Method for obtaining ribitol, xylitol and other polyols by culturing trebouxiales and watanabeales microalgae, biomass resulting from the culture, and uses thereof

Cultivating Trebouxiales and Watanabeales microalgae under specific conditions addresses the inefficiencies of current ribitol and xylitol production methods, achieving high polyol concentrations for sustainable and cost-effective sweetener production applicable in diverse industries.

WO2026013327A1PCT designated stage Publication Date: 2026-01-15UNIV DE VALENCIA
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Patent Information

Application Number
PCT/ES2025/070428
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-07-11
Filing Date
2025-07-11
Publication Date
2026-01-15

AI Technical Summary

Technical Problem

Current methods for producing ribitol and xylitol, such as catalytic hydrogenation and microbial fermentation, are expensive, energy-intensive, and generate waste, while genetically modified microalgae methods produce low quantities, necessitating a sustainable and cost-effective alternative.

Method used

Cultivating Trebouxiales and Watanabeales microalgae under specific conditions to produce high concentrations of ribitol and xylitol, utilizing their natural ability to synthesize these polyols without the need for added carbon sources, offering a scalable and environmentally friendly production method.

Benefits of technology

This method achieves high polyol concentrations, reducing production costs and environmental impact, providing a sustainable source for these natural sweeteners suitable for various applications in food, cosmetics, and pharmaceuticals.

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Abstract

The present invention discloses a method for producing polyols or a mixture of polyols from microalgae at high concentrations, comprising a step of culturing the microalgae under conditions and for a time period sufficient for producing said polyols. The invention is characterised in that the microalgae belong to the orders Trebouxiales or Watanabeales. The invention further discloses the use of said microalgae, and of the biomass obtained by culturing same, as a sweetener, in sanitising products, in cosmetics and in facial and body care products.
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Citation Information

Patent Citations

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