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Quantification of 3,6-anhydro-galactose in red seaweed polysaccharides and their potential skin-whitening activity

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Abstract

This study determined the composition of the monosaccharide, 3, 6-anhydrogalactose (AnGal), in red algae and explored the potential whitening activity of the extract. Using gas chromatography–mass spectrometry (GC–MS), the AnGal composition of six different species of red seaweed (Porphyra haitanensis, Gracilaria chouae, Gracilaria blodgettii, Gracilaria lemaneiformis, Eucheuma galetinae, and Gelidium amansii) was successfully analyzed, revealing molar ratios ranging from 1.0:1.0 to 1.0:3.1 of AnGal and galactose (Gal), respectively. Employing the tyrosinase inhibition assay, the skin-whitening effect of AnGal red seaweed polysaccharides was determined. Polysaccharides from P. haitanensis, G. chouae, and G. blodgettii as well as their degradation products showed higher tyrosinase inhibitory activity (inhibition rates 24.2–26.8%). These results suggest that the GC–MS approach could conveniently be used in quality control or for the quantitative determination of AnGal and Gal in red seaweed polysaccharides as well as exploring their potential application in cosmetic and functional food products. The findings here exhibited that red seaweed polysaccharides and their degradation products were potential ingredients for cosmeceutical industries.

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Acknowledgements

We are grateful to Jude Juventus Aweya for his guidance, corrections and contributions to the grammar and sentence structure of the paper This research was financially supported by grants from the National Natural Science Foundation of China (31901692); Natural Science Foundation of Guangdong Province, China (2018A030310151); Department of Education of Guangdong Province with the Teaching Reform Project (2018JGXM44).

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KLC and XQC conceived and designed the experiments. XTX, XZ, and XTX performed the experiment and wrote the manuscript. All authors revised the paper and contributed reagents/materials/analysis tools. All authors reviewed and approved the final manuscript.

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Correspondence to Xian-Qiang Chen or Kit-Leong Cheong.

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No potential conflict of interest was reported by the authors.

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Xie, XT., Zhang, X., Liu, Y. et al. Quantification of 3,6-anhydro-galactose in red seaweed polysaccharides and their potential skin-whitening activity. 3 Biotech 10, 189 (2020). https://doi.org/10.1007/s13205-020-02175-8

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  • DOI: https://doi.org/10.1007/s13205-020-02175-8

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