Rheological properties of Brasenia schreberi Gmel mucilage solution and its application on cosmetic
碩士 === 國立臺灣海洋大學 === 食品科學系 === 92 === Abstract The objectives of this study are to explore the effects of shear rate, solute concentration, solution temperature, NaCl concentration, solution pH and shearing time on the rheological properties of different concentrations solution of the mucilage of...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2004
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| Online Access: | http://ndltd.ncl.edu.tw/handle/06280317941461061658 |
| Summary: | 碩士 === 國立臺灣海洋大學 === 食品科學系 === 92 === Abstract
The objectives of this study are to explore the effects of shear rate, solute concentration, solution temperature, NaCl concentration, solution pH and shearing time on the rheological properties of different concentrations solution of the mucilage of Brasenia schreberi and to explore the effects of using the mucilage solution to replace moisture agents in moisture mask and vital moisture cream formula on rheological properties, water holding capacity of moisture mask and vital moisture cream thus prepared. The results obtained are as follows:
The rheological behavior of the mucilage solution of Brasenia schreberi are pseudoplastic fluids. Increasing the solute concentration enhanced shear thinning properties of the mucilage solution. The apparent viscosity of different concentrations solution of the mucilage of Brasenia schreberi decreased with increasing solution temperature, also decreased with increasing NaCl concentration in the solution. The apparent viscosity increased with increasing solution pH. Effect of solution pH on the apparent viscosity decreasing rate magnified with increasing the concentration of mucilage solution used. The apparent viscosity of the mucilage solution didn’t change with shearing time.
Increasing in shear stresses and the apparent viscosity decreasing rates of moisture masks and vital moisture cream magnified with increasing the concentration of mucilage solution. The safety tests resulted in no erythema based on the Daize score test. The products pH are between 6.0-6.4.The ability of water holding capacity of moisture mask and vital moisture cream increased with the increasing concentration of mucilage solution of Brasenia schreberi used and are better than control.
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