1. The new method of chemical preservation of Pleurotus ostreatus removes impurities from fresh mushroom and spreads it on a clean mulch. Made of a certain concentration of chemical preservatives (0.3% of calcium propionate, 0.1% of potassium sorbate, and 0.25% of sodium sulfite). Spray evenly on the front and back of Pleurotus ostreatus using a sprayer, and then place it in a fully closed plastic bag. Stored in a clean and sanitary place, the preservation period can be about 26 days.
2. Fresh-keeping of shiitake mushrooms Choose fresh shiitake mushrooms and use hot-air drying or sun drying to reduce the water content of the mushrooms to about 75%, and then remove the impurities from the base of the mushroom stems. In the cold store, the shiitake mushroom treated in the above-mentioned manner is put into a special plastic bag and vacuum-packed to make the mushroom body under low oxygen and high carbon dioxide, with an appropriate storage temperature of 0 33° C., to delay the respiration and physiological changes. Effectively extend the shelf life of mushrooms, maintain good quality and meet market sales needs.
3. The new method of quick-frozen and fresh-keeping of straw mushroom will remove the impurities from the base of the oval-shaped straw mushroom fruit body and put it into a plastic box. The stone will be added into the box and the water will be immersed in the mushroom surface. And then stored at low temperature (-20 ~ -22 °C), can be preserved for about 70 days, taste, color, total amino acids and other indicators are better.
4. Flammulina Mushrooms Sodium metabisulfite Preservation Method After the harvested Flammulina velutipes are rinsed, soak for 10-20 minutes with 0.1%-0.25% sodium metabisulfite, remove and drain, and seal them with plastic bags. It can be stored for 6 to 10 days at room temperature and still maintain its original flavor and color.
Integrated Roughness Profilometer
Roughness Profilometer, also known as surface roughness meter, surface smoothness meter, surface roughness tester, roughness measurement meter, roughness tester, and other names. It has the characteristics of high measurement accuracy, wide measurement range, easy operation, portability, and stable operation. It can be widely used for the detection of various metal and non-metal processing surfaces. This instrument is a pocket instrument that integrates sensors and hosts, with handheld characteristics, making it more suitable for use in production sites. The exterior design is sturdy and durable, with significant resistance to electromagnetic interference, in line with current design trends.
The application fields of roughness meters include:
1. Mechanical processing and manufacturing industry, mainly metal processing and manufacturing. Roughness meters were originally developed to detect the surface roughness of machined parts. Especially, stylus type roughness measuring instruments are more suitable for detecting hard metal surfaces. For example, the automotive parts processing and manufacturing industry, the mechanical parts processing and manufacturing industry, and so on. As long as these processing and manufacturing industries involve the surface quality of workpieces, the detection application of roughness meters is essential.
2. In the non-metallic processing and manufacturing industry, with the progress and development of technology, more and more new materials are applied to processing processes, such as ceramics, plastics, polyethylene, etc. Some bearings are now made of special ceramic materials, and pump valves are made of polyethylene materials. These materials have a hard texture, and some applications can replace metal materials to make workpieces. During production and processing, their surface roughness also needs to be tested.
3. With the continuous strengthening and improvement of the technology and functions of roughness meters, as well as their in-depth promotion and application, more and more industries have been found to require roughness detection. In addition to mechanical processing and manufacturing, roughness evaluation is also required in the production and processing of power, communication, electronics, such as couplings on switches, integrated circuit semiconductors, and even stationery, tableware, and other products used in people's daily lives The surface roughness of human teeth needs to be tested.
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