Supercritical carbon dioxide was applied for the pasteurization of coconut water to guarantee its microbial stability and preserve its sensory and nutritional quality attributes. A multi-batch apparatus was used to test supercritical carbon dioxide feasibility to inactivate the natural microbial flora of coconut water as a function of pressure (80 and 120 bar), temperature (22, 30, 35, 40 and 45°C) and time (from 5 to 60 min). The study indicated that 120 bar, 40°C, 30 min were the optimal process conditions to induce 5 Log reductions of mesophilic microorganisms, lactic acid bacteria, yeasts and molds and 7 Log of total coliforms. A deep chemical/physical and sensory char-acterization was also performed to investigate the impact of the treat-ment on the quality traits of fresh coconut water. To complete the study, a thermally pasteurized (90°C for 1 minute) coconut water was also considered in order to compare the impact of the thermal and non-thermal processes

Cappelletti, M.; Ferrentino, G.; Endrizzi, I.; Aprea, E.; Betta, E.; Corollaro, M.L.; Gasperi, F.; Spilimbergo, S. (2013). Supercritical carbon dioxide pasteurization of coconut water: a sport drink with a high vitaminic and nutritional content. In: 5th International congress Mountain, sport & health (MSH2013): updating study on research from laboratory to field, 9th-10th December 2013, Rovereto (TN), Italy. handle: http://hdl.handle.net/10449/24358

Supercritical carbon dioxide pasteurization of coconut water: a sport drink with a high vitaminic and nutritional content

Endrizzi, Isabella;Aprea, Eugenio;Betta, Emanuela;Corollaro, Maria Laura;Gasperi, Flavia;
2013-01-01

Abstract

Supercritical carbon dioxide was applied for the pasteurization of coconut water to guarantee its microbial stability and preserve its sensory and nutritional quality attributes. A multi-batch apparatus was used to test supercritical carbon dioxide feasibility to inactivate the natural microbial flora of coconut water as a function of pressure (80 and 120 bar), temperature (22, 30, 35, 40 and 45°C) and time (from 5 to 60 min). The study indicated that 120 bar, 40°C, 30 min were the optimal process conditions to induce 5 Log reductions of mesophilic microorganisms, lactic acid bacteria, yeasts and molds and 7 Log of total coliforms. A deep chemical/physical and sensory char-acterization was also performed to investigate the impact of the treat-ment on the quality traits of fresh coconut water. To complete the study, a thermally pasteurized (90°C for 1 minute) coconut water was also considered in order to compare the impact of the thermal and non-thermal processes
Coconut water
Supercritical carbon dioxide
Pasteurization
Natural microbial flora
Quality
Nutritional and sensory attributes
2013
Cappelletti, M.; Ferrentino, G.; Endrizzi, I.; Aprea, E.; Betta, E.; Corollaro, M.L.; Gasperi, F.; Spilimbergo, S. (2013). Supercritical carbon dioxide pasteurization of coconut water: a sport drink with a high vitaminic and nutritional content. In: 5th International congress Mountain, sport & health (MSH2013): updating study on research from laboratory to field, 9th-10th December 2013, Rovereto (TN), Italy. handle: http://hdl.handle.net/10449/24358
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