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|Title:||Non-thermal microbial inactivation by using supercritical carbon dioxide: synergic effect of process parameters|
|Author:||Silva, Eric Keven|
Alvarenga, Verônica O.
Bargas, Matheus A.
Sant'Ana, Anderson S.
Meireles, M. Angela A.
|Abstract:||In this study, we evaluated the influence of CO2 volume ratio (%) and its synergic effect with the pressure (MPa), temperature (°C) and process time (min) on the inactivation of Lactobacillus casei cells inoculated in apple juice (107 CFU/mL). The effects of process variables on the logarithmic reduction of L. casei cell counts were estimated by a two-level Plackett–Burman factorial design. A Box–Behnken design was subsequently employed to evaluate the interaction between the different factors on the supercritical microbial inactivation. The results showed that the process intensification led to a higher logarithmic reduction. Operating at 15 MPa, 55 °C, 30 min and a 70% CO2 volume ratio, the process was able to reduce L. casei cell counts by more than 6 log cycles. In addition, this work reports the validation of an experimental apparatus assembled by our research group for food processing by employing supercritical carbon dioxide|
|Subject:||Suco de maçã|
|Appears in Collections:||FEA - Artigos e Outros Documentos|
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