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<p>This study aims to explore the potential of red <i>Dunaliella salina</i>, which naturally thrives in the salt extraction ponds of Sabkhet Sidi El Heni, for high-value applications. The biochemical analysis of <i>D. salina</i> red paste revealed its richness in lipids (23.12% Dry Weight: DW), proteins (10.45% DW), and carbohydrates (6.78% DW), highlighting its suitability for biomass production. The strain’s lipid profile is unique, dominated by monounsaturated fatty acids (42.54% TFA (Total Farry Acids)), including vaccenic and oleic acids, both linked to health benefits. Additionally, the Tunisian <i>D. salina</i> exhibited high levels of <i>β</i>-carotene (32.65% TC (Total carotenoids)), <i>all-trans</i>-lutein (8.02% TC), and <i>all-trans</i>-zeaxanthin (4.82% TC), making it promising for pharmaceutical and nutraceutical applications. The anti-aging potential of <i>D. salina</i> extract was confirmed through significant inhibitory activity against tyrosinase, collagenase, and hyaluronidase, key enzymes involved in skin aging. These findings, highlight the potential to economically support the saltwork by proposing a sustainable business model based on the exploitation of D. salina for the production of cosmetic, nutraceutical, and pharmaceutical products.</p>

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Unlocking the Potential of red Dunaliella salina from Sabkhet Sidi El Heni saltworks-Tunisia : A Sustainable Approach to Exploiting Renewable Resources

  • 期刊论文

  • 发表日期：

    2026年5月25日

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  • Hanène Medini,
  • Khaled Athmouni

摘要

This study aims to explore the potential of red Dunaliella salina, which naturally thrives in the salt extraction ponds of Sabkhet Sidi El Heni, for high-value applications. The biochemical analysis of D. salina red paste revealed its richness in lipids (23.12% Dry Weight: DW), proteins (10.45% DW), and carbohydrates (6.78% DW), highlighting its suitability for biomass production. The strain’s lipid profile is unique, dominated by monounsaturated fatty acids (42.54% TFA (Total Farry Acids)), including vaccenic and oleic acids, both linked to health benefits. Additionally, the Tunisian D. salina exhibited high levels of β-carotene (32.65% TC (Total carotenoids)), all-trans-lutein (8.02% TC), and all-trans-zeaxanthin (4.82% TC), making it promising for pharmaceutical and nutraceutical applications. The anti-aging potential of D. salina extract was confirmed through significant inhibitory activity against tyrosinase, collagenase, and hyaluronidase, key enzymes involved in skin aging. These findings, highlight the potential to economically support the saltwork by proposing a sustainable business model based on the exploitation of D. salina for the production of cosmetic, nutraceutical, and pharmaceutical products.