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Preparation method and application of selenium-carrying chitosan ultrafine particle meat improver

A technology of meat quality improver and ultrafine particles, which can be applied in application, animal feed, additional food elements, etc., can solve the problems of low safety, low adsorption efficiency, uneven distribution, etc., and achieve improvement of meat color, increase of specific surface area, particle size The effect of uniform diameter distribution

Inactive Publication Date: 2012-11-14
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of method is relatively simple for the treatment of chitosan, and it is easy to produce defects of low adsorption efficiency and uneven distribution for the adsorption of trace elements such as selenium with a narrow safe dosage, and the safety is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1, a kind of preparation method of selenium-loaded chitosan ultrafine particle meat quality improver, carries out following steps successively:

[0028] 1), at 25 DEG C, under magnetic stirring (200rpm / min), in the acetic acid solution of mass concentration 0.5%, add the chitosan that molecular weight is 2kDa, be mixed with chitosan acid solution, chitosan is in chitosan acid The mass concentration in the solution is 1%.

[0029] 2), with the sodium polyphosphate aqueous solution of mass concentration 0.1%, drop in the chitosan acid solution under magnetic stirring condition (200rpm / min), the volume of sodium polyphosphate aqueous solution is 2 of the chitosan acid solution volume %; The dropping speed is controlled at 20-40 drops / min. After the dropping is completed, it is fully stirred for 10 minutes to obtain an emulsion suspension.

[0030] 3) Using 0.5% acetic acid solution in mass concentration to adjust the emulsion suspension so that its pH value is ...

Embodiment 2

[0047] Embodiment 2, a kind of preparation method of selenium-loaded chitosan ultrafine particle meat quality improver, carries out following steps successively:

[0048] 1), at 40 DEG C, under magnetic stirring (200rpm / min), in the acetic acid solution of mass concentration 1%, add the chitosan that molecular weight is 10kDa, be mixed with chitosan acid solution, chitosan is in chitosan acid The mass concentration in the solution is 3%.

[0049] 2), the sodium polyphosphate aqueous solution of mass concentration 0.2%, drips in the chitosan acid solution under magnetic stirring condition (200rpm / min), the volume of sodium polyphosphate aqueous solution is 1.5 of the chitosan acid solution volume %; The dropping speed is controlled at 20-40 drops / min. After the dropping is completed, fully stir for 8 minutes to obtain an emulsion suspension.

[0050] 3) Using 1% acetic acid solution in mass concentration to adjust the emulsion suspension so that its pH value is 4.0; thereby fo...

Embodiment 3

[0064] Embodiment 3, a kind of preparation method of selenium-loaded chitosan ultrafine particle meat quality improver, carries out following steps successively:

[0065] 1), at 50 DEG C, under magnetic stirring, in the hydrochloric acid solution of mass concentration 2%, add the chitosan that molecular weight is 80kDa, be mixed with chitosan acid solution, the mass concentration of chitosan in chitosan acid solution 5%.

[0066] 2), with the sodium polyphosphate aqueous solution of mass concentration 0.5%, drop in the chitosan acid solution under magnetic stirring condition (200rpm / min), the volume of sodium polyphosphate aqueous solution is 1% of the chitosan acid solution volume %; The dropping rate is controlled at 20-40 drops / min, after the dropwise addition is completed, stir thoroughly for 5 minutes to obtain an emulsion suspension.

[0067] 3), using a hydrochloric acid solution with a mass concentration of 2% to adjust the shell emulsion suspension so that its pH val...

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PUM

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Abstract

The invention discloses a preparation method and application of a selenium-carrying chitosan ultrafine particle meat improver. The preparation method comprises the following steps of: 1) adding chitosan into acid solution to obtain chitosan acid solution; 2) dripping aqueous solution of sodium polyphosphate into the chitosan acid solution with magnetic stirring, stirring, and obtaining milky suspension; 3) regulating the pH value of the milky suspension to be between 3 and 5 so as to form particle emulsion; 4) performing centrifugal separation on the particle emulsion to obtain particles, adding the particles into selenium salt solution, regulating the pH value of the solution to be between 4.0 and 6.0, performing room temperature reaction for 2 to 10 hours, and obtaining emulsion; 5) regulating the pH value of the emulsion to be between 7.0 and 9.0, washing, filtering or performing centrifugal dehydration, and collecting a solid product; and 6) drying and crushing the solid product, and thus obtaining the selenium-carrying chitosan ultrafine particle meat improver. The selenium-carrying chitosan ultrafine particle meat improver is used as a feed additive of livestock and poultry or aquatic animals.

Description

technical field [0001] The invention relates to a preparation method and application of a selenium-loaded chitosan ultrafine particle meat quality improver. Background technique [0002] Selenium is one of the essential trace elements for animals, and plays an important role in animal growth, reproduction, immunity, and anti-oxidative stress. About 72% of my country's areas are low selenium or selenium deficient areas, which cannot meet the normal physiological needs of animals. Therefore, supplementing selenium in feed has become a necessary measure. [0003] The nutrition of selenium for animals requires a dose-effect range. Within this range, selenium has a nutritional effect on animals, while outside this range, it will cause selenium deficiency or chronic and acute poisoning. Selenium has a very narrow safety margin between optimal and toxic concentrations. At present, inorganic selenium-sodium selenite is basically used as a selenium source supplement in feed, but t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K1/16A23K20/163
Inventor 王敏奇叶珊珊王超杜勇杰陶文静
Owner ZHEJIANG UNIV