Squid is a kind of food that modern people like to eat, and it is also a kind of protein-rich food for weight loss. Squid also called "soft fish", can be eaten fresh or dried. Squid is rich in nutrients, can promote appetite, and improve immunity. It is suitable for many people, such as parturients, pregnant women, and the elderly. You can eat it with confidence. Whole Round Squid,Oval Squid,Round Squid,Whole Squid Zhejiang Industrial Group Co., Ltd. , https://www.xingyeseafood.com
At the same time, under the action of microwaves, microorganisms such as harmful bacteria and insect pests in the material are subjected to the action of non-polar thermal motion and polar rotation to change the state of arrangement and movement, which causes the organism to be denatured by protein. Inactivation, and relaxation, cleavage or recombination of several hydrogen bonds of ribonucleic acid (RNA) and deoxyribonucleic acid (DNA) in cells, interfere with or destroy its normal metabolism, inheritance and proliferation, inhibit or kill bacteria and pests. It grows to achieve the effects of insecticide, sterilization and preservation.
Features of microwave heating:
(1) The heating speed is fast because the microwave can penetrate into the interior of the food material, the drying speed is fast, the irritating time is short, and only the time of 1/10-1/100 (one part or one tenth) of the traditional heating method is needed. This increases productivity and speeds up capital turnover.
(2) Low-temperature sterilization, maintaining nutrition Microwave heating sterilization is sterilized by thermal effect and non-thermal effect (biological effect), so it has the characteristics of low temperature and short-time sterilization compared with conventional heat sterilization. Therefore, it is not only safe and safe, but also keeps the nutrients of foods from being lost and destroyed. It is conducive to maintaining the original quality of the products, with less loss of color, aroma, taste and nutrients, and is extremely beneficial to the maintenance of vitamin C and amino acids. Some experiments have shown that: dried vegetables have only 3% of chlorophyll, vitamins and other nutrients, 17% for dry and dry, 40% for hot air drying, 60%-90% for microwave drying, and microwave sublimation. Drying keeps 97% fresh.
(3) When heating and uniform microwave heating, regardless of the shape of each part of the object, it is generally possible to uniformly infiltrate the microwave to generate heat. Therefore, the uniformity is greatly improved. It can avoid the phenomenon of internal coke and internal dry internal wetness; improve product quality and facilitate the formation of food material quality.
(4) Heating and drying with automatic balance ability Microwave has different effects on materials of different properties, because the absorption of microwave molecules by water molecules is good, so the part with high water content absorbs more microwave power than the bottom part; Medium water has a stronger ability to absorb microwaves than dry matter, so water is heated higher than dry matter, which is beneficial to the rise of water temperature, promotes evaporation of water, and is also conducive to overheating of dry matter, which is extremely beneficial for reducing nutrient and flavor damage. The characteristics of selective heating are: automatic balance absorption of microwaves, avoiding coking during heating and drying of materials.
(5) Energy-saving and high-efficiency microwaves have different effects on different substances. When microwave heating, the objects to be heated are generally placed in a heating chamber made of metal. The heating chamber is a closed cavity for the microwave, and the microwave cannot be leaked; The external heat loss is small, and can only be absorbed by the heated object. The air in the heating chamber and the corresponding container will not generate heat, and there is no additional heat loss, so the thermal efficiency is extremely high; at the same time, the environment in the workplace will not rise, the environment The conditions have improved significantly. Therefore, energy saving and power saving can generally save 30%-50%.
(6) Easy to control, realize automatic production of microwave heating and drying equipment as long as the operation control control knob can instantly achieve the purpose of lifting and stopping.
Because when heating, only the object itself heats up, the air in the furnace body and the furnace has no residual heat, so the thermal inertia is very small, there is no heat loss, and the application of microcomputer control can automatically monitor the product quality, especially suitable for heating process and heating process specification. Automatic control.
(7) Improve working conditions, save floor space, microwave heating equipment, no residual heat, no sample pollution, easy to meet food hygiene requirements, and no heat or radiation, so greatly improve working conditions, and the equipment is compact and saves Plant area.
In summary, the use of microwave heating technology is fast, maintain nutrition and flavor, uniform, disinfection, energy saving, health, safety, pollution-free, efficient, convenient, controllable, small investment, help improve product quality, extend shelf The advantages of improving the labor conditions and realizing production automation are an advanced technology worthy of promotion.
Briefly analyze the principle of microwave heating and drying equipment
Microwave heating technology is a new technology that uses electromagnetic waves to transmit energy to the inside of a heated object and heat up to meet the needs of production. Commonly used microwave frequencies are 915MHz and 2450MHz. Due to its high frequency characteristics, it periodically changes the polar molecules (typically water molecules, proteins, nucleic acids, fats, carbohydrates, etc.) in the material at a surprising rate of billions of times per second. The tendency of directional alignment under the action of microwaves changed its original molecular structure. When the direction of the electric field changes, the polarity of the electric field is also moved at the same speed, which causes the rotation of the molecules, causing frequent collisions between the molecules and generating a large amount of frictional heat, which is expressed in the form of heat in the material, resulting in The material rises rapidly, heats or matures in a short time.