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Method for improving chlorophyll preservation of dehydrated green vegetable thermally stimulated free from selenium-enriched controlled and radical

A technology of free radicals and chlorophyll, applied in the field of storage, processing and vegetable cultivation, can solve the problems of vitamin damage, excessive copper and zinc content in vegetables, etc., and achieve the effect of increasing the content of selenium

Inactive Publication Date: 2007-06-06
JIANGNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pH value method is due to the method of increasing the pH value of the pretreatment solution, which causes great damage to the nutrition of vegetables, especially vitamins; the replacement of magnesium nuclei is due to the method of using copper ions or zinc ions to replace, which is easy to cause vegetable copper and zinc. serious excess

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: Selenium-enriched treatment of green peppers and the color protection effect of scavenging free radicals

[0014] First plant green peppers in non-high selenium areas (selenium content in the soil is 0.1-0.5 μg / g), and the land area is about 50m 2 , the pH of the soil is about 6.5. Add 5ml, 0.05% Tween 80 per liter to the prepared inorganic selenium solution, spray the plants with a concentration of 75 μgSe / g at the seedling stage 15 days after seed germination, and then spray the flowers on the second day after flowering. Spraying treatment with a concentration of 220μgSe / g, and finally spraying the fruit with a concentration of 70μgSe / g 30 days before harvest; the inorganic selenium in the spray solution is sodium selenite. This method can make the harvested selenium-enriched green peppers contain 0.70-0.80 μg / g of total selenium, wherein the proportion of organic selenium reaches about 84%.

[0015] After harvesting, select 50 kg of the above-mentioned g...

Embodiment 2

[0016] Embodiment 2: Selenium-enriched treatment and scavenging free radical color protection effect of kidney bean

[0017] First plant beans in non-high-selenium areas (0.1-0.5μg / g selenium in the soil), with a land area of ​​about 350m 2 , the pH of the soil is about 6.0. Add 10ml, 0.05% Tween 20 per liter to the prepared inorganic selenium solution, spray the plants with a concentration of 70 μg / g selenium at the seedling stage 15 days after the seeds germinate, and spray the flowers on the second day after flowering. The concentration of 200μgSe / g was sprayed, and finally the fruit was sprayed with a concentration of 60μgSe / g 25 days before harvest; the inorganic selenium in the spray solution was sodium selenite. This method can make the harvested selenium-enriched kidney beans contain 0.75-0.80 μg / g of total selenium, wherein the proportion of organic selenium reaches about 80%.

[0018] After harvesting, select 50 kilograms of the above-mentioned kidney bean raw mate...

Embodiment 3

[0019] Embodiment 3: Shallot selenium-enriched treatment and scavenging free radical color protection effect

[0020] First plant green onions in non-high-selenium areas (selenium content in the soil is 0.1-0.5μg / g), and the land area is about 200m 2 , the pH of the soil is around 7.0. Add 8ml, 0.03% sucrose fatty acid ester per liter to the prepared inorganic selenium solution, spray the plants with a concentration of 65 μg / g selenium at the seedling stage 15 days after seed germination, and then spray the plants with a concentration of 180 μg Se on the 30th day. / g spraying treatment, and finally 10 days before the harvest, the fruit was sprayed with a concentration of 50μgSe / g; the inorganic selenium in the spraying solution was sodium selenite. This method can make the harvested selenium-enriched shallots contain 0.85-0.90 μg / g of total selenium, wherein the proportion of organic selenium reaches about 87%.

[0021] After harvesting, select 50 kg of the above shallot raw...

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Abstract

A method for retaining the content of chlorophyll in dewatered green vegetables by enriching Se in the green vegetables to remove the free radicals generated in hot processing includes such steps as spraying the Se-enriching fertilizer onto the leaves of growing vegetables by three phases, using one or more of tween-20, tween-80 and sucrose ester of fatty acid to improve the absorption to se, harvesting, pretreating and dewatering by hot air or vacuum freezing.

Description

technical field [0001] A method of selenium enrichment to control heat-stimulated free radicals and improve chlorophyll preservation in dehydrated green vegetables. The invention belongs to the technical field of vegetable cultivation, storage and processing. Background technique [0002] The original purpose of the free radical theory was to reveal the mechanism of human aging and cancer, but the research scope of free radicals has been expanded to a new field of improving the biochemical quality of processed food, that is, to combine free radicals with the biochemical quality of processed food research. There are generally physical, chemical and biochemical reasons for the generation of free radicals in the body. In recent years, it has been found that free radicals can also be stimulated in plants (such as tea and vegetables) through thermal stimulation (Zhao Zhenghui, 1992; Zhang Min, 1998). [0003] Hydroxyl free radicals are the main initiator of lipid peroxidation,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/02
Inventor 张慜孙金才安建申莫海珍杜卫华肖功年沈理达
Owner JIANGNAN UNIV