Agar yield and quality of Gracilaria chilensis (Gigartinales, Rhodophyta) in tank culture using fish effluents

Martinez, L. A.; Buschmann, A.H.

doi:10.1007/978-94-009-1659-3_48

Cited by 2 publications

References 11 publications

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Spatial and temporal variation of Hypnea musciformis carrageenan (Rhodophyta - Gigartinales) from natural beds in Rio de Janeiro State, Brazil

2007

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Hypnea musciformis (Wulfen in Jacqu.) J. V. Lamour. is a native source of kappa-carrageenan, a commercially important galactan, exploited for decades on the northeastern Brazilian coast. Further studies to obtain information about the effects of abiotic factors on the carrageenan yield and quality of specimens from the southeastern Brazilian coast (Rio de Janeiro State) are needed. In this study, the carrageenan yield and quality of H. musciformis was analyzed over a period of 1 year in populations from Rio de Janeiro state. One epiphytic population was collected at a site situated at the entrance of the Sepetiba Bay (Praia Vermelha), another in the middle of the bay (Praia Grande) and a third (Praia Rasa) in a place exposed to the open sea. An epilithic population was also collected at Praia Rasa. In the sampling period, different changes were observed in the carrageenan yield and quality (viscosity and sulphate content) of the H. musciformis (August 1994 to June 1995 at the different sites and habitats (epilithic and epiphytic). Kappa carrageenan was the only one of its type detected. Only one population showed a correlation between viscosity and degree of sulphate content. Our analyses suggest that abiotic factors, such as water movement, desiccation stress, low salinity and extreme temperatures, were the main abiotic factors that influenced the changes in carrageenan of the populations studied. Thus, for a rational use of natural beds of H. musciformis, it is desirable to estimate the changes in carrageenan and algal biomass in the place to be exploited.

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Spatial and temporal variation of Hypnea musciformis carrageenan (Rhodophyta - Gigartinales) from natural beds in Rio de Janeiro State, Brazil

2007

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Fenologia, aspectos ecofisiológicos e seleção de linhagens em cultivos no mar de Gracilaria birdiae (Rhodophyta, Gracilariales) no Estado do Rio Grande do Norte, Brasil

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Agar yield and quality of Gracilaria chilensis (Gigartinales, Rhodophyta) in tank culture using fish effluents

Cited by 2 publications

References 11 publications

Spatial and temporal variation of Hypnea musciformis carrageenan (Rhodophyta - Gigartinales) from natural beds in Rio de Janeiro State, Brazil

Spatial and temporal variation of Hypnea musciformis carrageenan (Rhodophyta - Gigartinales) from natural beds in Rio de Janeiro State, Brazil

Fenologia, aspectos ecofisiológicos e seleção de linhagens em cultivos no mar de Gracilaria birdiae (Rhodophyta, Gracilariales) no Estado do Rio Grande do Norte, Brasil

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