An Attempt to Characterize Calorimetrically the Inhibitory Effect of Foreign Substances on Microbial Degradation of Glucose in Soil

Kawabata, Toshiyuki; Yamano, Hideki; Takahashi, Katsutada

doi:10.1080/00021369.1983.10863884

Cited by 6 publications

(9 citation statements)

References 2 publications

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“…; =(Noqm +/lmQ) (lI.So -Q) I {(lI.So-Q+lI.Km ) (1 +:J} (12) Equation (12) is solved for the condition that the product inhibits non-competitively15,20) the viable cell V. Assuming that K p is the dissociation constant of a complex of an intermediate Xi with the product, and that P is the concentration of product which is generally proportional to the amount ·of substrate consumed, P is given by Q/a. Optimization was performed on the basis of equation (12).…”

Section: Estimation Of Parameters By the Direct Searching Methods Of Omentioning

confidence: 99%

“…The apparatus and its detection mode have been described elsewhere. 12 ) The soil sample used was alluvial soil which was a gift from Dr. T. Konno of the National Institute of Agro-Environmental Science, Tsukuba, Japan. 5 ml of nutrient solution containing 15 mg of glucose as a limiting substrate and 15 mg of (NH4)2S04 was added to 30 g of soil sample placed in a glass vial which served as a calorimetric vessel.…”

Section: S=so-jl (6) Exmentioning

confidence: 99%

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Computer Analysis of Kinetic Data for Microbial Growth Thermograms Observed with a Batch Calorimeter

Yamano

Takahashi²

1986

Agricultural and Biological Chemistry

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Section: Estimation Of Parameters By the Direct Searching Methods Of Omentioning

confidence: 99%

Section: S=so-jl (6) Exmentioning

confidence: 99%

Computer Analysis of Kinetic Data for Microbial Growth Thermograms Observed with a Batch Calorimeter

Yamano

Takahashi²

1986

Agricultural and Biological Chemistry

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“…Isothermal calorimetry can be used to study the effect of such methods by studying samples treated with different methods or measuring the thermal power of microorganisms before and after the application of a method. It has been used for studying the effect of various inhibitors on microbial growth (Alyabyev et al, 2004;Antoce, Antoce, Takahashi, Pomohaci, & Namolosanu, 1997;Kawabata, Yamano, & Takahashi, 1983;Okuda et al, 1996).…”

Section: Microbiological Spoilage Preventionmentioning

confidence: 98%

Isothermal calorimetry for biological applications in food science and technology

Wadsö

Galindo

2009

Food Control

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a b s t r a c tAll physical, chemical and biological processes produce heat and isothermal calorimetry is a general measurement technique to study all kinds of processes by the heat they produce. This paper gives several examples of studies of biological processes in the food area using isothermal calorimetry. It is for example shown how different unit operations influence respiration of vegetable tissue, how the kinetics of a fermentation process can be studied, and how spoilage processes can be followed for shelf-life determinations.

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“…All samples were stored in polyethylene bags at 4 • C for three months to attain equilibrium before microcalorimetric measurement. It is a common practice to ensure good reproducibility of the measurements (Kawabata et al 1983;Nuñez et al 1994a; Barja et al 1997), however, it disregards the in situ redox conditions of the samples.…”

Section: Sediment Samplesmentioning

confidence: 99%

Characterization of Depth-Related Microbial Community Activities in Freshwater Sediment by Combined Method

Chen

Yao

et al. 2011

Geomicrobiology Journal

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Currently there are very few researches on studying the vertical changes of metabolic and thermodynamic properties of microbial communities in freshwater lake sediment. In this work, a multi-channel microcalorimetric system was applied to investigate both the metabolism and thermodynamic properties of 0-35 cm sediment cores from Lake Honghu (Jingzhou, Hubei Province, China). It is suggested that the catastrophic flood in 1998 had changed the structure of the 20-25 cm sediment layer. In this layer, both the physicochemical properties of sediment and the thermodynamic activities of microorganisms exhibit distinct differences from other layers. It displays the highest TOC, TN and C/N values. The power-time curves of microcalorimetric measurement on the sediment samples were plotted to illustrate their microbial activities. The 20-25 cm sediment layer showed the lowest microbial activities with a maximum heat flow rate of 56.97 µW, a growth rate constant of 0.06 h −1 and the time to reach the peak was 98 h. A positive correlation (r = 0.972, P < 0.001) was found between the cell specific metabolic enthalpy change rate ( H 0 ) and the TOC of the sediment samples. H 0 could indicate the utilization efficiency of carbon source which is not affected by the biomass but relies on the intrinsic properties of sediment. Our work shows that the higher the TOC in sediment; the lower the efficiency in assimilating carbon into biomass by the microbes.

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An Attempt to Characterize Calorimetrically the Inhibitory Effect of Foreign Substances on Microbial Degradation of Glucose in Soil

Cited by 6 publications

References 2 publications

Computer Analysis of Kinetic Data for Microbial Growth Thermograms Observed with a Batch Calorimeter

Computer Analysis of Kinetic Data for Microbial Growth Thermograms Observed with a Batch Calorimeter

Isothermal calorimetry for biological applications in food science and technology

Characterization of Depth-Related Microbial Community Activities in Freshwater Sediment by Combined Method

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