Abstract:
Kappaphycus alvarezii is tropical seaweed, the main carrageenan producer in the global trade. Study on the Spore
Discharge and Carrageenan Content of Seaweed Kappaphycus alvaerzii Illumintaed with Different Light Colours was
conducted in the Wet Laboratory, the Faculty of Marine Sciences and Fisheries, Hasanuddin University, Makassar,
Indoneisa, and in the Seawater Recirculating Installation operated by CV. Rezki Bahari, Makassar, respectively.
Carrageenan content of the algae was analyzed in the Water Quality Laboratory, Faculty of Marine Sciences Hasanuddin
University. The study on the spore release discharge was considered as a preliminary attempt to produce high quality of K.
alvarezii seeds in the coming years, while study on the carrageen content objected to produce K. Alvarezii with high
carrageenan content through Indoor culture system. All light colours tried (white, red, yellow, green, and blue) resulted the
spore discharge on the fifth day of the exeperiment. However, there was none plantlet produced with the green light.
Carrageenan content tend to high with white light (68.71%) as well as green light (61.47%), followed by yellow light
(54.09%). The lowest were with blue and red lights. Different on carrageenan content at different light colours due to the
different on energy content of each light exposed as well as different in composition of photosynthetic pigments of
Kappaphycus alvarezii (Eucheuma cottoni) in response to different energi of differs incoming light colours.
