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Process for preparing edible bird's nest extraction used for cosmetics

A preparation process and extract technology, which is applied in the field of preparation of bird's nest extract for cosmetics, can solve the problems that the method of ultrasonic extraction and alkaline protease, the relationship between extraction process and molecular weight distribution have not been clarified, and achieve molecular weight Reasonable distribution, short production cycle and good stability

Active Publication Date: 2007-12-12
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of these processes mentioned the ultrasonic extraction method and the application of alkaline protease in the bird's nest hydrolysis process, and did not clarify the relationship between the extraction process and molecular weight distribution

Method used

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  • Process for preparing edible bird's nest extraction used for cosmetics

Examples

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Comparison scheme
Effect test

Embodiment 1

[0017] Pass the frozen and pulverized bird’s nest through a 100-mesh sieve, weigh 100g of bird’s nest powder, add 2500ml of water, extract it with ultrasonic water for 1 hour at room temperature, filter, and freeze-dry the filtrate to obtain 1.74g of powdery bird’s nest extract, with a yield of 1.74% . The molecular weight distribution of the product is determined, wherein the content above 10,000 Daltons accounts for 84.34%, and the content of 2,000-6,000 Daltons accounts for 4.38%. According to pharmacological experiments, it has excellent whitening activity and good moisturizing effect.

Embodiment 2

[0019] The frozen and pulverized bird's nest passed through a 100-mesh sieve, weighed 100g of bird's nest powder, added 2500ml of water, ultrasonically extracted for 1 hour at room temperature, then added water with a dry weight of bird's nest of 4000ml, and kept boiling for 20 minutes. Then cooled to room temperature, with 2% Na by weight 2 CO 3 Adjust the pH of the solution to 8.5, add 0.5 g of alkaline protease with an enzyme activity range of 1.5 million u / g, and hydrolyze for 1 hour under mechanical stirring and a temperature of 50°C. The hydrolyzate was inactivated at 85°C for 20 minutes. Then cool to room temperature, use 1% by weight of dilute HCl to adjust the pH value to neutral, filter, combine the filtrate after enzymolysis with the ultrasonic extract, and freeze-dry to obtain 79g of powdery bird's nest extract, with a yield of 79%. . The molecular weight distribution of the product is determined, wherein the content above 10,000 Daltons accounts for 7.2%, and t...

Embodiment 3

[0021] The frozen and pulverized bird's nest was passed through a 100-mesh sieve, weighed 100g of bird's nest powder, added 2500ml of water, ultrasonically extracted for 1 hour at room temperature, filtered, and the filtrate was discarded. Add 4000ml of water with a dry weight of bird's nest to the filter cake and keep boiling for 20 minutes. Then cooled to room temperature, with 2% Na by weight 2 CO 3 Adjust the pH of the solution to 8.5, add 0.5 g of alkaline protease with an enzyme activity range of 1.5 million u / g, and hydrolyze for 1 hour under mechanical stirring and a temperature of 50°C. The hydrolyzate was inactivated at 85°C for 20 minutes. Then cool to room temperature, adjust the pH value to neutral with 1% by weight of dilute HCl, filter, and freeze-dry the filtrate after enzymolysis to obtain 75 g of powdered bird's nest extract, with a yield of 75%. The molecular weight distribution of the product is determined, wherein the content above 10,000 Daltons accoun...

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PUM

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Abstract

The invention discloses a method for preparing cubilose extract used in cosmetics. Steps are as follows: (1) cryogenic grinding cubilose, sieving, adding water 20 times the weight of the dry cubilose, ultrasonic extracting at room temperature for 1h, filtering, (2) adding water 30 times the weight of the dry cubilose into the filter cake, boiling for 60 minutes under mechanical stirring, (3) cooling to room temperature, regualting pH to 9.8 with Na2CO3 solution, adding alkali protease 1.5% the weight of the dry cubilose, carrying out hydrolysis in water bath at 55deg.C under mechanical stirring, (4) deactivating enzyme at 85deg.C for 20min, (5) cooling to room temperature, regulating pH to neutrality with thin HCl, (6) filtering, combining the filtrate with ultrasonic extract, and freeze drying to obtain powdered cubilose extract. The invention has simple process, good extract water-solubility, high extraction yield, rational product molecular weight distribution, good wetness protection, high product whitening activity, and good product stability; and avoid the influence of boiling to the thermo instable active ingredient in hydrolysis technology. The obtained cubilose extract is suitable for using as cosmetic compounding.

Description

technical field [0001] The invention relates to a preparation process of bird's nest extract for cosmetics. Background technique [0002] Bird's nest is a nest built by swiftlets or other swallows of the same species with saliva or saliva mixed with down feathers. Elasticity and reduce wrinkles, remove acne and other functions. At present, the use of bird's nest in beauty and beauty is mostly steamed and stewed for consumption. Due to the water insolubility of bird's nest, the application of bird's nest extract in cosmetics is limited. [0003] Bird's nest contains many bioactive components such as bird's nest acid, amino acid, protein, epidermal growth factor, etc. Therefore, some researches have been carried out on the chemical composition of bird's nest at home and abroad, but they mainly focus on the extraction by precipitation, centrifugation, electrophoresis, and gel chromatography. Separation of bird's nest protein, and the composition and structure of bird's nest m...

Claims

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Application Information

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IPC IPC(8): A61K8/98A61Q19/00
Inventor 李英华吕秀阳郑兴芳梁文权潘炳雄刘秀芳
Owner ZHEJIANG UNIV
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