| Full text | |
| Author(s): |
Santana, Audirene Amorim
[1]
;
Kurozawa, Louise Emy
[1, 2]
;
de Oliveira, Rafael Augustus
[1]
;
Park, Kil Jin
[1]
Total Authors: 4
|
| Affiliation: | [1] Univ Estadual Campinas, Fac Agr Engn, BR-13083875 Campinas, SP - Brazil
[2] Univ Fed Rural Rio de Janeiro, Dept Food Technol, Rio De Janeiro - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | Drying Technology; v. 31, n. 7, p. 825-836, MAY 19 2013. |
| Web of Science Citations: | 29 |
| Abstract | |
Microencapsulation of extract pequi pulp by spray drying, using Arabic gum as a microencapsulating agent, was studied. Tween 80 was used as a secondary emulsifier. A factorial design was conducted with the following independent variables: inlet air temperature (140 to 200 degrees C), surfactant concentration Tween 80 (0 to 5%), and microencapsulating agent concentration (10 to 20%) on the responses; moisture content (0.3 to 1.9%), hygroscopicity (10.7 to 14.3g adsorved water/100g solids), process yield (25.8 to 56.1%), water activity (0.07 to 0.17), vitamin C (113.0 to 306.6mg ascorbic acid/g pequi solids), and carotenoids content (10.9 to 74.3mg carotenoids/g pequi solids). Only powder moisture content, hygroscopicity, water activity, and vitamin C content were statistically influenced by independent variables. Spray drying was optimized for maximum vitamin C and carotenoids content and minimal water content and hygroscopicity. Powder obtained under optimum conditions was characterized as to particle morphology, bulk, absolute density, and particle size distribution. (AU) | |