이천 게걸무, 강화 순무, 조선무의 화학적 특성 및 효소활성

Chemical Characteristics and Enzyme Activities of Icheon Ge-Geol Radish, Gangwha Turnip, and Korean Radish

  • 김행란 (농업과학기술원 농촌자원개발연구소) ;
  • 이지현 (농업과학기술원 농촌자원개발연구소) ;
  • 김양숙 (농업과학기술원 농촌자원개발연구소) ;
  • 김경미 (농업과학기술원 농촌자원개발연구소)
  • Kim, Haeng-Ran (Rural Resources Development Institute, National Institute of Agricultural Science and Technology, RDA) ;
  • Lee, Ji-Hyun (Rural Resources Development Institute, National Institute of Agricultural Science and Technology, RDA) ;
  • Kim, Yang-Suk (Rural Resources Development Institute, National Institute of Agricultural Science and Technology, RDA) ;
  • Kim, Kyung-Mi (Rural Resources Development Institute, National Institute of Agricultural Science and Technology, RDA)
  • 발행 : 2007.06.30

초록

본 연구에서는 이천 게걸무, 강화 순무 및 조선무의 품질 특성을 비교 분석하였다. 일반성분의 경우, 수분 함량은 이천 게걸무 87.78%, 강화 순무 92.73% 및 조선무 91.45%로 게걸무가 다른 무에 비하여 낮았다. 반면에 조단백, 조섬유 및 조회분 함량은 이천 게걸무가 강화 순무와 조선무에 비하여 약 1.7-1.8배, 1.2-1.6배 및 2.0-2.4배 높았다. 식이섬유함량은 이천 게걸무 11.32%, 강화 순무 13.26% 및 조선무 14.20%로 게걸무가 다른 무에 비하여 낮았다. 무기질 함량의 경우, 게걸무의 Mg, K, Ca 함량이 다른 무에 비하여 높았으며 P, Zn, Fe 함량은 다른 무와 유의적인 차이가 없었다. 가수분해 효소로서 소화와 관련된 ${\alpha}-amylase$활성의 측정 결과 이천 게걸무 9.97 unit, 강화 순무 14.87 unit 및 조선무 18.99 unit으로 나타났다. Protease 활성의 경우, 알칼리성은 이천 게걸무와 조선무가 각각 3.02 PU, 3.10 PU의 유사한 수준으로 순무에 비하여 높았고, 산성 protease 활성에서는 게걸무가 가장 높았다. 무의 매운맛 성분 및 기능성 관련 물질로 알려진 myrosinase 활성은 이천 게걸무가 36,990.81 unit으로 강화 순무나 조선무보다 높았다. 결론적으로 이천 게걸무는 강화 순무나 조선무에 비하여 조단백, 회분, 조섬유 및 무기질 중 Na, Mg, K, Ca의 함량이 높고 protease 활성과 myrosinase 활성이 높았다.

For this investigation, we analyzed the chemical characteristics and enzyme activities of Icheon Ge-Geol radish, Gangwha turnip, and Korean radish. Regarding their proximate compositions, the water contents of the Icheon Ge-Geol radish, Gangwha turnip, and Korean radish were 87.78, 92.73, and 91.45%, respectively. The crude protein, crude fiber, and ash contents of the Icheon Ge-Geol radish were 1.35, 1.11, and 1.55%, respectively, which were much higher than the contents of the other samples; however, total dietary fiber was significantly lower. For mineral content, the magnesium, potassium, and calcium levels of the Icheon Ge-Geol radish were higher than the other samples. With regards to the enzyme activities of the samples, the protease and myrosinase activities of the Icheon Ge-Geol radish were higher than in the other samples. For ${\alpha}-amylase$ activity, the Korean radish showed the strongest activity (18.99 units/g of sample), followed by the Gangwha turnip and Icheon Ge-Geol radish.

키워드

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