Chemical Studies of Polysaccharide Material in Soils and Composts Based on Extraction With Anhydrous Formic Acid

Parsons, J. W.; Tinsley, J.

doi:10.1097/00010694-196107000-00007

Cited by 37 publications

(11 citation statements)

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“…SINGH and BHANDARI [1963] have used the FOLIN-WU [1920] method, which employs reduction of alkaline copper solutions. The results are much higher than those obtained for total sugars by paper chromatography (PARSONS and TINSLEY [1961]). According to MEHTA, DUBACH, and DEUEL [1961], soil organic materials do not interfere with the Somogyi method for the determination ofreducing sugars, and PARSONS and TINSLEY [1961] have used a modification of this procedure to estimate reducing sugars in soil extracts and hydrolysates.…”

Section: Hydrolysis Procedurescontrasting

confidence: 58%

Saccharides

Greenland¹,

Oades²

1975

Soil Components

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Section: Hydrolysis Procedurescontrasting

confidence: 58%

Saccharides

Greenland¹,

Oades²

1975

Soil Components

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“…According to MEHTA, DUBACH, and DEUEL [1961], soil organic materials do not interfere with the Somogyi method for the determination ofreducing sugars, and PARSONS and TINSLEY [1961] have used a modification of this procedure to estimate reducing sugars in soil extracts and hydrolysates. The results are much higher than those obtained for total sugars by paper chromatography (PARSONS and TINSLEY [1961]). The results are much higher than those obtained for total sugars by paper chromatography (PARSONS and TINSLEY [1961]).…”

Section: Total Reducing Sugarscontrasting

confidence: 58%

“…BLACK, CORNHILL, and WOODWARD [1955] used 40% sodium hydroxide prior to dialysis and precipitation ofthe crude polysaccharide with ethanol. PARSONS and TINSLEY [1961] used di-isopropyl ether to precipitate organic materials from anhydrous formic acid extracts of soil. BARKER et al [1965] neutralized the extract with sodium bicarbonate and examined the polysaccharides in both the supernatant and the precipitate.…”

Section: Purification Of Soil Polysaccharidesmentioning

confidence: 99%

“…Similarly, little success has been obtained using quaternary ammonium compounds (BERNIER [1958aJ). PARSONS and TINSLEY [1961] dissolved polysaccharide preparations in water adjusted to pH 7.0 with lithium carbonate. The acidic materials present were precipitated with hexadecyltrimethyl-ammonium bromide (cetavalon).…”

Section: Fractional Precipitationmentioning

confidence: 99%

“…PARSONS and TINSLEY [1961] dissolved polysaccharide preparations in water adjusted to pH 7.0 with lithium carbonate. The only noted PARSONS and TINSLEY [1961] BARKER et al [1965] Compost difference was that the methoxyl content of the insoluble cetavalon precipitate was higher than that of the other two fractions. The cetavalon -precipitate was extracted with 0.5 M lithium chloride to bring acidic polysaccharides into solution.…”

Section: Fractional Precipitationmentioning

confidence: 99%

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1975

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Mikrobielle Verwertung von Mischsubstraten

Weide¹

1983

J of Basic Microbiology

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Decomposition of substrates by heterotrophic microorganisms is accomplished in natural biotopes soch as in soil and in waters, on or in macroorganisms but also in laboratory and industrial biotopes. The interest of man in these processes is manifold. Starting with the division of substrates into three groups of simple substrates, complex and mixed substrates with or without solid particles their qualitative and quantitative occurrence in nature and their significance in biotechnology will be discussed. In the decomposition of these substrates their utilization by pure cultures or mixed populations is t o be exactly distinguished. Simple growth curves, di-or polyauxy, sequences of decomposition of simple substrates of a mixed substrate, population changes and successions are only some of the phenomena occurring in this process. The pathways of catabolism are subjected to manifold regulations on the three levels of stoichiometrio regulation, the regulation of enzyme activity and the regulation of enzyme synthesis. In natural biotopes there is hardly a constant substrate supply over a longer period. That's why certain mechanisms of regulation are permanently acting. Thus the "normal" physiological state for microorganisms is characterized by permanent transition situationscalled "transients". These reactions are also applied to many biotechnological processes.

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Chemical Studies of Polysaccharide Material in Soils and Composts Based on Extraction With Anhydrous Formic Acid

Cited by 37 publications

References 0 publications

Saccharides

Saccharides

Soil Components

Mikrobielle Verwertung von Mischsubstraten

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