山藥抗氧化活性之研究
Other Title
The Antioxidative Activity of Yams
Start Page
21
End Page
36
ISBN
957-02-4205-1
Date Issued
1999-03
Date
1999-03
Author(s)
曾慶瀛
余哲仁
王璧娟
劉新裕
Chin- Yin Tseng
Zer- Ran Yu
Be- Jen Wang
Sin- Yie Liu
Abstract
以本土山藥品系：台農二號、大汕二、大汕三、中國長、罐仔藷、名間二紅為原料，經冷凍乾燥後，利用溶劑：超臨界二氧化碳（SC-CO2）、體積比10：1之SC-CO2：乙醇，操作溫度40℃，壓力2000、3000、4000psi，冷凍乾燥樣品20g，進行萃取實驗。連續進行萃取實驗三次後，計算其萃取溶解度（g萃取物/LCO2）與萃取率（g萃取物／100g樣品），並分析其抗UV、抗氧化效果與維生素A、C、E、山藥皂素含量”實驗結果顯示：以壓力4O00psi，溫度40oC，溶劑SC-CO2＋乙醇為溶劑，進行實驗1小時後，山藥萃取率達到8-14%。此實驗條件下之10%萃取液的抗氧化率約90%。
The local varieties of yams in Taiwan: D. alata L. (Tainung #2), D. alata L. (Darsan #2), D. alata L. (Darsan #3), D. alata L. (China), D. hispida Dennst., and D. alata L. purpurea (Roxb.) M. Pouch was chosen as the raw materials for this study. The 20g of freeze-drying samples were extracted three times by the solvent of supercritical carbon dioxide (SC-C02) or the solvent of SC-C02 / ethanol (10/1 by volume) at 40℃ and pressures 2000, 3000 and 4000 psi. The experimental data were then calculated as the extracted index of solubility (g extract/L CO2) and yield (g extract/100g sample). The extracts were experimentally measured their anti-ultraviolet activity and antioxidant effect. The extracts were also analyzed their vitamin A, C, E and disogenin. The results showed that 8- 1.4% yield was extracted from freeze-drying yam powders by using the operating pressure 4000 psi , operating temperature 40℃ , operating time lhour, and the solvent of SC-CO2 / ethanol. The extract had ca. 90% of antioxidant activity using the above experimental conditions.
Event(s)
1999藥用植物之開發與利用研討會
Proceedings of the Symposium on Development and Utilization of Medicinal Plants 1999
Publisher
農業試驗所
Type
book part
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