Isolation of Carrageenan from Eucheuma cottonii by Variying Alkaline Solutions

  • Nelson Gaspersz Department of Chemistry, Faculty of Sciences and Technology, Pattimura University, Poka, Ambon, 97134, Indonesia
  • Matheis F. J. D. P. Tanasale Department of Chemistry, Faculty of Sciences and Technology, Pattimura University, Poka, Ambon, 97134, Indonesia
  • Dominggus Malle Department of Animal Husbandry, Faculty of Agriculture, Pattimura University, Poka, Ambon, 97134, Indonesia
  • Zulvia Astrianti Kafara Department of Chemistry, Faculty of Sciences and Technology, Pattimura University, Poka, Ambon, 97134, Indonesia
DOI: https://doi.org/10.30598/ijcr.2025.12-gas
Keywords: Alkaline solutions, Carrageenan, Gel strength, Eucheuma cottonii

Abstract

The carrageenan can be isolated by combining alkaline KOH, NaOH, and Ca(OH)2 solutions. Alkaline solutions of KOH: NaOH, KOH: Ca(OH)2, and NaOH: Ca(OH)2 were combined to extract carrageenan. The amount of the solution was varied, the carrageenan groups were characterized using FTIR, and the carrageenan’s gel strength was tested. The extraction results obtained the highest yield in the combination of alkaline solutions Ca(OH)2 80%+KOH 20%, which is equal to 70.18% FTIR test results for carrageenan produced from the extraction of Eucheuma cottonii seaweed showed absorption showing the type of kappa (κ) carrageenan. The highest gel strength test results were obtained in an alkaline solution of Ca(OH)2 80%: NaOH 20%, which was 252.5 g bloom, and the lowest was made in a solution of Ca(OH)2 80%: KOH 20%, which was 21.0 g bloom.

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Published
2025-01-24
How to Cite
(1)
Gaspersz, N.; Tanasale, M. F. J. D. P.; Malle, D.; Kafara, Z. A. Isolation of Carrageenan from Eucheuma Cottonii by Variying Alkaline Solutions. Indo. J. Chem. Res. 2025, 12, 190-197.
Issue
Vol 12 No 3 (2025): Edition for January 2025
Section
Research articles

Copyright (c) 2025 Nelson Gaspersz, Matheis F. J. D. P. Tanasale, Dominggus Malle, Zulvia Astrianti Kafara

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