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Inhibitory Effect of Pine Needle(Pinus densiflora S.) Extract on Potato Polyphenol Oxidase

감자 polyphenol oxidase에 대한 솔잎 추출물의 저해효과

  • 이민경 (동아대학교 식품과학부)
  • Published : 2006.08.30

Abstract

The inhibitory effect of pine needle (Pinus densiflora S.) on potato polyphenol oxidase (PPO) was investigated. The addition of the pine needle extract exhibited a higher inhibitory effect on the potato polyphenol oxidase activity than that of the citric acid or potassium sorbate. The enzyme activity was strongly inhibited in a pH range of 7.0-8.0. When the incubation time of reaction mixture was increased, the potato polyphenol oxidase activity was markedly inhibited. The pine needle extract inhibited the potato polyphenol oxidase non-competitively. And also the pine needle extract subjected to a heat treatment at $100^{\circ}C$ for 10 min or to an acid treatment at pH 2.0, 3.0, and 4.0 for 3 hours still retained inhibitory effect on potato polyphenol oxidase.

감자 polyphenol oxidase에 대한 솔잎 추출물의 저해효과가 조사 되었다. 솔잎 추출물은 anti-browning agents인 potassium sorbate나 citric acid보다도 더 강한 저해효과 를 나타냈으며 pH 7.0-8.0 사이에서 가장 강력한 저해효과가 있음을 알 수 있었다. 또한 반응시간이 증가 할수록 감자 polyphenol oxidase 활성은 현저하게 저해 되었으며 솔잎 추출물은 감자 polyphenol oxidase에 대해 비경쟁적인 저해를 하는 것으로 나타났다. 솔잎 추출물은 $100^{\circ}C$ 에서 10분간 열처리시에도 안정 하였으며 pH 2.0, 3.0, 4.0에서 3시간 처리시에도 여전히 감자 polyphenol oxidase 에 대한 저해효과를 보유하고 있어서 산과, 열에 비교적 안정한 물질임을 알 수 있었다.

Keywords

References

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