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Thumkasem N, On-Mee T, Kongsinkaew C, Chittapun S, Pornpukdeewattana S, Ketudat-Cairns M, Thongprajukaew K, Antimanon S, Charoenrat T. Enhanced high β-carotene yeast cell production by Rhodotorula paludigena CM33 and in vitro digestibility in aquatic animals. Sci Rep 2024; 14:9188. [PMID: 38649733 PMCID: PMC11035689 DOI: 10.1038/s41598-024-59809-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 04/15/2024] [Indexed: 04/25/2024] Open
Abstract
This study assessed Rhodotorula paludigena CM33's growth and β-carotene production in a 22-L bioreactor for potential use as an aquatic animal feed supplement. Optimizing the feed medium's micronutrient concentration for high-cell-density fed-batch cultivation using glucose as the carbon source yielded biomass of 89.84 g/L and β-carotene concentration of 251.64 mg/L. Notably, using sucrose as the carbon source in feed medium outperforms glucose feeds, resulting in a β-carotene concentration of 285.00 mg/L with a similar biomass of 87.78 g/L. In the fed-batch fermentation using Sucrose Feed Medium, R. paludigena CM33 exhibited high biomass production rates (Qx) of 0.91 g/L.h and remarkable β-carotene production rates (Qp) of 2.97 mg/L.h. In vitro digestibility assays showed that R. paludigena CM33, especially when cultivated using sucrose, enhances protein digestibility affirming its suitability as an aquatic feed supplement. Furthermore, R. paludigena CM33's nutrient-rich profile and probiotic potential make it an attractive option for aquatic nutrition. This research highlights the importance of cost-effective carbon sources in large-scale β-carotene production for aquatic animal nutrition.
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Affiliation(s)
- Namphet Thumkasem
- Department of Biotechnology, Faculty of Science and Technology, Thammasat University (Rangsit Center), Pathum Thani, 12120, Thailand
| | - Thapanut On-Mee
- Department of Biotechnology, Faculty of Science and Technology, Thammasat University (Rangsit Center), Pathum Thani, 12120, Thailand
| | - Chatchol Kongsinkaew
- Department of Biotechnology, Faculty of Science and Technology, Thammasat University (Rangsit Center), Pathum Thani, 12120, Thailand
| | - Supenya Chittapun
- Department of Biotechnology, Faculty of Science and Technology, Thammasat University (Rangsit Center), Pathum Thani, 12120, Thailand
| | - Soisuda Pornpukdeewattana
- Division of Fermentation Technology, School of Food Industry, King Mongkut's Institute of Technology Ladkrabang, Bangkok, 10520, Thailand
| | - Mariena Ketudat-Cairns
- Center for Molecular Structure, Function, and Application, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Karun Thongprajukaew
- Applied Aquatic Animal Nutrition Laboratory, Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Songkhla, 90110, Thailand
| | - Sompot Antimanon
- Industrial Bioprocess Technology Research Team, Functional Ingredients and Food Innovation Research Group, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand
| | - Theppanya Charoenrat
- Department of Biotechnology, Faculty of Science and Technology, Thammasat University (Rangsit Center), Pathum Thani, 12120, Thailand.
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