Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Effects of Drying Methods on Quality of Red Pepper Powder

건조방법에 따른 고춧가루의 품질특성

  • Lim, Yong-Re (Dept. of Food Science and Technology, Chungbuk National University) ;
  • Kyung, Ye-Na (Dept. of Food Science and Technology, Chungbuk National University) ;
  • Jeong, Heon-Sang (Dept. of Food Science and Technology, Chungbuk National University) ;
  • Kim, Hae-Yong (Dept. of Food Science and Nutrition, Yong In University) ;
  • Hwang, In-Guk (Korean Food & Culture Division, Rural Development Administration) ;
  • Yoo, Seon-Mi (Korean Food & Culture Division, Rural Development Administration) ;
  • Lee, Jun-Soo (Dept. of Food Science and Technology, Chungbuk National University)
  • 임용래 (충북대학교 식품공학과) ;
  • 경예나 (충북대학교 식품공학과) ;
  • 정헌상 (충북대학교 식품공학과) ;
  • 김혜영 (용인대학교 식품영양학과) ;
  • 황인국 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 유선미 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 이준수 (충북대학교 식품공학과)
  • Received : 2012.05.22
  • Accepted : 2012.08.06
  • Published : 2012.09.30
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Abstract

Red pepper (Capsicum annuum L.) powder is widely used as a spice and flavor ingredient in the food industry. It is well known that during the drying process red pepper undergoes physico-chemical and nutritional changes. The objective of this study was to investigate the quality of red pepper powder according to drying method. Red pepper was dried by far-infrared drying, hot air drying, and polyethylene (PE) house drying. Average moisture content of dried red pepper powder from the three different drying methods was $12.5{\pm}0.3%$. The pH level slightly increased from 4.93 before drying to 5.00~5.54 after drying. Contents of capsaicinoids were highest (224.40 mg/100 g) in the PE house drying method and lowest (191.87 mg/100 g) in the hot air drying ($70^{\circ}C$) method. However, capsaicinoid contents were not significantly different among the various drying methods. Vitamin C content decreased as temperature increased. Drying conditions, particularly temperature, lead to loss of vitamin C in red pepper, resulting in quality degradation. Taken together, these results demonstrate that the content of vitamin C, one of the major factors affecting pepper powder quality, was affected by drying temperature.

본 연구에서는 건조방법에 따른 고춧가루의 품질 변화를 비교하기 위하여 한 가지 품종의 고추를 PE House 건조, 열풍건조, 원적외선 방법을 이용하여 건조한 다음, 건조조건별로 고춧가루의 수분함량 변화, pH, ASTA value 및 capsaicinoids와 vitamin C의 함량을 조사하였다. 건조 후 고춧가루의 수분함량은 12.05~14.01% 함유한 것으로 나타났으며, pH는 건조 전 생고추인 4.93보다 다소 높은 5.00~5.54를 나타내었다. 고춧가루의 매운맛을 나타내는 총 capsaicinoids의 capsaicinoids의 함량은 PE House 건조에서 224.40 mg/100 g으로 가장 높게 나타났으며, 열풍 $70^{\circ}C$ 건조에서 191.87 mg/100g으로 가장 낮게 나타났다. 하지만 건조방법에 따른 capsaicinoids 함량이 유의적 차이를 보이지 않았기 때문에, 매운맛 함량의 변화는 큰 차이를 나타내지 않았다. 고춧가루의 대표적 항산화제인 vitamin C 함량은 다른 건조방법 및 조건에 비해 PE House, 열풍 $60^{\circ}C$과 원적외선 $60^{\circ}C$에서 596.60~648.31 mg/100 g으로 높은 수준의 함량을 나타내었다. 소비자가 고춧가루를 선택하는데 중요한 요소로 작용하는 ASTA value는 126.68~156.77로 건조방법 및 조건에 따른 유의적 차이를 나타내지 않았다. 따라서 고추의 건조방법 및 조건을 낮은 온도 조건에서의 열풍, 원적외선 건조방법으로 결정한다면 고춧가루의 vitamin C의 손실을 최소화하고 PE House 건조에 비해 신속하며 오염을 예방하는 고품질의 고춧가루 제품을 생산할 수 있을 것으로 생각된다.

Keywords

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