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Nano selenium nutrition conditioning agent for fruit and vegetable and its preparing process

A nutrient regulator and nano-selenium technology, applied in agricultural chemistry, biological nanomaterials in the fields of plant nutrition and agricultural biology, can solve the problems of low plant utilization rate, high use concentration, soil compaction, etc., so as to improve the selenium content and use Small dose, the effect of delaying plant senescence

Inactive Publication Date: 2005-03-16
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In these existing selenium-enriched fertilizers, the added selenium is mainly inorganic selenium and selenium ore powder, and there are many problems in practical application, such as low plant utilization rate, relatively high concentration, and damage to leaves and fruits. phenomenon; as a base fertilizer, it is prone to soil compaction

Method used

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  • Nano selenium nutrition conditioning agent for fruit and vegetable and its preparing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Preparation of Nano Selenium Using Starch Nanospheres as Template

[0035] (1) Preparation of starch nanospheres

[0036] 1. Weigh 1.5g soluble starch, heat and hydrolyze it in 150ml distilled water.

[0037] 2. Slowly add crosslinking agent POCL accounting for 1% of the starch mass when the hydrolyzate is cooled to 40°C 3 , 500r / min stirring reaction for 30 minutes.

[0038] (2) Preparation of nano-selenium

[0039] 1. Weigh 300mg sodium selenite and dissolve it in 150ml water;

[0040] 2. Take by weighing 900 mg of ascorbic acid and add it to the aqueous solution of sodium selenite, and add the starch aqueous solution prepared in (1) to the reaction solution simultaneously, stir and react at 500 r / min for 3 hours, form a red transparent solution, and obtain red nano-selenium.

[0041] Add wetting agent Tween-80 and conventional nutrient composition K in the red nano-selenium solution prepared above 2 SO 4 、KNO 3 、KH 2 PO 4 , Stir and mix well, you can prepare...

Embodiment 2

[0043] Preparation of Nano Selenium Using Chitosan as Template

[0044] (1) Preparation of Chitosan Nanospheres

[0045] 1. Take by weighing 1.5g chitosan powder, dissolve completely in 150ml 1% acetic acid solution under stirring condition.

[0046] 2. Slowly add 1% TPP solution until milky white appears, the amount of TPP added dropwise is 1 / 10 of chitosan, and stirred at 500r / min for 30 minutes to form an emulsion.

[0047] (2) Preparation of nano-selenium

[0048] 1. Weigh 300mg of sodium selenite and dissolve it in 150ml of water;

[0049] 2. The chitosan nano-microspheres prepared by (1) are added in the aqueous solution of sodium selenite, and stirred at 500r / min for 10min;

[0050] 3. Weigh 900 mg of ascorbic acid, add it to the mixed solution of chitosan nanospheres and sodium selenite, continue to stir and react for 3 hours to form a deep red transparent solution, and obtain red nano selenium.

[0051] Add wetting agent Tween-20 and conventional nutrient compositio...

Embodiment 3

[0053] Preparation of Nano Selenium Using Chitosan as Template

[0054] (1) Preparation of Chitosan Nanospheres

[0055] 1. Take by weighing 1.8g chitosan powder, be dissolved in the acetic acid solution of 150ml 1% fully under stirring condition.

[0056] 2. Slowly add 1% TPP solution until milky white appears, the amount of TPP added dropwise is 1 / 10 of chitosan, and stirred at 500r / min for 30 minutes to form an emulsion.

[0057] (2) Preparation of nano-selenium

[0058] 1. Weigh 300mg of sodium selenate and dissolve it in 150ml of water;

[0059] 2. The chitosan nano-microspheres prepared by (1) are added in the aqueous solution of sodium selenate, and stirred at 500r / min for 10min;

[0060] 4. Weigh 1000 mg of trisodium citrate, add it to the mixed solution of chitosan nano-microspheres and sodium selenate, continue to stir and react for 3 hours to form a dark red transparent solution, and obtain red nano-selenium.

[0061] Add wetting agent Tween-20 and conventional ...

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Abstract

The invention discloses a nano selenium nutrition conditioning agent for fruit and vegetable and its preparing process which consists of, dissolving the selenium compounds into water, charging reducing agent and natural polysaccharide nano microspheres as mould plates simultaneously, mixing and reacting 1-5 hours at normal temperature, till the solution becomes deep red, then charging sizing material and nourishing ingredients.

Description

technical field [0001] The invention relates to the research and development of biological nanomaterials in the fields of plant nutrition, agricultural chemistry, agricultural biotechnology, etc., in particular to a selenium supplement nutritional regulator made by nanotechnology and a preparation method thereof. Background technique [0002] Selenium is one of the essential elements for human life. Numerous scientific studies have shown that selenium has the functions of anti-cancer, enhancing immune function, lowering blood sugar, protecting cardiovascular and cerebrovascular, preventing cataract and delaying aging, so there is a wave of selenium supplementation in the whole society. Human body selenium supplementation can be summarized into three forms: inorganic selenium supplementation, synthetic selenium supplementation and natural organic selenium supplementation. More and more attention has been paid to it because of its advantages such as high selenium supplementat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05D9/00C05G1/00
Inventor 刘选明肖苏尧薛德正童春义陈武茂
Owner HUNAN UNIV
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