Hydrogen-rich degradation agent capable of reducing nitrite accumulation in postharvest vegetables and fruits as well as preparation method and application of hydrogen-rich degradation agent

A nitrite and degrading agent technology, applied in the application, fruit and vegetable preservation, gas-containing food ingredients, etc., can solve the problems of unclear safety, side effects, etc., to reduce accumulation, slow down the loss of nutrients, and achieve obvious cost-effectiveness. The effect of environmental advantages

Active Publication Date: 2017-06-30
NANJING AGRICULTURAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a hydrogen-rich degradation agent that reduces the accumulation of nitrite in post-harvest vegetables and fruits, and overcomes the defects of side effects and unclear safety in the prior art

Method used

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  • Hydrogen-rich degradation agent capable of reducing nitrite accumulation in postharvest vegetables and fruits as well as preparation method and application of hydrogen-rich degradation agent
  • Hydrogen-rich degradation agent capable of reducing nitrite accumulation in postharvest vegetables and fruits as well as preparation method and application of hydrogen-rich degradation agent
  • Hydrogen-rich degradation agent capable of reducing nitrite accumulation in postharvest vegetables and fruits as well as preparation method and application of hydrogen-rich degradation agent

Examples

Experimental program
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Effect test

example 1

[0028] Example 1: Preparation method of hydrogen-rich degradation agent

[0029]The hydrogen-rich degradation agent uses water as a solvent, and the concentration of hydrogen in the solvent is 5-4000ppb (1ppb=1μL / L). Ascorbic acid with a final concentration of 0.1-1000 μmol / L may also be added to the solvent. When preparing the hydrogen-rich degradation agent, hydrogen gas is firstly prepared, and then the hydrogen gas is passed into the solvent for more than 3 minutes, and further diluted to obtain hydrogen-rich solutions with different concentrations. The hydrogen is released from the hydrogen cylinder or prepared by chemical method or electrolytic water method, the specific method is as follows:

[0030] Use a hydrogen cylinder, which stores high-purity hydrogen, which can be directly passed into the solvent. By chemical method, i.e. using NaBH 4 or KBH 4 Hydrogen is produced by hydrolysis in alkaline aqueous solution, and the mass fraction of the hydrogen production re...

example 2

[0032] Example 2: Improving the ability of celery to degrade nitrite after picking

[0033] Using the freshly picked "Zhangqiu Baoqin" celery as the material, the hydrogen gas obtained by electrolysis of water was first passed into deionized water to prepare a hydrogen-rich degradation agent with a concentration of 1000ppb, and then diluted with deionized water to different concentrations (0 , 10ppb, 100ppb, 500ppb) of hydrogen-rich degradants, the above-mentioned hydrogen-rich degradants of different concentrations, 1000μmol / L ascorbic acid (that is, vitamin C, Vc, a kind of antioxidant nutrients, can scavenge free radicals, have the effect of reducing sub The effect of nitrate accumulation), hydrogen-rich degradation agent and Vc compound to treat celery separately, so as not to contain H 2 Deionized water was used as a control (CK, the same below) to study the effects of hydrogen-rich degradation agents on the content of nitrite and vitamin C in celery after picking. In th...

example 3

[0039] Example 3: Reducing the accumulation of nitrite after picking Chinese cabbage

[0040] Using the freshly picked "Wuta Cai" cabbage as the material, the hydrogen-rich spheres were placed in tap water to produce hydrogen for 30 minutes to prepare the hydrogen-rich degradation agent, and the effect of the hydrogen-rich degradation agent on the nitrite content in the picked cabbage was studied. influences. The hydrogen concentration of the hydrogen-rich degradation agent is 400ppb, and it does not contain H 2 tap water as a control. During storage, pakchoi were sprayed with tap water, hydrogen-rich degradant, 1000 μmol / L ascorbic acid, and a compound solution of hydrogen-rich degradant and ascorbic acid, once a day, and stored at room temperature (20°C) for 5 days to measure the nitrite content. The experimental results are shown in Table 2. Compared with the control, both the hydrogen-rich degradant treatment and the ascorbic acid treatment can reduce the accumulation of...

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Abstract

The invention provides a hydrogen-rich degradation agent capable of reducing nitrite accumulation in postharvest vegetables and fruits as well as a preparation method and an application of the hydrogen-rich degradation agent and is widely applied to the field of storage and processing of the vegetables and the fruits. The hydrogen concentration of the hydrogen-rich degradation agent is 5-4000 ppb (1 ppb=1 mu L/L), and the hydrogen-rich degradation agent can further contain ascorbic acid, namely, vitamin C (Vc) with the final concentration of 0.1-1000 mu mol/L and can effectively reduce nitrite accumulation in the vegetables and the fruits when used for spraying or soaking treatment of the fresh vegetables and fruits. The hydrogen-rich degradation agent is simple to prepare and low in cost, so that the preparation method further has the characteristics of being pollution-free, environment-friendly, low in cost, free of toxic products after use and wide in application range, and the hydrogen-rich degradation agent is suitable for both small-range use in families and fields of commercial vegetable and fruit storage, processing and transportation.

Description

technical field [0001] The invention relates to a hydrogen-rich degradation agent capable of reducing the accumulation of nitrite in postharvest vegetables and fruits, a preparation method and application thereof, and is widely used in the fields of storage and processing of vegetables and fruits. Background technique [0002] Nitrite is a general term for a class of inorganic compounds, mainly referring to sodium nitrite. As one of the most common nitrogen-containing compounds in nature, nitrite exists widely in people's lives. Usually, nitrite is mainly used as a preservative and coloring agent in the food processing process of meat and pickles, and is an essential ingredient of food additives such as sausage improver, meat tenderizer powder and meat water retention agent. However, excessive intake of nitrite is harmful to the human body. After nitrite enters the human body, it can oxidize the ferrous ions in hemoglobin to ferric ions in the blood, so that the hemoglobin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L5/20A23B7/154A23B7/155
CPCA23B7/154A23B7/157A23V2002/00A23V2250/12A23V2250/708
Inventor 沈文飚张毅华苏久厂梅玉东向志鑫谢彦杰崔为体严欣宇孙一锦孟至圆孙传浩冯菁菁黄丽琴
Owner NANJING AGRICULTURAL UNIVERSITY
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