The classification of acidic food and alkaline food is not based on taste. From the perspective of food science, lemon belongs to alkaline food.

Alkaline food contains many metal elements, such as calcium, potassium, sodium, iron, magnesium, zinc and so on. After digestion and metabolism, these foods form basic oxides with cations, which can buffer acidic metabolites. Lemon belongs to alkaline food.

Preservation method of lemon:

1. Generally, intact lemons can be kept for about one month at room temperature. Too low oxygen concentration or too high carbon dioxide concentration in the storage space will increase the decay of lemons and make them go bad.

Lemons can be wrapped in plastic wrap and kept in the refrigerator.

3. The cut lemon can be preserved with honey and sealed. You can take it out and soak it in water when you eat it. You can also marinate lemon slices with white sugar or rock sugar and soak them in water.

Reference to the above content: Baidu Encyclopedia-Lemon