Loading of vitamin E into silicone hydrogel by supercritical carbon dioxide impregnation toward controlled release of timolol maleate

2018 ◽  
Vol 131 ◽  
pp. 11-18 ◽  
Author(s):  
Yuta Yokozaki ◽  
Yusuke Shimoyama
Keyword(s):  
Carbon Dioxide ◽  
Vitamin E ◽  
Controlled Release ◽  
Supercritical Carbon Dioxide ◽  
Timolol Maleate ◽  
Silicone Hydrogel ◽  
Supercritical Carbon

Extraction and Identification of Vitamin E from Pithecellobium Jiringan Seeds Using Supercritical Carbon Dioxide

2015 ◽  
Vol 74 (7) ◽  
Author(s):  
Mohd Azizi Che Yunus ◽  
Salman Zhari ◽  
Saharudin Haron ◽  
Nur Husnina Arsad ◽  
Zuhaili Idham ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Vitamin E ◽  
Supercritical Carbon Dioxide ◽  
Potential Method ◽  
Operating Conditions ◽  
Oil Yield ◽  
Flight Mass Spectrometry ◽  
Carbon Dioxide Extraction ◽  
Natural Herb ◽  
Supercritical Carbon

Pithecellobium Jiringan (P. Jiringan) is traditionally known as natural herb consists of several medicinal compounds (vitamin E). Supercritical carbon dioxide extraction (SC-CO2) has been proven as potential method to extract interest compound from herbs. By altering pressure and temperature, the specific compound can be extracted. In this study, the SC-CO2 operating conditions are pressure (20.68 MPa to 55.16 MPa) and temperature (40°C to 80°C) in one hour extraction regime was used to extract vitamin E from P. jiringan. The quantification of vitamin E was analysed with Gas Chromatography Time of Flight Mass Spectrometry (GC-TOF-MS). The responses are overall oil yield and vitamin E yield. The overall oil yield was obtained at the highest condition of 55.16 MPa and 80°C with asymptotic yield of 8.06%. In contrast, the highest amount of vitamin E obtained is 0.0458mg/g sample (80.14 ppm) at the lowest extraction condition of 20.68 MPa and 40ᵒC.

Study on the Use of Supercritical Carbon Dioxide as a Solvent to Prepare Novel, Efficient Controlled-Release Materials

2014 ◽  
Vol 71 (1) ◽  
pp. 1-10
Author(s):  
Chikara TSUTSUMI ◽  
Ami TSUZUKI ◽  
Teruyuki HARA ◽  
Yuushou NAKAYAMA ◽  
Takeshi SHIONO
Keyword(s):  
Carbon Dioxide ◽  
Controlled Release ◽  
Supercritical Carbon Dioxide ◽  
Supercritical Carbon

Solubility of Vitamin E Acetate in Supercritical Carbon Dioxide with Ethanol as Cosolvent

2018 ◽  
Vol 63 (11) ◽  
pp. 4248-4255 ◽  
Author(s):  
Jiangrui Cheng ◽  
Sai Han ◽  
Junying Song ◽  
Weifang Wang ◽  
Zhen Jiao
Keyword(s):  
Carbon Dioxide ◽  
Vitamin E ◽  
Supercritical Carbon Dioxide ◽  
Vitamin E Acetate ◽  
Supercritical Carbon

Impregnation of vitamin E acetate on silica mesoporous phases using supercritical carbon dioxide

2009 ◽  
Vol 51 (2) ◽  
pp. 278-286 ◽  
Author(s):  
F. Belhadj-Ahmed ◽  
E. Badens ◽  
P. Llewellyn ◽  
R. Denoyel ◽  
G. Charbit
Keyword(s):  
Carbon Dioxide ◽  
Vitamin E ◽  
Supercritical Carbon Dioxide ◽  
Vitamin E Acetate ◽  
Supercritical Carbon

Extraction of Natural Vitamin E from Wheat Germ by Supercritical Carbon Dioxide

2002 ◽  
Vol 50 (4) ◽  
pp. 685-689 ◽  
Author(s):  
Yiqiang Ge ◽  
Hong Yan ◽  
Bodi Hui ◽  
Yuanying Ni ◽  
Shaoxiao Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Vitamin E ◽  
Supercritical Carbon Dioxide ◽  
Wheat Germ ◽  
Natural Vitamin ◽  
Supercritical Carbon
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