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#广东300吨冻眠10个月
The topic of lychee thawing and listing#
rushed to the top of the hot search on multiple social media platforms
It aroused heated discussions among netizens for a while
What exactly is "Lychee Sleeping"?
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In order to solve the problem of lychee preservation
The team of Cao Yong, a professor at the College of Food Science and Technology of South China Agricultural University
After 5 years of research
Successfully conquered the lychee liquid nitrogen cold and fresh technology
Launched Lychee Sleep
After actual tasting, when it is not completely thawed, the frozen sleeping lychee is more like lychee ice cream, with a dense and ice-free taste, cold and silky; After completely thawing, it is eaten with more flavor and sweetness.
The difficulty of freezing lychee is to maintain the taste and flavor, under ordinary freezing, the moisture in the food cells will form ice crystals, and as the ice crystals increase, the cells will be punctured. This is the reason why frozen food tends to have a mess of water after thawing. Cells are punctured, water is lost, and flavor is reduced, especially in plant foods, the cell wall is destroyed when frozen, and it will become soft and tumble after thawing.
Therefore, trying to avoid ice crystals from puncturing the cells is the key to maintaining the flavor and texture of frozen foods. If the temperature of the food can "jump" past the maximum ice crystal formation zone in the shortest time, the food will not form large ice crystals with uneven distribution, but will be replaced by evenly distributed fine crystals, which will significantly reduce the degree of "frostbite" of the cell tissue, so that the food can maintain its original state after thawing.
Using this technology, after the fresh lychees are picked, the team immediately carries them with a series of treatments, such as rapid pre-cooling, antibacterial and color protection, precise packaging, quick-freezing and fresh-locking, and freeze-storage and preservation, so as to achieve annual storage. In this way, the "seasonality" of lychees is eliminated and the supply is realized throughout the year.
"Lychee Sleeping" thawed and went on the market
This year, it is expected to keep more than 2,000 tons fresh
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According to the introduction
At present, the Processing Institute of Guangdong Academy of Agricultural Sciences
It has successfully broken through the ultra-low temperature freeze-sleep locking technology
It solves the difficulty of color protection of traditional frozen lychee
The bottleneck problem of rapid deterioration of quality
Deputy Director of Guangdong Provincial Department of Science and Technology
May 7 on a TV show
The "Frozen Sleeping Lychee" was displayed on the spot
According to reports, around June last year, using ultra-low temperature freeze-sleep locking technology, Guangdong preserved two or three hundred tons of freshly picked lychees, which were successively put on the market this year. When thawed and eaten, the color of "Frozen Sleeping Lychee" is as bright red as fresh lychee, the flesh is still crystal clear, and the nutritional quality can be maintained at more than 90%, meeting the needs of consumers to enjoy fresh lychee in all seasons.
It is reported
This year, the technical force is expected to be able to keep it fresh
More than 2,000 tons of fresh lychees
How much does "Lychee Freeze Sleep" cost?
"The 'Lychee Freeze Sleep' product produced last year has now been retailed on some major e-commerce platforms, and according to corporate feedback, consumers have a high degree of recognition for this new product. On some platforms, 400 grams of lychee are priced at more than 80 yuan. ”
On the afternoon of May 7, the reporter noticed in the Guangzhou Friendship Store that the price of "Frozen Sleeping Lychee" of Guangzhou Conghua Hualong Fruit and Vegetable Preservation Co., Ltd. was 69 yuan/400 grams, and the packaging bag was not marked with the variety.
The relevant person in charge of the company revealed that the offline supermarket price of Jinggang Hongnuo "Frozen Sleeping Lychee" is 69 yuan/package, and the online price is 79 yuan/package or 138 yuan/2 package, with 400 grams per package; The concubine smile is 39 yuan/pack, and the cinnamon flavor is 59 yuan/pack, 400 grams per pack. At present, the stock is not much, and this year's "Frozen Sleeping Lychee" is expected to start production on May 15.
"Lychee from Frozen Sleep" after thawing
The reporter searched on an e-commerce platform and found that the price of 1 kg of "Frozen Sleeping Lychee" produced in Guangdong was 41.58 yuan, and its advertising slogan was "Eat lychees all year round".
Did you taste your first mouthful of lychee of the year?
Want to try "Lychee in Sleep"?
Sources: China Guangzhou Release, Guangdong Release, Nanfang +, CCTV News, Southern Metropolis Daily, Yangcheng Evening News, CCTV, Pearl River Times, etc
Editor: Zheng Ying
Proofreading: Chen Xiaoli