Longan-preserving method applicable for e-commerce logistics

Abstract

The invention discloses a longan-preserving method applicable for e-commerce logistics. The method is described as follows: adopting a common foam box with an internally lined polyethylene film preservation bag to form outer packing; placing ice packs sleeved by bubble wrap which has an isolation effect in the central position of the bottom of the foam box; evenly placing longan fruits with fruit spurs around the ice packs and on the ice packs; after the ice packs are fully surrounded by the longan fruits, laying a piece of longan-preserving paper having the same area with the opening of the internal foam box on the longan fruits; laying a piece of isolation paper having the effects of insulating air and resisting humidity on the longan-preserving paper; and finally, folding the upper extra part of the preservation bag flatly, performing sealing, covering the foam box with a lid and sealing tightly around the lid with box-sealing tapes to prevent air leakage and cool leakage. The preservation method provided by the invention can not only increase a good-quality fruit rate and extend the shelf life and the subsequent refrigeration life of the longan fruits but also reduce the residual amount of SO2 in the fruits and improve the uniformity of the SO2 content of the piled fruits.

Description

technical field

[0001] The present invention relates to the field of fruit fresh-keeping technology, in particular to the normal-temperature fresh-keeping technology for longan, and more specifically, to a fresh-keeping method for longan suitable for e-commerce logistics. Background technique

[0002] Longan is one of the four major fruits (banana, citrus, litchi, and longan) in the subtropical region of southern my country. In the past two decades, the planting area and output of longan have reached a historically high level. Because longan fruit is sweet in flavor, rich in nutrition and has certain health care functions, it is deeply loved by consumers at home and abroad. However, my country's longan is generally matured in the hot summer season, has strong breathing, is difficult to store and transport, and the pericarp is easy to brown, and the problem of pulp autolysis is prominent. The loss rate after reaching the northern market is as high as more than 30%. Plus bulk...

Examples

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...

technical field

[0001] The present invention relates to the field of fruit fresh-keeping technology, in particular to the normal-temperature fresh-keeping technology for longan, and more specifically, to a fresh-keeping method for longan suitable for e-commerce logistics. Background technique

[0002] Longan is one of the four major fruits (banana, citrus, litchi, and longan) in the subtropical region of southern my country. In the past two decades, the planting area and output of longan have reached a historically high level. Because longan fruit is sweet in flavor, rich in nutrition and has certain health care functions, it is deeply loved by consumers at home and abroad. However, my country's longan is generally matured in the hot summer season, has strong breathing, is difficult to store and transport, and the pericarp is easy to brown, and the problem of pulp autolysis is prominent. The loss rate after reaching the northern market is as high as more than 30%. Plus bulk...

Examples

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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