Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2792
Title: Inactivation kinetics of alicyclobacillus acidoterrestris spores in orange juice by ohmic heating: Effects of voltage gradient and temperature on inactivation
Authors: Baysal, Ayşe Handan
İçier, Filiz
Keywords: Alicyclobacillus acidoterrestris
Food handling
Electrostimulation
Bacterial spore
Sweet orange
Issue Date: Feb-2010
Publisher: International Association for Food Protection
Source: Baysal, A. H., and İçier, F. (2010). Inactivation kinetics of alicyclobacillus acidoterrestris spores in orange juice by ohmic heating: Effects of voltage gradient and temperature on inactivation. Journal of Food Protection, 73(2), 299-304. doi:10.4315/0362-028X-73.2.299
Abstract: The effectiveness of ohmic and conventional heating for reducing spores of Alicyclobacillus acidoterrestris was investigated in commercial pasteurized orange juice. The kinetic parameters (D- and z-values) were determined during ohmic and conventional heating. The effects of temperature (70. 80, and 90 °C) and heating time (0, 10, 15, 20, and 30 min) on inactivation of A. acidoterrestris spores during ohmic heating in orange juice were significant (P < 0.05). For 70°C, the voltage gradient also had an effect on inactivation kinetics. At 30 V/cm, D-values at 70, 80, and 90°C were 58.48, 12.24, and 5.97 min, respectively. D-values at corresponding temperatures for conventionally heated spores were 83.33, 15.11, and 7.84 min, respectively. Results showed significantly higher lethality for spores treated with ohmic heating than for spores treated with conventional heating. Conventional heating was ineffective for pasteurizing orange juice, whereas the maximum ohmic heating treatment applied at 30 V/cm was sufficient to inactivate 5 log units of A. acidoterrestris spores. Copyright ©, International Association for Food Protection.
URI: http://doi.org/10.4315/0362-028X-73.2.299
http://hdl.handle.net/11147/2792
ISSN: 0362-028X
0362-028X
Appears in Collections:Food Engineering / Gıda Mühendisliği
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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