私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

相關鏈接
聯系方式
  • 通信地址:湖北省武漢市洪山區珞瑜路1037號華中科技大學生命科學與技術學院(東11樓)619室
  • 郵編:430074
  • 電話:027-87793523
  • 傳真:027-87792265
  • Email:yang_sunny@yahoo.com
當前位置:> 首頁 > 論文著作 > 正文
Nano-cellulose 3D-networks as controlled-release Drug Carriers
作者:Lin Huang,Xiuli Chen,Chuncheng Ruan,Huiru Tang,Liming Zhang,Guang Yang*
關鍵字:Drug Carriers,cellulose
論文來源:期刊
具體來源:Journal of Materials Chemistry B 1(23): 2976-2984.
發表時間:2013年

Abstract:

Bacterial cellulose (BC) membranes are used as the carrier for berberine hydrochloride and berberine sulphate to produce a new controlled release system. Release studies and transdermal experiments were carried out in vitro. Carrier BC can significantly extend the drug release time, in contrast to existing commercial carriers. Freeze-dried BC membranes 10 mm thick were optimized for drug delivery. The lowest release rate was in simulated gastric ?uid (SGF) or in H2SO4 solution, the highest in simulated intestinal ?uid (SIF) and intermediate rate was found in alkaline conditions. The release curves closely followed the Ritger-Peppas model with free diffusion the most prominent mechanism. Scanning electron microscopy (SEM) analysis demonstrated that BC fibers were swollen in acid and base conditions. 1H high-resolution magic angle spinning nuclear magnetic resonance (1H HRMAS NMR) diffusion-ordered spectroscopy (DOSY) analysis showed that there was an interaction between the drugs and BC. The structure of BC, the media and the solubility of the drug, all influenced the sustained-release behavior. The results from the release studies, the electron micrographs, and the transdermal experiments were good in agreement.

主站蜘蛛池模板: 枝江市| 彩票| 辽阳县| 保山市| 花莲县| 许昌县| 大名县| 灵璧县| 宜阳县| 兴仁县| 长春市| 金昌市| 辛集市| 邵武市| 德化县| 三都| 青阳县| 遂昌县| 定结县| 永宁县| 涿鹿县| 永州市| 绍兴县| 平顶山市| 区。| 洪湖市| 浦城县| 黔南| 巫山县| 镇康县| 红安县| 合阳县| 木兰县| 吉水县| 淳安县| 青阳县| 盐池县| 巨野县| 日照市| 乌兰察布市| 呼伦贝尔市|