La rhodophycée Gracilaria verrucosa (Hudson) Papenfuss, du lac de Bizerte (Tunisie): variations mensuelles de la biomasse, du rendement et de la qualité de l'agar

Authors

  • Rafik BEN SAID Université de Carthage. Institut National des Sciences et Technologie de la Mer- INSTM
  • Jamel KSOURI Université de Carthage. Institut National des Sciences et Technologie de la Mer- INSTM

Keywords:

Agar, Yield, Quality, Seaweed products, Biomass, Gracilaria verrucosa, Brackish, Tunisia, Bizerte Lagoon

Abstract

During the year of 1999, the red seaweed Gracilaria verrucosa (Hudson) Papenfuss (Rhodophyta, Gracilariales, Gracilariaceae), has been followed monthly in Bizerte lake (in the north of Tunisia). The parameters studied are: biomass, agar-yield, gel strength, gelling and melting temperatures. The results showed that the highest average of wet biomass is recorded in June (2500 g/m super(2)) and the lowest is obtained in October (130 g/m super(2)). The highest agar-yield is obtained in April (37,92 %) ; while the lowest is recorded in September (10,67 %). High and low gel strengths are obtained in May (410g /cm super(2)) and in December (125 g :cm super(2)), respectively. Gelling temperature varies between 31 degree C and 44~ 'C, while melting temperature varies between 79 degree C and 100 degree C

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Published

1999-10-04

How to Cite

1.
BEN SAID R, KSOURI J. La rhodophycée Gracilaria verrucosa (Hudson) Papenfuss, du lac de Bizerte (Tunisie): variations mensuelles de la biomasse, du rendement et de la qualité de l’agar. Bull. Inst. Natl. Sci. Technol. Mer [Internet]. 1999Oct.4 [cited 2024May2];26:127-36. Available from: https://www.instm-bulletin.tn/index.php/bulletin/article/view/885

Issue

Vol. 26 (1999)

Section

Article

ARK

https://n2t.net/ark:/68747/INSTM.Bulletin.v26.885

License

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

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