Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/55185
Título: | Microencapsulation of citronella oil with carboxymethylated tamarind gum |
Autor(es): | Khounvilay, K. Estevinho, Berta N. Rocha, Fernando A. Oliveira, J. M. Vicente, A. A. Sittikijyothin, Wancheng |
Palavras-chave: | Citronella oil tamarind gum microencapsulation carboxymethylation spray-drying |
Data: | 2018 |
Editora: | Walailak University |
Revista: | Walailak Journal of Science and Technology |
Citação: | Khounvilay, K.; Estevinho, Berta N.; Rocha, Fernando A.; Oliveira, José Maria; Vicente, António A.; Sittikijyothin, Wancheng, Microencapsulation of citronella oil with carboxymethylated tamarind gum. Walailak Journal of Science and Technology, 15(7), 515-527, 2018. |
Resumo(s): | Tamarind gum (TG) and carboxymethylated tamarind gum (CTG) were used as wall material to prepare citronella oil microcapsules by spray-drying. The aim of this work was to study the effect of wall-to-core ratio and fluid viscosity on emulsion droplet and microcapsule size, in order to maximize encapsulation efficiency (EE). EE was directly influenced by gum-to-oil ratio variations. Results showed that emulsion droplet size (D32) of CTG ranged between 0.18 to1.31 mm, smaller than those obtained for TG, which ranged from 0.87 to 2.91 mm. CTG microcapsules had a smooth surface and a spherical shape, as observed by scanning electron microscopy (SEM). Surface oil content and total oil content affected encapsulation efficiency. TG microcapsules showed lower EE than CTG microcapsules, which was related to the viscosity of gum to oil ratio. The maximum EE occurred at 1.14 gum to oil ratio for CTG microcapsules (87 %). |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/55185 |
ISSN: | 1686-3933 |
e-ISSN: | 2228-835X |
Versão da editora: | http://wjst.wu.ac.th |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_47776_1.pdf | 838,51 kB | Adobe PDF | Ver/Abrir |