PP24 Design of a Pickering emulsion containing an extract of the brown seaweed Dictyopteris justii with potential depigmenting activity
DOI:
https://doi.org/10.3407/pc40sr86Keywords:
Dictyopteris justii, tyrosinase, chitosan, Pickering emulsionAbstract
Marine algae are a promising source of natural cosmetic ingredients. The extraction of Dictyopteris justii was optimized using ultrasound-assisted extraction, achieving a total phlorotannin content of 2.874 ± 0.069 mg PGE/g of dry extract. The extract showed tyrosinase inhibition (IC50 = 0.51 mg/mL), suggesting its depigmenting potential. For its delivery, a Pickering emulsion stabilized with chitosan particles was formulated, reducing the use of surfactants and meeting the demand for natural and minimal-ingredient cosmetics. This study highlights the potential of D. justii, a seaweed of the Caribbean region of Colombia, as a promising source of cosmetic ingredients.
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Copyright (c) 2025 Andrea Catalina Hernández Muñoz, Diana Marcela Aragón Novoa
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