Nanoemulsions of β-carotene using a high-energy emulsification-evaporation technique

• Autor(a) principal: Silva, Hélder D.
• Data de Publicação: 2011
• Outros Autores: Cerqueira, M. A., Souza, B. W. S., Ribeiro, Clara, Avides, Maria do Carmo, Quintas, Mafalda A. C., Coimbra, Jane Sélia dos Reis, Cunha, M. G. C., Vicente, A. A.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/1822/11337
• topic: β-Carotene; Nanoemulsion; Size distribution; Storage stability; beta-Carotene; Science & Technology

Nanoemulsions of β-carotene were prepared using a high-energy emulsification-evaporation technique based on a 23 level factorial design. Results show that it is possible to obtain dispersions at a nanoscale range. Process parameters such as time and shear rate of homogenization affected significantly particle size distribution in terms of volume-weighted mean diameter and surface-weighted mean diameter. The obtained nanoemulsions presented a volume-surface diameter ranging from 9 to 280 nm immediately after the production of particles, displaying in all cases a monomodal size distribution. Those nanoemulsions showed a good physical stability during 21 days storage. The stability was evaluated by the maintenance of size distribution. However, β-carotene retention inside the micelles and color were affected by storage. Processing conditions also influenced storage stability.