Ohmic heating is a cutting-edge technique which utilizes electrical resistance to generate heat and offers a revolutionary approach to millet processing. This method directly converts electrical energy into heat within the millet, ensuring rapid and uniform temperature rise. Unlike traditional thermal methods such as roasting or boiling, ohmic heating enhances energy efficiency and significantly reduces processing times while preserving essential nutrients. The chapter deals with the fundamental principles of ohmic heating, emphasizing its reliance on the electrical conductivity of millet, which varies with moisture content and intrinsic properties. Applications of ohmic heating in millet processing include pretreatment, cooking and pasteurization. In pretreatment, it effectively blanches and hydrates millet grains, preserving their nutritional content. During cooking, ohmic heating ensures even heat distribution, improving texture and taste, particularly for ready-to-eat products. For pasteurization, the rapid, uniform heating reduces microbial load without compromising quality. The advantages of ohmic heating over conventional methods include enhanced energy efficiency, uniform heating, nutrient preservation, and improved product quality. However, challenges such as high initial investment, the need for technical expertise, and regulatory hurdles must be addressed for broader adoption.

错误:搜索内容不能为空,请输入英文关键词
错误:关键词超出字数限制,请精简
高级检索

Ohmic Heating: A New Dimension in Millet Processing (Examining the Electrical Approach for Efficient Heat Transfer)

  • Prabha Haldkar,
  • Alka Mishra

摘要

Ohmic heating is a cutting-edge technique which utilizes electrical resistance to generate heat and offers a revolutionary approach to millet processing. This method directly converts electrical energy into heat within the millet, ensuring rapid and uniform temperature rise. Unlike traditional thermal methods such as roasting or boiling, ohmic heating enhances energy efficiency and significantly reduces processing times while preserving essential nutrients. The chapter deals with the fundamental principles of ohmic heating, emphasizing its reliance on the electrical conductivity of millet, which varies with moisture content and intrinsic properties. Applications of ohmic heating in millet processing include pretreatment, cooking and pasteurization. In pretreatment, it effectively blanches and hydrates millet grains, preserving their nutritional content. During cooking, ohmic heating ensures even heat distribution, improving texture and taste, particularly for ready-to-eat products. For pasteurization, the rapid, uniform heating reduces microbial load without compromising quality. The advantages of ohmic heating over conventional methods include enhanced energy efficiency, uniform heating, nutrient preservation, and improved product quality. However, challenges such as high initial investment, the need for technical expertise, and regulatory hurdles must be addressed for broader adoption.