Giveself solarcell 6008/5/2023 Our analytical treatment is a generalization of a previous analysis of localized “point sourcesâ€. ![]() Here, we study extended power sources that distribute heat from the photosphere to the deep interior of the planet. One suggested origin for this discrepancy is heat deposited deep inside the atmospheres of these “hot Jupitersâ€. The observed radii of many giant exoplanets in close orbits exceed theoretical predictions. ![]() Thus, high-temperature ohmic-heating treatment can be effectively used to pasteurize fresh orange juice with minimal sensory deterioration.Įxtended Heat Deposition in Hot Jupiters: Application to Ohmic Heating Sensory evaluation tests showed no difference between fresh and ohmic-heated orange juice. Ohmic-heated orange juice maintained higher amounts of the five representative flavor compounds than did heat-pasteurized juice. The ohmic heating treatment reduced pectin esterase activity by 98%. Microbial counts showed complete inactivation of bacteria, yeast, and mold during ohmic and conventional treatments. Orange juice was treated at temperatures of 90, 120, and 150 degrees C for 1.13, 0.85, and 0.68 s in an ohmic heating system. Effects of ohmic heating on the quality of orange juice were examined and compared to those of heat pasteurization at 90 degrees C for 50 s. The scope of this study is the effect of ohmic heating thermal treatment on liquid fruit juice made of oranges. KGaA, Weinheim.Įffect of ultrahigh-temperature continuous ohmic heating treatment on fresh orange juice. Finally, the prospects and potential implications of ohmic heating in future research in chemical synthesis are proposed. The advantages and limitations of this heating method, as well as its main current applications are also discussed. A brief description of the ohmic reactor prototype in operation is presented as well as recent examples of its use in organic synthesis at laboratory scale, thus showing the current state of the research. It presents the fundamentals of ohmic heating and makes a qualitative and quantitative comparison with other common heating methods. This Concept article focuses on the use of ohmic heating as a new tool for organic synthesis. Its use in organic synthesis, in the heating of chemical reactors, is an emerging method that shows great potential, the development of which has started recently. ![]() The ohmic heating also known as direct Joule heating, is an advanced thermal processing method, mainly used in the food industry to rapidly increase the temperature for either cooking or sterilization purposes. Silva, Vera L M Santos, Luis M N B F Silva, Artur M S Ohmic Heating: An Emerging Concept in Organic Synthesis.
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