Docosahexaenoic Acid Ethyl Esther (dhaee) Microcapsule Production By Spray-drying: Optimization By Experimental Design [obtenção De Microcápsulas Do éster Etílico Do ácido Docosa-hexaenoico (dhaee) Por Atomização: Otimização Através De Planejamento Experimental]

Docosahexaenoic acid is an essential polyunsaturated fatty acid with important metabolic activities. Its conjugated double bonds make it susceptible to decomposition. Its stability may be improved through fatty acid entrapment with a spray-drying technique; however, the many parameters involved in this technique must be considered to avoid affecting the final product quality. Therefore, this study aimed to evaluate the entrapment conditions and yields of fish oil enriched with docosahexaenoic acid ethyl ester. Microcapsules were obtained from Acacia gum using a spray-drying technique. The experimental samples were analyzed by chromatography and delineated by Statistica software, which found the following optimum entrapment conditions: an inlet temperature of 188 °C; 30% core material; an N 2 flow rate of 55 mm; and a pump flow rate of 12.5 mL/minute. 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