Modeling of Inactivation of Zygosaccharomyces rouxii in Apple Juice by Surface Discharge Plasma

Autor: SUN jiali, WANG Ying, AO Yu, ZHANG Wenle, ZHANG Shaojun, BAO Xiaowei
Jazyk: English<br />Chinese
Rok vydání: 2024
Předmět:
Zdroj: Shipin Kexue, Vol 45, Iss 8, Pp 161-167 (2024)
Druh dokumentu: article
ISSN: 1002-6630
DOI: 10.7506/spkx1002-6630-20230601-003
Popis: Objective: Establish a computer model for predicting the inactivation of Zygosaccharomyces rouxii in apple juice by surface discharge plasma (SDP). Methods: The numerical simulation software COMSOL multiphysics was used to model SDP inactivation of Z. rouxii LB. The inactivation efficiency was evaluated under different conditions of discharge voltage, bubble size and sample volume. The model was then validated. Results: SDP was highly effective in deactivating hyperosmotic-resistant yeast in apple juice. The reaction rate coefficient decreased with an increase in the initial concentration of bacteria. Furthermore, the increase in discharge voltage shortened the time needed to inactivate yeasts. Bubble size variations had no significant effect on the inactivation of Z. rouxii LB, and the inactivation time was prolonged with increasing sample volume. The model simulation results agreed with the experimental data.
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