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ykd321: ½ð±Ò+5, ¡ïÓаïÖú 2015-05-18 17:11:26
Keywords: ethanol injection method; nitrendipine; encapsulation rate or efficiency; orthogonal design; lyophilization or  freeze drying
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3Â¥2015-05-18 08:45:07
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Abstract: Liposomal nitrendipine was prepared  by ethanol injection method. Using encapsulation rate as an indicator, the following three factors, the amount of phosphotidylcholine, the amount of cholesterol and stirring-hydration time, were evaluated to determine the influence on the liposome encapsulation rate of nitrendipine.  The liposome preparation method was optimized based on an  orthogonal design to determine the best preparation process. The liposomes prepared under optimized condition were added with cryo-protectant, and frozen  in a refrigerator at - 20 ¡æ for 24 h, then lyophilized for 12 hrs under - 50 ¡æ  to produce freeze-dried powder for injection.
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