지충이의 이화학적 특성

A Study on the Physicochemical Properties of the Sargassum thunbergii

  • 최선영 (경상대학교 식품영양학과.농업생명과학연구원) ;
  • 김순영 (경상대학교 식품영양학과.농업생명과학연구원) ;
  • 허종문 (경북대학교 응용생물화학부) ;
  • 신정혜 (남해전문대학 호텔조리제빵과) ;
  • 최한길 (원광대학교 생명과학부) ;
  • 성낙주 (경상대학교 식품영양학과.농업생명과학연구원)
  • Choi Sun-Young (Dept. of Food Science and Nutrition, Institute of Agriculture and Life Sciences, Gyeongsang National University) ;
  • Kim Soon-Young (Dept. of Food Science and Nutrition, Institute of Agriculture and Life Sciences, Gyeongsang National University) ;
  • Hur Jong-Moon (Division of Applied Biology and Chemistry, Kyungpook National University) ;
  • Shin Jung-Hye (Dept. of Hotel Culinary Arts & Bakery, Namhae College) ;
  • Choi Han-Gil (Dept. of Biological Science, Wonkwang University) ;
  • Sung Nak-Ju (Dept. of Food Science and Nutrition, Institute of Agriculture and Life Sciences, Gyeongsang National University)
  • 발행 : 2006.03.01

초록

본 연구는 남해안에 서식하고 있는 해조류인 지충이에 대하여 기능성 식품으로서의 활용가치를 알아보고자 이화학적 성분을 분석하고 지충이 용매 추출물의 항산화능을 비교하고자 POV와 TBARS를 측정하였다. 지충이의 조단백질과 조지방의 함량은 각각 $15.7{\pm}0.8%$$0.9{\pm}0.4%$였다. 9종의 무기질 중 Ca이 $2,288.0{\pm}2.2mg/100g$으로 높게 검출되었고, 아미노산은 glutamic acid가 $1,071.3{\pm}1.8mg/100g$으로 가장 함량이 높았으며, 다음으로 aspartic acid ($645{\pm}1.4mg/100g$) > phenylalanine($470.1{\pm}1.4mg/100g$)의 순이었다. 유리당의 함량은 galactose가 $40.2{\pm}0.5mg/100g$으로 가장 높았고 $FeCl_2$$CuSO_4$에 대한 항산화 활성은 추출물의 농도가 높아짐에 따라 항산화능이 증가하는 경향이었고 특히 chloroform 추출물에서 항산화 활성이 우수하였다.

This study was designed to investigate the physicochemical properties of the Sargassum thunbergii, by measuring general composition, minerals, amino acid, free sugar, peroxide value(POV) and thiobarbituric acid reactive substances(TBARS). The contents of crude protein and crude lipid in Sargassum thunbergii were $15.7{\pm}0.8%\;and\;0.9{\pm}0.4%$, respectively. Total content of amino acids was 5,635.5 mg/100 g. The glutamic aid($1,071.3{\pm}1.8mg/100g$) content was the highest, followed by aspartic acid($645.9{\pm}1.4mg/100g$) and phenylalaine ($470.1{\pm}1.4mg/100g$). Galactose and mannose of all free sugar showed the highest values $40.2{\pm}0.5mg/100g\;and\;22.3{\pm}0.4mg/100g$. All solvent extracts of Sargassum thunbergii showed lower POV than ascorbic acid, and chloroform extracts showed the strongest antioxidant activity(4.0 meq/kg) at 12 hours storage. TBARS of chloroform extract were 2.8 mg MDA/L in $FeCl_2$ and 0.9 mg MDA/L in $CuSO_4$ oxygen species.

키워드

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