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Measurements of starch breakdown as estimates of glycolysis during thermogenesis by the spadix of Arum maculatum L. (1977)

ap Rees, T. ; Wright, B. W. ; Fuller, W. A.

Springer

Planta 134 (1977), S. 53-56

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ISSN: 1432-2048

Keywords: Arum maculatum ; Glycolysis ; Spadix ; Starch breakdown ; Thermogenesis

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Abstract The rates of starch breakdown at thermogenesis by clubs of the spadices of Arum maculatum L. were measured in individual clubs still attached to the plants. The values obtained were used as estimates of the rate of glycolysis at thermogenesis. Such rates were shown to exceed the maximum catalytic activities of phosphofructokinase (E.C. 2.7.1.11.), aldolase (E.C. 4.1.2.7.), and glyceraldehydephosphate dehydrogenase (E.C. 1.2.1.12.) in developing clubs. The marked increases in the activities of the above enzymes that occur during the development of the club have been shown to be a prerequisite for the attainment of the high rate of glycolysis found at thermogenesis, and thus to be an example of coarse control of glycolysis.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00390094

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Determination of triphenyltin hydroxide derivatives by capillary GC and tin-selective FPD (1979)

Wright, B. W. ; Lee, M. L. ; Booth, G. M.

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 2 (1979), S. 189-190

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ISSN: 0935-6304

Keywords: Gas Chromatography ; Capillary, glass ; Tin-selective FPD ; Triphenyltin hydroxide ; TPTH ; Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: A new method for the determination of triphenyltin hydroxide using capillary column gas chromatography with a tin-selective flame photometric detector has been developed. Triphenyltin hydroxide and its potential metabolites are converted to methyl derivatives and separated on glass capillary columns coated with OV-101. Derivatization of triphenyltin hydroxide, triphenyltin chloride, diphenyltin dichloride, phenyltin trichloride, and bis-triphenyltin oxide is nearly quantitative with a minimum of redistribution products. The selectivity of the flame photometric detector is cearly demonstrated by the comparison of chromatographic profiles obtained from using both the flame photometric and flame ionization detectors.The use of this chromatographic system in the analysis of triphenyltin hydroxide in a fortified water sample demonstrates the potential use of this system in organotin residue chemistry.

Additional Material: 3 Ill.