Why do dried bamboo shoots turn black?

Because of the dehydration process, the weather and technology during drying, it will turn black if it is not dried in a short time; According to the determination of Nanjing Institute of Forest Products and Chemical Industry, the nutritional components of dried bamboo shoots contain 2-4% sugar, 0.2-0.3% fat and 2.5-3% protein, and contain cystine, glutamic acid and other 18 amino acids and vitamins, as well as nutrients needed by human body such as phosphorus and calcium.

Extended data

nutritional ingredient

Dried bamboo shoots not only assist famous dishes, but also have considerable nutritional and medicinal value. Bamboo shoots are rich in protein, amino acids, fats, sugars, calcium, phosphorus, iron, carotene and vitamins B 1, B2 and C.

Every100g of fresh bamboo shoots contains 9.79g of dry matter, 3.28g of protein, 4.47g of carbohydrate, 0.9g of cellulose, 0. 1 3g of fat, 22mg of calcium, 56mg of phosphorus and 0.1mg of iron, and the contents of vitamins and carotene are more than twice that of Chinese cabbage.

Moreover, the protein of bamboo shoots is superior, including lysine, tryptophan, threonine and phenylalanine, glutamic acid which plays an important role in protein metabolism, and cystine which can maintain the protein configuration. It is an excellent healthy vegetable.

diversification

It can be divided into dried red shell bamboo shoots, dried thunder bamboo shoots, dried early bamboo shoots, dried stalagmites, dried bamboo shoots and so on, and there are many kinds.

Dried bamboo shoots are deeply loved by diners because of their rich nutrition and delicious taste. The main producing area is Tianxin Village, Xiacun Village, Yanling County, Hunan Province. Its main characteristics are fresh, tender, crisp and refreshing.

Dried Phyllostachys praecox is made from Phyllostachys praecox. The main producing area is Lin 'an, Zhejiang, and its main feature is fragrance. Because Phyllostachys praecox is the earliest local bamboo shoot, the price of fresh bamboo shoots is relatively high, so it is rarely used to make dried bamboo shoots. Only when fresh Lei bamboo shoots are about to go on the market, some of them are made into dried bamboo shoots, but compared with other kinds of bamboo shoots, they are still relatively early.

Dry early bamboo shoots are made of early bamboo shoots, and the main producing area is Lin 'an, Zhejiang. Its main characteristics are thick bamboo shoots, relatively high yield, and the green color of properly processed dried early bamboo shoots. Although most of the early bamboo shoots are planted artificially, the growth environment is basically close to the wild, so the quality of dried bamboo shoots is very good, and many vendors pretend to sell dried bamboo shoots.

Dried stalagmites are made from stalagmites and mainly produced in Lin 'an, Zhejiang. It is named after growing on a thin stone wall. Stalagmite is difficult to grow and its yield is low.

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