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A kind of thymol microcapsule based on starch wall material and preparation method thereof

A technology of thymol and microcapsules is applied in the field of preparation of high-purity V-type starch carriers, can solve the problems of decreased V-type crystalline content, unfavorable V-type starch loading, etc., and achieves short time consumption, simple equipment and preparation process, and high technology. easy effect

Active Publication Date: 2021-07-13
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of these will lead to a decrease in the V-type crystal content, which is not conducive to the loading of V-type starch on guest molecules.

Method used

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  • A kind of thymol microcapsule based on starch wall material and preparation method thereof
  • A kind of thymol microcapsule based on starch wall material and preparation method thereof
  • A kind of thymol microcapsule based on starch wall material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Preparation of high-purity V-type starch

[0041] a) Disperse 10 g of waxy cornstarch in 200 mL of distilled water, stir and heat in a boiling water bath for 60 min; cool and keep at 55 ° C, add 0.5 g of pullulanase (purchased from Sigma-Aldrich Company), stir, and carry out enzymatic hydrolysis reaction for 24 h , to obtain the debranched starch liquid, and place it in a rotary evaporator, and concentrate to 100mL;

[0042] b) treating the concentrated debranched starch solution in step a) at 170°C for 30 minutes;

[0043] c) Cool the debranched starch solution obtained in step b) to 80°C, add the debranched starch liquid dropwise to 5 times the volume of absolute ethanol, then centrifuge, dry in an oven at 50°C for 3 hours, and pulverize to obtain Type V starch.

[0044] (2) Microcapsules prepared by embedding thymol in V-type starch:

[0045] Put 2g V-type starch and 0.2g thymol in a mortar, manually grind the mixed sample at an average speed of 90r / min for 8m...

Embodiment 2

[0050] (1) Preparation of high-purity V-type starch

[0051] a) Disperse 15g of waxy cornstarch in 150mL of distilled water, stir and heat in a boiling water bath for 40min; cool and keep at 55°C, add 0.4g of pullulanase, stir, and carry out enzymatic hydrolysis reaction for 24h to obtain debranched starch liquid, and Put it in a rotary evaporator and concentrate to 100mL;

[0052] b) treating the concentrated debranched starch solution in step a) at 160° C. for 30 minutes;

[0053] c) Cool the debranched starch solution obtained in step b) to 60° C., add 4 times the volume of absolute ethanol dropwise to the debranched starch solution, then centrifuge, freeze-dry, and pulverize to obtain high-purity V-type starch.

[0054] (2) Microcapsules prepared by embedding thymol in V-type starch:

[0055] Put 5g V-type starch and 0.5g thymol in a mortar, manually grind the mixed sample at an average speed of 60r / min for 5min, put it into a ziplock bag and shake it fully for 2min, and...

Embodiment 3

[0058] (1) Preparation of high-purity V-type starch

[0059] a) Disperse 12g of waxy cornstarch in 240mL of distilled water, stir and heat in a boiling water bath for 60min; cool and keep at 55°C, add 0.6g of pullulanase, stir, and carry out enzymatic hydrolysis reaction for 24h to obtain debranched starch liquid, and Concentrate it in a rotary evaporator to 80 mL;

[0060] b) treating the concentrated debranched starch solution in step a) at 150° C. for 30 minutes;

[0061] c) Cool the debranched starch solution obtained in step b) to 80° C., add 4 times the volume of absolute ethanol dropwise to the debranched starch solution, then centrifuge, naturally air-dry, and pulverize to obtain high-purity V-type starch.

[0062] (2) Microcapsules prepared by embedding thymol in V-type starch:

[0063] Put 3g V-type starch and 0.3g thymol in a mortar, manually grind the mixed sample at an average speed of 80r / min for 6min, put it into a ziplock bag and shake it fully for 3min, and ...

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Abstract

The invention discloses a thymol microcapsule based on starch wall material and a preparation method thereof, comprising the following steps: (1) dispersing starch in water to prepare starch milk, stirring and heating in a boiling water bath; adjusting temperature, adding pullulanase, Stir, carry out enzymatic hydrolysis reaction, obtain the debranched starch solution, and concentrate it; treat the debranched starch concentrate obtained at high temperature; then cool, fully mix the debranched starch solution and ethanol for alcohol precipitation, then centrifuge, dry, and pulverize , to obtain V-type starch; (2) Fully mix V-type starch and thymol, compound in a closed reaction kettle at 70-90°C for 2-4 hours, then take out the sample, wash it, centrifuge, dry, and pulverize to obtain a white powder shaped products. The V-type crystal of the starch carrier prepared by the invention has high purity, high embedding rate of thymol, simple process, short time consumption and low cost.

Description

technical field [0001] The invention belongs to the fields of food and chemical industry, and relates to a method for preparing thymol microcapsules of starch wall materials, in particular to the preparation of a high-purity V-type starch carrier and its method for loading thymol. Background technique [0002] Flavor / aroma components have been widely used in food and daily chemical industry. Thymol extracted from thyme is one of the very effective antioxidant and antibacterial agents in natural essential oils. Due to its remarkable antibacterial, antioxidative and antimutagenic properties, and non-toxic and harmless, thymol is widely used as a spice, flavoring agent or natural preservative in the food, medical and cosmetic industries. However, high volatility and low water solubility make it less efficient to use during processing and application. In order to limit the degradation or loss of thymol during storage and processing, it is urgent to develop new and efficient en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/02C12P19/16C12P19/04
CPCB01J13/02C12P19/04C12P19/16
Inventor 黄强高晴张斌扶雄
Owner SOUTH CHINA UNIV OF TECH
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