What food products could be processed with microwave technology?
This review focuses on recent applications of microwave processing technologies including microwave drying, heating, and sterilizing in fruit (banana, apple, olive, sour cherries, pomegranate arils, blueberries, kiwifruit, aronia, strawberry, and grape tomato), vegetables (potato, bamboo shoot, purslane leaves, onion.
What is the method of production of microwave?
Production of Microwaves Microwaves are produced by special vacuum tubes like the klystron, magnetron, and Gunn diode. The frequency of microwaves is selected to match the resonant frequency of motor wall equals so that the energy is transferred efficiently to the kinetic energy of the molecules.
What is microwave tissue processing?
By using a microwave oven, heat is generated from within the tissues which warms the tissue block uniformly in a short time. This results in faster penetration of tissue processing chemicals inside tissues resulting in rapid processing for making paraffin blocks.
What are the disadvantages of microwave?
Microwaves do have some downsides. For example, they may not be as effective as other cooking methods at killing bacteria and other pathogens that may lead to food poisoning. That’s because the heat tends to be lower and the cooking time much shorter. Sometimes, food heats unevenly.
What are various applications of microwave heating in food industry?
Microwaves have been applied in a broad range of food processing such as drying, tempering, blanching, cooking, pasteurization, sterilization, and baking. Microwave heating has considerable advantages over conventional heating methods, especially with regard to energy efficiency.
What is the main component of a microwave?
cavity magnetron
The cavity magnetron is the main component of a microwave. The magnetron is an oscillator where electrons are emitted from a hot cathode and whirl past resonant cavities which are part of the anode at speeds that generate microwave energy.
What materials are used to make a microwave?
The cover of a microwave oven is usually a one-piece, wrap-around stainless steel or metal enclosure. Both of them have a common material, stainless steel. Materials such as iron ore, chromium, silicon, nickel, carbon, nitrogen, and manganese that come out of the earth are made of stainless steel (Stainless Steel).
What is tissue processing?
Tissue processing is the technique by which fixed tissues are made suitable for embedding within a supportive medium such as paraffin, and consists of three sequential steps: dehydration, clearing, and infiltration.
What is used in microwave antigen retrieval?
A microwave antigen retrieval method using two heating steps for enhanced immunostaining on aldehyde-fixed paraffin-embedded tissue sections. Histochem Cell Biol.
What is the mechanism of microwave heating?
Microwave heating is a process whereby microwaves produced by magnetrons are directed toward reactants or heating medium, which absorb the electromagnetic energy volumetrically to achieve self-heating uniformly and rapidly.
What is microwave technology?
Microwave technology is a modern technology that produces heat energy by the rapid movement and rotation of polar molecules by rubbing against each other. Microwave irradiation will induce thermal effects, electric field effects and other nonthermal effects in substances.
Why is microwave harmful?
Microwave radiation can heat body tissue the same way it heats food. Exposure to high levels of microwaves can cause a painful burn. Two areas of the body, the eyes and the testes, are particularly vulnerable to RF heating because there is relatively little blood flow in them to carry away excess heat.
What are the advantages of microwave?
Advantages of Microwaves Higher data rates are transmitted as the bandwidth is more. Antenna size gets reduced, as the frequencies are higher. Low power consumption as the signals are of higher frequencies. Effect of fading gets reduced by using line of sight propagation.
What is the working principle of microwave heating?
The principle of microwave cooking is conversion of electromagnetic energy into thermal energy within meat. During cooking, microwave energy is absorbed by rotation of water molecules and translation of ionic components in meat; the water content and the dissolved ion content are, therefore, important factors.
What are the functions of microwave?
Top 8 Uses of Microwave Oven
- Reheating food.
- Cooking.
- Disinfect kitchen items.
- Making citrus fruits juicier.
- Heating beauty products.
- Roasting garlic.
- De-crystallising honey.
- Proofing yeast.
What are the applications of microwave heating in food processing?
Microwave heating has vast applications in the field of food processing over a period of several decades. The applications of microwave heating in food processing include drying, pasteurization, sterilization, thawing, tempering, baking of food materials etc. ( Gupta and Wong, 2007, Metaxas and Meredith, 1983 ).
What is the success of microwave processing of food?
Overall the greatest success of microwave processing of foods is in the home microwave which can now be found in most household in America and Europe.Directions for future research: The challenge for the food industry lies in the formulation of processed foods that cater to the use of microwaves for cooking or reheating.
What is microwave pasteurization?
Microwave Pasteurization. Microwave processing of foods has been the focus of much research since the 1940s. As a food-processing method, however, it became of practical interest in the 1960s with the development of multikilowatt conveyorized ovens.
Is there a mathematical model for microwave power absorption?
Microwave processing of food materials has gained significant attention due to the volumetric heating effect and shorter processing time compared to conventional processing methods. The mathematical modeling on microwave power absorption during microwave processing can be carried out based on either Lambert’s law or Maxwell’s equations.