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Application of (1,2,3-thiadiazo-4-carbonyl)-hexyl carbamate in preparation of fruit preservation agent

A technology of carbamate and antistaling agent, applied in the field of fruit antistaling agent and antistaling, can solve problems such as unreported effects on bacteria and quality, and achieve the effects of easy popularization and application, low price and short processing time

Active Publication Date: 2020-01-14
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Li (2005) reported a novel bacteriostatic agent (1,2,3-thiadiazo-4-carbonyl)-hexyl carbamate [ Carbamic acid,(1,2,3-thiadiazole-4-ylcarbonyl)-,hexyl ester; CTE, see synthetic route figure 1 ] have obvious inhibitory effects on Gibberella zeae and Alternaria kikuchiana, but no reports on the postharvest pathogens and quality of litchi

Method used

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  • Application of (1,2,3-thiadiazo-4-carbonyl)-hexyl carbamate in preparation of fruit preservation agent
  • Application of (1,2,3-thiadiazo-4-carbonyl)-hexyl carbamate in preparation of fruit preservation agent
  • Application of (1,2,3-thiadiazo-4-carbonyl)-hexyl carbamate in preparation of fruit preservation agent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] By measuring the inhibitory effect of CTE [(1,2,3-thiadiazo-4-carbonyl)-hexyl carbamate] on the growth of litchi downy mildew (Peronophythora litchii) in vitro (Table 1), determine the CTE by assay The minimum inhibitory concentration (Minimum Inhibitory Concentration, MIC) and the minimum fungicidal concentration (Minimum Fungicidal Concentration, MFC) to litchi downy mildew are 5mg / L and 10mg / L, so the CTE treatment concentration that is used in this experiment is 5mg / L and 10mg / L.

[0021] Table 1 The effect of CTE on the mycelium growth of P. litchi downy mildew

[0022]

[0023] Note: "a-d" indicates the significant difference between different concentrations at the same time (P<0.05)

Embodiment 2

[0025] A method for post-harvest preservation of lychee with CTE, its detailed steps are as follows:

[0026] (1) Experimental material preparation: The picking place is the lychee orchard in Zhanjiang, Guangdong. Choose a sunny day for picking in the afternoon. Choose fresh, clean, no rot, mildew, pests and diseases, and no obvious mechanical damage. The maturity is 80% (most of the peel is red, There are still some yellow in the cracked groove, and the endocarp is white or reddish), the size and maturity of "Huaizhi" lychees are the same, and the surface of the lychee fruit is washed with tap water after being placed overnight.

[0027] (2) Preparing fruit preservatives and fresh-keeping treatment: preparing CTE solutions with a concentration of 5mg / L and 10mg / L (the CTE solutions of 5mg / L and 10mg / L are respectively dissolving 5mg and 10mg of CTE in an appropriate amount of water, and then adding water Dilute to 1L, obtain 5mg / L and 10mg / L CTE solution after mixing); Above-...

Embodiment 3

[0070] A method for post-harvest storage and preservation of lychee with CTE, the difference from Example 2 is that the control group, MIC treatment group and MFC treatment group are soaked in water, 5mg / L CTE solution and 10mg / L CTE solution for 2min respectively .

[0071] The results showed that CTE treatment of postharvest litchi fruits could effectively reduce the fruit rot rate, browning index and water loss rate, and did not affect the fruit coloring index, Vc content, soluble solids content and titratable acid in the fruit.

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Abstract

The invention discloses the application of (1,2,3-thiadiazo-4-carbonyl)-hexyl carbamate in the preparation of fruit fresh-keeping agent, fruit fresh-keeping agent and fresh-keeping method. Utilize the fruit fresh-keeping agent of the present invention, according to the fresh-keeping method of the present invention, litchi fruit is processed, can effectively reduce the decay rate, browning index and water loss rate of litchi fruit, and can not affect fruit coloring index, Vc in litchi fruit content, soluble solids content and titratable acid. The fruit fresh-keeping agent of the present invention has the advantages of safety, stable properties and low price. The storage and fresh-keeping method of the present invention is simple in operation, can effectively reduce the rot rate of litchi fruit, prolong the storage time of litchi without changing its flavor, thereby improving the quality of litchi. economic benefits of the industry.

Description

Technical field: [0001] The invention belongs to the technical field of fruit preservation, and in particular relates to an application of (1,2,3-thiadiazo-4-carbonyl)-hexyl carbamate in preparing a fruit preservation agent, a fruit preservation agent and a preservation method. Background technique: [0002] Litchi (Litchi chinensis Sonn.) is a typical tropical and subtropical fruit. It is a world-class famous fruit. Among them, litchi has the largest planting area and the highest total output in China. However, due to its special morphological structure, the pericarp of lychee is easily browned and rotted, which affects the quality of the pulp, so it is considered one of the most unstorable fruits. The browning mechanism of postharvest litchi fruit is complicated, and the predecessors have carried out various researches. The main reasons are enzymatic browning, dehydration, degradation of color and sweetness, and infection of pathogens. [0003] Azole compounds are a class...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23B7/154
CPCA23B7/154
Inventor 敬国兴刘海
Owner XIANGTAN UNIV