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생돼지감자와 건조돼지감자 장아찌의 이화학적 특성

Physiochemical Characteristics of Raw and Dried Jerusalem Artichoke Jangachi

  • 강경규 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 최송이 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 김진숙 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 김기창 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 김경미 (농촌진흥청 국립농업과학원 농식품자원부)
  • Kang, Kyoung Kyu (Agro-Food Resources, National Academy of Agricultural Science, Rural Development Administration) ;
  • Choi, Songyi (Agro-Food Resources, National Academy of Agricultural Science, Rural Development Administration) ;
  • Kim, Jin Sook (Agro-Food Resources, National Academy of Agricultural Science, Rural Development Administration) ;
  • Kim, Gi Chang (Agro-Food Resources, National Academy of Agricultural Science, Rural Development Administration) ;
  • Kim, Kyung Mi (Agro-Food Resources, National Academy of Agricultural Science, Rural Development Administration)
  • 투고 : 2015.09.11
  • 심사 : 2015.10.08
  • 발행 : 2015.10.30

초록

본 연구는 절단 두께를 달리한 건조한 돼지감자로 장아찌를 제조하여 생돼지감자 장아찌와 저장 중 품질 특성을 분석하여 건조돼지감자의 활용 가능성을 검토하고자 하였다. 생돼지감자를 7, 10 mm로 절단하여 수분함량이 8%가 되도록 열풍 건조하였다. 간장 조미액으로 장아찌를 제조하여 저장기간(4주간)에 따른 이화학적 특성을 비교하였다. 건조돼지감자의 수화복원성은 7, 10 mm 두께로 건조한 시료 모두 건조 전 돼지감자 무게 대비 90% 이상 복원하였으나, 10 mm로 절단한 건조돼지감자가 7 mm로 절단한 돼지감자보다 420분으로 90% 이상 복원되는데 2배 이상의 시간이 소요되었다. 생돼지감자 장아찌의 경도는 저장기간이 지남에 따라 감소하였으나, 건조돼지감자 장아찌는 일정하게 유지되었다. 이는 건조과정 중 조직 연화 효소가 불활성화 된 것으로 판단된다. 장아찌의 염도와 당도는 저장기간이 지남에 따라 증가하는데, 생돼지감자의 경우 4주간에 걸쳐 급격히 증가하였다. 그러나 건조과정을 통해 조직이 변형된 건조돼지감자 장아찌는 숙성과 동시에 염의 탈수와 침투가 급격히 진행되어 저장 초기부터 평형이 이루어져 저장기간이 지나도 큰 변화가 일어나지 않았다. 돼지감자의 주요 성분인 fructan의 함량은 건조돼지감자 장아찌가 생돼지감자 장아찌보다 전반적으로 높은 경향을 나타내었으며, 저장 4주차에는 생돼지감자와 건조돼지감자 장아찌의 fructan 함량에 유의적인 차이가 없었다. 본 연구의 결과, 건조 돼지감자를 활용한 장아찌의 유용성분은 생돼지감자와 유의적인 차이가 없었으며, 건조돼지감자를 장아찌로 활용할 수 있는 가능성을 확인하였다. 건조돼지감자를 상품화하기 위해서는 향후 대량생산을 위한 제조방법의 표준화에 대한 연구가 요구된다.

Jerusalem artichoke is often stored poorly after harvesting due to its delicate skin. For this reason, Jerusalem artichoke is mainly distributed in the market as a dried material. In order to improve utilization of dried Jerusalem artichoke, we made Jangachi and analyzed physiochemical characteristics with raw Jerusalem artichoke Jangachi during storage. Raw Jerusalem artichoke was sliced into 7 and 10 mm slices and dried in hot air. After aging, we analyzed rehydration capacity, pH, hardness, salinity, sugar content, and fructan content of both. Dried Jerusalem artichoke sliced into 10 mm slices took over twice as long (420 min) to be rehydrated over 90% than 7 mm sliced (200 min) Jerusalem artichoke. In the case of raw Jerusalem artichoke, hardness showed a tendency to decline. Relatively, hardness of dried Jerusalem artichoke was measured consistently. After 4 weeks, salinity and sugar content were 3.63% and $41.23^{\circ}Brix$ in raw Jerusalem artichoke Jangachi, 3.47% and $37.05^{\circ}Brix$ in 7 mm dried Jerusalem artichoke, and 3.77% and $39.15^{\circ}Brix$ in 10 mm dried sample, respectively. As a result of this study, the possibility of dried Jerusalem artichoke as a pickle was confirmed.

키워드

참고문헌

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피인용 문헌

  1. 국우(菊芋) 증자가 혈당강하작용에 미치는 영향 vol.32, pp.5, 2017, https://doi.org/10.6116/kjh.2017.32.5.39
  2. Quality Characteristics of Jicama (Pachyrhizus erosus) Jangachi Prepared with Different Vinegars vol.34, pp.5, 2015, https://doi.org/10.9724/kfcs.2018.34.5.441
  3. Optimization of Potatoes in Soy Sauce as Prepared by the Sous-vide vol.34, pp.6, 2015, https://doi.org/10.9724/kfcs.2018.34.6.607