COMPARATIVE STUDY ON THE IMMOBILIZATION OF LIPASE ON CHITOSAN GELS MODIFIED BY DIFFERENT HYDROPHOBIC GROUPS

2009 ◽  
Vol 16 (02) ◽  
pp. 323-327 ◽  
Author(s):  
HONG-TAO DENG ◽  
YAN LIN ◽  
JUAN-JUAN WANG ◽  
ZHONG-YANG LIU ◽  
MIAO MA ◽  
...  
Keyword(s):  
Surface Modification ◽  
Benzoic Acid ◽  
Comparative Study ◽  
Stearic Acid ◽  
Adsorption Capacity ◽  
Immobilized Lipase ◽  
Candida Rugosa ◽  
Hydrophobic Surface ◽  
Carbodiimide Hydrochloride ◽  
Lipase From Candida Rugosa

The hydrophobic surface modification of chitosan gels (CS) was carried out using the amidating reaction of amido groups on a gel surface with propionic acid, stearic acid, and benzoic acid, respectively, activated by 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS). Lipase from Candida rugosa was immobilized by adsorption on the nascent CS, propionyl-modified gels (PCS), stearyl-modified gels (SCS), and benzoyl-modified gels (BCS), respectively. The adsorption capacity and activity of immobilized lipase were investigated. It was found that the surface modification improved the adsorption capacity of lipase, and the activity retention of immobilized lipase increased from 52.34% for CS to 57.17%, 78.26% and 69.22%, respectively, for PCS, SCS, and BCS.

Hydrophobic surface modification of chitosan gels by stearyl for improving the activity of immobilized lipase

2009 ◽  
Vol 20 (8) ◽  
pp. 995-999 ◽  
Author(s):  
Hong Tao Deng ◽  
Juan Juan Wang ◽  
Miao Ma ◽  
Zhong Yang Liu ◽  
Fei Zheng
Keyword(s):  
Surface Modification ◽  
Immobilized Lipase ◽  
Hydrophobic Surface

Production of ricinoleic acid estolide with free and immobilized lipase from Candida rugosa

2008 ◽  
Vol 39 (3) ◽  
pp. 450-456 ◽  
Author(s):  
A. Bódalo ◽  
J. Bastida ◽  
M.F. Máximo ◽  
M.C. Montiel ◽  
M. Gómez ◽  
...  
Keyword(s):  
Ricinoleic Acid ◽  
Immobilized Lipase ◽  
Candida Rugosa ◽  
Lipase From Candida Rugosa

Comparative Study of Responses of Two Enzymatic Biosensors Based on Lipase from Candida rugosa and Porcine Pancreas for Detection of Diclofop-Methyl

2013 ◽  
Vol 11 (11) ◽  
pp. 2021-2029 ◽  
Author(s):  
Souad Baali ◽  
R. Kherrat ◽  
S. Zougar ◽  
Z. Djeghaba ◽  
F. Benamia ◽  
...  
Keyword(s):  
Comparative Study ◽  
Candida Rugosa ◽  
Porcine Pancreas ◽  
Enzymatic Biosensors ◽  
Lipase From Candida Rugosa

scholarly journals Improved production of biolubricants from soybean oil and different polyols via esterification reaction catalyzed by immobilized lipase from Candida rugosa

Fuel ◽  
2018 ◽  
Vol 215 ◽  
pp. 705-713 ◽  
Author(s):  
Elisa D.C. Cavalcanti ◽  
Érika C.G. Aguieiras ◽  
Priscila R. da Silva ◽  
Jaqueline G. Duarte ◽  
Eliane P. Cipolatti ◽  
...  
Keyword(s):  
Soybean Oil ◽  
Immobilized Lipase ◽  
Candida Rugosa ◽  
Esterification Reaction ◽  
Lipase From Candida Rugosa

scholarly journals Comparative study of surface modification and D retention between beryllium and beryllides under high flux plasma exposure

2021 ◽  
pp. 101014
Author(s):  
M. Miyamoto ◽  
Y. Sugimoto ◽  
D. Nishijima ◽  
M.J. Baldwin ◽  
R.P. Doerner ◽  
...  
Keyword(s):  
Surface Modification ◽  
Comparative Study ◽  
High Flux ◽  
Plasma Exposure

A Comparative Study of Thiol-Terminated Surface Modification by Click Reactions: Thiol-yne Coupling versus Thiol-ene Michael Addition

2018 ◽  
Vol 5 (24) ◽  
pp. 1801343 ◽  
Author(s):  
Seyed Mohammad Mahdi Dadfar ◽  
Sylwia Sekula-Neuner ◽  
Vanessa Trouillet ◽  
Michael Hirtz
Keyword(s):  
Surface Modification ◽  
Comparative Study ◽  
Michael Addition ◽  
Click Reactions

Surface Modification of Nano-Al2O3 with Stearic Acid

2016 ◽  
Vol 703 ◽  
pp. 246-250
Author(s):  
Min Hong Xu ◽  
Jian Li Ma ◽  
Meng Xia Qian ◽  
Li Hua Jiang
Keyword(s):  
Surface Modification ◽  
Stearic Acid ◽  
Influence Factors ◽  
Optimal Conditions ◽  
Modification Effect ◽  
Before And After

Surface modification of nanoAl2O3 with stearic acid by dry method was researched. The structures of nanoAl2O3 before and after modified were characterized by IR. The modification effect on nanoAl2O3 was measured with the activation index. In addition, the influence factors of modifier dosage, modification time and modification temperature were also discussed. The results showed that nanoAl2O3 had been successfully modified with stearic acid. The hydrophily and lipophilicity experiments indicated that modified nanoAl2O3 possessed lipophilicity property and could disperse in xylene. The optimal conditions of modification were as follows: the stearic acid was 7.5 wt%, based on the quality of nanoAl2O3, modification time was 50 min and temperature was 150 ○C.

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