ISSN: 0973-7510

E-ISSN: 2581-690X

Research Article | Open Access
Jubanlak Mary Pohsnem1, Bhaskar Jyoti Nath2, Smita Sarma3 and Deep Prakash Parasar4
1Programme of Medical Laboratory Technology, Faculty of Paramedical Sciences, Assam down town University, Guwahati, Assam, India.
2Department of Biotechnology, Gauhati University, Guwahati, Assam, India.
3Programme of Chemistry, Faculty of Sciences, Assam down town University, Guwahati, Assam, India.
4Programme of Biotechnology, Faculty of Science, Assam down town University, Guwahati, Assam, India.
Article Number: 10284 | © The Author(s). 2025
J Pure Appl Microbiol. 2025;19(3):1908-1918. https://doi.org/10.22207/JPAM.19.3.16
Received: 01 February 2025 | Accepted: 30 May 2025 | Published online: 13 August 2025
Issue online: September 2025
Abstract

Carotenoids are a group of compounds that provide various health protective benefits. Several microbes, including yeasts, are known to produce such compounds as secondary metabolites and thus these yeasts can be utilized as microbial cell factories for mass production of such compounds. In this investigation, pigment making yeast Rhodotorula taiwanensis was collected from fermentative cake of Bodo community of Assam. The pigment was extracted through acetone-petroleum ether partition and was identified through ultra-high pressure liquid chromatography with tandem mass spectrometry (UHPLC-MS/MS) technique which reveals the presence of Resveratrol, Quercetin, Phytofluene and Xanthophyll. The crude extract showed antimicrobial properties towards Staphylococcus aureus, Escherichia coli, Candida albicans and Pseudomonas aeruginosa. Further, effect of nutrient and UV radiation was examined on pigment production, where glucose and yeast extract medium showed higher amount of pigment production compared to sucrose and tryptone, respectively. This study emphasizes upon yeast pigments and the production for their commercial use in various field of industries.

Keywords

Yeast, Rhodotorula taiwanensis, Carotenoids, Spectroscopy, UHPLC-MS/MS, Assam

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© The Author(s) 2025. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.