echemi logo
Product
  • Product
  • Supplier
  • Inquiry
    Home > Active Ingredient News > Drugs Articles > The application of microwave sterilization equipment in bacteria culture medium

    The application of microwave sterilization equipment in bacteria culture medium

    • Last Update: 2014-08-01
    • Source: Internet
    • Author: User
    Search more information of high quality chemicals, good prices and reliable suppliers, visit www.echemi.com
    As a traditional non-staple food, edible fungus plays an important role in the three major food sources (plant food, animal food, fungus food) Fungus food has the characteristics of rich nutrition and high biological efficiency In Henan Province, the output value of mushroom production is second only to grain, cotton, oil, fruit, vegetable, which is in the sixth place It has become an advantageous industry for export and foreign exchange With the improvement of people's living standards and the improvement of the deep processing technology of edible fungi, the market demand will continue to grow However, at present, the yield of edible fungi is very low, which seriously affects the economic benefits of edible fungi In view of the current problems, one of the main reasons for Zui is that the sterilization cycle of the original medium is too long Under the condition of 121 ℃, the traditional high-pressure steam sterilization needs to be maintained for more than 2 hours to achieve the sterilization effect Using microwave to sterilize the culture medium for mushroom production, the results showed that good sterilization effect could be achieved in a very short time Introduction of microwave sterilizer for edible fungus culture medium: microwave can be used for sterilization test of edible fungus bag culture medium to replace the traditional high-pressure moist heat sterilization process To find out the influence of microwave power, microwave action time and the distance between the culture medium and microwave source on its germicidal efficacy, and to provide a basis for the development and application of microwave technology in the production of edible fungi The characteristics of microwave sterilization are as follows: 1 The time is short and the speed is fast Conventional thermal sterilization transmits heat from the surface of food to the interior through heat conduction, convection or radiation It often takes a long time to reach the sterilization temperature Microwave sterilization is a direct interaction between microwave and food, bacteria and other microorganisms The thermal effect and non thermal effect work together to achieve rapid temperature rise sterilization The processing time is greatly shortened The sterilization effect of various materials is generally in 3-5 minutes 2 Low temperature sterilization keeps nutrition and traditional flavor Microwave sterilization can achieve the required sterilization effect in a relatively low temperature and a relatively short time compared with conventional thermal sterilization The practice shows that the general sterilization temperature is 75-80 ℃, in addition, the microwave food can retain more nutrients and flavor such as color, fragrance, taste, shape, etc., and has expansion effect For example, 46-50% of vitamin C was retained in vegetables treated by conventional heat, 60-90% by microwave, 58% by conventional heating, and 84% by microwave heating 3 Energy saving conventional thermal sterilization often has heat loss in the environment and equipment, while microwave directly processes food, so there is no additional heat loss In addition, the conversion efficiency from electric energy to microwave energy is 70-80%, which can save 30-50% power compared with square 4 Uniform and thorough conventional thermal sterilization starts from the surface of the material, and then is transmitted to the interior through heat conduction There is an internal and external temperature difference In order to maintain the flavor of food and shorten the processing time, often the internal temperature of food does not reach enough to affect the sterilization effect Because microwave has the function of penetration, when the food is treated as a whole, both the surface and the interior are affected at the same time, so the sterilization is even and thorough 5 It is easy to control the sterilization of microwave food The equipment can be used immediately without the thermal inertia of conventional thermal sterilization The operation is flexible and convenient The microwave power can be continuously adjustable from zero to the rated power, and the transmission speed can be continuously adjusted from zero for easy control 6 The equipment is simple and the technology is advanced Compared with conventional sterilization, microwave sterilization equipment does not need boilers, complex pipeline systems, coal yards and transport vehicles, as long as it has basic conditions of water and electricity 7 Improve labor conditions and save 2-3 operators of the whole set of microwave equipment It is widely used in Auricularia, ginseng, flowers, scallion, ginger and garlic Through microwave sterilization and fresh-keeping technology, the heating, drying and sterilization of jujube slices, capsicum, dehydrated vegetables, bean products and other products will not damage the original nutritional components of the materials, and the health indicators can be completely lower than the national food health standards, which can completely reach the export level standards of food, and greatly extend the shelf life of food The working environment of microwave equipment is low in temperature and low in noise, which greatly improves the working conditions.
    This article is an English version of an article which is originally in the Chinese language on echemi.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to service@echemi.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

    Contact Us

    The source of this page with content of products and services is from Internet, which doesn't represent ECHEMI's opinion. If you have any queries, please write to service@echemi.com. It will be replied within 5 days.

    Moreover, if you find any instances of plagiarism from the page, please send email to service@echemi.com with relevant evidence.