Fresh-keeping technique for Chinese yam

Abstract

The invention discloses a fresh-keeping technique of rhizoma dioscoreae, which comprises the steps in sequence: (1) the rhizoma dioscoreae is washed and classified into different categories according to the degree of thickness and length; (2) the moisture on the surface of the rhizoma dioscoreae is removed by hypobaric drying at normal temperature; (3) rhizoma dioscoreae is weighed and put into packing bags; (4) the air in the packing bags are evacuated and inactive gas are injected into the packing bags; (5) the packing bags are sealed and inspected; (6) the gamma ray is adopted for the quantitive irradiation of the packing bags of rhizoma dioscoreae. The fresh-keeping technique of the invention can keep the quality of components contained, moisture, color and taste relatively stable for 12 months at the normal temperature without residues of any other chemical composition, maintains the eating effect of fresh rhizoma dioscoreae, thus ensuring convenient storage, transportation and sales of the rhizoma dioscoreae.

Description

Technical field: [0001] The invention belongs to the technical field of yam preservation and storage. Background technique: [0002] my country has a traditional history of planting and processing yam. As a typical health-care crop with both vegetable and medicine, it is not only an important Chinese herbal medicine, but also a precious vegetable with rich nutritional value. With the improvement of people's living standards and awareness of health care Enhanced, more and more people and habits of eating fresh yam. The fresh-keeping storage technology of yam is the premise to ensure the freshness of yam. At present, the fresh-keeping methods of yam are as follows: one is to store in low temperature and dry in winter, and to pile fresh yam in the house or underground cellar in winter. Germinate in water, and the quality and freshness period is short; the second is low-temperature fresh-keeping storage, and the ambient temperature where the yam is placed must be strictly contro...

AI Technical Summary

Problems solved by technology

The fresh-keeping storage technology of yam is the premise to ensure the freshness of yam. At present, the fresh-keeping methods of yam are as follows: one is to store in low temperature and dry in winter, and to pile fresh yam in the house or underground cellar in winter. Germinate in water, and the quality and freshness period is short; the second is low-temperature fresh-keeping storage, and the ambient temperature where the yam is placed must be strictly controlled. If the temperature is too high, the respiration of the yam will be accelerated, and the nutritional content of the yam will be reduced. If the temperature is too low, the yam will become soft and produce peculiar smell , affect the quality; the third is to use preservatives for processing and preservation. The storage of preservatives will cause the ingredients of the preservatives to remain. In addition, the injured yams are very easy to cause infection and rot, and the preservatives will have certain side effects when eating.