Method for retaining freshness of fresh cocoons

Abstract

The invention provides a method for retaining freshness of fresh cocoons and relates to a preservation method. The method comprises the following steps: placing inactivated fresh cocoons into a tent with six sealed surfaces; removing oxygen-enriched air from the tent; introducing carbon dioxide; and circularly air-drying, wherein water in a recycling gas channel is absorbed by a drying agent, the temperature in the tent is adjusted to be 10 to 25 DEG C, the fresh cocoons in the tent is circularly dried and the water of pupae in the circularly dried fresh cocoons is reduced to 15 percent. The invention researches and develops a new method for retaining freshness of the fresh cocoons, so that a fresh cocoon silk reeling process can be performed successfully and the problems of high energy consumption and atmospheric pollution in the traditional cocoon drying process. The device, the drying agent and the carbon dioxide adopted by the method are low in cost and pollution-free; the carbon dioxide is recycled, so the cost is saved greatly; a preservative is not added in the whole process, so guarantee is brought for the pupa processing, the silk quality is not changed and silk reeling is promoted.

Description

technical field [0001] The invention relates to a fresh-keeping method, in particular to a fresh-keeping method for fresh cocoons. Background technique [0002] For a long time, the silkworm cocoon silk industry has followed the process route of silkworm breeding, fresh cocoon harvesting and drying, cocoon selection, cocoon peeling, cocoon mixing, cocoon cooking, silk reeling and raw silk finishing. However, due to the limitation of cocoon drying technology and process, there are some fatal defects in cocoon drying. Disadvantages. Secondly, when drying the cocoon, it is easy to cause too much water loss due to the degree of dryness (that is, it is too "old"), and the sericin is excessively denatured, which is not conducive to unwinding and reeling, or too much water retention (that is, it is too "tender") , It is easy to cause cocoons to steam and rot, which is not conducive to storage and safety. Again, it is easy to cause mechanical damage to the silkworm cocoon, yellow...

AI Technical Summary

Problems solved by technology

However, fresh cocoon pupae must be inactivated. The pupae after inactivation still contain a lot of water, which is easy to rot and deteriorate, affecting the quality of silk and the utilization of pupae. Therefore, fresh-keeping treatment must be carried out for silkworm pupae to prolong storage. time, ensure the comprehensive utilization of silk and silkworm chrysalis, and realize continuous production

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