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http://dx.doi.org/10.3746/jkfn.2004.33.4.747

Comparison of Alginic Acid Yields and Viscosity by Different Extraction Conditions from Various Seaweeds (Laminaria religiosa, Hizikia fusiforme, and Undaria pinnatifida)  

윤미옥 (목포대학교 생명공학부 식품생물공학전공)
이승철 (경남대학교 생명과학부 식품생물공학전공)
임종환 (목포대학교 생명공학부 식품생물공학전공)
김정목 (목포대학교 생명공학부 식품생물공학전공)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.33, no.4, 2004 , pp. 747-752 More about this Journal
Abstract
Alginates were extracted from the Laminaria religiosa, Undaria pinnatifida, and Hizikia fusiforme by using four different extraction methods and compared the yields of alginate. Acid-alkali soluble alginate (AASA) extraction method from Undaria pinnatifida resulted in the best yield of alginate among the seaweeds. The optimal condition for extracting alginate from Laminaria religiosa was 0.4 N H$_2$SO$_4$ and 3% NaCO$_3$ concentrations at the AASA extraction method. The alginate yields of hot water extractable material (HWEM) water soluble alginate (WSA), alkali soluble alginate (ASA) and AASA in Hizikia fusiforme were 18.6, 4.7, 22.5 and 26.5%, respectively. The alginates manufactured by the WSA extraction method showed more bright color than those of the ASA and AASA extraction methods. The alginate prepared by the ASA extraction method from Hizikia fusiforme showed the higher viscosity than that of the ASA extraction method. The molecular weight of the alginate from Hizikia fusiforme was 33.3 kDa to 121.6 kDa depending on the extraction method.
Keywords
alginate; seaweed; Laminaria religiosa; Hizikia fusiforme;
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Times Cited By KSCI : 4  (Citation Analysis)
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