Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Effect of Ripening Conditions on Quality of Winter Squash 'Bochang'

후숙조건에 따른 단호박 '보짱'의 품질특성

  • Park, Do-Su (Department of Horticulture, Kangwon National University) ;
  • Tilahun, Shimeles (Department of Horticulture, Kangwon National University) ;
  • Hyun, Jae-Young (Department of Horticulture, Kangwon National University) ;
  • Kwon, Hye-Soon (Food safety Research Institute, National Agricultural Cooperative Federation) ;
  • Jeong, Cheon-Soon (Department of Horticulture, Kangwon National University)
  • Received : 2016.01.29
  • Accepted : 2016.04.07
  • Published : 2016.04.30
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Abstract

Ripening conditions of the winter squash 'Bochang' were evaluated. Soluble solids contents increased as the ripening duration was prolonged and with higher temperature. After harvest, the Hunter 'b' value of the skin was 2.42. At 25 and $30^{\circ}C$, the Hunter 'b' values were recorded at approximately 6.91 and 7.56, respectively. At $35^{\circ}C$, the Hunter 'b' value was increased to about 7.79 on day 9. Furthermore, at $35^{\circ}C$, the appearance quality was reduced with a yellowing phenomenon of the pericarp observed after 9 days. The starch contents also decreased with higher temperature, and sucrose contents increased in all ripening conditions with a longer period and higher temperature. Overall, these results indicate that ripening conditions of $25^{\circ}C$ for 18-21 days and at $30^{\circ}C$ for 12-15 days are suitable for the optimum ripening of winter squash.

본 연구는 단호박 유통을 위한 최적 후숙 조건을 구명하기 위해 수행하였다. 가용성고형물 함량은 수확 직후 $6.0^{\circ}Bx$에서 후숙 기간이 길어짐에 따라 증가하였다. 후숙 온도가 높을수록 가용성 고형물 함량이 높게 나타났다. 과피 및 과육의 색차변화는 Hunter 'b'값을 측정한 결과 과피는 수확 직후 2.42에서 후숙기간 동안 증가하여 후숙 18일 $25^{\circ}C$ 조건은 6.91, $30^{\circ}C$ 조건은 7.56으로 나타났다. $35^{\circ}C$의 경우 후숙 9일 7.79로 과피 황화현상이 발생하여 외관품질이 저하되었다. 녹말함량은 후숙 온도가 높을수록 낮은 함량을 보였다. 자당 함량은 후숙 기간이 길어질수록 모든 온도조건에서 증가하였다. 이상의 결과를 종합하면 $25^{\circ}C$ 조건에서는 18-21일, $30^{\circ}C$는 12-15일간 후숙이 적합하다고 판단된다.

Keywords

References

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