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Food Functional Properties of Pleurotus eryngii Cultivated with Different Wavelength of LED Lights

LED광의 파장을 달리하여 재배한 새송이버섯의 식품기능적 특성

  • Kim, Do-Hee (Department of Food Science and Technology, Kyungpook National University) ;
  • Choi, Hye-Jin (Department of Food Science and Technology, Kyungpook National University) ;
  • Jo, Woo-Sik (Department of Agricultural Environment, Kyungbuk Agricultural Technology Administration) ;
  • Moon, Kwang-Deog (Department of Food Science and Technology, Kyungpook National University)
  • 김도희 (경북대학교 식품공학부) ;
  • 최혜진 (경북대학교 식품공학부) ;
  • 조우식 (경상북도농업기술원 농업환경연구과) ;
  • 문광덕 (경북대학교 식품공학부)
  • Received : 2012.07.30
  • Accepted : 2012.09.21
  • Published : 2012.10.30

Abstract

The food functional properties of Pleurotus eryngii cultivated with different wavelengths of light-emitting diode (LED) light were analyzed in this study. The levels of total soluble solids of Pleurotus eryngii increased with all the LED lights, except mixed LED light ($B^*R$, $B^*G$ and $R^*G$). Thirty one kinds of components were detected by analyzing the free amino acids. The total free amino acid contents had a slightly higher tendency in the control group, but the ratios of eight essential amino acids among the total amino acids of Pleurotus eryngii cultivated under all the LED lights, including the blue light (blue, $B^*R$, $B^*G$ and $B^*R^*G^*U$) and the green light, were higher than that in the control group. K was the highest-content of mineral, and Mn was the lowest-content. The Ca content increased through cultivation under all the LED lights, except the blue light, but the Fe content (under the green and $B^*R$ lights), K content (under the red and UV-A lights) and Mg content (under the $R^*G$, UV-A and red lights) increased under the exclusive LED light. The total phenolic compounds increased by cultivation under all the LED lights, except the UV-A and mixed lights ($R^*G$ and $B^*R^*G^*U$). The DPPH radical scavenging activity was also improved by all the LED lights, except the mixed light ($R^*G$).

LED광의 파장을 달리하여 재배한 새송이버섯의 식품기능적 특성과 무기질 및 유리아미노산의 함량을 분석하였다. 총 가용성 고형분의 함량은 청적, 청녹, 적녹 혼합광을 제외한 모든 구에서 대조구에 비해 유의적으로 높게 나타났다. 유리아미노산 분석 결과, 31종의 아미노산이 검출되었으며 총 유리아미노산은 대조구에서 함량이 다소 높게 나타났으나 8종 필수 아미노산의 함량은 청색광을 포함한 모든 구(Blue, $B^*R$ $B^*G$, $B^*R^*G^*U$) 및 녹색광에서 재배한 구에서 대조구보다 높게 나타났다. 아미노산 중 arginine, glutamic acid, alanine, ornithine, lysine 등의 순으로 함량이 높았으며, ${\beta}$-alanine, ${\beta}$-aminoisobutyric acid, 1-methylhistidine, citrulline 등은 낮은 함량을 나타내었다. 새송이버섯의 무기질은 K이 대부분을 차지하였고, Na, Mg, Ca, Fe의 순으로 그 함량이 높았으며 Mn의 함량이 가장 낮은 것으로 나타났다. Ca은 청색광을 제외한 모든 LED 처리구에서 대조구보다 그 함량이 유의적으로 증가하였으며, Fe은 녹색광과 청적 혼합광, K은 적색광과 UV-A, Mg은 적색광, UV-A, 적녹 혼합광에서 함량 증진이 나타났다. 총 페놀 함량은 청색광, 적색광, 녹색광, 청적 및 청녹 혼합광에서, DPPH radical 소거능은 적녹 혼합광을 제외한 모든 구에서 대조구보다 유의적으로 높은 것으로 나타났다.

Keywords

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