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Ohmic heating (joule heating, resistance heating, or electroconductive heating) generates heat by passage of electrical current through food which resists the flow of electricity. Heat is generated rapidly and uniformly in the liquid matrix as well as in particulates, producing a higher quality sterile product that is suitable for aseptic processing.

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  • Ohmic heating (food processing) (en)
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  • Ohmic heating (joule heating, resistance heating, or electroconductive heating) generates heat by passage of electrical current through food which resists the flow of electricity. Heat is generated rapidly and uniformly in the liquid matrix as well as in particulates, producing a higher quality sterile product that is suitable for aseptic processing. (en)
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  • Ohmic heating (joule heating, resistance heating, or electroconductive heating) generates heat by passage of electrical current through food which resists the flow of electricity. Heat is generated rapidly and uniformly in the liquid matrix as well as in particulates, producing a higher quality sterile product that is suitable for aseptic processing. Electrical energy is linearly translated to thermal energy as electrical conductivity increases, and this is the key process parameter that affects heating uniformity and heating rate. This heating method is best for foods that contain particulates suspended in a weak salt containing medium due to their high resistance properties. Ohmic heating is beneficial due to its ability to inactivate microorganisms through thermal and non-thermal cellular damage. This method can also inactivate antinutritional factors thereby maintaining nutritional and . However, ohmic heating is limited by viscosity, electrical conductivity, and fouling deposits. Although ohmic heating has not yet been approved by the Food and Drug Administration (FDA) for commercial use, this method has many potential applications, ranging from cooking to fermentation. (en)
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