Rheological Behavior and Antioxidant Activity of Carrageenan Extracted from Green Seaweed (Eucheuma cottonii) Using Alkaline Solution at Low Temperature

Setyopratomo, Puguh and Sapei, Lanny (2022) Rheological Behavior and Antioxidant Activity of Carrageenan Extracted from Green Seaweed (Eucheuma cottonii) Using Alkaline Solution at Low Temperature. In: INTERNATIONAL CONFERENCE ON INFORMATICS, TECHNOLOGY, AND ENGINEERING 2021 (InCITE 2021): Leveraging Smart Engineering, 25 - 26 August 2021, Surabaya, Indonesia (Virtual/Online).

PDF Puguh Setyopratomo_Rheological Behavior and Antioxidant - InCITE 2021.pdf Download (3MB)

Abstract

Seaweed is one of the important biological resources found in coastal and marine regions. One of the main products derived from seaweed is carrageenan. In this work, the carrageenan was extracted from the seaweed using alkaline solution. Two types of bases were used as the extracting solution, namely NaOH and KOH solutions. The extraction results showed that the use of KOH solution resulted in a higher carrageenan yield than that extracted using NaOH solution. It was also found that the carrageenan yield was increasing with the increase of the basic solution volume to mass of the seaweed ratio. The highest carrageenan yield of about 33.4% was obtained using KOH solution at solvent volume to seaweed mass ratio of 45 ml/g. The rheological measurement showed that the rheological behavior fitted best to the Power Law model. Meanwhile, the carrageenan extracted using NaOH solution demonstrated higher antioxidant activity. The highest percentage of DPPH radical scavenging activity of the carrageenan extract was 60.7%, while the IC50 values were in the ranges of 0.2 – 30 ppm indicating a potent antioxidant activity.

Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	antioxidant, carrageenan, DPPH, rheology, seaweed
Subjects:	T Technology > TP Chemical technology
Divisions:	Faculty of Engineering > Department of Chemical Engineering
Depositing User:	Ester Sri W. 196039
Date Deposited:	10 May 2022 07:12
Last Modified:	30 May 2022 09:14
URI:	http://repository.ubaya.ac.id/id/eprint/41824

Actions (login required)

View Item