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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Changes in Physicochemical Properties of Haetsun Vegetables by Blanching

Blanching에 의한 햇순나물의 이화학적 특성 변화

  • 김민하 (영남대학교 식품영양학과) ;
  • 장혜림 (영남대학교 식품영양학과) ;
  • 윤경영 (영남대학교 식품영양학과)
  • Received : 2012.01.25
  • Accepted : 2012.04.26
  • Published : 2012.05.31
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Abstract

This study was conducted to investigate the physicochemical properties of raw and blanched $Haetsun$ vegetables. The proximate composition, reducing sugar, free amino acid, organic acid, vitamin C and mineral composition were compared between raw and blanched $Haetsun$ vegetables. After blanching treatment, the moisture content of $Haetsun$ vegetables was increased, but the crude ash, crude fat, crude fiber, and crude protein content decreased in all samples. $C.$ $sinensis$ contained the highest level of reducing sugar with 1,518.16 mg% among all samples, and the content of the reducing sugar was decreased after blanching in all samples. Raw and blanched $Haetsun$ vegetables contained all essential amino acids except tryptophan. The vitamin C content of blanched samples was reduced 29~88% compared with raw samples. All $Haetsun$ vegetables contained high levels of potassium and calcium regardless of blanching. From these results, even though this study confirmed that $Haetsun$ vegetables were rich in vitamin C and minerals, their high amount of nutrient was reduced by blanching. Therefore, blanching conditions which can keep food value of $Haetsun$ vegetables must be established, because most of the nutrient composition of $Haetsun$ vegetables decreases by blanching.

본 연구는 주로 blanching 후 섭취되고 있는 참죽, 오가피, 두릅, 엄나무 햇순의 이화학적 특성 변화를 조사하였다. 햇순나물의 수분함량은 blanching 후 증가되었으나 조회분, 조지방, 조섬유 및 조단백 함량은 blanching에 의해 감소되었다. 환원당 함량은 참죽이 1,518.16 mg%로 가장 높게 나타났으며, 모든 햇순나물에서 blanching에 의해 환원당이 감소되었다. 유리아미노산의 경우 햇순나물에서는 트립토판을 제외한 모든 필수아미노산을 함유하고 있었고, blanching 후 총 아미노산 함량이 모두 감소되었다. 유기산 함량의 경우 엄나무에서는 succinic acid가, 그 외 햇순나물에서는 tartaric acid가 높게 측정되었으며, blanching에 의해 그 함량이 모두 감소되었다. 햇순나물의 비타민 C 함량은 blanching에 의해 모두 감소되었으며 감소량은 29~88%로 영양성분 중 가장 높은 감소율을 나타내었다. 무기질 함량은 모든 햇순나물에서 칼륨과 칼슘이 높은 함량을 나타내었으며, blanching에 의한 감소율이 가장 낮았다. 이상의 결과에서 햇순나물은 비타민 C와 무기질 등의 함량이 높은 건강식품이나 blanching에 의해 대부분의 영양성분의 감소를 보여, 향후 본래의 영양성을 유지할 수 있는 blanching 조건 설정이 필요하다.

Keywords

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