1. Shell the green beans, put them in fresh-keeping bags, and put them in the refrigerator without touching water.

2. Blanch the green beans with boiling water until they are cooked, shower with cold water, drain the water, and then put them in the freezer for freezing.

3. Peel off the pods at the early stage of green beans, collect the seeds, dry them slightly, and then put them into fresh-keeping bags; Nitrogen is introduced to make the plastic wrap anoxic and inhibit breathing; Transfer the plastic wrap to the freezer and store it at 1℃ ~ 5℃ for a long time, which can keep fresh for half a year.

Extended data

Studies have shown that green beans are rich in various antioxidant components and can also eliminate inflammation. Mung bean can provide catechin and epicatechin, two flavonoid antioxidants, for human body. These two substances can effectively eliminate free radicals in the body, prevent diseases caused by free radicals, delay the aging speed of the body, and have anti-inflammatory and broad-spectrum antibacterial effects. Mung beans also contain two carotenoids: α -carotene and β -carotene

In addition to protein and fiber, green beans are also one of the main sources of vitamin A, vitamin C, vitamin K and vitamin B.. Green beans can also provide a small amount of calcium, phosphorus, potassium, iron, zinc, thiamine and riboflavin.

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