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Application of nostoc polysaccharide in nutritional humidity-preserving type cosmetic

A technology of Nostoc polysaccharides and cosmetics, applied in the application field of Nostoc polysaccharides in nutritional and moisturizing cosmetics

Inactive Publication Date: 2010-02-17
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the research on the moisture absorption and moisturizing properties of Nostoc polysaccharides and its application in cosmetics at home and abroad.

Method used

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  • Application of nostoc polysaccharide in nutritional humidity-preserving type cosmetic
  • Application of nostoc polysaccharide in nutritional humidity-preserving type cosmetic
  • Application of nostoc polysaccharide in nutritional humidity-preserving type cosmetic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: Determination of moisture absorption / moisturizing effect of Nostoc polysaccharide

[0036] 1.1 Determination of hygroscopicity of Nostoc polysaccharide by conventional gravimetric method

[0037] Weigh 100 mg of dried Nostoc polysaccharide (Auricularia polysaccharide or Gexianmi polysaccharide), put it in a plate, put the plate into a sealed container filled with water, and make the Nostoc polysaccharide absorb water. After 24 hours, the polysaccharide was taken out and quickly weighed, and the moisture absorption rate of the sample was calculated according to the above formula (1) according to the weight difference of the polysaccharide before and after the experiment.

[0038]The experiment was repeated three times, and urea and chitosan were used as controls. The results are shown in Table 1-1. The RSD values ​​of each experimental group were all lower than 0.1, indicating that the accuracy of the experiment was high. The order of moisture absorption r...

Embodiment 2

[0046] Embodiment 2: Hygroscopic effect of Nostoc polysaccharide under fixed humidity conditions

[0047] 2.1 Determination of the hygroscopic effect of Nostoc polysaccharides at a relative humidity of 43%

[0048] Accurately weigh 100 mg of dry nostoc polysaccharide powder at room temperature and place it in a small weighing bottle, and use the same mass of dry chitosan and urea as controls. Put polysaccharide, chitosan, urea into R.H.43% airtight box immediately after weighing. The experiment was set up with 3 repetitions. Weigh each sample at 1h, 2h, 4h, 8h, 12h, and 24h, and the weighing results are shown in Table 2-1. According to the weight changes of polysaccharides and reference substances, calculate the moisture absorption rate according to formula (1). The change curve of the moisture absorption rate of the three substances is shown in figure 1 , within 24 hours, both the polysaccharide and the reference substance exhibited a certain hygroscopicity, and within 0 t...

Embodiment 3

[0057] Embodiment 3: Moisturizing effect of Nostoc polysaccharide under fixed humidity conditions

[0058] 3.1 Determination of moisturizing effect of Nostoc polysaccharide at 43% relative humidity.

[0059] Accurately weigh 100 mg nostoc polysaccharide at room temperature and place it in a small weighing bottle, with chitosan and urea of ​​the same mass as controls. Put the weighed sample into a sealed box filled with 500mL of water and store it for 24 hours to make it absorb water in a humid environment. The next day, each sample was taken out and weighed, and then put into a R.H.43% airtight box for dehydration. Three repetitions were set up in the experiment, and the weight of each sample was weighed at 1h, 2h, 4h, 8h and 12h respectively. The weighing results are shown in Table 3-1. According to the weight changes of polysaccharides and reference substances, the moisture retention rate was calculated according to the following formula (3):

[0060] Moisture retention ra...

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Abstract

The invention discloses an application of nostoc polysaccharide in a nutritional humidity-preserving type cosmetic. Invitro weight method detection proves that the nostoc polysaccharide has the favorable effects of moisture absorption and humidity preserving; by taking urea and water as contrasts, an attenuated total reflection Fourier infrared spectrum method is adopted to measure the corneous layer of a rat which is processed by the nostoc polysaccharide, thereby proving that the polysaccharide obviously increases the water content of the corneous layer of the rat and has superior humidity-preserving effect and favorable development potential when being applied to the cosmetic.

Description

technical field [0001] The invention relates to the application of nostoc polysaccharide in nutritional and moisturizing cosmetics. Background technique [0002] Moisturizer is very important to cosmetics. Almost all cosmetic formulations are inseparable from humectant. It is one of the basic components of cosmetics. In addition, the effect of moisturizer itself is very important for the function and quality of cosmetics. It plays a vital role. With the improvement of people's quality of life, more and more people begin to pay attention to their skin care, and people have a new understanding of skin moisturizing. They are no longer satisfied with the oily skin care in the past, but prefer refreshing and hydrating moisturizing At the same time, they have a soft spot for multi-functional cosmetics that can resist external dust, viruses and other adverse environmental factors and improve skin health; and the concept of "beauty comes from nature, beauty comes from health" is gr...

Claims

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Application Information

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IPC IPC(8): A61K8/73A61Q19/00
Inventor 黄泽波许娟刘永梅李海峰刘永平李章伟
Owner WUHAN UNIV
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