Evaluation of extraction procedures for the CE determination of phenolic acids in Euterpe oleraceae food products - Fukuji, Tatiana Shizue; Tonin, Fernando Gustavo; Tavares, Marina Franco Maggi (Symposium on Biotechnology, Biomedical, Biopharmaceutical and Industrial Applications of Capilary Electrophoresis and Microchip Technology, 2009)