Drying method of bamboo shoots

Abstract

The invention discloses a method for drying bamboo shoots, which comprises the following steps of: cutting bamboo shoot raw materials into roots, peeling, cleaning, splitting and slicing, slightly patting the surfaces of the cut bamboo shoot slices by using a needle plate, cooking at high temperature, bleaching and boiling by using alkaline water after cooking, spreading and cooling after bleaching and boiling, and pre-drying in a heat pump dryer, after drying to a semi-dry state, spraying protective liquid on the surfaces of the bamboo shoot slices; performing three-section type circulating air drying on the bamboo shoot slices with the surfaces sprayed with the protective liquid by using a hot air drying box, strictly controlling three-section type circulating air drying conditions, drying the bamboo shoot slices subjected to secondary drying until the water content is lower than 10%, taking out the bamboo shoot slices, and performing sterilization treatment to obtain finished products of dried bamboo shoots. The drying method of the bamboo shoots is low in drying cost, the prepared dried bamboo shoots are good in rehydration property, as the whole drying process is carried out under the medium-temperature condition, the loss of nutritional ingredients and flavor substances in the dried bamboo shoots is little, and the original nutrition, taste and fragrance of the fresh green bamboo shoots can be reserved to the maximum extent.

Description

technical field [0001] The invention relates to the technical field of bamboo shoot processing, in particular to a method for drying bamboo shoots. Background technique [0002] Bamboo shoots, one of the edible parts of bamboo, are the primary, tender, fat, short and strong young shoots or bud whips of bamboo, also known as bamboo shoots. Bamboo shoots are sweet and slightly cold in nature, bright yellow in color, fat and tender in texture, rich in protein, cellulose, amino acids and other nutrients, have high nutritional value and edible value, can clear away heat and eliminate phlegm, relieve diaphragm and stomach, and benefit thirst At the same time, bamboo shoots also contain a lot of cellulose, which can not only promote intestinal peristalsis, remove food accumulation, and prevent constipation, but also a good food for obese people to lose weight. [0003] However, bamboo shoots are mainly produced in winter and spring, which are often called winter bamboo shoots or s...

AI Technical Summary

Problems solved by technology

[0004] The preparation of dried bamboo shoots is usually made of bamboo shoots, which are dried by shelling and cutting roots, high-temperature cooking, soaking and bleaching in clear water, and drying. The drying methods mainly include sun-drying, sulfur smoking, and charcoal drying. The traditional folk drying method is usually sun-dried, that is, the bamboo shoots are shelled, cut and rooted, cooked at high temperature, soaked in clean water, and then directly exposed to the sun. The drying cycle is long and the efficiency is relatively low. Thorough situation

Based on the above situation, there are also dried bamboo shoots obtained by sulfur fumigation or charcoal fire drying, but the dried bamboo shoots smoked by sulfur are harmful to the human body; the dried bamboo shoots obtained by the drying method have a serious loss of nutrients, and at the same time, the surface will be more contaminated. The pollutants in the bamboo shoots are not only dark in color, hard in texture, but also poor in rehydration and difficult to taste. At the same time, the taste is not as good as that of sun-dried bamboo shoots, and the loss of nutrients in dried bamboo shoots after high temperature drying is also very serious.

In addition, there are also some dried bamboo shoots made by freeze-drying on the market, but the price of dried bamboo shoots made by freeze-drying is several times higher than that made by traditional drying methods, so it is suitable for narrow face

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