The study of preservation process of the assai pulp through the application of hurdle technology was done by the application of the following preservation factors: reduction of pH at about 3.5 by the addition of 0.5% w/w of citric acid, thermal treatment (82.5°C for 1 min), reduction of the water activity by the addition of sucrose (10, 25 and 40% w/w) and addition of potassium sorbate (0.075 and 0.15% w/w). A full factorial experimental design was used in the elaboration of the formulations of the product, that were stored at 25°C in the absence of light for 5 months. The formulations 1, 2 and 8 were discarded sensorially before 3 months storage. Besides, the formulations 2 (40%w/w of sucrose), 4 (40%w/w of sucrose and 0.15%w/w of potassium sorbate) and 5 (25%w/w of sucrose and 0.075%w/w of potassium sorbate) showed a good overall acceptability shelf-life time of 5 months.
assai; hurdle technology; preservation
