Growth and Carrageenan from Kappaphycus alvarezii (Doty) at Different Depths and Their Possible Application in Other Locations

Abstract

This study aimed to evaluate the growth and yield of carrageenan from Kappaphycus alvarezii (Doty) cultured at different depths of water. The study lasted for 49 days, using two strains (green and brown), three initial weights (50, 100, 150 g), and five levels of depth (1, 2½, 4, 5½, 7 m). The results showed significant differences between growth rate and yield of carrageenan on the three treatments (P<0.01). The highest growth rate of both morphology types of green and brown occur on the same weight and depth i.e., at initial weight 100 g and depth 2½ m, respectively at 5.68 and 6.05%/day. The yield of carrageenan is likely to increase in depth with the highest value at a depth of 7 m, respectively 17.12% at green type and 14.63% at brown type. The results showed that reducing growth may increase the yield of carrageenan by the increasing of water depth. Based on these results, this study can be applied to another location as long as the quality of water allows farming activities.

Carotenoid Pigments of Red, Green and Brown Macroalgae Species as Potential Active Pharmaceutical Ingredients

“…In health-promoting products industry such as food, pharmaceutical, cosmetic, and biomedicine, macroalgae has been used as a valuable source of bioactive compounds such as phycocolloids, tocopherol, vitamin C, carotenoid and flavonoid [5][6][7][8]. Other than the potential nutritional values found in macroalgae, there are many reasons for macroalgae to be highly valuable such as cheap and economical, easily cultivated and adaptation to the extreme condition as well as has the potential to be boosted to meet global demand [9][10][11].…”