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Extraction and Characterization of Beta-glucan Methyl Esters Derived From UV-mutated Marine Yeast and their Applications in Cosmetics

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Abstract

Beta-glucan is a natural polysaccharide, abundantly present in the cell walls of several fungi, majorly in mushrooms, yeasts and many bacterial species. It can be used in the cosmetics industry as it has good anti-aging, wound healing and antioxidant properties. Marine yeasts were isolated from the backwater samples derived from Andaman-Nicobar Islands, India and screened for beta-glucan production. Among 38 yeast isolates, 5 isolates could produce beta-glucan and they were further chosen for UV mutagenesis at different time intervals for strain improvement. Mutated marine yeast isolate DAMB1 was found to be producing the highest amount of beta-glucan (1.67 gm/100 ml). Further, potential isolates were characterized microscopically and checked for their antioxidant activity and anti-bacterial activity against bacterial pathogens. The beta-glucan compounds exhibited good antioxidant activity as well as good antimicrobial activity against all the pathogens and highest against Staphylococcus aureus (23 ± 0.7 mm). The yeast-derived compound was structurally characterized using GCMS analysis and represented the presence of Ethylthiophosphonamide Acid, O-methyl Ester, and 1,2,4-Trithiolane which are highly pure fatty acid methyl esters. The extracted beta-glucan compound from potential yeast isolate was used to formulate beta-glucan almond scrub consisting of sweet almond oil and almond powder. The beta-glucan almond scrub showed no side effects or infection on the skin after a period of usage (10 weeks) rather it smoothened out the rough skin to an extent. Finally, the yeast was further characterized and identified as Rhodotorula sp. DAMB1 (Acc. No. MK968443) through 18s rRNA sequencing analysis.

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Acknowledgements

The authors are highly grateful to the whole management of Vellore Institute of Technology, Vellore, Tamil Nadu for delivering the essential support and facilities including GCMS and SEM (DST-FIST) for the completion of the work.

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The authors declare that no fund and financial support was received during the preparation of the manuscript.

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All persons who meet the authorship criteria are listed as authors, and all authors certify that they have participated sufficiently in the work to take public responsibility for the content, including participation in the concept, design, acquisition and analysis of the data, writing, or revision of the manuscript. All the authors have read and approved the manuscript. Furthermore, all authors certify that this material or similar material has not been and will not be submitted to or published in any other publication before its appearance in International Microbiology. Conceptualization: K. V. Bhaskara Rao, Anwesha Sarkar; Methodology: K.V. Bhaskara Rao, Anwesha Sarkar; Formal analysis and investigation: Anwesha Sarkar, Angelin Mary Philip, Darshali P. Thakker; Data curation: Angelin Mary Philip and Darshali P. Thakker; Writing- Original draft preparation: Anwesha Sarkar; Writing- Review and editing: K. V. Bhaskara Rao and Anwesha Sarkar; Resources: K. V. Bhaskara Rao; Supervision: K. V. Bhaskara Rao.

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Correspondence to K. V. Bhaskara Rao.

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Sarkar, A., Philip, A.M., Thakker, D.P. et al. Extraction and Characterization of Beta-glucan Methyl Esters Derived From UV-mutated Marine Yeast and their Applications in Cosmetics. Thalassas 40, 721–733 (2024). https://doi.org/10.1007/s41208-024-00661-x

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  • DOI: https://doi.org/10.1007/s41208-024-00661-x

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