Journal of Mushroom (한국버섯학회지)

The Korean Society of Mushroom Science (한국버섯학회)
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Physico-chemical characteristics and antioxidant activities in oyster mushroom (Pleurotus ostreatus) cultivated with liquid spawn

액체종균으로 배양된 느타리버섯(Pleurotus ostreatus)의 이화학적 특성 및 항산화 활성

  • Lee, Soo-Jung (Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Kim, Hun-Hwan (Department of Food Science and Nutrition, Gyeongsang National University) ;
  • Kim, Seon-Ho (Guydam mushroom Co., Ltd.) ;
  • Kim, Sung-Hee (Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Sung, Nak-Ju (Department of Food Science and Nutrition, Gyeongsang National University)
  • 이수정 (경상대학교 농업생명과학연구원) ;
  • 김훈환 (경상대학교 식품영양학과) ;
  • 김선호 ((주)귀담버섯) ;
  • 김성희 (경상대학교 농업생명과학연구원) ;
  • 성낙주 (경상대학교 식품영양학과)
  • Received : 2018.11.13
  • Accepted : 2019.03.19
  • Published : 2019.03.31
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Abstract

The physicochemical characteristics of oyster mushrooms (Pleurotus ostreatus) cultivated using liquid spawn (MLS) were compared with those of commercial mushrooms cultivated using solid spawn. The color intensity of the two types of mushrooms showed no remarkable difference. The hardness of the MLS-cultivated mushrooms was significantly higher, but their moisture content (86.80%) was significantly lower than that of the commercial mushrooms. Mineral contents in MLS-cultivated mushrooms (421.17 mg/100 g) were significantly higher than those in the commercial mushrooms (333.26-362.78 mg/100 g); in particular, the potassium (K) content was the most abundant in the former. The amino acid content in the MLS-cultivated mushrooms (4,695.22 mg/100 g) was about 1.4-2.0 times that in the commercial mushrooms. The essential amino acid contents and sum of aspartic acid and glutamic acid were higher in the MLS-cultivated mushrooms than in the commercial mushrooms. The ${\beta}-glucan$ content in the MLS-cultivated mushrooms was 1.1-2.3 times higher than that in the commercial mushrooms. The total phenol and flavonoid contents and the DPPH and ABTS radical-scavenging activities of the MLS-cultivated mushrooms were significantly higher than those of the commercial mushrooms; however, the reducing power showed an opposite trend. Therefore, MLS-cultivated mushrooms contained higher amounts of valuable components and higher antioxidant activities than commercial mushrooms.

액체종균으로 재배된 느타리버섯의 품질특성을 평가하기 위해 고체종균으로 재배된 시판 버섯과 비교한 결과, 버섯의 색도는 두드러진 차이가 없었다. 버섯의 경도는 액체종균으로 재배된 느타리버섯(MLS)이 시판 버섯에 비해 유의적으로 높았다. 버섯의 수분 함량은 MLS(86.80%)가 시판 버섯에 비해 유의적으로 낮았다. 무기질 함량은 MLS(421.17 mg/100 g)에서 시판 버섯(333.26~362.78 mg/100 g)에 비해 유의적으로 많았으며, 특히 칼륨(K)의 함량이 가장 많았다. 아미노산의 함량은 MLS(4,695.22 mg/100 g)가 시판 버섯의 1.4~2.0배 수준이었으며, MLS는 필수 아미노산 및 aspartic acid와 glutamic acid의 함량이 시판 버섯에 비해 높은 경향이었다. MLS의 ${\beta}-glucan$ 함량은 시판 버섯에 비해 1.1~2.3배 정도 높은 수준이었다. 총 페놀 및 플라보노이드 함량은 MLS에서 시판 버섯에 비해 유의적으로 높았다. DPPH 및 ABTS 라디칼 소거활성은 MLS에서 시판 버섯에 비해 유의적으로 높았으나, 환원력은 상반된 경향이었다. 따라서, MLS는 고체종균으로 재배된 시판 버섯에 비해 유용한 성분의 함량이 더 많고 항산화 활성이 우수한 것으로 평가된다.

Keywords

Table 1. Color intensity of oyster mushroom (Pleurotus ostreatus) cultivated with liquid spawn experimentally and cultivated with solid spawn commercially

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Table 2. Textural characteristics of oyster mushroom (Pleurotus ostreatus) cultivated with liquid spawn experimentally and cultivated with solid spawn commercially

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Table 3. Proximate composition of oyster mushroom (Pleurotus ostreatus) cultivated with liquid spawn experimentally and cultivated with solid spawn commercially

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Table 4. Mineral contents of oyster mushroom (Pleurotus ostreatus) cultivated with liquid spawn experimentally and cultivated

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Table 5. Contents of composition amino acids of oyster mushroom (Pleurotus ostreatus) cultivated with liquid spawn experimentally and cultivated with solid spawn commercially

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Table 6. Content of glucan of oyster mushroom (Pleurotus ostreatus) cultivated with liquid spawn experimentally and cultivated with solid spawn commercially

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Table 7. Content of total phenols and flavonoids of oyster mushroom (Pleurotus ostreatus) cultivated with liquid spawn experimentally and cultivated with solid spawn commercially

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Table 8. Effective concentration values for antioxidant activities in 80% methanol extracts of oyster mushroom (Pleurotus ostreatus) cultivated with liquid spawn experimentally and cultivated with solid spawn commercially

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