Carrageenan each plant weighs approximately 1 kg. The "E. cottonii" variety has been reclassified as "Kappaphycus cottonii" by Maxwell Doty (1988), thereby introducing the genus "Kappaphycus", on the basis of the phycocolloids produced (namely kappa carrageenan). After harvest, the seaweed is dried, baled, and sent to the carrageenan manufacturer. There the seaweed is ground, sifted to remove impurities such as sand, and washed thoroughly. After treatment with hot alkali solution (e.g., 5–8% potassium hydroxide), the cellulose is removed from the carrageenan by centrifugation and filtration. The resulting carrageenan solution is then concentrated by evaporation. It is dried and ground to specification.
Purple Death from Outer Space Purple Death from Outer Space Purple Death from Outer Space is a 1966 American feature length compilation of the first half of the 1940 serial "Flash Gordon Conquers the Universe". A second feature with footage from the final half of the serial was used to complete another 1966 feature film "Perils from the Planet Mongo". Both were made available directly as made-for-TV movies. When the Earth is attack by a mysterious substance causing death and leaving the victim purple, Dr Zarkov, Flash Gordon, and Dale Arden discover the deaths are caused by one of Ming's spaceships from the planet Mongo.