Extraction and characterization of Cystoseira compressa-derived alginate, collected from reef coral region of Red sea,Egypt | ||
| Mansoura Journal of Biology | ||
| Volume 47, Issue 2, June 2020, Pages 65-69 PDF (1.19 M) | ||
| Document Type: Research Article | ||
| DOI: 10.21608/mjb.2020.462399 | ||
| Authors | ||
| Mervat M. Ragaa* 1; Maha M. El-Shamy1; Ahmad F. A. Shalaby2; Mervat H. Husseina1 | ||
| 1Botany Department, Faculty of Science, Mansoura University, Egypt | ||
| 2Chemistry Department, Faculty of Science, Mansoura University, Egypt | ||
| Abstract | ||
| Alginate was extracted as sodium alginate from the brown algae Cystoseira compressa which collected from reef coral of tidal region along Red sea coast of Egypt. Fourier transformed infrared (FTIR) spectroscopy revealed the presence of O-H, COO-, C=O chemical functions groups indicating the presence of mannuronic and uronic acids. Thermogravimetric-differential thermal analysis (TGA) and differential thermal analysis (DSC) exhibited the thermostability of alginate. DSC analysis revealed its semi crystalline nature characterized by endothermic behavior with onset temperature 651.0° C. Rheological study revealed that viscosity of alginate solutions (0.125, 0.250 and 0.500 mg/ml) as a function of shear rate reached maximum values of 8.03, 12.1, 22.1 cP viscosity respectively at shear rate of 40 S-1. | ||
| Keywords | ||
| Cystoseira compressa; DSC; FTIR; Rheology; Sodium alginate; TGA | ||
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