Seaweed is one of the primary producers in marine ecosystems including phytoplankton, seagrass and mangroves. Seaweed has economic value as a producer of hydrocolloids, one of which is carrageenan. Carrageenan consists of two fractions based on their sulfate content, namely kappa carrageenan which contains less than 28% sulfate and carrageenan iota containing more than 30% sulfate. The us…