Literature DB >> 14928

Measurement of the pH of frozen buffer solutions by using pH indicators.

Y Orii, M Morita.   

Abstract

A method was established to estimate the pH change of several buffers solutions on freezing by using a combination of pH indicators. Among more than 30 buffers solutions examined, almost half exhibited a pH change in the temperature range between freezing point and 220 degrees K; the results were tabulated. Glycerol was found to suppress the pH changes because of its "salt buffer" effect.

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Year:  1977        PMID： 14928     DOI： 10.1093/oxfordjournals.jbchem.a131431

Source DB:  PubMed          Journal:  J Biochem        ISSN： 0021-924X            Impact factor:   3.387


  16 in total

1.  A temperature independent pH (TIP) buffer for biomedical biophysical applications at low temperatures.

Authors:  Nathan A Sieracki; Hee Jung Hwang; Michelle K Lee; Dewain K Garner; Yi Lu
Journal:  Chem Commun (Camb)       Date:  2007-12-19       Impact factor: 6.222

2.  Reverse action of hydrolases in frozen aqueous solutions.

Authors:  M Hänsler; H D Jakubke
Journal:  Amino Acids       Date:  1996-09       Impact factor: 3.520

3.  Thermophysical properties of pharmaceutically compatible buffers at sub-zero temperatures: implications for freeze-drying.

Authors:  Evgenyi Y Shalaev; Tiffany D Johnson-Elton; Liuquan Chang; Michael J Pikal
Journal:  Pharm Res       Date:  2002-02       Impact factor: 4.200

4.  Decreased protein-stabilizing effects of cryoprotectants due to crystallization.

Authors:  K Izutsu; S Yoshioka; T Terao
Journal:  Pharm Res       Date:  1993-08       Impact factor: 4.200

5.  An investigation of the iron-sulphur proteins of benzene dioxygenase from Pseudomonas putida by electron-spin-resonance spectroscopy.

Authors:  P J Geary; F Saboowalla; D Patil; R Cammack
Journal:  Biochem J       Date:  1984-02-01       Impact factor: 3.857

6.  The pH dependence of naturally occurring low-spin forms of methaemoglobin and metmyoglobin: an EPR study.

Authors:  D A Svistunenko; M A Sharpe; P Nicholls; C Blenkinsop; N A Davies; J Dunne; M T Wilson; C E Cooper
Journal:  Biochem J       Date:  2000-11-01       Impact factor: 3.857

7.  Investigations into the stabilization of drugs by sugar glasses: III. The influence of various high-pH buffers.

Authors:  Jonas H C Eriksson; Wouter L J Hinrichs; Gerhardus J de Jong; Govert W Somsen; Henderik W Frijlink
Journal:  Pharm Res       Date:  2003-09       Impact factor: 4.200

8.  Electron paramagnetic resonance studies on Pseudomonas nitrosyl nitrite reductase. Evidence for multiple species in the electron paramagnetic resonance spectra of nitrosyl haemoproteins.

Authors:  M K Johnson; A J Thomson; T A Walsh; D Barber; C Greenwood
Journal:  Biochem J       Date:  1980-08-01       Impact factor: 3.857

9.  Influence of the freezing process upon fluoride binding to hemeproteins.

Authors:  A S Yang; A S Brill
Journal:  Biophys J       Date:  1991-05       Impact factor: 4.033

10.  An analysis of some thermodynamic properties of iron-sulphur centres in site I of mitochondria.

Authors:  W J Ingledew; T Ohnishi
Journal:  Biochem J       Date:  1980-01-15       Impact factor: 3.857
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