Longan-preserving method applicable for e-commerce logistics
A fresh-keeping method and technology for longan, which are applied in the fields of fruit and vegetable fresh-keeping, application, food preservation, etc., can solve problems such as SO2 levels that are not involved in technical treatment methods, and achieve the goal of reducing SO2 residues, improving color, and prolonging shelf life and subsequent refrigeration life. Effect
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Embodiment 1
[0025] A longan preservation method suitable for e-commerce logistics, comprising the steps of:
[0026] Pre-treatment: There are two treatment methods before the fruit is packed. One is to select healthy and normally developed fruits suitable for storage after harvesting mature longan, with a maturity of 85% to 95%, and keep long fruit branches of 10 to 15cm above. Soak in 500mg / kg Shibaoke and other fresh-keeping liquid for 2 minutes, take it out, and dry it in an air-conditioned room at 18-22°C for 2-3 hours, or put it in a cold storage for 3-5 hours, until the fruit temperature is about 5-15°C. The other is to spray 500 mg / kg Shibaoke and other preservatives on the trees within 1 to 7 days before harvesting, keep long fruit branches after harvesting, select, and pre-cool in an air-conditioned room for 2 to 3 hours, or put them in a cold storage for pre-cooling. cold.
[0027] Packing: Weigh it accurately and put it into a foam box with a polyethylene film bag and an ice p...
Embodiment 2
[0033] On July 25, 2016, the test of "foam box + longan fresh-keeping paper" in Shixia, Hainan
[0034] Material: Shixia variety, from Haikou, 85-90% mature, small, brownish green. Regular thickness of foam box.
[0035] Pre-treatment: Spray 500ppm Shibaoke on the fruit the day before harvesting, harvest the next morning, the temperature of the day is 36°C, and pre-cool in a cool place for nearly 2 hours. Routine selection, keep long fruit branches more than 15cm. Control CK does not use fresh-keeping paper, S1-1 and S1-2 use fresh-keeping paper at a concentration of 0.10%, and S2-1 and S2-2 use fresh-keeping paper at a concentration of 0.20%.
[0036] Packaging, storage and transportation: 5kg fruit per box, spread evenly. Among them, S1-2 and S2-2 are lined with 0.02mm thick polyethylene film bags (PE), and S1-1 and S2-1 are treated with no film bags. A piece of fresh-keeping paper is placed on the top of the fruit pile, covered with 3 layers of absorbent paper. Each bo...
Embodiment 3
[0046] On August 16, 2016, the test of "foam box + longan fresh-keeping paper" in Shixia, Yulin, Guangxi
[0047] Material: Shixia variety, from Yulin, Guangxi, 85-90% mature, brown-green. Regular thickness of foam box. Preservative paper concentration: 0.05%, 0.15% and 0.25% three gradients, numbers are: YS1-0.05%, YS2-0.15%, YS3-0.25%, YS4-0.25%, YCK1-control, YCK2-control.
[0048] Pre-treatment of fruit: No spraying and sterilization treatment was done before harvesting, and the temperature on the day of harvesting was above 36°C. After harvesting, there was not enough time for heat dissipation and pre-cooling. After sorting, the fruit was packaged and sealed. Routine selection, keep long fruit branches.
[0049] Packing method: 5kg fruit per box, put fresh-keeping paper on the top of the fruit pile, and cover with isolation kraft paper. A 0.02mm PE bag is lined between the fruit pile and the foam box. Put 2 ice packs (about 400g, covered with bubble bags) on each laye...
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