Transportation and sale freshness retaining method for treating navel oranges with non-woven cloth freshness retaining bags by fennel liquid

A fresh-keeping method and liquid processing technology, applied in the field of fruit and vegetable storage and fresh-keeping, can solve the problems of inability to remove harmful gases in time, fruit senescence and physiological diseases, increase fruit rot rate, etc. Effect

Inactive Publication Date: 2016-03-23
GANNAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, liquid paraffin is the most widely used, which can effectively improve the appearance and control the dehydration of fruits and vegetables to a certain extent, but the thickness of the wax layer is difficult to control. If the amount is too large, it will cause the accumulation of odorous substances such as ethanol and acetaldehyde in citrus fruits. [3] ; The research and application of chitosan, propolis, palm wax and chitosan have also achieved certain results, but they are still in

Method used

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  • Transportation and sale freshness retaining method for treating navel oranges with non-woven cloth freshness retaining bags by fennel liquid
  • Transportation and sale freshness retaining method for treating navel oranges with non-woven cloth freshness retaining bags by fennel liquid
  • Transportation and sale freshness retaining method for treating navel oranges with non-woven cloth freshness retaining bags by fennel liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Gannan navel oranges picked at the end of November were selected as test materials with uniform size, uniform color, and no mechanical damage and pests. 450 test materials each, after cleaning, were treated with 3% fennel extract prepared by the above extraction method (specific embodiment 1) as group A, 3% clove extract as group B, and 3% cinnamon extract as group A. Group C, water treatment control group D, soaked for 3 to 5 minutes respectively, removed and drained, and left at room temperature for 1 to 2 days to allow the water on the skin surface to evaporate naturally. Single fruit packaged in polyethylene plastic film bags, stored in a common warehouse (20°C, RH 82%), the test results are shown in the table below.

[0034]

[0035] Through the test, 3% fennel, clove and cinnamon extracts all had antiseptic effects on navel oranges, and the rot rate at the later stage of storage was significantly lower than that of the control, and the soluble solids and vitami...

Embodiment 2

[0037] The Gannan navel oranges, which were picked at the end of November and stored at 4°C for 4 months, were used as test subjects. Fruits with uniform size, uniform color, and no mechanical damage, diseases and insect pests were selected. The non-woven fresh-keeping bags treated with methylcellulose are packaged as group A (i.e. the above-mentioned specific embodiment); the fruit is soaked with 3% fennel extract, and treated with 1% hydroxypropyl methylcellulose + 0.5% glycerin compound liquid coating film It is group B; the blank control is group C, and 450 test materials in each of the three groups are stored at room temperature (25°C, RH82%), and the fruit quality is tracked during the period.

[0038] results and analysis

[0039]

[0040] Through the test, the weight loss rate and rot rate of navel oranges in group A using the above-mentioned out-of-warehouse technology were extremely significantly (P<0.01) lower than those directly coated with film and the blank co...

Embodiment 3

[0042] Gannan navel oranges picked at the end of November and refrigerated at 4°C for 4 months were selected as test materials with uniform size, uniform color, and no mechanical damage and pests. 450 fruits per treatment.

[0043] A: Fruit soaked in 3% fennel extract, non-woven fresh-keeping bag (soaked in hydroxypropyl methylcellulose composite film solution) single fruit packaging treatment A.

[0044]The formula of hydroxypropyl methylcellulose composite membrane liquid is: 1% hydroxypropyl methylcellulose + 0.5% glycerin

[0045] B: Dipping fruit with 3% fennel extract, non-woven fresh-keeping bag (soaked in chitosan starch composite film solution) single fruit packaging treatment B.

[0046] The formula of chitosan starch composite film solution is: 1.5% chitosan solution + 3% acetic acid + 0.5% glycerin + 2% starch + 0.1% Tween

[0047] C: 3% fennel + 1.5% chitosan solution + 3% acetic acid + 0.5% glycerin + 2% starch + 0.1% Tween compound liquid coating treatment C. ...

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Abstract

The invention discloses a transportation and sale freshness retaining method for treating navel oranges with non-woven cloth freshness retaining bags by fennel liquid. The method comprises the following steps: (1) soaking oranges in fennel extracting liquid: refrigerating fresh navel oranges, screening, cleaning, and soaking in 3% fennel extracting aqueous solution for 3 to 5 min; (2) air drying: performing air drying on the navel oranges subjected to soaking in the fennel extracting liquid in a room temperature environment or hot air under the temperature of 37 DEG C to dry the surface; (3) bagging: packaging the navel oranges with the non-woven cloth freshness retaining bags treated by hydroxypropyl methyl cellulose one by one; (4) selling: storing the oranges under the condition of room temperature for sale, or transporting the oranges by a truck to a sale destination for sale. The method is used for refrigerating, delivering, transporting and selling the navel oranges; the technology is simple, safe, nontoxic, environment-friendly, sanitary and low in cost, and the operation is mechanical; particularly, in hot seasons, the weight loss ratio and the rotting rate of the navel oranges can be obviously reduced; the shelf life of navel oranges is prolonged; higher soluble solid content, vitamin C content and total acid content of the navel oranges are kept. The method can be also used for preventing rotting and retaining freshness of the navel oranges during storage.

Description

technical field [0001] The invention relates to a fruit and vegetable storage and fresh-keeping technology, in particular to a summer transportation, sales and fresh-keeping technology for treating navel oranges with fennel fresh-keeping liquid and packing navel oranges in non-woven fresh-keeping bags. Background technique [0002] my country's navel orange planting area ranks first in the world, and its output ranks third in the world. However, the navel orange cultivar is single, resulting in too concentrated marketing period, and the processing industry is backward. Only by extending the sale period through storage can better profits be obtained. At present, fresh navel oranges are mainly stored at room temperature, simple ventilated storage and low-temperature refrigeration. Among them, navel oranges that have been stored under simple ventilation and low-temperature refrigeration can be sold in April and May. However, due to the lack of effective fresh-keeping measures...

Claims

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Application Information

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IPC IPC(8): A23B7/00A23B7/154
CPCA23B7/00A23B7/154
Inventor 杨文侠邓利珍冷非凡刘可张於仁卢颖婷钟八莲
Owner GANNAN NORMAL UNIV
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