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Decompression refrigeration technology accurately solves pain points in lychee circulation

Time: 2023-11-21 11:03:33

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From May to July this year, our company and the Agricultural Products Processing Research Institute of the Chinese Academy of Tropical Agricultural Sciences jointly carried out the application of lychee vacuum refrigeration and preservation in the main lychee production area of Gaozhou City, Maoming, Guangdong Province, achieving a beautiful result of lychee high-quality pure physical preservation for more than 42 days. The relevant situation has been reported on media such as People's Daily, People's Daily, Farmers' Daily, China Food News, and Guangzhou Daily. As is well known, there is basically no off-season sales market for lychees in Guangdong, and good technology must serve demand in order to truly realize its value. The technology of vacuum refrigeration for high-quality pure physical preservation for more than 42 days is a very practical problem, which is how to ground the air and how to play a role. You don't need to give charcoal in the snow, but at least add the icing on the cake! Through visits and discussions with multiple leading lychee enterprises in Maoming City, Guangdong Province, our company has summarized the following four most prominent pain points in terms of preservation for the sustainable development of the lychee industry. Every pain point is very grounded.


Pain point 1: fear of staying overnight after harvesting lychees


Due to the existence of this pain point, local fruit farmers have to wake up early every day to pick lychees, race against the clock to sort, pack, and box them. Some lychees need to be transported by air before 12 noon, and the remaining lychees need to be transported by refrigerated trucks in the afternoon, which is labor-intensive and stressful. The lychees that were not transported away in the afternoon made the fruit farmers very nervous and afraid to stay overnight. After staying overnight, lychees were basically not sold the next day due to preservation difficulties. Even if they were sold to customers, they were likely to rot and deteriorate, and were rejected or claimed compensation by customers.Decompression refrigeration and short-term treatment can accurately solve the pain points of lychees that are afraid of staying overnight.After harvesting lychees, they are subjected to short-term decompression treatment (also known as "vacuum dormancy treatment") for 5-10 hours in a vacuum refrigerated warehouse. The respiration, heat, and respiration intensity of lychees are greatly inhibited (within 10% after 1 hour), and several active enzymes that affect the ripening and aging of lychees are inhibited, killing insects and inhibiting bacteria, delaying the decline of lychee nutritional quality, and greatly extending the shelf life of lychees, Especially the shelf life at room temperature. According to tests conducted in the lychee production area in June this year, the shelf life of lychees treated with reduced pressure at room temperature can reach 48 to 72 hours. There are on-site photos as evidence.



After short-term decompression treatment, lychees are not only not afraid of staying overnight, but also better after staying overnight. The shelf life of lychees after staying overnight is longer, and the shelf life at room temperature is longer. According to the practical application of our company's decompression refrigeration warehouse in the lychee production area of Gaozhou City, Maoming, Guangdong Province from May to July this year, even if lychees spend 9 or even 20 nights in the decompression refrigeration warehouse, the color, flavor, and taste of lychees are almost no different from those just picked from trees. There are on-site photos as evidence.



Pain point 2: Unable to harvest and sell on rainy days


The production season of Guangdong lychees coincides with the rainy season, and rainfall is a high probability event. After lychees are wetted by rain on rainy days, traditional techniques are very difficult to preserve. Even if they are picked and shipped with luck, they are easily rejected or claimed by consumers due to preservation issues. As a result, fruit farmers are hesitant to pick and sell lychees on rainy days, seriously affecting sales performance and income. By utilizing the efficient preservation ability of the vacuum refrigerated storage, fruit farmers can harvest a large number of lychees in advance according to weather forecasts and store them in the vacuum refrigerated storage. Even if it rains continuously for one or two weeks, they are not afraid of it, and there are also fresh lychees available for shipment and sales. As mentioned above, lychees stored in a vacuum refrigerated warehouse for 20 days are also crystal clear, not much different from those just picked from trees, and have a better shelf life, especially at room temperature. See the above figure.


Pain point 3: Litchi logistics costs are too high


Currently, in cities far from lychee producing areas, fresh and delicious lychees are mostly consumed by air freight, resulting in very high logistics costs. Consumers who purchase lychees for 200 yuan usually have a shipping fee of 100 yuan. After short-term decompression treatment, lychee has a better shelf life, especially at room temperature. It can be safely transported to various parts of the country, including remote areas such as Xinjiang and Inner Mongolia, through cold chain highways, significantly reducing the logistics and transportation costs of lychee. Reduce the dependence of lychee logistics on aviation, so that lychee shipping costs no longer account for half of the selling price. It can also allow many logistics companies with slightly lower competitiveness to take orders for lychee cold chain transportation more calmly without worrying about preservation issues, which will also significantly save shipping costs.


Pain point 4: Lychee is afraid of staying overnight at the distribution center


Many lychee production and sales enterprises have distribution centers in cities such as Shanghai, Beijing, Xi'an, and Chengdu. Litchi is transported to distribution centers through cold chain trucks and then distributed to various surrounding urban and rural areas. If for some reason, lychees are not transported in a timely manner on the same day, allowing lychees to stay overnight at the distribution center will be a very frustrating thing for lychee enterprises. The probability of lychees being rejected and claimed by consumers after staying overnight is unbearable. After having a decompression cold storage, it is no longer a problem for lychees to stay overnight at the distribution center. They are not afraid to spend one or even seven nights. Configuring an appropriate amount of decompression refrigeration storage at the lychee distribution center can effectively solve this pain point.


The four pain points mentioned above are the most prominent preservation challenges that constrain the development of the lychee industry.Our company is fortunate to be able to play a role through our vacuum refrigeration technology and equipment, providing timely assistance and solving difficulties for enterprises in the lychee industry chain, and contributing to the cause of agriculture, rural areas, and farmers. This not only gives us a sense of achievement, but also a deep sense of responsibility. Only by making persistent efforts and striving forward can we make progress.


Shanghai Shanrushui Freshness Preservation Technology Co., Ltd. is a technology-driven private enterprise that specializes in vacuum refrigeration, vacuum pre cooling, and vacuum cold fresh chain technology equipment. Our company's specialized vacuum storage and preservation technology is a revolutionary technological advancement in preservation. Currently, our company is the leader in this technology, and the technical principles are through the comprehensive application of vacuum reduction (vacuum, usually between 500-2000Pa, about 0.5% -2% standard atmospheric pressure), suitable low temperature environment, our company's proprietary vacuum humidification technology, and our company's proprietary vacuum continuous and stable ventilation technology, Realizing a significant extension of the freshness period of fresh agricultural products, significantly extending the shelf life at room temperature, killing insects and inhibiting bacteria, and maintaining better nutritional quality, has a broad market application prospect. At present, it has achieved good performance in the preservation of characteristic agricultural products in the Yangtze River Delta region, tropical fruits and vegetables in the Pearl River Delta region, and the market for dried fruits and insecticides in Xinjiang region!

Decompression refrigeration technology accurately solves pain points in lychee circulation
From May to July this year, our company and the Agricultural Products Processing Research Institute of the Chinese Academy of Tropical Agricultural Sciences jointly carried out the application of lychee vacuum refrigeration and preservation in the main lychee production area of Gaozhou City, Maoming, Guangdong Province, achieving a beautiful result of lychee high-quality pure physical preservation for more than 42 days. The relevant situation has been reported on media such as People's Daily, Pe
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