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Propionate hot air comprehensive treating technology and application of propionate hot air

A comprehensive treatment, hot air technology, applied in the application, heating preservation of fruits/vegetables, food preservation, etc., can solve the problems of poor fungal toxicity and long action time, and achieve the effect of easy application, convenient operation and high market acceptance

Inactive Publication Date: 2014-04-23
CHINESE ACAD OF INSPECTION & QUARANTINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, biogenic preparations generally have problems such as poor fungal toxicity and long acting time, and their application technology needs further study

Method used

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  • Propionate hot air comprehensive treating technology and application of propionate hot air
  • Propionate hot air comprehensive treating technology and application of propionate hot air
  • Propionate hot air comprehensive treating technology and application of propionate hot air

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] At 25°C, the artificially inoculated pears were soaked in a series of propionic acid solutions for 30 minutes, and then the heat treatment program shown in Table 1 was used for heating treatment. During the treatment, the temperature monitoring of the air and various parts of the fruit See figure 1 , after treatment, the pears were placed in a 25°C incubator and cultivated for 7 days, and the incidence and phytotoxicity were counted. The results are shown in Table 2.

Embodiment 2

[0019] time min Hot air temperature ℃ Hot air relative humidity % 0 30 40 30 39 / 42 / 45 50 60 42 / 45 / 48 85 60 42 / 45 / 48 85

[0020] The results of temperature monitoring show that, using the program in Table 1 for hot air treatment, the fruit surface temperatures reached 40°C, 43°C and 46°C after 90 minutes of treatment, and the programs in Table 1 can ensure that the fruit surface temperatures reached 40°C and 43°C respectively and 46°C for 60min.

[0021] Table 2 Effects of a series of propionic acid hot air treatments on the incidence and phytotoxicity of pear black spot fungus

[0022]

[0023] The results showed that hot air treatment alone could effectively reduce but not completely inhibit the pathogenicity of P. pear black spot. Soaking in propionic acid before hot air treatment can significantly improve the antibacterial effect. After soaking in 2% propionic acid for 30 minutes, use hot air at 45°C until the fruit surface ...

Embodiment 3

[0027]

[0028] The results showed that soaking with 1.5%-2.5% propionic acid for 30 minutes, then using hot air at 45°C until the fruit surface temperature reached 43°C for 60 minutes could completely inhibit the pathogenicity of pear black spot and had no effect on the quality of pears.

[0029] Example 4

[0030] Considering that pears, apples and other fruits are seriously damaged by Tetranychus hawthorne, the applicant used the conditions of Example 3 to treat pears and apples carrying Tetranychus hawthorne, and the results are shown in Table 4. The results showed that soaking with 1.5%-2.5% propionic acid for 30 minutes followed by hot air treatment until the core temperature reached 43°C for 30 minutes could completely kill the hawthorn spider mites carried by apples and pears, and had no effect on the quality of the two fruits.

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Abstract

The invention discloses a propionate hot air comprehensive treating technology and application of propionate hot air in disease and insect pest treatment after fruits are picked and belongs to the technical field of pest comprehensive control. The propionate hot air comprehensive treating technology comprises the following steps: carrying out soaking treatment on the fruits by a propionate solution with a certain concentration mainly under the normal temperature condition, then forcedly heating the soaked fruits to an appointed temperature by adopting hot air, and comprehensively utilizing the synergisms of deinsectization by washing, sterilization by propionate, deinsectization and sterilization by the hot air and propionate heat, wherein as the effective deinsectization and sterilization condition is lower than a tolerance threshold value of the fruits, the quality of the fruits is not adversely effected. The propionate hot air comprehensive treating technology has good killing effect to important pathogenic bacteria such as pear block spot bacteria which enable important fruits to be in disease after being picked and important fruit pests such as hawthorn spider mites, is low in the phytotoxicity, is environmentally friendly without residual toxic and harmful substances and can be used for replacing the traditional chemical reagent treatment and is used for treating fruit diseases and insect pests after the fruits are picked.

Description

technical field [0001] The invention relates to the technical field of integrated pest control, in particular to a treatment technology for postharvest fungal diseases and insect pests. Background technique [0002] Fruits are rich in nutrients such as vitamins, organic acids, mineral elements and antioxidant substances, and are an important part of human dietary structure. However, postharvest fruits are extremely vulnerable to insect pests and fungal diseases, resulting in serious postharvest losses. In my country, the postharvest loss rate of fresh fruits is as high as 20%-50%. [0003] Post-harvest fungal diseases and insect pests will not only cause serious storage losses, but also have a serious impact on fruit import and export trade. For example, my country's pears are of high quality and well-known at home and abroad. From 2001 to 2002, when the export volume was relatively high, my country's pears exported to the United States alone reached 8,278 tons, earning 55...

Claims

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Application Information

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IPC IPC(8): A23B7/154A23B7/005
Inventor 刘涛李丽张广平张凡华王跃进詹国平
Owner CHINESE ACAD OF INSPECTION & QUARANTINE
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