Research articles
ScienceAsia 49 (2023):ID 791-796 |doi:
10.2306/scienceasia1513-1874.2023.081
Variations in total phenolics in Sargassum plagiophyllum and
their cytotoxic activities
Raphatphorn Navakanitworakula, Dailamee Wansoa, Sinjai Phetcharatb, Parinuch Chumkaewc, Jaruwan Mayakunb,*
ABSTRACT: The brown alga Sargassum plagiophyllum is one of the most abundant species in the Andaman Sea. It
is rich in phenolic compounds that show variations possibly influenced by biotic and abiotic factors. In the present
study, variations of total phenolic compounds within-thallus and in different life stages were investigated, and the
cytotoxicity of the phenolic compounds were evaluated against cancer cell proliferation. The results showed that
total phenolic compounds in S. plagiophyllum significantly differed within-thallus with the highest concentration being
found in the reproductive cells. There was significant difference in concentrations among life stages, with the lowest
concentration found in juvenile plants. Total phenolic compounds revealed anticancer activity against colon (HCT116
and PMF-k014) and cervical cancer cells (HeLa and SiHa). The cytotoxic activity of the extracted phenolics produced
half-maximal inhibitory concentrations (IC50 values) of >80 ?g/ml against the cell lines HCT116 and PMF-k014, and
of 44?11.4 and 41.9?6.1 ?g/ml against HeLa and SiHa, respectively. Overall, this work found that total phenolic
compounds from S. plagiophyllum have potential health benefits. In addition, the results of the study imply that to
collect and use total phenolic compounds of S. plagiophyllum efficiently and sustainably, parts of the thallus and life
stages should be carefully considered.
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a |
Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University,
Songkhla 90110 Thailand |
b |
Department of Biological Science, Faculty of Science, Prince of Songkla University, Songkhla 90110 Thailand |
c |
Faculty of Science and Industrial Technology, Prince of Songkla University, Surat Thani Campus,
Surat Thani 84000 Thailand |
* Corresponding author, E-mail: jaruwan.may@psu.ac.th
Received 27 Nov 2022, Accepted 2 Aug 2023
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