The reasons why broccoli turns yellow are as follows:

The yellowing of broccoli is caused by long-term storage in a dry place. At the same time, because of long-term storage, broccoli will not be exposed to sunlight, and some chlorophyll will not be produced, so it will turn yellow.

Because we store broccoli for a long time, it doesn't get enough light, so it will contain less and less chlorophyll. Then everyone will understand that yellow broccoli is definitely not fresh, and at the same time, various nutrients such as vitamins will be reduced.

If broccoli is only stored for a short time or refrigerated, it will be relatively better. Although the ambient temperature in cold storage is low, it will not affect the nutrients in broccoli.

If you want to keep it for a long time, you can keep it in the freezer. However, although the freezer will be kept for a relatively long time, the nutrients in broccoli will be lost because of the low ambient temperature and long storage time.

What are the common varieties of broccoli?

1, showing green broccoli.

This is a new broccoli variety with early maturity in spring and autumn. The main flower ball and the side flower ball can be harvested at the same time. The plant is erect, compact in plant type, strong in growth potential, resistant to virus disease and black rot. The main flower ball weighs more than 500 grams, with delicate and neat buds and green stems, which is especially suitable for quick-frozen export. The yield of spring seeds is high and the economic benefits are obvious.

2. Bless broccoli.

Fuzhi broccoli is a moderately mature variety, which is harvested about 75 days after planting. The bud is thin in the middle, dark green in ball color, neat in ball bud, weighing about 400 grams, with few side branches, and the stem is not easy to be hollow and yellow after harvesting. The cultivation adaptability is wide, and it can be cultivated in cold regions and cold regions in summer and autumn.

The suitable temperature for autumn sowing in southern China is about 18℃-28℃, and excellent round buds with excellent commercialization can also be obtained. Strong resistance to black rot, downy mildew and soft rot.