碩士 / 國立臺灣海洋大學 / 食品科學系 / 94 / The purpose of this study is to explore the antioxidativity and rheological properties of crude polysaccharide aqueous solution of Isochrysis sp. CCMP 1324 and its application in vital moisture cream. First, using boiled water extracted crude polysaccharide of Isochrysis sp. CCMP 1324. And then the crude extracted solution were monitored its polysaccharide content, antioxidativity and rheological properties. The stability, safety and effectivity of cosmetics made from crude polysaccharide were also monitored. From the results, the reducing power, scavenging effect of DPPH radical, chelating Fe2+ effect and trolox equivalent antioxidant capacity (TEAC) of the crude polysaccharide solutions were found enhancing with the concentration increasing. After treating with pepsin or trypsin, the crude polysaccharide aqueous solution was declining tendency of antioxidativity ability. The rheological behavior of crude polysaccharide aqueous solution is pseudoplastic fluids. Increasing the solute concentration enhanced its shear thinning properties. The apparent viscosity of crude polysaccharide aqueous solution decreased and increased with increasing NaCl concentration and pH, respectively. The stability of vital moisture cream containing with or without Isochrysis sp. CCMP 1324 crude polysaccharides was stable for more a month. Based on the Daize score test, there were no erythema found in user. As increasing the Isochrysis sp. CCMP 1324 crude polysaccharides concentration enhanced the apparent viscosities and electrical capacitance decrease ratio increased.
| Identifer | oai:union.ndltd.org:TW/094NTOU5253046 |
| Date | January 2006 |
| Creators | Min-Yen Hsieh, 謝旻諺 |
| Contributors | Ching-Yu Tsao, 曹欽玉 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 72 |
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