@article{Aponte de Otaola_Díaz-Piferrer_Graham_1983, title={Seasonal Variations and Anatomical Distribution of Alginic Acid in Sargassum Spp. Found Along the Coasts of Puerto Rico}, volume={67}, url={https://revistas.upr.edu/index.php/jaupr/article/view/7741}, DOI={10.46429/jaupr.v67i4.7741}, abstractNote={Four species of <em>Sargassum</em> were analyzed for their content of alginic acid at the different seasons of the year. <em>S. polyceratlum</em> and <em>S. vulgare</em>, two sessile species, had maximum amounts of alginic acid at the vegetative stage and peak reproductive phase in May. Minimum amounts were detected in the postreproductive phase. The whole plants had an average of 20.3% and 17.9% alginic acid for <em>S. polyceratium</em> and <em>S. vulgare</em>, respectively. In both species, the stipes had more alginic acid than the fronds. Whole plants of the pelagic species yielded an average of 18.8% and 19.9% alginic acid, for <em>S. fluitans</em> and <em>S. natans</em>, respectively. Stipes of <em>S. fluitans</em> had more alginic acid than the fronds, whereas in <em>S. natans</em>, the situation was reversed.}, number={4}, journal={The Journal of Agriculture of the University of Puerto Rico}, author={Aponte de Otaola, Nilda E. and Díaz-Piferrer, Manuel and Graham, Horace D.}, year={1983}, month={Oct.}, pages={464–475} }