Produção Nacional
Revisado por pares
Microencapsulation of pequi pulp by spray drying: use of modified starches as encapsulating agent
2014; Sociedade Brasileira de Engenharia Agrícola; Volume: 34; Issue: 5 Linguagem: Inglês
10.1590/s0100-69162014000500017
ISSN1809-4430
AutoresAudirene Amorim Santana, Rafael Augustus de Oliveira, Louise Emy Kurozawa, Kil J. Park,
Tópico(s)Bee Products Chemical Analysis
ResumoThe aim of this study was to evaluate the microencapsulation of pequi pulp by spray drying. A central composite rotational design was used in order to evaluate the effect of the independent variables: inlet air temperature, surfactant concentration and modified starch concentration. The dependent variables were assumed as yield of the process and the product features microencapsulated. A selection of the best process condition was performed to obtain the best condition of a product with the highest vitamin C and carotenoids content. Powders showed moisture content below 2%. The experimental values of hygroscopicity, yield, water activity, total carotenoids and vitamin C powders ranged from 7.96 to 10.67 g of adsorbed water/100g of solids, 24.34 to 49.80%, 0.13 to 0.30, 145.78 to 292.11 mg of ascorbic acid/g of pequi solids and 15.51 to 123.42 mg of carotenoids/g of pequi solids, respectively. The inlet air temperature 140°C, the surfactant concentration of 2.5% and the modified starch concentration of 22.5% was recommended as the selected condition. By the scanning electron microscopy, it was observed that most of the particles had spherical shape and smooth surface.
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