What affects the effectiveness of the use of microwave ovens

What affects the effectiveness of the use of microwave ovens? microwave oven has become our daily lives in electrical appliances, many consumer reaction is also heated by microwave ovens, but there is food effect is good, and some food, then there will be loss of moisture, so in actual use, affect the efficacy of microwave oven cooking, what are the main factors? author to discuss: (1) initial temperature. The higher the initial temperature of food, cooking time is shorter, frozen food, cooking, you should not be thawed directly before cooking.

(2) the size of the food. Food for larger, longer cooking time, because there can be food on the microwave absorption, the microwave field in the to food from internal penetration, with distance to the internal surface of the exponential decay, closer to the center of the food, the more weak microwave field, it can be absorbed into the microwave. When food is more than the thickness of 5 ~ 8cra, its Centre will be heating food surface heat to finish cooking. So in the microwave oven cooking, food should not be too heavy, too big.

(3) food shapes. Shape the food in the microwave rules content easy and uniform heating; if an irregularly-shaped, thin, narrow parts easily too. Therefore, when using a microwave oven cooking, food, size and thickness should not be excessive.

(4) the amount of food. The greater the quantity of food and cooking. But each has a microwave oven, the best cooking. In the actual cooking, as far as possible, in accordance with the set volume to arrange the cooking of food, to save time and energy.
(5) food of dielectric properties. Food of dielectric properties affect the absorption of food in the microwave, moisture much food permittivity, microwave energy absorbed by the water more easily.

(6) the density of the food. Density of the food and the cooking time is long.

(7) the specific heat of food. Specific heat of small food temperature rise rapidly, the cooking time is short.

In order for the microwave heating effect is good, it is necessary to pay attention to the operation of the above points!


Iron hot pick a look at the second hearing benefits using an iron, but is not suitable for cooking skillet acidic food cooking can iron from iron material, mainly divided into fine iron and cast iron pot. Cast iron pot it is raw iron. Skillet cooked food during stripping an inorganic iron, easily absorbed and utilized, and often use the skillet for cooking food, contribute to the prevention and treatment of iron deficiency anemia, so I've got a lot of people choose to use the traditional Pan pot.

　　Fine cast iron skillet possibilities how to distinguish between students and refined iron? is it legal to human health? said Miss Liao, iron is the selection of the ash iron melting model casting, heat transfer, heat evenly, but the pot ring engraving thick, rough and cracked; refined iron is made of black metal forging or hand-hammered into thin rings with a pot, heat quickly, great features. Journalists in a number of shopping malls, supermarkets, health iron price is cheaper, the container is only a raw iron 34CM, price $ 16. Press and telephone links to the King of cooking utensils co., Ltd. Zhejiang cooking, the company's Marketing Department to Miss told reporters that "raw iron also has a characteristic, when the temperature exceeds 200 ℃, disseminate students an iron will, through a thermal energy is delivered to the food temperature control in 230 ° c, while the fine iron is the temperature directly to food. For most families, it is recommended to use cast iron pot. "But she also stresses the advantages of pure iron, first, because it is made of pure iron, impurities, therefore, the comparison is not uniform heat transfer, prone to stick pot. Second, due to the use of materials, the pot can be very thin, hot temperatures can reach higher. Third, the scale is high, the surface is smooth, clean work well done.

　　Buy iron trick either raw or refined iron skillet, how to choose an iron? love Homestead kitchen salesmen revealed to reporters a few tips: a look at the "look", the pots are surface is smooth, but does not require the "smooth as glass", because of the casting, iron has an irregular superficial veins. There is a defect, the general part of the small hill is iron, on the quality of the pot, but pits on the pot of quality against larger, pay attention to the time of purchase. Second, "listening to" uneven pot is not good, can be purchased at the bottom of the sky, fingers resist pot concave Centre, with a hard object percussion. Pot of sound louder, more people feel vibrations, the better. In addition, the sales staff pointed out that the pot has a rust-not necessarily the quality is not good, there is a deposited rust pot description of a long time, but the longer the deposit to the pot, the better, so that the internal organization of the pot can be more stable, not easy to crack at the beginning of time.