Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Effects of Hot Water Treatment and Dialysis on Measuring the Average Molecular Weight of Alginates

열수처리와 투석이 alginates의 평균분자량의 측정에 미치는 영향

  • YOU Byeong Jin (Department of Food Science, Kangnung National University) ;
  • LIM Yeong Seon (East coastral Marine Bioresources Research Center (EMBRC), Kangnung National University) ;
  • RYU Hong Soo (Faculty of Food Science and Biotechnology, Pukyong National University)
  • 유병진 (강릉대학교 식품과학과) ;
  • 임영선 (강릉대학교 동해안해양생물자원연구센터) ;
  • 류홍수 (부경대학교 식품생명공학부)
  • Published : 2004.02.01
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Abstract

In preparing sodium alginates from sea tangle (Laminaria japonica) powder using the Mexican process, alkaline extraction, conversion to alginic acid and reversion to sodium alginates were used to increase purity. The effect of hot water treatment and dialysis on measuring the average molecular weight of sodium alginates were investigated. Intrinsic viscosity and average molecular weight of sodium alginates after dialysis were higher than those before dialysis. Average molecular weight of sodium alginates treated with hot water was higher than that without. Hot treatment has little effect on the ash content of sodium alginates. Ash content of sodium alginates before dialysis were $27-30\%$ those after dialysis were $10\%.$ After dialysis, Na content was highest $(89-91\%),$ K was $11-12\%,$ Ca was $1.9\%,$ and Mg was $0.05\%.$ Ash content of alginates had little effect on average molecular weight. SAV (slope of apparent viscosity) of alginates solution after dialysis showed higher values than before. SAV of the alginates with hot water treatment were higher than without treatment.

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References

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