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Mycelial growth and wood decaying enzymatic activity analysis by various addition rates of oak powder in the liquid spawn of Lentinula edodes

참나무분 첨가에 따른 표고 액체종균의 균체생산 및 효소 활성

  • Kim, Jeong-Han (Mushroom Research Institute, Gyeonggi-do Agricultural Research & Extension Services) ;
  • Kang, Young-Ju (Mushroom Research Institute, Gyeonggi-do Agricultural Research & Extension Services) ;
  • Baek, Il-Sun (Mushroom Research Institute, Gyeonggi-do Agricultural Research & Extension Services) ;
  • Jeoung, Yun-Kyeoung (Mushroom Research Institute, Gyeonggi-do Agricultural Research & Extension Services) ;
  • Lee, Yong-Seon (Mushroom Research Institute, Gyeonggi-do Agricultural Research & Extension Services) ;
  • Cho, Hae-Seok (Chungwoon Mushroom Farm) ;
  • Lee, Young-Soon (Mushroom Research Institute, Gyeonggi-do Agricultural Research & Extension Services)
  • 김정한 (경기도농업기술원 버섯연구소) ;
  • 강영주 (경기도농업기술원 버섯연구소) ;
  • 백일선 (경기도농업기술원 버섯연구소) ;
  • 정윤경 (경기도농업기술원 버섯연구소) ;
  • 이용선 (경기도농업기술원 버섯연구소) ;
  • 조해석 (청운표고(주)) ;
  • 이영순 (경기도농업기술원 버섯연구소)
  • Received : 2018.03.19
  • Accepted : 2018.06.25
  • Published : 2018.06.30

Abstract

This study was carried out to establish a suitable method for liquid spawn production from Lentinula edodes. The optimum production of liquid spawn (OLS) was achieved using soybean meal medium (SMM) with 0.3% of 850 um oak powder and 10-day incubation period and 0.6 vvm aeration volume. OLS showed activities of laccase on ABTS agar plate and carboxymethyl cellulase (CM-cellulase) on CMC agar plate. In case of liquid spawn, fruiting-body development period was delayed approximately 1 day compared to that of sawdust spawn, however, the yield of 153 g per 1.2 kg polypropylene bag was similar to that of sawdust spawn.

표고 재배용 액체종균 배지조성은 대두박분 배지에 입도가 $850{\mu}m$이하인 참나무분 0.3% 첨가 시 균사체 건중량이 457 mg으로 다소 높았으며, Laccase 활성도는 참나무분 첨가율별 대두박분 배지에 큰 차이가 없었으나 Cellulase 활성도는 CMC Agar Plate에서 26.4 mm로서 참나무분 첨가율별 대두박분 액체종균 처리구중에서 가장 우수하였다. 액체종균의 통기량이 증가할수록 이산화탄소 발생량이 증가하여 배양 7일째 최대치를 나타내었으며 균사체 건중량은 10일째 3.0g/l로 가장 우수한 것으로 나타났다. 통기량이 증가할수록 이산화탄소 발생량, 균사체 건중량도 증가하였으며 0.6vvm 처리시 배지 증발율이 32%, 균사체 건중량이 3.5g/l로서 우수하였다. 선발된 액체종균을 톱밥 종균과 생산성 비교를 위하여 톱밥재배 봉지배지에 시험한 결과, 액체종균의 생육기간이 톱밥종균에 비해 1일 지연되었으나, 봉지당 유효 개체수와 수량에는 유의적인 차이가 없는 것으로 나타났다.

Keywords

References

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