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Qu S, Dai C, Qiu M, Zhang R, Wang C, Cui L, Hao Z. Preparation and characterization of three types of cefquinome-loaded microspheres. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2017. [DOI: 10.1080/1023666x.2017.1283169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Shaoqi Qu
- Agricultural Bio-pharmaceutical Laboratory, Qingdao Agricultural University, Qingdao, China
- National-Local Joint Engineering Laboratory, Agricultural Bio-pharmaceutical Technology, Qingdao Agricultural University, Qingdao, China
| | - Cunchun Dai
- Agricultural Bio-pharmaceutical Laboratory, Qingdao Agricultural University, Qingdao, China
- National-Local Joint Engineering Laboratory, Agricultural Bio-pharmaceutical Technology, Qingdao Agricultural University, Qingdao, China
| | - Mei Qiu
- Agricultural Bio-pharmaceutical Laboratory, Qingdao Agricultural University, Qingdao, China
- National-Local Joint Engineering Laboratory, Agricultural Bio-pharmaceutical Technology, Qingdao Agricultural University, Qingdao, China
| | - Ruili Zhang
- Agricultural Bio-pharmaceutical Laboratory, Qingdao Agricultural University, Qingdao, China
- National-Local Joint Engineering Laboratory, Agricultural Bio-pharmaceutical Technology, Qingdao Agricultural University, Qingdao, China
| | - Chunyuan Wang
- Agricultural Bio-pharmaceutical Laboratory, Qingdao Agricultural University, Qingdao, China
- National-Local Joint Engineering Laboratory, Agricultural Bio-pharmaceutical Technology, Qingdao Agricultural University, Qingdao, China
| | - Liangliang Cui
- Agricultural Bio-pharmaceutical Laboratory, Qingdao Agricultural University, Qingdao, China
- National-Local Joint Engineering Laboratory, Agricultural Bio-pharmaceutical Technology, Qingdao Agricultural University, Qingdao, China
| | - Zhihui Hao
- Agricultural Bio-pharmaceutical Laboratory, Qingdao Agricultural University, Qingdao, China
- National-Local Joint Engineering Laboratory, Agricultural Bio-pharmaceutical Technology, Qingdao Agricultural University, Qingdao, China
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Yang D, Peng X, Zhong L, Cao X, Chen W, Zhang X, Liu S, Sun R. “Green” films from renewable resources: Properties of epoxidized soybean oil plasticized ethyl cellulose films. Carbohydr Polym 2014; 103:198-206. [DOI: 10.1016/j.carbpol.2013.12.043] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 12/08/2013] [Accepted: 12/14/2013] [Indexed: 11/25/2022]
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Sengel-Turk CT, Hascicek C, Gonul N. Ethylcellulose-based matrix-type microspheres: influence of plasticizer RATIO as pore-forming agent. AAPS PharmSciTech 2011; 12:1127-35. [PMID: 21887603 DOI: 10.1208/s12249-011-9680-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Accepted: 08/23/2011] [Indexed: 11/30/2022] Open
Abstract
In this study, ethylcellulose (EC)-based microsphere formulations were prepared without and with triethyl citrate (TEC) content of 10% and 30% by water-in-oil emulsion-solvent evaporation technique. Diltiazem hydrochloride (DH) was chosen as a hydrophilic model drug and used at different drug/polymer ratios in the microspheres. The aim of the work was to evaluate the influence of plasticizer ratio on the drug release rate and physicochemical characteristics of EC-based matrix-type microspheres. The resulting microspheres were evaluated for encapsulation efficiency, particle size and size distribution, surface morphology, total pore volume, thermal characteristics, drug release rates, and release mechanism. Results indicated that the physicochemical properties of microspheres were strongly affected by the drug/polymer ratio investigated and the concentration of TEC used in the production technique. The surface morphology and pore volume of microspheres significantly varied based on the plasticizer content in the formulation. DH release rate from EC-based matrix-type microspheres can be controlled by varying the DH to polymer and plasticizer ratios. Glass transition temperature values tended to decrease in conjunction with increasing amounts of TEC. Consequently, the various characteristics of the EC microspheres could be modified based on the plasticized ratio of TEC.
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