporus brumalis, Merulius tremellosus, Trametes versicolor, and T. versicolor MrP1 and MrP13 (transformant of the Mn-repressed peroxidase gene of T. versicolor) could remove almost all of the 3 kinds of phthalates within 12 days of incubation. When the phthalates were added to 5-day pregrown fungal cultures, most fungi except I. lacteus showed the increased removal of the phthalates compared with those of the non-pregrown cultures. In both culture conditions, p. ostreatus showed the highest degradation rates for the 3 phthalates tested. BBP was degraded with the highest rates among the 3 phthalates by all fungal strains. Only 14.9% of 100 mg/I BBP was degraded by the supernatant of P. ostreatus culture in YMG medium in 4 days of incubation, but the washed or homogenized mycelium of P. ostreatus could remove 100% of BBP within 2 days even in distilled water, indicating that the initial BBP biodegradation by P. ostreatus may be attributed to mycelium-associated enzymes rather than extracellular enzymes. The biodegradation rate of BBP by the immobilized cells of P. ostreatus was almost same as that in the suspended culture. The estrogenic activity of 100 mg/I DMP decreased during biodegradation by P. ostreatus.