Vacuum low-temperature dehydration technology is also known as vacuum frying, because its production process effectively avoids the damage of high temperature to the nutritional composition and quality of food, and better retains the original flavor and nutritional composition of its raw materials, the production of products than the general traditional frying process has quality.

The basic principle of vacuum low temperature dehydration is that under the condition of decompression, with oil as the medium, the evaporation temperature of water in food is reduced, and it can be rapidly dehydrated in a short time to achieve dehydration and drying of food under low temperature conditions. As a medium for food dehydration and heating, hot oil can also play an important role in improving food flavor. Therefore, the vacuum low temperature dehydration process has the following characteristics: water evaporation is fast, drying time is short; Low temperature, less loss of nutrients; It has an expanding effect on food and improves the rehydration of products. Long shelf life of the product.

"Fruit and vegetable chips" is based on fresh fruits and vegetables as raw materials, the use of vacuum low-temperature oil bath dehydration process, edible vegetable oil as a hot medium, in the low temperature vacuum state, the raw materials are dehydrated at 80 ~ 90℃. In the vacuum state, the water in the space between fruit and vegetable cells is rapidly vaporized and expanded, and the swelling effect is good. The product maintains the original color, aroma, taste and appearance of fresh fruits and vegetables, low fat and low salt, crisp taste and no chemical additives, which can be said to be a new food integrating fruits, vegetables and biscuits. In addition, low temperature frying can prevent oil deterioration, reduce costs, product safety and health.

The products maintain the original color, aroma, taste and form of fruits and vegetables, vitamins and other nutrients in fruits and vegetables are rarely destroyed, with low fat, low calorie, high fiber, rich in vitamins and minerals, especially suitable for the elderly and children, field and sea operators, travelers are also convenient auxiliary food. Because there are many varieties of fruit and vegetable chips, it also has a great effect on the correction of partial food children and fat people's weight loss, and further development can be used for instant noodles, convenient rice sales, and even for table dishes, which is a fashion food pursued by the market at present.