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Preparation method of plant selenium enrichment enhancer

A fortifier and selenium-enriched technology, which is applied in the field of preparation of plant selenium-enriched fortifiers, can solve problems such as harming human health, poisonous crops, and inorganic selenium residues, and achieve the effects of increased production, low production costs, and high conversion rates

Active Publication Date: 2015-05-13
QINGDAO PENGYANG BIOLOGICAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Many selenium-enriched crop products on the market mostly provide selenium element by adding sodium selenite in fertilizer. Sodium selenite is inorganic selenium, which is highly toxic. Excessive selenium will have a toxic effect on crops; and inorganic selenium Residues can also endanger human health

Method used

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  • Preparation method of plant selenium enrichment enhancer

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Effect test

Embodiment 1

[0029] Embodiment 1: Preparation of selenium-enriched enhancer for wheat and rice plants

[0030] (1) Degradation of carrageenan: 1.2kg of carrageenan is formulated into a 1.6% sol at 80°C, and 1271ml of 6mol / L hydrochloric acid is added under stirring to make the molar concentration of hydrochloric acid in the solution about 0.1mol / L. Reaction at low temperature for 3h to obtain small molecule carrageenan with a molecular weight of 300-1000;

[0031] (2) Selenization reaction: Add 0.5kg sodium selenite and 1.0kg calcium nitrate to the carrageenan solution, heat to 70°C, and react at constant temperature for 8 hours to generate small molecule selenized carrageenan;

[0032] (3) Centrifuge to remove CaSO 4 : Centrifuge the above reaction solution to remove CaSO 4 ;

[0033] (4) Neutralize the acidic solution: adjust the pH to 7 with KOH, and stir to promote the reaction;

[0034] (5) Nanofiltration membrane filtration: Filtrate with a nanofiltration membrane with a molecula...

Embodiment 2

[0036] Embodiment 2: the preparation of vegetable plant selenium-enriched fortifier

[0037] (1) Degradation of carrageenan: 1.0kg of carrageenan is made into 1% sol at 80°C, and 3896ml of 8mol / L hydrochloric acid is added under stirring to make the molar concentration of hydrochloric acid in the solution about 0.3mol / L. Reaction at low temperature for 4h to obtain small molecule carrageenan with a molecular weight of 300-1000;

[0038] (2) Selenization reaction: Add 0.73kg of selenous acid and 1.33kg of calcium chloride to the carrageenan solution, heat to 65°C, and react at constant temperature for 10 hours to generate selenized polysaccharide compounds;

[0039] (3) Centrifuge to remove CaSO 4 : Centrifuge the above reaction solution to remove CaSO 4 ;

[0040] (4) Neutralize the acidic solution: adjust the pH to 8 with KOH, and stir to promote the reaction;

[0041] (5) Nanofiltration membrane filtration: Filtrate with a nanofiltration membrane with a molecular weight ...

Embodiment 3

[0043] Embodiment 3: Preparation of tea plant selenium enrichment enhancer

[0044] (1) Degradation of carrageenan: 1.5kg of carrageenan is formulated into a 1.8% sol at 80°C, and 4900ml of 9mol / L hydrochloric acid is added under stirring to make the molar concentration of hydrochloric acid in the solution about 0.5mol / L. Reaction at low temperature for 4.5h to obtain small molecule carrageenan with a molecular weight of 300-1000;

[0045](2) Selenization reaction: add 0.63kg sodium selenite and 1.25kg calcium nitrate to the carrageenan solution, heat to 55°C, and react at constant temperature for 12 hours to generate small molecule selenized carrageenan;

[0046] (3) Centrifuge to remove CaSO 4 : Centrifuge the above reaction solution to remove CaSO 4 ;

[0047] (4) Neutralize the acidic solution: adjust the pH to 6 with KOH, and stir to promote the reaction;

[0048] (5) Nanofiltration membrane filtration: Filtrate with a nanofiltration membrane with a molecular weight c...

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Abstract

The invention discloses a preparation method of a plant selenium enrichment enhancer. The preparation method comprises the following steps of degrading carrageenan, reacting with seleninic acid or selenite so as to obtain the plant selenium enrichment enhancer taking selenium carrageenan as a selenium source. The preparation method is characterized in that HC1 replaces HNO3 to degrade carrageenan so that micromolecule carrageenan with the molecular weight lower than 1000 can be obtained, and a nano filtration membrane is used for filtering to control the proportion of carrageenan products with micromolecular weight; meanwhile, calcium salt is adopted for replacing barium salt to act as a catalyst of de-sulfation, and participates into the reaction to prevent of the use of the toxic barium salt. The raw material carrageenan of the plant selenium enrichment enhancer is extracted from seaweed, and is easily available; moreover, the preparation technology is simple, is easy to operate, is high in safety, and is low in production cost; the modular weight of the prepared product is below 1000; the plant selenium enrichment enhancer is high in activity, and is easy absorption and utilization by plants.

Description

technical field [0001] The invention relates to a preparation method of a plant selenium-enriched enhancer, in particular to a preparation method of a plant selenium-enriched enhancer using selenized carrageenan as a selenium source. Background technique [0002] Selenium is an essential trace element for humans and animals. It is an important component of some antioxidant enzymes (glutathione peroxidase) and selenium-P protein, and plays an important role in human life activities. People can achieve the purpose of improving the body's immunity, disease resistance and delaying aging by supplementing selenium. However, the selenium element in the human body is mainly absorbed through food, and the selenium content in the existing edible food is relatively low. Therefore, it is possible to increase the selenium intake of the human body by making the crop products rich in selenium, thereby playing the role of detoxification, anti-cancer, calcium supplementation, and treatment ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N55/00A01P21/00
Inventor 车勇孙春玲潘惟谦张银萍
Owner QINGDAO PENGYANG BIOLOGICAL ENG
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