Soybeans also have a shelf life, usually 2-3 years, and they have been bought for almost 2 years. As long as it is well preserved and has no mildew and deterioration, it can still be eaten. After drying in the sun, soybeans have little water and can be preserved for a long time.

Dry soybeans are packed in clean, waterless plastic cans and stored in a dry, cool and ventilated place. They can be spread out every month or two and exposed to the sun, which can prevent soybeans from getting insects.

Extended data:

Soybean contains plant protein and is known as "vegetable meat". If the human body lacks protein, it will have the symptoms of decreased immunity and fatigue. Eating soy protein supplements can avoid the problem of rising cholesterol in meat.

Soybean is rich in soybean lecithin, which is one of the important components of the brain. Eating more soybeans can help prevent Alzheimer's disease. In addition, sterols in soybean lecithin can increase nerve function and vitality.

Protein in soybean can increase the excitement and inhibition function of cerebral cortex, improve the efficiency of study and work, and help to relieve depression.

People's Daily Online-Health-preserving effects of regular consumption of soybeans: anti-fatigue and immunity enhancement.