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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 |
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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