Assessment of some agarophytes from the coastal areas of Iloilo, Philippines. II. Seasonal variations in the agar quality of Gracilaria changii, Gracilaria manilaensis and Gracilariopsis bailinae (Gracilariales, Rhodophyta)
MetadataShow full item record
Cited times in Scopus
Three species of agarophytes (Gracilaria changii, G. manilaensis and Gracilariopsis bailinae) collected along the mud flats of Iloilo were investigated to determine the monthly variation in agar yield (%), gel strength (g cm-2), gelling and melting temperatures (°C) and sulfate content (µg mg-1). Results show that Gracilariopsis bailinae collected at Zarraga gave a higher gel strength (784 g cm-2) than that collected at Estancia (637 g cm-2), however, the latter gave a higher agar yield (22%). A year-round source of agar was demonstrated in G. bailinae in both places while Gracilaria changii (January to June) and G. manilaensis (April to June) were seasonal. Higher agar yield and gel strength were measured from G. changii than in G. manilaensis. Gracilariopsis bailinae showed agar qualities superior to those of the two other species, hence it is a good species to harvest and develop for mariculture and consequently for agar manufacture.
Suggested CitationPondevida, H. B., & Hurtado-Ponce, A. Q. (1996). Assessment of some agarophytes from the coastal areas of Iloilo, Philippines. II. Seasonal variations in the agar quality of Gracilaria changii, Gracilaria manilaensis and Gracilariopsis bailinae (Gracilariales, Rhodophyta).
- AQD 
Showing items related by title, author, creator and subject.
Hurtado-Ponce, Anicia Q. (Network of Aquaculture Centres in Asia-Pacific, 1996)Research in seaweed from 1988–1994 focused on the agar producing Gracilaria. Studies in the following areas were also conducted: inventory of the seaweed resources; production ecology; farming systems; and agar characterisation. ...
Monthly variation of agar quality of some gracilarioids from the Philippines (Rhodophyta, Gracilariaceae) Luhan, Maria Rovilla J.; Ferrer, Maria Salvacion R.; Tanaka, Jiro; Aruga, Yusho (San Carlos Publications, University of San Carlos, 2004)Species of the economically important gracilarioid seaweeds from the Philippines were studied to determine the monthly variation in agar quality. Yield, gel strength, melting and gelling temperatures, and sulfate contents ...
de Castro, Teresa R. (San Carlos Publications, University of San Carlos, 1993)Agar from three species of Gracilaria, G. changii G. coronopifolia, and Gracilariopsis heteroclada, collected form Panay and Guimaras islands was evaluated. Each species was pretreated with NaOH solution before extraction. ...