Encapsulation of lycopene extract from tomato pulp waste with gelatin and poly(gamma-glutamic acid) as carrier.
J Agric Food Chem
; 55(13): 5123-30, 2007 Jun 27.
Article
em En
| MEDLINE
| ID: mdl-17542604
ABSTRACT
Tomato pulp waste, a byproduct obtained during the processing of tomato juice, has been shown to be a rich source of lycopene. The objectives of this study were to use gelatin and poly(gamma-glutamic acid) (gamma-PGA) as coating materials for the encapsulation of lycopene extract from tomato pulp waste. Initially, lycopene was extracted with supercritical carbon dioxide, followed by microencapsulation using an emulsion system consisting of 4.5% gelatin, 10% gamma-PGA, and 4.8% lycopene extract. Analysis of differential scanning calorimetry revealed that the thermal stability of the coating material could be up to 120 degrees C, with a mean particle size of 38.7 microm based on Coulter counter analysis. The total weight of microencapsulated powder was 617 microg with the yield of lycopene being 76.5%, indicating a 23.5% loss during freeze drying. During storage of microencapsulated powder, the concentrations of cis-, trans-, and total lycopene decreased along with increasing time and temperature. A fast release of lycopene in the powder occurred at pH 5.5 and 7.0, while no lycopene was released at pH 2.0 and 3.5.
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Base de dados:
MEDLINE
Assunto principal:
Carotenoides
/
Solanum lycopersicum
/
Manipulação de Alimentos
/
Frutas
/
Resíduos Industriais
Idioma:
En
Revista:
J Agric Food Chem
Ano de publicação:
2007
Tipo de documento:
Article
País de afiliação:
Taiwan