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Showing 25 to 36 of 885 entries
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Biosensors for determination of glucose with glucose oxidase immobilized on an eggshell membrane.

Talanta

Wu B, Zhang G, Shuang S, Choi MM.
PMID: 18969638
Talanta. 2004 Oct 08;64(2):546-53. doi: 10.1016/j.talanta.2004.03.050.

A glucose biosensor using an enzyme-immobilized eggshell membrane and oxygen electrode for glucose determination has been fabricated. Glucose oxidase was covalently immobilized on an eggshell membrane with glutaraldehyde as a cross-linking agent. The glucose biosensor was fabricated by positioning...

Enzymatic-spectrophotometric determination of sucrose in coffee beans.

Talanta

Alcázar A, Jurado JM, Martín MJ, Pablos F, González AG.
PMID: 18970237
Talanta. 2005 Oct 15;67(4):760-6. doi: 10.1016/j.talanta.2005.04.005. Epub 2005 Apr 26.

A spectrophotometric method for determining sucrose is proposed. Sucrose is hydrolyzed by invertase into glucose and fructose. Then, glucose is oxidized in presence of glucose oxidase and the produced hydrogen peroxide reacts with phenol-4-sulfonic acid sodium salt and 4-aminoantipyrine...

Prussian blue modified glassy carbon electrodes-study on operational stability and its application as a sucrose biosensor.

Talanta

Haghighi B, Varma S, Alizadeh Sh FM, Yigzaw Y, Gorton L.
PMID: 18969561
Talanta. 2004 Sep 08;64(1):3-12. doi: 10.1016/j.talanta.2003.11.044.

Stabilisation of electrochemically deposited Prussian blue (PB) films on glassy carbon (GC) electrodes has been investigated and an enhancement in the stability of the PB films is reported if the electrodes are treated with tetrabutylammonium toluene-4-sulfonate (TTS) in the...

Glucose biosensors based on the immobilization of copper oxide and glucose oxidase within a carbon paste matrix.

Talanta

Luque GL, Rodríguez MC, Rivas GA.
PMID: 18970008
Talanta. 2005 Apr 15;66(2):467-71. doi: 10.1016/j.talanta.2004.07.019. Epub 2005 Apr 07.

The performance of amperometric glucose biosensors based on the dispersion of glucose oxidase (GOx) and copper oxide within a classical carbon (graphite) paste composite is reported in this work. Copper oxide promotes an excellent electrocatalytic activity towards the oxidation...

Various techniques for the routine evaluation of the degradation of glucose in parenteral solutions--a critical study.

Journal of pharmaceutical and biomedical analysis

Postaire E, Pradier F, Postaire M, Pradeau D, Matchoutsky L, Prognon P, Hamon M.
PMID: 16867499
J Pharm Biomed Anal. 1987;5(4):309-18. doi: 10.1016/0731-7085(87)80036-5.

A practical approach is described for studying the influence of various physicochemical factors on the degradation of glucose in parenteral solutions sterilized by heating in an autoclave. Five routine analytical methods are discussed: pH determination; direct ultraviolet absorption measurement...

The study and application of biomimic peroxidase ferric 2-hydroxy-1-naphthaldehyde thiosemicarbazone (Fe(III)-HNT).

Talanta

Tang B, Du M, Sun Y, Xu HL, Shen HX.
PMID: 18967337
Talanta. 1998 Oct;47(2):361-6. doi: 10.1016/s0039-9140(98)00149-0.

Ferric 2-hydroxy-1-naphthaldehyde thiosemicarbazone (Fe(III)-HNT) has been synthesized and used to mimic the active group of horseradish peroxidase (HRP). The catalytic characteristics of this mimic-enzyme catalyst in the oxidation reaction of ascorbic acid with hydrogen peroxide has been studied. The...

Evaluation of luminol-H(2)O(2)-KIO(4) chemiluminescence system and its application to hydrogen peroxide, glucose and ascorbic acid assays.

Talanta

Zhou Y, Nagaoka T, Li F, Zhu G.
PMID: 18967485
Talanta. 1999 Feb;48(2):461-7. doi: 10.1016/s0039-9140(98)00267-7.

A novel chemiluminescence (CL) system was evaluated for the determination of hydrogen peroxide, glucose and ascorbic acid based on hydrogen peroxide, which has a catalytic-cooxidative effect on the oxidation of luminol by KIO(4). Hydrogen peroxide can be directly determined...

Electrochemical properties of benzoquinone and ferrocene monocarboxylic acid at a polyaniline coated platinum electrode for glucose sensing.

Talanta

Zhang ZR, Bao WF, Liu CC.
PMID: 18966012
Talanta. 1994 Jun;41(6):875-9. doi: 10.1016/0039-9140(94)e0050-2.

The electrochemical properties of benzoquinone and ferrocene monocarboxylic acid, which can be used as mediators for enzymatic reactions were studied at a polyaniline coated platinum electrode. Benzoquinone and ferrocene monocarboxylic acid were used in the catalytic cycle of a...

Flow-injection determination of trace hydrogen peroxide or glucose utilizing an amperometric biosensor based on glucose oxidase bound to a reticulated vitreous carbon electrode.

Talanta

Khayyami M, Johansson G, Kriz D, Xie B, Larsson PO, Danielsson B.
PMID: 18966567
Talanta. 1996 Jun;43(6):957-62. doi: 10.1016/0039-9140(95)01872-7.

An electron transfer mediator, 8-dimethylamino-2,3-benzophenoxazine (Meldola Blue), dissolved in the carrier solution in a flow-injection system, was found to reduce the oxidation potential for hydrogen peroxide from 600-1200 mV without mediator to-100 mV vs. Ag/AgCl with the mediator present....

Self-assembled biotinylated disulfide derivative monolayer on gold electrode for immobilizing enzymes.

Talanta

He P, Ye J, Fang Y, Anzai J, Osa T.
PMID: 18966816
Talanta. 1997 May;44(5):885-90. doi: 10.1016/s0039-9140(96)02133-9.

Based on self-assembled biotinylated disulfide derivative monolayer on gold electrode, the sensors immobilized monolayer or multilayer membranes composed of avidin and biotinlabeled glucose oxidase (B.GOD) or of avidin-B.GOD complex (ABC) and B.COD were prepared. The present technique may be...

Glucose oxidase immobilized polyethylene-g-acrylic acid membrane for glucose oxidase sensor.

Biotechnology and bioengineering

Hsiue GH, Wang CC.
PMID: 18597278
Biotechnol Bioeng. 1990 Oct 20;36(8):811-5. doi: 10.1002/bit.260360809.

A polyethylene-g-acrylic acid (PE-g-AA) graft copolymer was prepared via gamma-ray-irradiation-induced postirradiation procedures, and was used as support material for the immobilization of glucose oxidase. Soluble carbodiimides were used as the coupling agent. Reasonable yields were obtained with CMC but...

Development of biosensors for the simultaneous determination of sucrose and glucose, lactose and glucose, and starch and glucose.

Biotechnology and bioengineering

Watanabe E, Takagi M, Takei S, Hoshi M, Shu-Gui C.
PMID: 18600703
Biotechnol Bioeng. 1991 Jun 05;38(1):99-103. doi: 10.1002/bit.260380113.

Sensors for the simultaneous determinations of sucrose and glucose, lactose and glucose, and starch and glucose were prepared by a combination of the enzyme system shown below and an oxygen electrode: The mechanism for separating the substrates with the...

Showing 25 to 36 of 885 entries