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Changes of asparagine content in potato (Solanum tuberosum L.) tuber during storage

저장 중 감자 아스파라진 함량의 변화

  • 진용익 (농촌진흥청 국립식량과학원 고령지농업연구센터) ;
  • 조지홍 (농촌진흥청 국립식량과학원 고령지농업연구센터) ;
  • 장동칠 (농촌진흥청 국립식량과학원 고령지농업연구센터) ;
  • 임주성 (농촌진흥청 국립식량과학원 고령지농업연구센터) ;
  • 박영은 (농촌진흥청 국립식량과학원 고령지농업연구센터) ;
  • 유홍섭 (농촌진흥청 국립식량과학원 고령지농업연구센터) ;
  • 정진철 (농촌진흥청 국립식량과학원 고령지농업연구센터) ;
  • 박경훈 (농촌진흥청 국립농업과학원 유해생물팀) ;
  • 정일민 (건국대학교 응용생물과학과)
  • Received : 2012.11.16
  • Accepted : 2012.11.30
  • Published : 2012.12.31

Abstract

In order to research changes of asparagine content according to stage after harvest to storage, it was analysed asparagine content of potato tuber and potato sprout. The results of the asparagine content in potato cultivars after harvest ranked in cv. Superior, cv. Gahwang, cv. Atlantic and cv. Goun in descending order. The content of asparagine in potato was approximately 1300 mg/100g (D.W.) The changes the asparagine content according to storage condition and the difference of asparagine between tuber and sprout can be summarized as follows. In the asparagine content of potato cultivars, Little variation in the content was observed while potato tubers were stored at $4^{\circ}C$. However, after 3 months of storage at $10^{\circ}C$, the content increased by 9.7%, indicating that the content increases as the storage temperature and period increases. The content of asparagine also increased during sprouting of potato tubers. In the sprout, the proximal region contained 21% higher content of asparagines than the distal region, which suggests that the sprout develops with the increasing of the content of asparagines.

수확 후 저장하면서 감자에 함유된 아스파라진 함량의 변화를 연구하기 위하여 수확 후, 저장 중, 감자싹의 아스파라진 함량을 분석하였다. 수확 후 감자 품종별 아스파라진 함량은 수미 가황 대서 고운 품종의 순으로 높았다. 감자 품종에 함유된 아스파라진 함량은 건물중 기준 평균 1300 mg/100g이었다. 저장 조건에 따른 아스파라진 변화를 분석하고 괴경과 싹을 구분하여 아스파라진 함량을 분석한 결과를 요약하면 다음과 같다. 아스파라진의 함량은 $4^{\circ}C$에 저장할 경우에는 저장기간에 관계없이 큰 변화가 없는 경향이었지만, $10^{\circ}C$에서는 3개월간 저장하였을 때 9.7% 증가하여 저장온도가 높고 저장기간이 길어질수록 아스파라진의 함량은 증가하는 경향을 보였다. 감자싹의 위치별 아스파라진의 함량은 괴경과 맞닿은 아래부분의 싹이 상부의 싹에 비하여 21% 높았다. 휴면이 타파되고 맹아가 출현하여 싹이 발달하는 과정에서 아스파라진의 함량은 증가하는 것으로 생각된다.

Keywords

References

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