Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
권호 표지

A Comparative Study on Physical Properties and Gel formation abilities of Hot- water Extractable Material, Water-Soluble Alginate and Alkali-soluble Alginate Extracted from Laminaria japonica in East Sea, Korea

한국산 다시마로부터 추출된 열수추출물, 수용성알긴산 및 알칼리가용성 알긴산의 물리적 성상과 겔 형성능

  • CHO Soon-Yeong (East Coastal Marine Bioresources Research Center, Kangnung National University) ;
  • KANG Hyun-Joo (East Coastal Marine Bioresources Research Center, Kangnung National University) ;
  • JOO Dong-Sik (East Coastal Marine Bioresources Research Center, Kangnung National University) ;
  • LEE Jung-Suck (East Coastal Marine Bioresources Research Center, Kangnung National University) ;
  • KIM Sang Moo (Faculty of Marine Bioscience & Technology, Kangnung National University)
  • 조순영 (강릉대학교 동해안해양생물자원연구센터) ;
  • 강현주 (강릉대학교 동해안해양생물자원연구센터) ;
  • 주동식 (강릉대학교 동해안해양생물자원연구센터) ;
  • 이정석 (강릉대학교 동해안해양생물자원연구센터) ;
  • 김상무 (강릉대학교 해양생명공학부)
  • Published : 1999.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

Tee yields, physical properties and gel formation abilities or hot-water extractable material (HWEM) and water-soluble alginate (WSA) extracted from Laminaria japonica were estimated and compared with those of the alginate (ASA) extracted with alkali solution in the routine procedure. The contents of HWEM, WSA and ASA in Laminaria japonica were 8.3, 2.5 and $19.1\%$, respectively. The HWEM and WSA had no gel formation ability, whereas the ASA had a good gol formation ability. The HWEM and WSA were almost not viscous even in $1.5\%$ of the sample solution, whereas the ASA was very highly viscous in above $0.5\%$ of sample solution. The melting points of $1\%$ solution of HWEM, WSA and ASA sample were 31, 24 and $14^{\circ}C$, respectively. The solubility at melting point of each samples varied from 2.3 to 2.6 g/100 g water, and a few differences were observed.

동해산 다시마 중의 알긴산의 고부가가치적 산업화 이용의 기초자료를 얻고자, 열수추출물 (HWEM),수용성 알긴산(WSA) 및 알칼리가용성 알긴산 (ASA)을 추출해 내어 그 각각의 수율, 겔화능, 겉보기점도, 용해성 (가용한계), 녹는점 등을 비교하여 보았다. 동해산 다시마 중 HWEM, WSA 및 ASA의 함량은 각각 8.3, 2.5 및 $19.1\%$이었다. 이 중 HWEM과 WSA는 전혀 겔화능이 없었고, 반면에 ASA는 $1.5\%$이상 농도에서 강한 점성과 함께 $Ca^{++}$이온에 의한 강한 겔화능도 지녔다. HWEM, WSA 및 ASA의 녹는점은 각각 $31.0^{\circ}C$, $24.0^{\circ}C$ 및 $14.3^{\circ}C$이었고, 그 각각의 녹는 온도에서의 가용한계는 2.55, 2.59 및 $2.31\%$이었다. 가용한계농도에는 큰 차이가 없으나, 녹는점면에서는 ASA가 가장 낮아 바람직하였다.

Keywords