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2014 Vol.32, Issue 6 Preview Page
Effects of Far-infrared Irradiance at Night on Quality of Sunlight Dried Red Pepper (Capsicum annuum L.) in Plastic Houses

비닐하우스 이용 고추 건조 시 야간 원적외선등 조사량이 품질에 미치는 영향

Guang-Jae Lee1,2*
,
Si-Dong Kim1
,
Jung-Beom Yoon2
,
Ki-Yeol Lee1
,
Kyu-Hong Choi2
이 광재1,2*
,
김 시동1
,
윤 정범2
,
이 기열1
,
최 규홍2
1Chungcheongbuk-do Agricultural Research & Extension Services
2National Academy of Agricultural Science, Rural Development Administration of Korea
1충청북도농업기술원
2농촌진흥청 국립농업과학원
*교신저자. *Corresponding Author. 
31 December 2014. pp. 819-826
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Abstract

This study was carried out to investigate the effects of night-time far-infrared irradiance quality of red pepper dried in greenhouses. This study involved 4 treatments: sunlight alone (control), or sunlight plus nightly far-infrared irradiation at 250 W･6.6 m-2 (250 W･6.6 m-2), far-infrared irradiation at 250 W･3.3 m-2 (250 W･3.3 m-2), or far-infrared irradiation 500 W･3.3m-2 (500 W･3.3 m-2). The drying periods were 12 days in 500 W･3.3 m-2 and 250 W･3.3 m-2, and 14 days in 250 W･6.6 m-2, and 15 days in the control. The daytime temperature was same among the treatments. The lowest temperature was at 23.8°C in control, and 29.5-37.2°C in far-infrared irradiation treatments. The marketable yield was 7-14% higher in far-infrared irradiation treatments compared to the control. The rate of marketability was higher in far-infrared irradiation treatments (93.6-96.3%) than in the control (87.0-87.5%). The American Spice Trade Association (ASTA) value was greatest in the 250 W･3.3 m-2 treatment, followed by 250 W･6.6 m-2, then 500 W･3.3 m-2, and finally the control. Capsaicinoid content showed no regular trend among the treatments. Our results provide an optimized method for reducing drying time of red pepper under sunlight, and improving the quality of dried red pepper.

Keywords
ASTA
browning
capsaicin
redness
water loss

본 연구는 원적외선등 적정 조사량이 상품성과 건조 효율에 미치는 효과를 구명하기 위하여 실시하였다. 원적외선등 조사량은 대조구(관행), 250W･6.6m-2, 250W･3.3m-2, 500W･3.3m-2 등 4처리를 두었다. 고추 건조기간은 500W･3.3m-2와 250W･3.3m-2는 12일, 250W･6.63m-2는 14일, 관행은 15일이었다. 주간 온도는 처리 간에 동일하였으며, 야간 최저온도는 원적외선등 처리구가 29.5-37.2°C, 관행이 23.8°C로 가장 낮았다. 건고추 상품 수량은 원적외선등 250W･3.3m-2 처리에서 가장 우수하였으며, 원적외선등 조사 처리구가 대조구보다 7-14% 증가하였다. 상품과율은 원적외선등 조사 처리구에서 93.6-96.3%로 대조구 87.0-87.5%보다 높았다. 고추의 ASTA 값은 250W･3.3m-2, 250W･6.6m-2, 500W･3.3m-2, 관행 순으로 높았다. 캡사이신 capsaicin 함량은 처리 간에는 일정한 경향을 나타내지 않았다. 본 실험에서 얻어진 결과는 태양초 건조 기간 단축뿐만 아니라 고추의 품질 향상에 기여하리라 기대된다.

키워드
ASTA
갈변
캡사이신
적색도
수분감모
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Information
  • Publisher :KOREAN SOCIETY FOR HORTICULTURAL SCIENCE
  • Publisher(Ko) :원예과학기술지
  • Journal Title :Horticultural Science and Technology
  • Journal Title(Ko) :원예과학기술지
  • Volume : 32
  • No :6
  • Pages :819-826
  • Received Date : 2014-05-22
  • Revised Date : 2014-07-21
  • Accepted Date : 2014-08-02
  • DOI :https://doi.org/10.7235/hort.2014.14095
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