Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/90869
Type: Artigo de periódico
Title: Microparticles Obtained By Complex Coacervation: Infuence Of The Type Of Reticulation And The Drying Process On The Release Of The Core Material [micropartículas Produzidas Por Coacervação Complexa: Infuência Do Tipo De Reticulação E Do Processo De Secagem Na Liberação Do Material De Recheio]
Author: Alvim I.D.
Grosso C.R.F.
Abstract: Microparticles obtained by complex coacervation were crosslinked with glutaraldehyde or with transglutaminase and dried using freeze drying or spray drying. Moist samples presented Encapsulation Efficiency (%EE) higher than 96%. The mean diameters ranged from 43.7 ± 3.4 to 96.4 ± 10.3 μm for moist samples, from 38.1 ± 5.36 to 65.2 ± 16.1 μm for dried samples, and from 62.5 ± 7.5 to 106.9 ± 26.1 μm for rehydrated microparticles. The integrity of the particles without crosslinking was maintained when freeze drying was used. After spray drying, only crosslinked samples were able to maintain the wall integrity. Microparticles had a round shape and in the case of dried samples rugged walls apparently without cracks were observed. Core distribution inside the particles was multinuclear and homogeneous and core release was evaluated using anhydrous ethanol. Moist particles crosslinked with glutaraldehyde at the concentration of 1.0 mM.g-1 protein (ptn), were more efficient with respect to the core retention compared to 0.1 mM.g-1 ptn or those crosslinked with transglutaminase (10 U.g-1 ptn). The drying processes had a strong influence on the core release profile reducing the amount released to all dry samples.
Editor: 
Rights: aberto
Identifier DOI: 10.1590/S0101-20612010000400036
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-79952343113&partnerID=40&md5=96fa361bb7a1652e4f70ab04aae3a925
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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