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Method for preparing antioxidation gelatine membrane containing tea polyphenol nano lipidosome

A technology of nano-liposomes and tea polyphenols, which is applied in food preparation, food forming, food science and other directions, can solve the problems of biologically active substances being easily oxidized, decomposed and destroyed, and unable to fully play a role, and achieves prolonged anti-oxidation. effect of effect

Inactive Publication Date: 2009-06-24
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bioactive substances added to the film are easily oxidized, decomposed and destroyed due to the influence of light irradiation, oxygen and other factors, so that they cannot fully function for a long time

Method used

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  • Method for preparing antioxidation gelatine membrane containing tea polyphenol nano lipidosome
  • Method for preparing antioxidation gelatine membrane containing tea polyphenol nano lipidosome
  • Method for preparing antioxidation gelatine membrane containing tea polyphenol nano lipidosome

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 25 mg of tea polyphenols (purity ≥ 92%) and dissolve in 50 mL of 0.05 mol / L phosphate buffer with a pH of 7.0, add 400 mg of Tween 80, and control the system temperature at 50°C. Rapidly inject 8 mL of absolute ethanol solution dissolved with 500 mg egg yolk lecithin and 100 mg cholesterol into the pre-buffer system with a syringe, and hydrate at 50°C for 30 min. After the hydration is over, transfer it into a 250mL round-bottomed evaporating flask, evaporate the ethanol off under reduced pressure, and finally undergo probe-type ultrasonic treatment (380W, 1s on, 1s off) to obtain the tea polyphenol nanoliposome co-suspension.

[0019] Weigh 8g of gelatin into a 250mL beaker, swell with 70mL of deionized water at room temperature for 2h, add 1.33g of glycerol as a plasticizer, and then stir and dissolve at 60°C for 20min to make a gelatin solution.

[0020] Add 30mL of tea polyphenol nanoliposome co-suspension into 70mL of gelatin solution, stir and mix, ultrasoni...

Embodiment 2

[0023] Weigh 35 mg of tea polyphenols (purity ≥ 92%) and dissolve in 50 mL of 0.05 mol / L phosphate buffer solution with pH 7.0, add 400 mg of Tween 80, and control the system temperature at 50°C. Rapidly inject 8 mL of absolute ethanol solution dissolved with 500 mg egg yolk lecithin and 100 mg cholesterol into the pre-buffer system with a syringe, and hydrate at 50°C for 30 min. After the hydration is over, transfer it into a 250mL round-bottomed evaporating flask, evaporate the ethanol off under reduced pressure, and finally undergo probe-type ultrasonic treatment (380W, 1s on, 1s off) to obtain the tea polyphenol nanoliposome co-suspension.

[0024] Weigh 6g of gelatin into a 250mL beaker, swell with 70mL of deionized water at room temperature for 2h, add 1.00g of glycerol as a plasticizer, and then stir and dissolve at 60°C for 20min to make a gelatin solution.

[0025] Add 30mL of tea polyphenol nanoliposome co-suspension into 70mL of gelatin solution, stir and mix, ultra...

Embodiment 3

[0027] Weigh 40 mg of tea polyphenols (purity ≥ 92%) and dissolve in 30 mL of 0.01 mol / L phosphate buffer with a pH of 7.0, add 200 mg of Tween 80, and control the system temperature at 50°C. Rapidly inject 4 mL of absolute ethanol solution dissolved with 250 mg egg yolk lecithin and 50 mg cholesterol into the pre-buffer system with a syringe, and hydrate at 50°C for 30 min. After the hydration is over, transfer it into a 250mL round-bottomed evaporating flask, evaporate the ethanol off under reduced pressure, and finally undergo probe-type ultrasonic treatment (380W, 1s on, 1s off) to obtain the tea polyphenol nanoliposome co-suspension.

[0028] Weigh 6g of gelatin into a 250mL beaker, swell with 70mL of deionized water at room temperature for 2h, add 0.80g of glycerol as a plasticizer, and then stir and dissolve at 60°C for 20min to make a gelatin solution.

[0029] Add 30mL of tea polyphenol nanoliposome co-suspension into 70mL of gelatin solution, stir and mix, ultrasonic...

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Abstract

The invention relates to preparation of an oxidation resistant gelatin film containing a tea polyphenol nano-liposome, pertains to the application technology field of nano-liposome controlled release and oxidation resistance. The oxidation resistant gelatin film component comprises tea polyphenol nano-liposome, gelatin and glycerin. The preparation includes dissolving gelatin and glycerin into deionized water in proportion to produce a gelatin solution, charging a predetermined amount of tea polyphenol nano-liposome suspension, mixing uniformly, hypersonic de-gassing, and removing dried film spreading on the organic glass board. The prepared oxidation resistant gelatin film has oxidation resistance greatly improved comparing with the simple gelatin film phase, and oxidation resistance of the gelatin film is capable of lasting for longer time due to protection function of the liposome to the tea polyphenol and slowly-releasing of the tea polyphenol. The gelatin film can be biologically degraded, without environment pollution during application process; has functions of preventing loss of flavor substance in the food, preventing food oxidation, so as to reach the effect of anti-staling and prolonging storage period.

Description

technical field [0001] The invention discloses a preparation method of an anti-oxidation gelatin film containing tea polyphenol nano-liposome, which belongs to the technical field of nano-liposome controlled release and anti-oxidation application. Background technique [0002] Gelatin is an important natural polymer material, a product of collagen degradation, and has good biocompatibility and biodegradability. Coat the gelatin solution on the film-forming medium, and form a layer of gelatin film after drying. The gelatin film has a wide range of applications, such as seasoning bags for instant noodles, inner packaging of Chinese patent medicines, etc., and can fix drugs on gelatin. Carrier film etc. are made on the membrane. In order to improve the properties of the gelatin film, certain substances can be added to the gelatin solution before film formation, such as adding biologically active components to improve the antioxidant properties or antibacterial properties of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/30A23P1/04A23L33/10
Inventor 许时婴王璋夏书芹鲍士宝朱卫红袁博
Owner JIANGNAN UNIV
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