Charge-driven self-assembled antioxidant nanoparticles and their applications as fresh-keeping agents for fruits and vegetables and litchi

A fruit and vegetable preservative and nanoparticle technology, which is applied to the preservation of fruits and vegetables, food ingredients as antioxidants, applications, etc., can solve the problems that fungicides are easy to bring about health risks, achieve inhibition of oxidative deterioration of fruits and vegetables, and good biocompatibility Effect

Active Publication Date: 2022-05-03
WENZHOU MEDICAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main component of the antistaling agent used in the existing patented technical scheme itself has antibacterial effect (such as quaternary ammonium salt), and the use of fungicides is likely to bring health risks

Method used

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  • Charge-driven self-assembled antioxidant nanoparticles and their applications as fresh-keeping agents for fruits and vegetables and litchi
  • Charge-driven self-assembled antioxidant nanoparticles and their applications as fresh-keeping agents for fruits and vegetables and litchi
  • Charge-driven self-assembled antioxidant nanoparticles and their applications as fresh-keeping agents for fruits and vegetables and litchi

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] The Chinese and English abbreviations of the materials involved in the embodiments of the present invention are compared:

[0032] PEG means polyethylene glycol;

[0033] PGA means polyglutamic acid;

[0034] PEG-PGA means a block copolymer of polyethylene glycol and polyglutamic acid;

[0035] PEG-PBG stands for block copolymer of polyethylene glycol and polybenzyl glutamate;

[0036] MitoQ means triphenylphosphine modified antioxidant;

[0037] DMSO Dimethyl sulfoxide.

[0038] like figure 1 As shown, in the embodiment of the present invention, the preparation process can be divided into the following four parts in detail:

[0039] 1. Preparation of PEG-PGA amphoteric dissociation copolymer:

[0040] The benzyl glutamate-N-carbonyl ring anhydride i...

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Abstract

The invention discloses charge-driven self-assembled anti-oxidation nanoparticles and their application as fruit and vegetable fresh-keeping agents and litchi fresh-keeping. , to form a block copolymer of polyethylene glycol and polybenzyl glutamate, and then remove the benzyl group at the end of polybenzyl glutamate to form a block copolymer of polyethylene glycol and polyglutamate, and then combine with triphenyl Phosphine-modified anti-oxidants with punctual points self-assemble under charge-driven to form anti-oxidant nanoparticles. The use of the nanoparticles in the fruit and vegetable fresh-keeping agent can effectively inhibit the oxidative deterioration of the fruit and vegetable, and is especially suitable for the fresh-keeping of litchi which is difficult to keep fresh.

Description

technical field [0001] The invention belongs to the application field of functional materials, and specifically refers to a method for fresh-keeping treatment of litchi based on charge-driven self-assembled anti-oxidation nanoparticles. Background technique [0002] Litchi is one of the main economic fruits in southern my country, with a large planting area and market value. Litchi is prone to peel browning after harvesting, which further leads to pulp dissolution and quality deterioration, causing a large amount of economic losses to fruit farmers. The imbalance of endogenous oxygen free radicals (ROS) in fruit cells and the resulting oxidative damage of biomacromolecules are the internal factors of postharvest fruit quality deterioration. [0003] The inventor found in the research that although the accumulation of endogenous antioxidants plays an important role in the body's resistance to adversity stress (ROS outbreak), the treatment of exogenous antioxidants (Vc, BHA, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/10C08G69/16C08G69/48A23B7/154
CPCC08G69/10C08G69/16C08G69/48A23B7/154A23V2002/00A23V2200/02
Inventor 李青林森蒋国祥南开辉
Owner WENZHOU MEDICAL UNIV
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