Comparative Study of Drying Methods on Seaweeds (Kappaphycus sp. and Padina sp.) Based on Their Phytochemical and Polysaccharaide Content Located in Sabah

Nazirah Mingu and Khairee M. Saad and Hasmadi Mamat and Shafiquzzaman Siddiquee and Mohd Hafiz Abd Majid and Mohd Sani Sarjadi (2024) Comparative Study of Drying Methods on Seaweeds (Kappaphycus sp. and Padina sp.) Based on Their Phytochemical and Polysaccharaide Content Located in Sabah. Borneo Journal of Resource Science and Technology, 14. pp. 112-122. ISSN 2229-9769

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Abstract

Seaweed, one of the marine resources is known for their precious active compound. The dehydration process is required before the ultilization of the seaweed. It helps to increase the shelf life and play a major role in the extraction of specific chemical components. This study was conducted to evaluate the effects of different drying treatments of two different seaweeds on its phytochemical contents and carrageenan properties. Seaweed used include edible seaweed which are Kappaphycus sp., and locally abundant seaweed Padina sp. Four (4) different drying methods used; namely sun-drying for five (5) days, air-drying for 14 days, freeze-drying for five (5) days, and oven drying with three different temperatures at 60 °C, 80 °C and 100 °C for six (6) h, respectively. The moisture content was measured, and air-dried seaweeds contain highest moisture content (19.32% - 16.21%). Methanol, MeOH was used as extraction solvent in the determination of phytochemicals content for total phenolic content (TPC) and total flavonoid content (TFC). Sodium hydroxide, was used to extract carrageenan from Kappaphycus sp., which was evaluated on their percentage yield. Oven dried at 100 °C extracts possessed lowest retention of phytochemicals content and carrageenan yield among all drying methods. This finding suggests that various drying methods applied significantly influenced the composition of seaweeds. Identifying the most effective post-harvest drying procedure for seaweed would be commercially advantageous.

Item Type:	Article
Keyword:	Carrageenan, Drying, Kappaphycus sp., Padina sp., Phytochemical
Subjects:	Q Science > QH Natural history > QH301-705.5 Biology (General) S Agriculture > SH Aquaculture. Fisheries. Angling > SH1-691 Aquaculture. Fisheries. Angling > SH201-399 Fisheries > SH388.7-391.5 Algae culture
Department:	FACULTY > Faculty of Science and Natural Resources
Depositing User:	SITI AZIZAH BINTI IDRIS -
Date Deposited:	21 Aug 2024 16:35
Last Modified:	21 Aug 2024 16:35
URI:	https://eprints.ums.edu.my/id/eprint/40748

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