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Chitosan oligosaccharide/cassava starch composite zinc propionate solid and preparation method thereof

A technology of oligomeric chitosan and compound zinc propionate, which is applied in the field of feed, can solve the problems of reducing the balance effect of the overall additive, the anti-mildew effect can not meet the application requirements, and the anti-mildew effect is reduced, so as to increase the stability of the anti-mildew effect. , Improve the effective time of mildew prevention and improve the effect of dispersibility

Active Publication Date: 2020-08-14
上海邦成生物工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual production and application, there are still the following deficiencies: 1) The effective period of anti-mold is short, and the anti-mold effect decreases linearly with time, lacking the stability of anti-mold effect; 2) Anti-mold effect and side effects

Method used

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  • Chitosan oligosaccharide/cassava starch composite zinc propionate solid and preparation method thereof
  • Chitosan oligosaccharide/cassava starch composite zinc propionate solid and preparation method thereof
  • Chitosan oligosaccharide/cassava starch composite zinc propionate solid and preparation method thereof

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Effect test

Embodiment 1

[0030] Embodiment 1: the preparation of chitosan oligosaccharide / tapioca starch composite zinc propionate solid

[0031] 1. Preparation of chitosan oligosaccharides

[0032] According to the ratio of parts by weight, 100 parts by weight of chitosan was added to 180 parts by weight of 0.35mol / L citric acid, after 45°C insulation for 30min, ultrasonic treatment at 65°C for 60min, the ultrasonic frequency was 300kHz; after cooling to 30°C , adding a hydrogen peroxide solution with a concentration of 0.35mol / L to adjust the pH to 7; concentrate and suction filter at a temperature of 2°C, use acetone to separate out the precipitate, and dry the precipitate at 80°C to obtain oligomeric chitosan; For example, 100 parts by weight of chitosan oligosaccharide was added to 250 parts by weight of absolute ethanol, centrifuged for 10 minutes to prepare a chitosan oligosaccharide solution, and stored at 4°C for use.

[0033] 2. Preparation of Microporous Tapioca Starch

[0034] According ...

Embodiment 2

[0046] Embodiment 2: the preparation of chitosan oligosaccharide / tapioca composite zinc propionate solid

[0047] 1. Preparation of chitosan oligosaccharides

[0048] According to the ratio of parts by weight, 100 parts by weight of chitosan is added to 250 parts by weight of 0.35mol / L citric acid, after 30 minutes of heat preservation at 45°C, ultrasonic treatment at 65°C for 60 minutes at an ultrasonic frequency of 300kHz; after cooling to 30°C , adding a hydrogen peroxide solution with a concentration of 0.35mol / L to adjust the pH to 7; concentrate and suction filter at a temperature of 2°C, use acetone to separate out the precipitate, and dry the precipitate at 80°C to obtain oligomeric chitosan; For example, 100 parts by weight of chitosan oligosaccharide was added to 250 parts by weight of absolute ethanol, centrifuged for 10 minutes to prepare a chitosan oligosaccharide solution, and stored at 4°C for use.

[0049] 2. Preparation of Microporous Tapioca Starch

[0050]...

Embodiment 3

[0062] Embodiment 3: the preparation of chitosan oligosaccharide / tapioca composite zinc propionate solid

[0063] 1. Preparation of chitosan oligosaccharides

[0064] According to the ratio of parts by weight, 100 parts by weight of chitosan is added to 290 parts by weight of 0.35mol / L citric acid, after 30 minutes of heat preservation at 45°C, ultrasonic treatment at 65°C for 60 minutes at an ultrasonic frequency of 300kHz; after cooling to 30°C , adding a hydrogen peroxide solution with a concentration of 0.35mol / L to adjust the pH to 7; concentrate and suction filter at a temperature of 2°C, use acetone to separate out the precipitate, and dry the precipitate at 80°C to obtain oligomeric chitosan; For example, 100 parts by weight of chitosan oligosaccharide was added to 250 parts by weight of absolute ethanol, centrifuged for 10 minutes to prepare a chitosan oligosaccharide solution, and stored at 4°C for use.

[0065] 2. Preparation of Microporous Tapioca Starch

[0066]...

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Abstract

The invention relates to a chitosan oligosaccharide/cassava starch composite zinc propionate solid and a preparation method thereof. The chitosan oligosaccharide/cassava starch composite zinc propionate solid is prepared from microporous zinc propionate powder and oligochitosan filled cassava starch intermediate solids, the oligochitosan filled cassava starch intermediate solids are prepared froma chitosan oligosaccharide solution and microporous cassava starch, and the microporous zinc propionate powder is prepared from a basic zinc carbonate solution, a propionic acid solution, a sodium hydroxide solution and polyethylene glycol. The chitosan oligosaccharide solution is prepared from chitosan oligosaccharide and absolute ethyl alcohol; the microporous cassava starch is prepared from deionized water, cassava starch and citric acid; the molecular weight of the chitosan oligosaccharide is not greater than 4250; the average particle size of the micropore zinc propionate is 0.2 mu m-3. 2mu m, the average pore size of the micropores is 850 nm-920 nm, and the volume ratio of the micropores is 86%-92%; the average particle size of the microporous cassava starch is 53 nm to 132 nm, theaverage pore size of micropores is 5 nm to 18 nm, and the volume ratio of the micropores is 82% to 93%, so that the dispersity can be remarkably improved, and effective combination of various functional source additives is realized; the effective action time of mildew prevention is prolonged, and the stability of the mildew prevention effect is improved.

Description

technical field [0001] The invention belongs to the technical field of feed, and in particular relates to a chitosan oligosaccharide / tapioca starch composite zinc propionate solid and a preparation method thereof. Background technique [0002] Feed with high moisture content is susceptible to mildew due to the influence of the environment during production, transportation, storage and use. Especially in high-temperature and humid seasons, the feed often becomes moldy and agglomerated, producing mold, causing feed failure, and causing livestock and poultry disease. Production and immune function decline, causing acute or chronic poisoning of livestock and poultry in severe cases, and even canceration and deformity, directly endangering the health of livestock, poultry and human beings. Therefore, doing a good job of anti-mildew treatment of feed is an important procedure to ensure feed safety. Sodium diacetate, calcium propionate and citric acid are the most commonly used fe...

Claims

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Application Information

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IPC IPC(8): C08L5/08C08L3/02C08L71/02C08K5/098
CPCC08L5/08C08L2205/03C08L3/02C08L71/02C08K5/098Y02P20/54
Inventor 陆克文张微微
Owner 上海邦成生物工程有限公司
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