Research Keyword: natural colorant

Extraction, physicochemical properties, and antioxidant activity of natural melanin from Auricularia heimuer fermentation

Researchers optimized a method to extract melanin, a natural black pigment, from fermented wood ear mushrooms (Auricularia heimuer). Using microwave-assisted extraction with specific pH conditions, they achieved a 0.4% yield of pure melanin. The extracted melanin showed strong antioxidant properties and could be used as a natural, safe colorant and antioxidant in food and pharmaceutical products.

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Molecular Regulation of Carotenoid Accumulation Enhanced by Oxidative Stress in the Food Industrial Strain Blakeslea trispora

Researchers studied how stressful conditions can make a fungus called Blakeslea trispora produce more carotenoids, which are natural pigments used to color food products. When exposed to chemical stressors like rose bengal or hydrogen peroxide, the fungus produced significantly more carotenoids – up to four times more in some cases. The study identified specific genes and cellular pathways responsible for this increased production, which could help food companies produce natural food colorants more efficiently.

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