First report on chemistry of a red seaweed Croisettea sp. from the coastal area of Yogyakarta, Indonesia

ABSTRACT

A red seaweed Croisettea sp. from Indonesia is reported for the first time. The species was collected from the south coastal area of Yogyakarta, Indonesia. The molecular identification was carried out by amplification of mitochondria gene (cox). The phylogenetic analysis revealed that the red seaweed belongs to the family Kallymeniaceae from the genus Croisettea with 93.3% similarity to Croisettea tasmanica. The ash and protein contents were 16.12% and 14.51% of the dry weight, respectively. Analysis of FT-IR spectra indicated that the seaweed contained galactan sulphate with gelling property. The spectra of GC-MS showed the presence of saturated fatty acids (palmitic acid and stearic acid) and unsaturated fatty acid (oleic acid) and phthalate ester derivative. The spectra of ¹ H-NMR confirmed the presence of the phthalate derivative Bis(2-ethylhexyl phthalate).

KEYWORDS:

• Red seaweed
• Croisettea sp.
• galactan sulphate
• palmitic acid
• stearic acid
• oleic acid
• phthalate

Acknowledgements

NK would like to thank the Program DIKTI-Fulbright Visiting Scholar 2019 to do part of the seaweed research at Department of Biomedical and Pharmaceutical Sciences, School of Pharmacy, University of Rhode Island.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by Dikti Funded-Fulbright Visiting Scholar 2019.