• DOI:10.5657/FAS.2011.0198
• Corpus ID: 53313179

Distribution of Phlorotannins in the Brown Alga Ecklonia cava and Comparison of Pretreatments for Extraction

@article{Chowdhury2011DistributionOP,
  title={Distribution of Phlorotannins in the Brown Alga Ecklonia cava and Comparison of Pretreatments for Extraction},
  author={Muhammad Tanvir Hossain Chowdhury and Issa Bangoura and Ji‐Young Kang and Nam Gyu Park and Dong Hyun Ahn and Yong-Ki Hong},
  journal={Fisheries and Aquatic Sciences},
  year={2011},
  volume={14},
  pages={198-204}
}

• M. Chowdhury, Issa Bangoura, +3 authors Yong-Ki Hong
• Published 30 September 2011
• Biology
• Fisheries and Aquatic Sciences

The brown seaweed Ecklonia cava is known to be a rich source of phlorotannins that have diverse biological activities. Among the phlorotannins in E. cava, concentrations of dieckol and phlorofucofuroeckol-A, which were identified as major active components, were determined in different parts of the tissue. We compared the efficacy of different pretreatments for their extraction. A high- performance liquid chromatography (HPLC) method to determine phlorotannin concentrations showed good accuracy (92.64 and 94.02%, respectively), precision (3.92 and 3.94%, respectively), and linearity (r>0.996). Mature thalli contained 1.5-fold more dieckol (1.82 mg/g-dry tissue) than young thalli. In the tissues of E. cava, blade tissue contained more phlorotannins than the stipe or holdfast. Among differently dried thalli, approximately 90% or more dieckol and phlorofucofuroeckol-A were extracted from shadow-dried tissue as compared with lyophilized tissue. In sun-dried and oven-dried thalli, approximately 60% of the phlorotan- nins were extracted. Thalli washed with fresh water, boiled thalli, and steamed thalli showed reduced extraction of the compounds.