В термосе можно хранить кофе, но следует уделить внимание выбору материала и контролю времени, следующее:
1. Material and Chemical Reaction
Изолированная чашка из нержавеющей стали: Он может хранить кофе в краткосрочной перспективе (2-4 часы), но следует избегать длительного хранения. Tannic acid in coffee may corrode stainless steel liners, leading to the precipitation of metal elements (such as chromium and nickel), which may affect health after long-term use.
Ceramic/glass lined insulated cup: безопаснее, less likely to react with coffee ingredients, подходит для длительного использования.
2. The influence of time and temperature
Hot coffee: It is recommended to drink it within 4 часы. Превышение 4 hours may lead to an increase in coffee acidity, and the stainless steel liner may release harmful substances.
Cold brewed coffee/iced coffee: Due to low temperature inhibition of oxidation, the flavor is more stable, and the storage time can be appropriately extended, but it still needs to be consumed on the same day.
Milk containing coffee (such as latte): Due to the perishable nature of dairy products, it should be consumed within 1-2 часы.
3. Safety hazards
Gas pressure issue: Hot coffee in a sealed insulated cup may generate high pressure due to temperature changes, posing a risk of splashing or explosion when opening the lid.
Fermentation additives: If fermented substances such as goji berries and red dates are added to coffee, they may produce gases that increase pressure and exacerbate the danger.
4. Cleaning and maintenance suggestions
Timely cleaning: Coffee residues can easily breed bacteria and leave off odors. It is recommended to immediately clean with a neutral detergent after use to avoid dirt accumulation.
Special insulated cup: If you frequently serve coffee, it is recommended to use ceramic inner insulated cups or stainless steel coffee cups designed specifically for coffee to reduce material impact.
5. Краткое содержание
Short term use of stainless steel insulated cups for coffee is feasible, but strict time control is required and non-metallic inner container should be prioritized. If pursuing safety and flavor, it is recommended to use glass insulated cups or coffee specific cups, and follow the principle of “ready to drink”.
