Carrageenan and biochemical composition of three species of Halymenia (Halymenia durvillaea Bory de Saint-Vincent, Halymenia maculata J. Agardh and Halymenia dilatata Zanardini) in Initao, Misamis Oriental, Mindanao, Philippines

摘要

Laboratory experiments were conducted to determine the biochemical composition and carrageenan content of three species of Halymenia (Halymenia durvillaea, Halymenia maculata and Halymenia dilatata) that occurred along the coast of Iligan Bay. Powdered samples of Halymenia were analyzed for carrageenan content using extraction method while analysis of crude protein was done using Kjeldahl method, total fat by hydrolysis and solvent extraction method, ash content by gravimetric method, moisture content by air oven method, and total carbohydrate content by computational method. Result showed significant variation in the levels of carrageenan and biochemical composition among species. Halymenia durvillaea ranked highest in carrageenan yield, protein, fat, carbohydrate, ash and moisture content. This species can be a potential source for carrageenan production.