There is a saying that 'the daylily is cool', it is true that the daylily is really 'cool'. Recently, it is the day of picking the daylily, after picking, the daylily is either fresh, or processed deep into dried vegetables, or through quick-frozen The production line is processed into quick-frozen products, and the fresh daylily is smoothly placed on the people's table.
Daylily, also known as day lily, forget-seeking grass, the general flowering period is from May to September, its young flower buds can be eaten, can only be picked once a year, the raw material gap is large. In addition, after the day lily is picked, its nutrition The substance will constantly change, which in turn affects its color, aroma, taste and nutritional value. At the same time, fresh daylily has a high water content, if not stored properly or not processed in time, in a series of respiratory metabolism, evaporation, etc. In physiological activities, it is necessary to consume nutrients in the body, causing a lot of decay or flowering, losing the nutritional value and taste. To this end, this makes the frozen daylily in short supply.
The daylily is really 'cool'. The quick-frozen equipment helps the needles on the table.
According to the relevant personnel, the quick-frozen food processed by quick-frozen daylily through rapid low temperature (below -18 °C) has small crystals formed by quick freezing. After thawing, the product can maintain the original freshness and flavor, and the loss of nutrients is low. It can inhibit the reproduction of spoilage microorganisms and the activity of the enzyme of day lily. Therefore, compared with fresh daylily, the frozen daylily preservation time is longer.
The author understands that quick-frozen daylily needs to be harvested, picked, washed, blanched, cooled and drained, frozen in single-freezer, packaged, and stored in cold storage. Among them, blanching and quick-freezing are in keeping materials fresh. It plays an important role in color and quality. Blasting effectively stops the activity of enzymes in day lily, in order to keep the product fresh and color, and retain the original fragrance. In addition, because the day lily contains colchicine, it cannot be born. To eat, it must be blanched, and it also lays a good foundation for the next quick freezing process.
It is understood that Zhucheng Dakun mechanical water bath type blanching machine is suitable for cooking and blanching of various products. The cooking and blanching time can be adjusted by the conveyor belt, the adjustment speed can be adjusted by frequency or infinitely, and at the same time, the temperature of blanching The temperature control device is used to set the automatic temperature control to prevent the blanching temperature from being too high or too low to affect the quality of the daylily. In addition, the heat preservation device can prevent the risk of burns during the operation of the employee and make the device operate more. Safety.
After the blanching, the daylily must be cooled and drained before entering the quick-freezing machine. At present, there are many quick-freezing equipments on the market, such as spiral quick-freezer, tunnel quick-freezing machine, ascending quick-freezing machine, fluidized-type quick-freezing machine, propulsion The type of quick-freezing machine, etc., like a spiral quick-freezer, uses spiral to convey the product, and the amount of freezing is large. At present, it is widely used, and users can also select the quick-freezing machine suitable for production according to the processing needs.
The author was informed that although the spiral quick-freezer developed by Hangzhou No. 1 uses two rotating drums around the drum to improve the production efficiency and increase the amount of freezing, it still highlights the advantages of compact structure and small footprint. In addition, the device is equipped with a programmable controller and a touch screen, which can adjust the freezing time in the screw box according to the size of the product, and ensure the freezing temperature at the exit, to avoid the uneven temperature affecting the quality of the material.
It can be seen that the daylily is really 'cool'. Through the deep processing of the daylily, the use of the quick-freezing production line not only enhances the added value of the agricultural products, but also greatly extends the shelf life, making the products easy to preserve, and allowing more quick-frozen daylilies to go on. People's dining table.