After processing, bamboo shoots retain a large number of fresh and tender shells, which is an important undeveloped resource. At present, it is widely used to be buried underground or abandoned near floodplains and ditches, which not only causes environmental pollution, but also wastes resources. The treatment of bamboo shoot shells has become a "bottleneck" that puzzles the further development of the industry. At present, the research status of fresh bamboo shoot shells mainly includes the following points:
1, used as animal feed
The method of using fresh bamboo shoot shells as animal feed mainly includes:
The water content of fresh bamboo shoots directly dried and crushed is about 86%, which is easy to rot and deteriorate. Therefore, processing and drying are a key issue. In order not to make the treatment cost too high, fresh bamboo shoots can only be dried in the sun. However, the time of bamboo shoots is rainy season, so it is often difficult to dry them in time, and some antiseptic treatment is needed. Zhejiang Forestry College has done some experiments on the antiseptic treatment of fresh bamboo shoots, and found that adding a small amount of quicklime to fresh bamboo shoots can prolong the shelf life of fresh bamboo shoots, which is conducive to choosing sunny days to dry. The processing method of drying fresh bamboo shoot shells is to roll the fresh bamboo shoot shells into 2-3 cm long pieces with a rolling machine, which is beneficial to drying and crushing. Dry the crushed fresh bamboo shoots and add a little quicklime to prevent rainy days. Generally crushed fresh bamboo shoots can be dried in 2-3 sunny days. The sun-dried bamboo shell is crushed to make bamboo shell powder. Bamboo shoot shell powder can be used as ingredients of compound feed. Fresh bamboo shoot shells can also be dried by sun drying and sun drying. First, the broken fresh bamboo shoots are dried to semi-dry, and then dried by drying equipment. This will slightly increase the processing cost. The absorption rate of fresh bamboo shoots directly dried and crushed by microbial fermentation may be low. In order to make full use of the nutritional components of fresh bamboo shoots, microbial fermentation is more effective. Select suitable strains according to the nutritional components of fresh bamboo shoots. Fresh bamboo shoot shells fermented by microorganisms do not need to be dried, and can be directly mixed into livestock and poultry diets. This work is worth testing, and the cost of microbial fermentation treatment of fresh bamboo shoot shells is very low.
Step 2 make paper
Mature bamboo shell is a good raw material for papermaking. The fiber length is generally 1500-2000 microns and the width is 10 micron. After soft-rolling dust removal, old bamboo shoot shells can not only produce ordinary writing paper and candy paper, but also be used as mixed pulp to produce advanced printing paper and cigarette paper.
Step 3 Cultivate edible fungi
After the bamboo shoot shell is crushed and dehydrated, it is mixed with lime whose pH value is adjusted, and put into an edible fungus bag to realize the environmental protection, ecology and sustainable pollution-free treatment of the bamboo shoot shell. Farmers in Lin 'an County have successfully cultivated high-grade edible fungus Dictyophora with bamboo shoot shells.