New technology of food dehydration turns fruits and vegetables into healthy snacks.

Hello, everyone, I am a favorite apricot! "Okra, crunchy." Dehydrated vegetables have a unique taste, but the originally soft and sticky okra has a crisp taste like potato chips, and its green color and full shape look very gratifying.

nutrition, convenience, safety and green are the trends of food production development at present. Consumers' demand for snack food is no longer satisfied with the basic level of consumption demand such as good taste, good hygiene and high quality packaging.

The products are delicious, but also green and healthy, which can supplement their nutrition. The characteristics of fruit and vegetable chips just meet the consumer demand for snack food and are deeply loved by consumers.

fruit and vegetable dehydration technology

the application principle of vacuum low temperature technology in food dehydration and drying is actually easy to understand, that is, under the conditions of vacuum and negative pressure, the boiling point of water is reduced, and the water in the intercellular space of fruits and vegetables is rapidly vaporized, thus achieving the effect of dehydration and drying. Because there is little change in food properties during the whole dehydration process, the fruit and vegetable chips preserve the pure natural color of fresh fruits and vegetables, and have a crisp taste, which is beneficial to health and suitable for all ages.

Today, we invite Professor Yi Zhu, a food expert from China Agricultural University, to tell us about two technologies for making fruit and vegetable chips-low temperature dehydration technology and freeze-drying technology.

Yi Zhu: Low-temperature dehydration technology and freeze-drying technology are both technologies for processing fruits and vegetables at low temperature. There is still a difference between the two. Let me talk about freeze-drying first. Freeze-drying is the best and mildest method in low-temperature processing technology. The temperature is reduced to about -4 degrees, and then the moisture of fruits and vegetables is removed under vacuum. In this way, the preservation effect of nutrients is particularly good, especially for fruit and vegetable products. But also eliminates the growth of microorganisms and is convenient for long-term storage. Freeze-drying can remove about 55%-99% of water, and it can be preserved for a long time without deterioration, which is a purely physical process. But it is generally used in high value-added foods or medicines.

are the fruit and vegetable chips high in calories? Is the nutrient loss serious?

Yi Zhu: Compared with freeze-drying technology, low-temperature dehydration technology still has shortcomings. Fruit and vegetable chips are usually processed by low-temperature dehydration technology, and they are also fried, but they are fried under vacuum and low temperature. Natural pigments and colors are kept well, and the loss of aromatic substances is less. Fat and calories are lower than normal fried chips, but because they are fried, there are still calories. According to the requirements, the oil content of fruit and vegetable chips fried in vacuum at low temperature is not more than 25%-3%.

Recently, an instant instant hot pot will appear in many TV dramas and variety shows! Meat slices, lotus root slices, potato slices and all kinds of vegetables are soaked in hot water, and the original fresh state is restored from the dry state, and this is the freeze-drying technology.

cute &; Small snacks

The market for fruit and vegetable snacks has developed well. On the one hand, it meets the health needs and the living conditions on the road. Modern life is getting busier and busier. People no longer stay at home and office for a long time. The living conditions of "always on the road" are becoming more and more common, and consumers begin to pursue the convenience of enjoying snacks at all times. For example, nuts, potato chips and Oreos have all introduced small packaging products or quantitatively distributed packaging. In addition, the demand of Chinese consumers is gradually changing, people are more pursuing diet control and health care, and the demand for health and health care functions in food is increasing day by day. Fruit and vegetable snacks are favored by consumers with their main concept of health.

in addition to convenience and health, let's say another word, cute. In the past, chestnuts, hazelnuts and other nuts on the street and roasted seeds and nuts stalls were packaged into gift boxes after brand operation, and sales on e-commerce platforms rose sharply. In the changes of snacks in recent years, the "face value economy" is particularly obvious. Consumers pay more and more attention to the appearance design of snacks, and the sales of gift-packed snacks are particularly prominent, showing a high-end trend. Minority and personalized food products are more favored by the post-95 s. This group pays attention to the correlation between products and themselves, interesting names, unique packaging design and innovative product tastes, which can make snacks bring their own traffic.

In addition, the consumption habits of China consumers' snacks between meals make high-protein snacks a development trend. This product is more hungry and can supplement long-term energy, so meat snacks will have great development opportunities.

With the development of economy, changes in dietary habits and life behaviors, snacks have become an indispensable part of the diet. The survey found that at least 6% of Beijing residents eat snacks every day. The snack consumption rate and average snack consumption of urban children, adolescents, middle-aged and elderly people in China are on the rise, especially preschool children. It has been reported that in some people, the energy provided by snacks has almost accounted for 1% of the total energy of the whole day.

Of course, consumers' concern about health and nutrition in China also makes snack manufacturers use more natural ingredients instead of additives, and the processing process is healthier, for example, baking instead of frying reduces the intake of oil.

without boasting, of all the snacks on the market, which one is not related to agricultural products? I hope everyone can also grasp the general direction of healthy snacks and get a share. Ok, I am a small apricot who loves to eat. Please ask me about eating.

The content source is China, Agriculture, Countryside and Farmers.