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Magnetic sandwiching layer structure slow-releasing type sorbic acid, and its prepn. method

A slow-release sorbic acid and sorbic acid technology, which is applied in the fields of botanical equipment and methods, animal husbandry, biocides, etc., to achieve the effects of improving bioavailability, improving targeting and improving dispersibility

Inactive Publication Date: 2007-01-10
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But there is no report of magnetic sorbic acid sustained-release dosage form based on hydrotalcite materials at present.

Method used

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  • Magnetic sandwiching layer structure slow-releasing type sorbic acid, and its prepn. method
  • Magnetic sandwiching layer structure slow-releasing type sorbic acid, and its prepn. method
  • Magnetic sandwiching layer structure slow-releasing type sorbic acid, and its prepn. method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Magnetic core MgFe 2 o 4 Preparation of Nanopowder

[0037] Weigh 8.47g Mg(NO 3 ) 2 ·6H 2 O and 6.666g Fe(NO 3 ) 3 9H 2 O and 3.29 g FeCl 2 4H 2 O was dissolved in 100ml water to form a mixed salt solution, and 6.02g NaOH and 7.43g NaOH were weighed 2 CO 3 Dissolve in 100ml of water to make a mixed alkaline solution; drop the alkaline solution into the salt solution until the pH value is equal to 6, crystallize in a water bath at 50°C for 4 hours, filter the reaction solution, wash it, and then wash it with absolute ethanol , vacuum-dried, ground into powder, and then calcined at 800°C for 4 hours in an air atmosphere with a heating rate of 10°C / min to obtain the magnetic core MgFe 2 o 4 . Sieve with a standard sieve to obtain a relatively uniform powder. The water used in the process is decarbonized deionized water.

[0038] (2) Preparation of magnetic sorbic acid intercalated zinc-aluminum hydrotalcite

[0039] Weigh Zn(NO 3 ) 2 ·6H 2 O(0.1136mo...

Embodiment 2

[0042] (1) Magnetic core NiFe 2 o 4 Preparation of Nanopowder

[0043] Weigh 10.10g of NiSO at a molar ratio of nickel / ferrous iron / ferric iron of 2:1:1 4 ·6H 2 O, 4.50g FeSO 4 ·7H 2 O and 6.40 g Fe 2 (SO 4 ) 3 ·7H 2 Dissolve O in 150ml water to make a mixed salt solution, weigh 8.00g NaOH and dissolve it in 100ml water to make a mixed alkali solution; under the protection of nitrogen, drop the alkali solution into the salt solution until the pH value is equal to 8, crystallize in a water bath at 15°C After 48 hours, the reaction solution was filtered, washed, washed with absolute ethanol, vacuum-dried, ground into powder, and then calcined at 1000°C for 2 hours in an air atmosphere with a heating rate of 10°C / min to obtain the magnetic core NiFe 2 o 4 . Sieve with a standard sieve to obtain a relatively uniform powder. The water used in the process is decarbonized deionized water.

[0044] (2) Preparation of magnetic sorbic acid intercalated zinc-aluminum hydrota...

Embodiment 3

[0048] (1) Magnetic core NiFe 2 o 4 Preparation of Nanopowder

[0049] Weigh 2.53g of NiSO at a molar ratio of nickel / ferrous iron / ferric iron of 0.5:1:1 4 ·6H 2 O, 4.50g FeSO 4 ·7H 2 O and 6.40 g Fe 2 (SO 4 ) 3 ·7H 2 Dissolve O in 150ml water to make a mixed salt solution, weigh 8.00g NaOH and dissolve it in 100ml water to make a mixed alkali solution; under the protection of nitrogen, drop the alkali solution into the salt solution until the pH value is equal to 7, crystallize in a water bath at 40°C After heating for 16 hours, filter the reaction liquid, wash it, wash it with absolute ethanol, dry it in vacuum, grind it into a powder, and then roast it at 900°C for 2 hours in an air atmosphere with a heating rate of 10°C / min to obtain a magnetic core. NiFe 2 o 4 . Sieve with a standard sieve to obtain a relatively uniform powder. The water used in the process is decarbonized deionized water.

[0050] (2) Preparation of Magnesium Aluminum Hydrotalcite Intercala...

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Abstract

An intercalated slow-releasing magnetic sorbic acid as the antiseptic is prepared through preparing the magnetic nanokernels by codeposition method, mixing them with relative salt solution, and assembling the sorbic acid in the spaces between layers of hydrotalcite by codeposition method.

Description

technical field [0001] The invention belongs to the technical field of chemical anticorrosion, and in particular provides a slow-release sorbic acid with a magnetic intercalation structure and a preparation method thereof. Background technique [0002] With the long-term use of traditional chemical preservatives, some adverse consequences produced by them while exerting antiseptic effects have gradually been recognized by people. Therefore, seeking food preservatives with wide range, high efficiency and low toxicity has become one of the hot spots in food science research. It is generally believed that an excellent food preservative should have the following characteristics: (1) It should have a good inhibitory effect on microorganisms that cause food deterioration; (2) It must be safe for consumers; , color and taste have little or no effect; (4) low price. [0003] Sorbic acid (C 6 h 7 KO 2 The structural formula is CH 3 CH=CHCH=CHCOOH) is widely used in the fields o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L3/3508A23L3/3562A01N37/06
Inventor 段雪张慧邹亢宋兆伟孟锦宏
Owner BEIJING UNIV OF CHEM TECH
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