Gelidialian red algae, that contain rhizoidal filaments, except the family Gelidiellaceae were processed to
make bleached pulps, which can be used as raw materials for papermaking. Red algae consist of rhizoidal
filaments, cortical cells usually reddish in color, and medullary cells filled with mucilaginous carbohydrates.
Red algae pulp consists of mostly rhizoidal filaments. Red algae pulp of high brightness can be
produced by extracting mucilaginous carbohydrates after heating the algae in an aqueous medium and
subsequently treating the extracted with bleaching chemicals. In this study, we prepared paper samples
from bleached pulps obtained from two red algae species (Gelidium amansii and Gelidium corneum) and
compared their properties to those of bleached wood chemical pulps.