Application of microwave sterilization equipment in culture medium

As a traditional non-staple food, edible fungi play an important role in the three major human food sources (plant food, animal food, fungus food). Fungi foods are characterized by rich nutrition and high bio-efficiency. In Henan Province, the output value of edible fungi production is second only to grain, cotton, oil, fruit and vegetables, and it is ranked 6th, becoming an advantageous industry for export earning. With the improvement of people's living standards and the improvement of the deep processing technology of edible fungi, their market demand will continue to grow. However, the current output of edible fungi is low and severely low, which seriously affects the economic benefits of edible fungi. For the current problems, the main reason for a zui is that the sterilization period of the original medium is too long. Conventional high-pressure steam sterilization, under the condition of 121 ° C, needs to be maintained for more than 2 hours to achieve the sterilization effect. The sterilization test was carried out on the medium for the production of edible fungi by microwave, and the results showed that a good sterilization effect can be achieved in a short time.

Introduction of microwave edible fungus culture sterilizer: Microwave energy can be used to sterilize the edible fungus bagged medium to replace the traditional high pressure moist heat sterilization process. Find out the influence of microwave power, microwave action time and the change of medium and microwave distance on its bactericidal effect, which provides a basis for the development and application of microwave technology in the production of edible fungi.

Characteristics of Microwave Sterilization and Preservation 1. Short time and high speed Conventional thermal sterilization is to transfer heat from the surface of the food to the inside through heat conduction, convection or radiation. It takes a long time to reach the sterilization temperature. Microwave sterilization is a direct interaction between microwave energy and microorganisms such as food and bacteria. The thermal effect and non-thermal effect work together to achieve rapid heating and sterilization, and the treatment time is greatly shortened. The sterilization effect of various materials is generally 3-5 minutes.

2, low temperature sterilization to maintain nutrients and traditional flavor microwave sterilization is through special thermal and non-thermal effect sterilization, compared with conventional thermal sterilization, can achieve the desired disinfection effect at a lower temperature and a shorter time. Practice has shown that the general sterilization temperature can achieve the effect at 75-80 ° C. In addition, the microwave treatment food can retain more nutrients and color, fragrance, taste, shape and other flavors, and has a puffing effect. For example, conventionally heat treated vegetables retain 46-50% of vitamin C, while microwave treatment is 60-90%. Conventional heated pig liver vitamin A is maintained at 58%, while microwave heating is 84%.

3, energy conservation Conventional thermal sterilization often has heat loss in the environment and equipment, and microwave is directly treated on food, so there is no additional heat loss. In addition, its conversion efficiency of electric energy to microwave energy is 70-80%, compared with 30-50% of electricity.

4. Uniform and thorough conventional thermal sterilization starts from the surface of the material and is then transmitted to the interior through heat conduction. There is an internal and external temperature difference. In order to maintain the flavor of the food and shorten the processing time, the inside of the food does not reach a sufficient temperature to affect the sterilization effect. Since the microwave has a penetrating effect, when the food is processed as a whole, both the surface and the inside are simultaneously acted upon, so the sterilization is uniform and thorough.

5, easy to control microwave food sterilization treatment, the equipment can be used immediately, without the thermal inertia of conventional thermal sterilization, flexible and convenient operation, microwave power can be continuously adjusted from zero to rated power, transmission speed is continuously adjusted from zero, easy to control .

6. Simple equipment, advanced technology Compared with conventional disinfection and sterilization, microwave sterilization equipment does not require boilers, complicated pipeline systems, coal yards and transportation vehicles, as long as it has basic conditions of water and electricity.

7. Improve the working conditions and save only 2-3 operators for the entire set of microwave equipment. Widely used in fungus, ginseng, flowers, onion ginger and garlic slices. The heating, drying and sterilization of jujube tablets, peppers, dehydrated vegetables, soy products, etc., through microwave sterilization and preservation technology, will not damage the original nutrients of the materials, the health indicators can be completely lower than the national food hygiene standards, completely It can reach the export-grade standard of food and greatly extend the shelf life of food. Microwave equipment has a low working environment temperature and low noise, which greatly improves working conditions.

Viral Transportation Medium Tube

Uses: used for the detection and sampling of influenza, hand, mouth, foot and other epidemic diseases
Inspection principle:
The combination of multiple antibiotics has broad-spectrum antibacterial and antifungal effects;
As a protein stabilizer, bovine serum albumin can increase the survival time and infection stability of the virus;
Buffers such as Hank's build a neutral environment, which helps to increase the survival time and infection stability of the virus;
Phenol red is an acid-base indicator, the discoloration area is 6.6 (yellow)~8.0 (red), and it is red at 7.2~7.4.
Steps:
1. According to the sampling requirements, use a sampling swab to collect samples.
2. Place the swab after collecting the sample into a sterile sampling tube.
3. Break the sampling swab rod that is higher than the sterile sampling tube.
4. Tighten the cap of the sterile sampling tube.
5. Label the sterile sampling tube with information as required.

For sample collection, transportation and storage.
Product advantages:
1. The virus discretion of the flocking swab is high to ensure the accuracy of the test results.
2. The samples are well sealed to ensure product transportation and safe storage.
3. Product instruction manual, product certificate
Product Details:
1. The product set includes a one-time Virus Sampling Tube (including preservation solution), a self-sealing bag, a sampling swab, and instructions.
2. Product specification: 100 sets/box, 8 boxes/box 3. Product weight: 0. 65kg/box, 13. 2kg/box
4. Packing size: 25. 5*23. 5*14. 5 boxes, 53*49*32/carton
Scope of application:
Work resumption testing, the best choice for large-scale population screening
Features:
1. Transport at room temperature, stably preserve viral RNA
2. Pre-packaged guanidine salt lysate can inactivate the new coronavirus, ensuring the safety of transportation and testing personnel 3. The large-capacity preservation solution can fully soak the swab head,
The sample size can be divided into three parts for testing and reserve samples respectively to meet the testing needs.
Scope of application:
Suspected cases, disease control testing, preferred by P3 laboratory

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Jilin Sinoscience Technology Co. LTD , https://www.jlgkscience.com