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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Physicochemical Composition of Ramie Leaf According to Drying Methods

건조방법에 따른 모시잎의 이화학적 성분

  • Kim, Ah-Ra (Dept. of Food and Nutrition, Chosun University) ;
  • Lee, Hyun-Joo (Dept. of Nutrition and Culinary Science, Hankyong National University) ;
  • Jung, Hae-Ok (Dept. of Culinary Art, Chodang University) ;
  • Lee, Jae-Joon (Dept. of Food and Nutrition, Chosun University)
  • 김아라 (조선대학교 식품영양학과) ;
  • 이현주 (한경대학교 영양조리과학과) ;
  • 정해옥 (초당대학교 조리과학부) ;
  • 이재준 (조선대학교 식품영양학과)
  • Received : 2013.09.06
  • Accepted : 2013.10.23
  • Published : 2014.01.31
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Abstract

This study was investigated to compare the physicochemical properties between hot air dried ramie leaf (HR) and freeze dried ramie leaf (FR). There were no significant differences in moisture, crude protein, crude fat, crude ash, and carbohydrate content depending on the drying methods, but the dietary fiber content was significantly higher in FR than in HR. The major amino acids were aspartic acid, glutamic acid, and leucine, and the contents of total amino acids, total essential amino acids, and essential amino acid ratios were higher in FR compared with HR. Major fatty acids were linoleic acid, palmitic acid, arachidic acid, and linolenic acid. Hot air drying caused a decrease in unsaturated fatty acids and an increase in saturated acids; however, there was no significance difference between the two different drying methods. The contents of vitamin A, E, and C in FR were higher than those in HR, and there were significant differences in the contents of vitamin A and C depending on the drying methods. Regardless of the drying methods, both HR and FR were abundant in order of Ca, K, Mg, Mn, Fe, Na, and Zn. The contents of total minerals, total organic acids and total free sugars in HR were significantly higher than those in the FR.

본 연구는 모시잎 분말의 영양성분 및 기능성 성분의 손실을 최소화하여 건강기능성을 향상시킬 수 있고 경제적으로도 효율적인 건조방법을 구명하기 위해, 열풍건조 및 동결건조 모시잎의 건조방법에 따른 이화학적 성분을 비교 분석하였다. 건물량 기준으로 열풍건조 및 동결건조 모시잎의 일반성분 함량을 비교해 보면, 수분, 조단백질, 조지방, 조회분 및 탄수화물의 함량은 건조방법에 따른 유의적 차이를 보이지 않았으나 식이섬유소 함량은 열풍건조 모시잎에서 유의적으로 높게 나타났다. 모시잎의 주요 구성아미노산은 aspartic acid, glutamic acid, leucine이며, 총 구성아미노산 함량, 필수아미노산 함량 및 총 구성아미노산에 대한 필수아미노산의 비율 모두 동결건조 모시잎에서 높게 나타났다. 모시잎의 주요지방산은 linoleic acid, palmitic acid, arachidic acid, linolenic acid인 것으로 나타났고, 건조방법에 따른 유의차는 없었으나 열풍건조로 인하여 불포화지방산의 함량이 다소 감소됨으로써 상대적으로 포화지방산의 함량이 높게 나타났다. 비타민 A, E 및 C의 함량은 동결건조 모시잎에서 높게 나타났으며, 비타민 A 및 C의 함량은 건조방법에 따른 유의적인 차이를 보였다. 열풍건조 및 동결건조 모시잎 모두 Ca, K, Mg, Mn, Fe, Na, Zn 순으로 검출 되었고 총 무기질 함량은 열풍건조 모시잎에서 유의적으로 높게 나타났다. 열풍건조 및 동결건조 모시잎 모두 유기산은 oxalic acid, succinic acid 및 citric acid 순으로 검출되었고, 구성당은 glucose, fructose, galactose, rhamnose 순으로 검출되었으며, 총 유기산 및 총 구성당 함량 모두 열풍건조 시에 유의적으로 높게 나타났다.

Keywords

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