Nanoemulsions of β-carotene using a high-energy emulsification-evaporation tech...

• Autor(es): Silva, Hélder D. ; 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.
• Data: 2011
• Identificador Persistente: http://hdl.handle.net/1822/11337
• Origem: RepositóriUM - Universidade do Minho
• Assunto(s): β-Carotene; Nanoemulsion; Size distribution; Storage stability
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

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.