Kertesz

R. Jullien, J. Kertesz, P. Meakiii, D. Wolf, eds. Surface Disordering Growth, Roughening and Phase Transitions. Commack Nova Science, 1993. 

This concept was introduced in 1948 by Sondheimer and Kertesz who nsed pH values of 2 and 3.4 for analyses of strawberry jams. Since then, the nse of other pH values has been proposed. Fnleki and Francis (1968) used pH 1 and 4.5 bnffers to measure anthocyanin content in cranberries, and modifications of this techniqne have been applied to a wide range of commodities. The absorbance of anthocy-anins at two different pH levels (1 and 4.5) is measured at Kis-max and at 700 mn, which corrects for haze in the sample (Table 6.3.1). The total monomeric anthocy-... 

Kertesz Z.I. (1951) The pectic substances. Interscience Publishers NY (specially p. 121-122). 

Eichhorn E, JR van der Ploeg, MA Kertesz, T Leisinger (1997) Characterization of an a-ketoglutarate-depen-dent taurine dioxygenase from Escherichia coli. J Biol Chem 272 23031-23036. 

Kahnert A. MA Kertesz (2000) Characterization of a sulfur-regulated oxygenative aUcylsulfatase from Pseudomonas putida S-313. J Biol Chem 275 31661-31667. 

Denger K, MA Kertesz, EM Vock, R Schon, A Magli, AM Cook (1996) Anaerobic desnlfonation of 4-tolyl-sulfonate and 2-(4-sulfophenyl)butyrate by a Clostridium sp. Appl Environ Microbiol 62 1526-1530. 

Kertesz MA (1999) Riding the sulfur cycle—metaholism of sulfonates and sulfate esters hy Gram-negative bacteria. FEMS Microbiol Revs 24 135-175. 

Although sulfate is formed by hydrolysis of both alkyl and aryl sulfates, the pathway of degradation for aryl sulfates is controlled by the source of sulfur (Cook et al. 1999). The complex issues surrounding the hydrolysis of sulfate esters have been discussed (Kertesz 1999), and are illustrated by the number and substrate specificity of alkyl sulfatases for the surfactant 2-butyloctyl sulfate in Pseudomonas sp. strain AE-A (Ellis et al. 2002). 

Taurine is degraded aerobically either by a 2-ketoglntarate-dependent dioxygenation to aminoacetaldehyde (Kertesz 1999) (cf. degradation of 2,4-dichlorophenoxyacetate) or by transamination and fission by a lyase that is also nsed anaerobically with the formation of acetate (Cook et al. 1999). 

It has already been noted (Chapter 9, Part 4) that the degradation of aromatic sulfonates when they are used as source of carbon involves dioxygenation, whereas when they serve as a source of sulfur in the absence of snlfate, degradation takes place by monooxygenation to produce the corresponding phenol and snlfite (Kertesz 1999). 

Mirleau P, R Wogelius, A Smith, MA Kertesz (2005) Importance of organosulfur utilization for survival of Pseudomonas putida in soil and rhizosphere. Appl Environ Microbiol 71 6571-6577. 

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