China News Service, September 2 According to reports from foreign media on the 2nd, British scientists have discovered that if a naturally occurring protein is added to ice cream, it can slow down the melting speed of ice cream and it will no longer make the hands sticky.
Scientists from University of Edinburgh and Dandy University in the United Kingdom have discovered that BslA, a naturally occurring protein found in the Japanese food Natto, is added to ice cream to fuse the air, fat, and water in the ice cream and maintain a better balance. A long time is not melted.
The researchers said that this new ingredient will make the ice cream more solid, melt more slowly, and then stay in hot weather for a long time, but also can prevent the formation of grit ice crystals, ensuring a smoother taste.
In addition, the use of BslA helps ice cream coagulation, manufacturers can use less saturated fat during production, will also reduce the need for manufacturers to use low-temperature refrigeration.
Researchers say how often ice cream melts depends on many factors, including the type of ice cream and the weather. They estimate that this "slow-melt" ice cream will be available in three to five years.
Ball valve is evolved from the plug valve, its opening and closing parts as a ball, using the ball to rotate 90 degrees around the axis of the stem to achieve the purpose of opening and closing, the difference is that the cock body is a ball, with a circular through hole or channel through its axis. The ratio of the sphere to the passageway should be such that when the ball is rotated 90 degrees, the inlet and outlet should be completely spherical, thus cutting off the flow.
The role of ball valve in the pipeline is mainly used to cut off, distribute and change the direction of media flow, designed into the V-shaped opening ball valve also has good flow regulation function.
Ball valve is not only simple in structure, good sealing performance, but also in a certain nominal range of small volume, light weight, less material consumption, small installation size, and driving torque is small, easy to operate, easy to realize rapid opening and closing, is one of the fastest developing valve varieties in recent decades. Especially in the United States, Japan, Germany, France, Italy, West, Britain and other industrial developed countries, ball valves are widely used, the variety and number of use is still continuing to expand, and to high temperature, high pressure, large mouth, high sealing, long life, excellent regulatory performance and a valve multifunctional direction, its reliability and other performance indicators have reached a higher level, And has partially replaced Gate Valve, Globe Valve, Regulating Valve.
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