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Compound preservative for potato dry rot

A technology for compounding preservatives and dried potatoes, which is applied in the field of agricultural product storage, can solve the problems of affecting the quality of seed potatoes, commercial potatoes, economic losses, restricting the development of potato industrialization, etc. The effect of antibacterial activity

Inactive Publication Date: 2017-08-04
GANSU AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tuber rot caused by the storage period is the most serious, among which Fusarium ( Fusarium spp. ) caused dry rot losses accounted for more than 60%, seriously affecting the quality of seed potatoes and the commerciality of commercial potatoes, causing huge economic losses to the majority of potato processing enterprises and farmers, and seriously restricting the industrialization of potatoes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The formula of the compound preservative is chitosan 0.1%, citric acid 0.25%, thiabendazole 0.015% and the balance is water. According to the above formula, the citric acid, thiabendazole and chitosan are dissolved in water in sequence, and mixed evenly to obtain a mixed medicinal solution. Spray the mixed medicinal solution on the surface of potato slices, incubate in the dark at 20°C for 24 hours, and then inoculate Fusarium thiochrome cakes. After culturing for 3 days, the average diameter of the lesion measured by the cross method is 5mm, and the calculated lesion area is 19.63mm 2 ; replace the culture of the blank control with sterile water instead of the compound drug, the mean value of the lesion diameter measured by the cross method is 18mm, and the calculated lesion area is 254.34mm 2 ; The relative bacteriostatic rate of embodiment 1 is 92.28%.

Embodiment 2

[0022] The formula of the mixed agent is 0.25% chitosan, 0.5% citric acid, 0.025% thiabendazole and the balance is water. According to the above formula, the citric acid, thiabendazole and chitosan are dissolved in water in sequence, and mixed evenly to obtain a mixed medicinal solution. Spray the mixed medicinal solution on the surface of potato slices, incubate in the dark at 20°C for 24 hours, and then inoculate Fusarium thiochrome cakes. After culturing for 3 days, the average diameter of the lesion measured by the cross method is 2.2 mm, and the calculated area of ​​the lesion is 3.8 mm. mm 2 ; replace the culture of the blank control with sterile water instead of the compound drug, the mean value of the lesion diameter measured by the cross method is 18mm, and the calculated lesion area is 254.34mm 2 ; The relative antibacterial rate of embodiment 2 is 98.51%.

Embodiment 3

[0026] The formula of the mixed agent is 0.5% chitosan, 0.75% citric acid, 0.035% thiabendazole and the balance is water. According to the above formula, the citric acid, thiabendazole and chitosan are dissolved in water in sequence, and mixed evenly to obtain a mixed medicinal solution. Spray the mixed medicinal liquid on the surface of potato slices, incubate in the dark at 20°C for 24 hours, then inoculate Fusarium thiochrome cakes, and after culturing for 3 days, the average diameter of the lesion measured by the cross method is 1.2 mm, and the calculated lesion area is 1.13 mm 2 ; replace the culture of the blank control with sterile water instead of the compound drug, the mean value of the lesion diameter measured by the cross method is 18mm, and the calculated lesion area is 254.34mm 2 ; The relative bacteriostatic rate of embodiment 3 is 99.56%.

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Abstract

The invention provides a compound preservative for potato dry rot. The compound preservative comprises, in weight percentage, 0.1-0.5% of chitosan, 0.25-0.75% of citric acid, 0.015-0.035% of thiabendazole and the rest water. The citric acid is firstly added into water in proportion to dissolve, the thiabendazole is secondly added in proportion, the chitosan is thirdly added in proportion, and mixture is uniformly mixed to obtain the compound rot prevention agent, the compound rot prevention agent has the advantages that the compound rot prevention agent is safe in environment, efficient and replaceable, chemical disinfectant consumption is reduced and the like. The relative inhibition rate of the compound preservative for the dry rot is 92.28% or more. By the aid of the compound preservative, the thiabendazole residual amount of potato blocks is lower than maximum residue limit of thiabendazole of commercial potatoes in European standards.

Description

technical field [0001] The invention belongs to the field of agricultural product storage, and in particular relates to a composite preservative for potato dry rot. Background technique [0002] In recent years, with the improvement of people's understanding of the nutritional and economic value of potatoes and the rise of the potato processing industry, while expanding the potato planting area, increasing the supply and processing volume, the winter storage of potatoes has also increased a lot. However, due to the lack of equipment for recording and controlling temperature and humidity, lack of ventilation and refrigeration equipment, no scientific warehouse design, failure to store seed potatoes, commercial potatoes and edible potatoes separately, and low degree of mechanization, it is not conducive to the use of chemical reagents. Therefore, during the potato storage process, the loss rate of potato pieces due to water loss, greening, germination, and storage period disea...

Claims

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Application Information

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IPC IPC(8): A01N43/78A01N43/16A01N37/36A01P3/00
CPCA01N37/36A01N43/16A01N43/78
Inventor 朱艳寇宗红陈富李永才毕阳
Owner GANSU AGRI UNIV
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