In today's era, how lazy economy is prevalent? From a food perspective, we do not want to wash vegetables, so that there are clean dishes on the market; meals do not want to do, there is a take-out; eat convenience foods do not want to burn hot water, so self-heating Convenient foods can be 'cooked' with only cold water. Meals ... Many foods are eaten in order to 'lazy people's economy'. They can move to the door without leaving the house.
In the food industry, instant foods are an important part of the lazy economy. Throughout the instant food industry today, products such as instant noodles, while satisfying lazy economic characteristics, have caused people to move away because of lack of health. Vacuum Freezing The drying process has become popular in recent years as a process that allows foods to be easily consumed and retains the nutrients of foods to the maximum extent possible. From the point of view of the products that appear on the market, the vacuum freeze-drying process is widely used to make fruits, Instant drinks are dry, ready-to-eat meal replacement foods, etc.
Compared with fresh fruit, the convenience of cleaning, peeling, and making dried fruit is self-evident. There is research data showing that the vacuum freeze-drying equipment is used to compare the drying process of fruits with the traditional hot air circulation drying and sun drying. From the point of view, the nutrients that can be retained by vacuum freeze-drying are basically the same as those of fresh fruits. Because vacuum freeze-drying sublimates moisture in the frozen condition of fruits, some heat-sensitive components, active ingredients are retained, and the oxidation of fruits during drying is also avoided.
The convenience of instant drinks has long been recognized by the general public. Take coffee as an example. Hand-grinding coffee requires grinding coffee beans into powder and cooking them to drink. Even if you go to a coffee shop, you need to wait for a clerk to make. Instant coffee can Instantly brewing, it eliminates the long waiting time. But the path to growth of instant coffee is not easy. There have been rumours that the aroma of instant coffee will disappear in the process of processing. It needs to use chemical flavor to create aroma, instant coffee for a time. Let people avoid it.
In the original instant coffee production process, the coffee beans were stirred and baked first, then the coffee beans were ground into a coarse powder using a grinder, and then the flavor was extruded using high-pressure hot steam, followed by heating extraction, concentration, and further extraction in a freezer compartment. The fineness of the extracted coffee particles is not enough, and further comminution is needed. However, the coffee contains too much water and needs to be dried. The previous spray dryers and other equipment will melt the frozen coffee during the drying process. With the loss, the vacuum freeze dryer can keep the frozen state of the coffee unchanged during the drying process, with less loss of flavor and no need to add flavor to create aroma.
Instant and instant meal replacement foods are often found in people's breakfast, afternoon tea and other occasions. Nowadays they have gradually extended to people's daily diet. With the vacuum freeze-drying technology maturing, freeze-dried noodles, freeze-dried millet porridge, frozen Dried jujube lotus seeds and white fungus soup and other products have appeared one after another. The use of vacuum freeze-drying equipment in these products has enabled the product to retain more healthy ingredients and has a higher degree of reduction.
In the case of millet porridge, it is necessary to cook and use millet porridge in daily life. However, freeze-dried millet porridge is produced by high-pressure steaming, and split-type low-temperature cooking processes are used to ripen the relevant ingredients, before crushing and before granulation. Need to remove the moisture of all kinds of ingredients in millet porridge, then you need to use vacuum freeze-drying equipment. It is understood that the students of Zhejiang University of Commerce and Industry developed the 'fast food Rana glutinous rice porridge' using vacuum freeze-drying equipment, raw materials The nutrients of sea cucumbers and millet, and the aroma of ingredients are retained, and the finished products reproduce the traditional taste of healthy nutrition.
With the acceleration of people’s living standards, more and more people are realizing that time is precious. People buy ready-made nutritious food instead of making their own, so that they can get more time to do what they want to do. Under the guidance of this idea, Vacuum freeze-drying equipment is bound to have more room for development in the future.