Detailed Explanation of the Key Technical Points for Long-Term Fresh Preservation and Storage of Jujubes

1. Technical characteristics. Applying this new technology can safely preserve fresh winter jujubes for 6 to 12 months, with a rotten fruit rate below 5%. After storage, the fruit does not change color or shape and has no off-flavor, and the sensory quality can reach 80% to 95% of that before storage. The preservation rate of the main nutrient vitamin C (VC) exceeds 80%, and the preservation rates of moisture and soluble solids content are not lower than 95%. From postharvest storage of the fruit to @#@136@#@, no chemical substances or radiation are used to treat the fruit, and green fruit with high VC content can be supplied to consumers throughout the year.

2. Market demand forecast. Chinese people as well as Japanese and Korean people like to eat fresh jujubes, and the potential market is huge. Consumers in these places should be able to pay 20 to 30 yuan per year to buy 1 kg of high-quality fresh-eating jujubes. The key lies in the quality of fresh jujubes and ensuring stable year-round supply.

3. Equipment conditions required for production and cost calculation. The production cost of fresh jujubes is 2 yuan/kg; equipment for pre-storage freezing treatment can be rented, 1 kWh of electricity can freeze 3 to 5 kg of jujubes, and the treatment cost is 0.5 yuan/kg; storage requires the use of low-temperature cold storage, and the cost of storing for 12 months is 0.5 yuan/kg, with packaging cost at 0.2 yuan/kg; land cold-chain transportation cost is 0.6 yuan/kg for 1000 km (sea transportation cost should be somewhat lower); sales cost is 0.2 yuan/kg. The total cost should be less than 3 yuan/kg.

4. Benefit analysis. Calculated according to the current domestic market price of high-quality fresh jujubes at 20 yuan/kg, investing 800,000 to 1,000,000 yuan to supply 100 t of fresh jujubes to the market for year-round sales can yield a profit of 1,000,000 yuan after deducting costs and expenses; investing 10,000,000 yuan to produce and sell 1,000 t of fresh-eating jujubes annually can yield a profit of more than 10,000,000 yuan. If fresh-eating jujubes can be marketed in southern China and Southeast Asia during the Spring Festival, Qingming Festival and Dragon Boat Festival periods, sales will be very good and prices will be higher. After large-scale production is formed, costs can be reduced and returns further increased.

5. Conditions for technology application. This technology needs to be used by sizable industrial group companies or large and medium-sized industrial and commercial enterprises. The technology-using unit should have the ability to produce new products according to market needs, have its own sales network or commercial channels, and be able to establish good cooperative relations with fresh jujube production areas. The initial capital investment requires about 200,000 to 500,000 yuan, requires a high level of operation and management, and the investment should be recovered within 3 years.

6. Technical services. After technology transfer, patent application materials and technical materials needed for production will be provided, assistance will be given in designing the production process flow and solving practical production problems, participation in market research, product sales planning and publicity work is possible, and related new technologies can also continue to be researched and developed for the production unit.