Biological organic selenium earthworm selenium and preparation method thereof

A technology of organic selenium and earthworms, which is applied in the field of livestock and poultry breeding, can solve the problems that sodium selenite is easy to remain and pollute the environment, the addition of low concentration cannot be achieved, and the industrialization of earthworm selenium enrichment is difficult, etc., so as to achieve short production cycle and safe High performance and high conversion rate

Active Publication Date: 2022-05-13
赣州市畜牧水产研究所
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Problems solved by technology

The present invention aims to solve the problem that in the prior art, sodium selenite is added to the raw materials for earthworm breeding to breed selenium-enriched earthworms to produc...

Method used

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  • Biological organic selenium earthworm selenium and preparation method thereof
  • Biological organic selenium earthworm selenium and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1: Use cow dung, bean dregs, and beer's grains to prepare earthworm feed and cultivate earthworms. The mass fraction of cow dung, bean dregs, and beer's grains is 35:28:37. Ferment for 1.5 days, breed for 15 to 20 days, and collect earthworms by phototactic method.

[0033] Step 2: Add 1800 mg / kg sodium selenite aqueous solution of earthworm body weight to the earthworms, the mass fraction ratio of earthworms and sodium selenite aqueous solution is 90:10, wherein the analytical purity of sodium selenite is more than 98%, and the reaction time is 0.75h at 31°C .

[0034] Step 3: Earthworm enzymatic hydrolysis was started with earthworm enzyme at 57.8°C for 0.7h; enzymatic hydrolysis at 48.5°C was liquefied for 3.8 h, and enzymatic hydrolysis was continued at 36.5°C for 22h.

[0035] Step 4: purify earthworm selenium, cool earthworm selenium to room temperature 26°C, filter three times with double-layer gauze cloth, take the supernatant, and discard the residue in th...

Embodiment 2

[0039] The difference between this example and Example 1 is that: Step 2: after adding the sodium selenite aqueous solution to the earthworms, act at 37° C. for 0.20 h.

Embodiment 3

[0041] The difference between this embodiment and embodiment 1 is: after the sodium selenite aqueous solution is added to the earthworms in the second step, the pre-action is not performed, and the third step is directly entered.

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Abstract

The invention discloses biological organic selenium earthworm selenium and a preparation method thereof. The method aims at overcoming the defects that an existing biological selenium product is low in organic selenium proportion, poor in safety, single in function, complex in production process, long in period and the like, and solving the problems that a traditional selenium-rich earthworm breeding method is long in earthworm selenium preparation period and low in efficiency. The method comprises the following steps: adding 1500mg/kg-2000mg/kg of a sodium selenite aqueous solution into earthworms, then carrying out enzymolysis through earthworm enzyme to prepare an earthworm selenium primary product, then adding 500mg/kg-1000mg/kg of the sodium selenite aqueous solution again to prepare an earthworm selenium medium product, and then adding earthworm enzymatic hydrolysate to obtain an earthworm selenium final product. The biological organic selenium earthworm selenium developed by the invention is short in production cycle, simple and convenient, the total selenium content is greater than 100mg/kg, the organic selenium content is greater than 80mg/kg, the earthworm selenium is prepared by earthworm enzymolysis, an initial product can be obtained within 21h at the soonest, and the method is suitable for large-scale standardized production.

Description

technical field [0001] The invention relates to the technical field of livestock and poultry breeding, in particular to a biological organic selenium earthworm selenium and a preparation method thereof. Background technique [0002] The production of selenium-enriched food is not only relying on selenium-enriched areas to produce natural selenium-enriched food, but the most important thing is to produce standardized selenium-enriched food through foreign aided selenium-enhanced technology; currently exogenous selenium products include organic selenium and inorganic selenium, given that the safety range of inorganic selenium is narrow , easy to be poisoned and pollute the environment, basically do not use inorganic selenium (sodium selenite) for exogenous selenium fortification technology; organic selenium is the first choice for exogenous selenium fortification technology, currently organic selenium products mainly include yeast selenium, selenomethionine , nano-selenium, se...

Claims

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Application Information

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IPC IPC(8): A23K20/20A23K10/14A23K10/20A23K50/75A01K67/033
CPCA23K20/30A23K10/14A23K10/20A23K50/75A01K67/0332A23V2002/00A23V2250/1626
Inventor 雷小文吴丽娟郭海宁郭伟李建军张强叶彩云谭东海谢华亮
Owner 赣州市畜牧水产研究所
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