Volume 43, No. 02, Month MAY, Year 2019, Pages 66 - 75

Correlation between growth, phenolic content and antioxidant activity in the edible seaweed, caulerpa lentillifera in open pond culture system

Bongkot Wichachucherd, Suchada Pannak, Chuenmanee Saengthong, Intira Koodkaew, Eknarin Rodcharoen

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In Thailand, Caulerpa lentillifera J. Agardh is cultured as a commercial endeavor due to its high rate of growth and its nutrient and antioxidant contents. Of particular interest is the correlation between growth rate in pond culture and the resulting chemical products, such as total phenolic, and antioxidant activity. Samples were randomly collected from ponds once a month from April to June 2017. Morphological features, including dry weight, moisture content and numbers of fronds and branches were measured. Ethanol extraction was used to determine the total phenolic content and antioxidant activity. The results showed that dry weight was highest in April, hence marked the peak of the growth period, and was correlated to the number of fronds and branches. The percentage yield of extracts (16-17%) was not different among months, while phenol content and antioxidant activity showed slight differences among months. The highest phenol content was found in June (73±2.08 mg gallic acid equivalentg-1 DW), while highest antioxidant activity was found in May (29.51±0.78%). The chemical content varied depending on physical environmental factors other than growth. These findings help us to understand the optimal conditions for growth and harvest of seaweed for chemical production and its potential for a variety of applications.


Antioxidant, Caulerpa lentillifera, Growth, Macroalgae, Phenolic content


Published by : Faculty of Fisheries, Kasetsart University
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