Journal of the East Asian Society of Dietary Life (동아시아식생활학회지)

The East Asian Society of Dietary Life (동아시아식생활학회)
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Physicochemical Properties of Dried Burdock (Arctium lappa L.) Powder in the Peeling Process

박피 유무에 따른 우엉 분말의 이화학적 특성

  • Hwang, Dong-Ju (Dept. of Agrofood Resources, National Institute of Agricultural Science, Rural Development Administration) ;
  • Kim, Jin-Sook (Dept. of Agrofood Resources, National Institute of Agricultural Science, Rural Development Administration)
  • 황동주 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 김진숙 (농촌진흥청 국립농업과학원 농식품자원부)
  • Received : 2015.09.14
  • Accepted : 2015.10.20
  • Published : 2015.10.30
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Abstract

This study evaluated the qualitative properties of burdock (Arctium lappa L) peels as food material. Proximate composition, sweetness, pH, total acidity, mineral, fatty acid, free sugar, and organic acid contents of preprocessed burdock were measured. Crude ash, protein, fat, and total dietary fiber contents of non-peeled treated lotus roots were higher than those of peeled treated lotus roots (p<0.05). $^{\circ}Bx$, pH, and total acidity were not different in the peeling process. Redness and yellowness of lotus roots were reduced by the peeling process, whereas lightness increased (p<0.05). The mineral contents of Ca, K, Fe, and P were higher in non-peeled lotus roots, whereas non-peeled treated lotus root showed higher K contents (p<0.05). Maltose content was not significantly different, whereas fructose, sucrose and maltose contents were significantly different. Total organic acid contents were higher in non-peeled lotus roots (p<0.01). However total free amino acid contents were higher in peeled lotus roots (p<0.01).

우엉을 식재료로 이용함에 있어서 당연시 수반되었던 박피 과정으로 인한 급격한 갈변현상과 조직의 연화, 미생물의 오염 등으로 양질의 우엉을 얻는데 어려움이 있었다. 본 연구에서는 좋은 품질의 우엉을 좀 더 쉽고, 간편하게 식품소재로 활용하기 위해 박피 여부에 따른 이화학적 특성을 분석하였다. 수분 함량은 박피에 의한 차이가 없었고, 회분, 조단백질, 조지방 및 총식이섬유의 함량은 박피하지 않은 우엉이 박피한 우엉에 비해 높았다. 고형분($^{\circ}Bx$), pH, 그리고 총 산도는 박피 유무에 영향을 받지 않았고, 색도에 있어 L값은 박피한 우엉이 박피하지 않은 우엉에 비해 더 높아 명도가 밝은 반면에 a값과 b값은 낮았다(p<0.05). 무기질 함량의 경우, 박피하지 않은 우엉의 K, Ca, Fe, P 함량은 박피한 우엉보다 높았지만(p<0.05), Mg과 Na 함량은 박피한 우엉이 더 높았다(p<0.05). 총 지방산의 경우 우엉의 박피에 의한 함량 차이는 없었다. Palmitic acid 함량은 박피하지 않은 우엉이 박피한 우엉보다 높았다(p<0.05). 하지만 oleic acid는 이와는 다른 양상이었다(p<0.05). 총 유리당 함량은 박피 유무에 따라 그 값이 달랐는데(p<0.05), 박피하지 않은 우엉의 fructose, glucose 함량이 박피한 우엉보다 높았고, sucrose 함량은 박피한 우엉이 높았으며, maltose 함량은 박피에 의한 차이가 없었다. D-Malic acid와 acetic acid를 제외한 oxalic, citric, succinic acid의 유기산은 박피하지 않은 우엉이 더 높았고, 유리 아미노산은 박피한 우엉이 필수, 비필수아미노산 모두 높게 나타났다. 향후 본 연구결과에 이어 박피 여부에 따른 기능성 및 생리활성, 조리적성, 관능평가 등과 같은 식품소재로 사용하기 위한 연구가 지속되어야 할 것이다.

Keywords

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