Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Preparation and Characterization of Physicochemical and Sensory Properties of Hwajeon Added with Wild Grape Extract

머루즙 첨가가 화전의 이화학적.관능적 특성에 미치는 영향

  • Lee, Byung-Yong (Department of Food and Nutrition, Kangwon National University) ;
  • Kim, Nam-Ho (Department of Food and Nutrition, Kangwon National University) ;
  • Kim, Sol-I (Department of Food and Nutrition, Kangwon National University) ;
  • Kim, Seul-Gi (Department of Food and Nutrition, Kangwon National University) ;
  • Kim, Jin-Sun (Department of Food and Nutrition, Kangwon National University) ;
  • Surh, Jeong-Hee (Department of Food and Nutrition, Kangwon National University)
  • 이병용 (강원대학교 식품영양학과) ;
  • 김남호 (강원대학교 식품영양학과) ;
  • 김솔이 (강원대학교 식품영양학과) ;
  • 김슬기 (강원대학교 식품영양학과) ;
  • 김진선 (강원대학교 식품영양학과) ;
  • 서정희 (강원대학교 식품영양학과)
  • Received : 2011.06.29
  • Accepted : 2011.08.14
  • Published : 2011.10.31
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Abstract

Wild grape extract (WGE) was added into hwajeon at different concentrations (0, 5, 15, 30, 50% of water). The resulting hwajeon were analyzed for their physicochemical and sensory properties. With increasing concentrations of WGE, the pH of dough and hwajeon decreased, and their degrees brix and color intensity increased, presumably due to the presence of tartaric acid, sugar, and anthocyanin in the WGE. The WGE-enriched hwajeon showed higher hardness, gumminess, and chewiness than control hwajeon, which might have been because the sugar and tartaric acid in the WGE partially inhibited starch gelatinization during heat processing. Nevertheless, all the sensory properties and preference were higher in WGE-enriched hwajeon than controls, which could be partially attributed to the fact of that the WGE-enriched hwajeon retained relatively higher moisture. It is suggested that WGE-enriched hwajeon with high preference could be prepared without loss of hwajeon quality.

강원도 삼척의 특산물인 머루의 활용도를 높이고 아울러 지역을 대표하는 향토음식을 개발하기 위한 일환으로, 본 연구에서는 머루즙을 첨가한 화전의 개발이 가능한지를 검토하였다. 먼저, 머루 화전 개발에 있어 화전에 첨가될 주요 부재료인 머루즙의 화학적 특성 및 안전성을 평가하였다. 이후, 머루즙을 농도(머루즙무첨가 화전의 수분함량을 기준으로 0, 5, 15, 30, 50%)를 달리하여 첨가하여 화전을 제조한 후, 화전의 이화학적 및 관능적 특성을 무첨가 화전과 비교함으로써, 머루의 기능성이 화전의 물성에 부정적 영향 없이 부가될 수 있는지를 평가하였다. 본 연구의 결과는 크게 다음과 같이 요약할 수 있다. 화전 제조에 사용된 삼척산 머루즙은 Ca:P의 비율이 1.6:1이고, K 함량은 Na 함량에 비해 80배 이상 높아, 영양학적으로 우수한 무기질 조성을 나타내었다. 또한, 4종 중금속 Pb, Hg, Cd, Sn에 대해 식품공전의 규격을 충족시킴으로써 중금속에 대해 높은 안전성을 나타내었다. 특히, 삼척산 머루즙 1 g은 quercetin 193.4 ${\mu}g$에 상응하는 환원력을 보유한 것으로 나타났으며, 이는 머루 열매의 대표적 항산화물질이며 기능성 색소인 안토시아닌(anthocyanin)의 높은 항산화력에서 기인한 것으로 해석되었다. 머루즙 첨가화전은 첨가농도가 높을수록 안토시아닌의 함량 증가로 화전의 명도는 낮아지고 적색도는 높아지는 결과를 나타내었다. 화전의 pH는 유기산(주석산)의 영향으로 머루즙 첨가농도에 비례하여 감소하였으며, 당도는 첨가농도에 따른 비례적 증가가 뚜렷하게 관찰되었다. 머루즙에 내재하는 당과 단백질의 영향으로 화전의 수분보유량은 머루즙 첨가군에서 유의적으로 증가하였으며, 화전을 지지는 과정 중 일어나는 수분과 유지의 교환 반응으로 조지방의 함량은 수분보유량과 반비례의 양상을 나타내었다. 머루즙 첨가는 화전의 기계적 물성치인 경도, 점착성, 저작성을 증가시켰으며 이는, 머루즙 첨가로 화전에 부가된 유기산과 당이 화전 제조 시 전분의 호화와 팽윤을 방해하였기 때문으로 해석되었다. 그러나, 머루즙 첨가로 부가된 당은 화전 내부에 더 많은 수분을 보유하게 함으로써, 머루즙 첨가 화전은 촉촉한 정도, 부드러운 정도, 쫄깃한 정도 및 종합적 기호도 등 관능적 특성 전반에 걸쳐 무첨가군에 비해 유의적으로 더 높은 기호도를 나타내었다. 특히, 머루즙 30%, 50% 첨가군이 가장 높은 기호도를 나타냄으로써, 머루즙 첨가로 화전의 관능적 특성 개선 및 기능성이 부가될 수 있음을 시사하였다.

Keywords

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