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Polyaminopropyl-biguanide-containing preservative used for control of orange stem-end rot, and preparation and applications of the preservative

A technology for polyaminopropyl biguanide and stem rot, which is applied in the field of fresh-keeping of fruits and vegetables, can solve the problems of lack of polyaminopropyl biguanide and the like, and achieve the effects of inhibiting the reproduction and growth of bacteria, having good control effect and reducing the occurrence of diseases.

Active Publication Date: 2014-08-13
珠海真绿色技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, polyaminopropyl biguanide is mainly used in the surface disinfection of cosmetics, medicine, and food processing at home and abroad. There is no research report on the application of polyaminopropyl biguanide to postharvest pedicle rot of citrus or the launch of related mature products.

Method used

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  • Polyaminopropyl-biguanide-containing preservative used for control of orange stem-end rot, and preparation and applications of the preservative

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: the preparation of the antistaling agent 1 containing polyaminopropyl biguanide

[0035] Preparation method: (1) Weigh 15 g of commercially available polyaminopropyl biguanide, place it in a container with a stirrer, add water and stir for 1 hour, dissolve to obtain a polyaminopropyl biguanide solution; (2) place it in another container with a stirrer Add commercially available sodium benzoate 10g in the container of commercially available calcium chloride 4g, add appropriate amount of water, stir 30 minutes, prepare uniform mixed solution; (3) step (2) gained mixed solution and step (1) gained polyurethane The base biguanide solution is mixed, then add commercially available sorbitan monooleate 3g, commercially available polyoxyethylene sorbitan 2g, commercially available propylene glycol 6g, mix, replenish water to 100g, stir for 30 minutes, fully emulsify and mix, and the obtained product is Preservatives containing polyaminopropyl biguanide 1.

[0036...

Embodiment 2

[0043] Embodiment 2: the preparation of the antistaling agent 2 containing polyaminopropyl biguanide

[0044] Preparation method: (1) Weigh 30 g of commercially available polyaminopropyl biguanide, place it in a container with a stirrer, add water and stir for 1.5 hours, dissolve to obtain a polyaminopropyl biguanide solution; (2) place it in another container with a stirrer Add commercially available sodium diacetate 6g in the container of commercially available calcium ascorbate 2.5g, add appropriate amount of water, stir 30 minutes, prepare uniform mixed solution; (3) step (2) gained mixed solution and step (1) gained polyurethane Mix the propyl biguanide solution, add 3g of commercially available ethylene glycol, 4g of commercially available polyglycerol fatty acid ester, and 5g of commercially available octylphenol polyoxyethylene ether, mix, replenish water to 100g, stir for 30 minutes, and fully emulsify and mix to obtain Preservatives containing polyaminopropyl biguani...

Embodiment 3

[0052] Embodiment 3: the preparation of the antistaling agent 3 containing polyaminopropyl biguanide

[0053] Preparation method: (1) Weigh 45g of commercially available polyaminopropyl biguanide, place it in a container with a stirrer, add water and stir for 1.5 hours, and dissolve to obtain a polyaminopropyl biguanide solution; (2) place it in another container with a stirrer Add commercially available citric acid 6g in the container, chitosan 4g, add appropriate amount of water, stir 30 minutes, prepare uniform mixed solution; (3) step (2) gained mixed solution and step (1) gained polyaminopropyl biguanide Mix the solution, then add 3g of commercially available sorbitan monolaurate, 4g of commercially available calcium lactate, and 4g of commercially available propylene glycol, mix, replenish water to 100g, stir for 30 minutes, fully emulsify and mix, and obtain a fresh-keeping product containing polyaminopropyl biguanide. Agent 3.

[0054] The final proportioning of the p...

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Abstract

The invention relates to a polyaminopropyl-biguanide-containing preservative used for control of orange stem-end rot, and preparation and applications of the preservative. The preservative comprises following components by weight: 10-45% of polyaminopropyl biguanide, 5-15% of an aseptic, 2-10% of a bioactivator and 10-20% of an emulsifier, with the balance being water. The preservative significantly reduces the generation of disease postharvest of the oranges and tangerines, controls the stem-end rot, has significant preservative and fresh-keeping effects, delays fruit senescence and prolongs the storage period and the shelf lifetime of the fruits. The preservative has characteristics of safety, environmental protection, no pollution to the environment, simple preparation method, low comprehensive cost, flexible and convenient using method, and easy popularization and application.

Description

technical field [0001] The invention belongs to the field of fresh-keeping of fruits and vegetables, relates to the prevention and treatment of citrus pedicle rot, in particular to a preservative containing polyaminopropyl biguanide for the prevention and treatment of citrus pedicle rot, and its preparation and application. Background technique [0002] Citrus fruit stalk rot is the main citrus late rot disease, including brown stalk rot caused by Phomopsis stem-end rot and Diplodia stem-end rot Caused by black pedicle rot. The disease mainly occurs in the later stage of storage of citrus. It starts from the fruit pedicle or wound, and extends from the local to the whole fruit. prone to cross-infection. [0003] The most commonly used chemical fungicides (such as 50% thiophanate-methyl 1500-2000 times liquid or 50% carbendazim wettable powder 2000 times liquid) are the most commonly used chemical fungicides for antiseptic and fresh-keeping of citrus after harvest. Control...

Claims

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Application Information

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IPC IPC(8): A23B7/154
Inventor 吴日章袁永雁温书恒
Owner 珠海真绿色技术有限公司
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