Microwave liquid sterilization and Aging of wine
The application of microwave technology to provide enforcement for industrial added a new heating method, this heating method in industry, agriculture , chemical, medical , etc. have been widely used. First, the use of its thermal effect, mainly used in food , medicine, agricultural & sideline products , wood, cardboard , chemical and other heating and drying . Second is the use of their biological effects , food , medicine, agricultural & sideline products such as low-temperature sterilization , mold preservation, liquor reminder Chen , Aging, suspend fermentation, breeding . As today's high-tech microwave heating , the production has moved from the laboratory to the practical stage , the prospects are very broad.
First, the microwave heating and drying , sterilization mechanism
Microwave frequencies from 300MHz ~ 300GMHz are electromagnetic waves , the direction and size of the periodically changing . Microwave and materials directly , ultra high frequency electromagnetic wave is converted into heat in the process of microwave heating process . Water is a strong microwave absorbing materials , materials in the water molecules are polar molecules under microwave irradiation , the external electromagnetic field with the polarity orientation changes , 2450MHz microwave motion that the water molecules 245 million times per second , resulting in rapid molecular friction , collisions, so that the material produces heating and puffing and a series of processes to achieve the microwave heating purposes.
Microwave thermal effects of microwave sterilization and the result of biological effects . Microwave thermal effects of bacterial protein denaturation , so that bacteria lose nutrition, reproduction and survival conditions and death; biological effects of microwave electric field to change the membrane cross-section potential distribution around the cell density of electrons and ions , thereby changing the permeability of the cell membrane bacteria so malnourished , not the normal metabolism, bacterial structure and function disorders , growth inhibition and death.
In addition , the decision bacterial growth and stable inheritance of the normal reproduction of the nucleic acid (RNA) and deoxyribonucleic acid (DNA), are tightly connected together by a number of hydrogen molecules curl shape . Sufficiently strong microwave field can lead to hydrogen bond relaxation , fracture and restructuring , and induce genetic mutations or chromosomal aberrations , or even rupture.
Second, the microwave heating drying, sterilization characteristics
1, the heat quickly and evenly
2 , energy efficient
3 , low temperature sterilization preservation mildew
4 , advanced technology, computer control can be realized
5 , do not pollute the environment safe and sound
6, the device footprint, reduce labor intensity
Fourth, the microwave range of applications:
Microwave liquid sterilizing machine is mainly used in a variety of drinks , milk, juices , nutritional supplements , herbs, spices and other liquid continuous sterilization ; applied to wine mature and aging acceleration process . The microwave treatment of liquid food fully meet the requirements of national health indicators and inspection department .
Variety of wine in the brewing process, must be stored in a specific period of time under the conditions , the longer the wine taste especially good, the so-called "Wine gets better ." However, this method of improving product quality and require large funds to build libraries or large wine cellar ; but also in the process of alcohol stored for many years due to evaporation and reduce losses increase ; liquidity occupancy increase , slow turnover , economic not to mention high . Currently some areas "public wine", " bootlegger " generally do not have the storage period . Although this saves money , but the quality of the wine is not good, the new wine bursts spicy flavor, savor come off evil and impurities . In order to solve the above problem, people study accelerated aging acceleration technologies. China is now added the use of nuclear radiation , infrared , solar energy , high-frequency electromagnetic energy , laser energy, microwave energy and other new technologies to handle new wine, so acceleration mature aging process , with varying degrees of progress , and the most widely used , most reliable , the most obvious effect is that old familiar urge Chen microwave energy technologies.
The mechanism of microwave mature wine :
Microwave mature ( Aging ) wine is the main mechanism: the use of microwave , wine chemical reactions and thermal effects. Liquor is composed of water , ethanol, and some other trace components, which , because activity greater freedom ethanol molecules the existence of the spicy flavor of wine becomes large . The microwave treatment, under the effect of the microwave field , the wine of water molecules and ethanol molecules rearrange , more neatly , ethanol molecules bound by water molecules , activity has decreased , making the wine taste spicy and violence greatly alleviate , this process is much faster than natural mature .
Ethanol and water molecules are polar molecules , the action of the microwave field , the polar molecules rapidly cycle the electric field rotation, rotation number of million times / second, to promote the process of natural mature slowly and redox esterification increased , the chemical reaction speed , increase the aldehyde ester decreased .
Microwave mature ( Aging ) Wine characteristics:
A microwave -treated wine, which tastes significantly improved. After 1-2 minutes of microwave irradiation , we can eliminate the new wine spicy flavor, reduces miscellaneous taste , the wine soft and refreshing, alcohol and GAN , you can achieve natural mature wine storage storage method requires 3-6 months results ( National Tasting Committee identified ) .
2, low mass times the liquor, after microwave treatment better get rid of most of the evil savor , the effect is more obvious.
3, with the microwave on low liquor processing, both to improve wine quality , but also sterilization.
4 , if the treated liquor then stored 1-3 months better.
5 , microwave reminders Chen technology process is simple, stable , easy to operate, can be fully automatic control.
6 , microwave technology not only improves reminder Chen quality of the wine , but more important is to shorten the production cycle , improve production efficiency and greatly improve economic efficiency.