Why can't the thermos cup soak Chinese wolfberry and red dates?

Brewing medlar and jujube in a thermos cup is easy to breed bacteria.

The reason why medlar and jujube can't be soaked in a thermos cup is that the water temperature in the thermos cup is always kept at 60-70 degrees Celsius. Soaking traditional Chinese medicine at high temperature for a long time will breed bacteria, deteriorate and bury potential safety hazards. Lycium barbarum contains polysaccharide and starch, which is easy to swell after soaking at high temperature, and the effective components are not easy to dissolve out.

If a thermos cup is used during brewing, jujube and medlar will always be in a state of high temperature and constant temperature, just like boiling with warm fire, then the vitamins and nutrients in them will be destroyed, not only the nutritional value will be reduced, but also the harmful substances in them will increase, which will endanger human health if they are drunk for a long time.

1, vacuum insulation with tail

Vacuum insulation with tail is simply the vacuum technology used in traditional vacuum cups. This kind of thermos cup is made of inner and outer double-layer glass or stainless steel, and the middle is vacuumized to isolate the temperature transfer efficiency of hot water.

Imagine that this kind of thermos cup has an exhaust tail at the bottom, which is easy to be collided and even cause air leakage in daily use, but correspondingly, the price will be much more favorable.

2. Tailless vacuum insulation

Tailless vacuum appears to improve tailless vacuum. Tailless vacuum insulation is an advanced technology at present, which can make the insulation process of vacuum cup be completed by computer in vacuum environment, such as vacuumizing, sealing and cooling.

The tailless thermos has no exhaust tail left by the thermos with tail, which avoids the damage and air leakage caused by collision. However, in the domestic thermos cup market, there are few such tailless vacuum thermos cups, and the corresponding price will be higher.