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頁籤選單縮合
題 名 | Photon Correlation Spectroscopy Studies of the Radial Characterization of DOPC Vesicles in Mediums=藉光子相關函數光譜學研究二油酸磷脂醯膽汁鹼液胞在介質中之粒徑特質 |
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作 者 | 林昌立; 楊作川; 黃正雄; | 書刊名 | 界面科學會誌 |
卷 期 | 19:3 1996.09[民85.09] |
頁 次 | 頁155-162 |
分類號 | 333.3 |
關鍵詞 | 二油酸磷脂醯膽汁鹼; 光子相關函數光譜學; 臨界微胞濃度; 液胞; DOPC; Photon correlation spectroscopy; PCS; Critical micelle concentration; CMC; Vesicles; |
語 文 | 英文(English) |
中文摘要 | 本研究是將二油酸磷脂醯膽汁鹼(DOPC)製成液胞,分別浸混於水、糖和KCl溶液中,再經由(1)用緩衝溶液稀釋之。(2)用0.10 M HCl和0.10 M NaOH調整其pH值。(3)用水循環回流系統增降其溫度,然後藉由光子相關函數光譜儀測其液胞之粒徑變化,由實驗結果得如下結論:(1)DOPC液胞粒徑的大小受制於高斯曲線的分佈。(2)DOPC在鹽水中之液胞粒徑隨pH值增高而降低,然在糖水中則隨pH值之調整而形成半圓狀的分佈。(3)液胞在各種介質中之濃度調整中,發現其粒徑有明顯之轉折點,顯示有類似界面活性劑之微胞農度。(4)液胞之粒徑隨著溫度之變化有熱縮冷漲的現象,且沿著溫度調高或降低,其粒徑的大小在同一曲線上出現,顯示此液胞在生命器官的血液中有滲透壓和反滲透壓階梯的調節功能。 |
英文摘要 | In this work we measured systematically the radial characterization of L-α-dioleoyl-phosphatidyl-choline (DOPC) vesicles by photon correlation spectroscopy (PCS). In this work the prepared DOPC vesicles were immersed in separate mediums of H2O, sucrose and KCl. The experiment was then conducted as follows: (1) diluting with a tris-HCl buffer solution (pH=7.55). (2) adjusting the pH value with 0.10 M HCl and 0.10M NaOH. (3) increasing and decreasing temperature with water circulation reflux system. From the results of these experiments, we arrived at the following conclusions: (1) The size of DOPC vesicles are subject to the distribution of Gaussian curve. (2) The size of DOPC vesicles in KCl solution decreases with high pH value, but in sucrose solution, the diameters of DOPC vesicles formed an approximately hemisphere distribution. (3) while the DOPC vesicles were diluted in H2O, sucrose, and KCl, the curves all showed clearly marked flection points; these results show that the formation of DOPC vesicles has a concentration similar to the critical micelle concentration (CMC) of surfactants. (4) the particle radius of DOPC vesicles decreases with high temperature and increases with low temperature, and these data remained constant, both when the temperature was adjusted from high to low, and conversely when the temperature was adjusted from low to high. The above results show that DOPC has osmotic and inverse osmotic pressure gradient forces which have a special regulation function in the blood of living organisms. |
本系統中英文摘要資訊取自各篇刊載內容。