碩士 / 國立澎湖科技大學 / 海洋創意產業研究所 / 96 / In the present study, seven edible seaweeds including Enteromorpha
intestinalis, Monostorma nitidum, Ulva lactuca, Dictyopteris
undulate, Sargassum hemiphyllum var. chinense, Laurencia intermedia
and Porphyra dentate, were found to be rich in polysaccharide,
polyphenols, and also have high antioxidant activities.
Hot-water, sterilization, homogenization, lyophilization and enzyme
extraction, have significant effects on the antioxidant activity. The
antioxidant activity were analyzed by the methods such as DPPH scavening
activity, reducing power, chelating power, and SOD-like activity.
In this study, S. hemiphyllum var. chinense exhibited strong
antioxidant activity in DPPH (76.6-98.6%), reducing power (1.9-2.9), and
SOD-like activity (66.9-97.3 %). After enzyme digestion, M. nitidum treated
with Viscozyme was found to have the highest reducing power（2.88）.DPPH
scavening activities of the S. hemiphyllum var. chinense treated
with Celluclast carbohydrate hydrolyses and U. lactuca treated with
Everlase proteolytic hydrolyses, were 92.2 % and 98.8%,
respectively. Above mentioned all the enzyme
extracts, possessed higher antioxidant activities than those of the other
seaweeds extracts and the control.
Therefore, seaweed extracts with desired antioxidant properties,
could be used to develop seaweed products and increase value of seaweeds.
| Identifer | oai:union.ndltd.org:TW/096NPHT8833005 |
| Date | January 2008 |
| Creators | Hui-Chiu Lin, 林慧秋 |
| Contributors | Tsai-Shin Chiu, 邱采新 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 102 |
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