STUDIES ON THE PROPERTIES OF ORGANIC MATTER IN BURIED HUMIC HORIZON DERIVED FROM VOLCANIC ASH : IV. Characteristics of Polysaccharides in Hydrolysates of Fulvic Acid and in Ethanol Precipitates from Fulvic Acid in Buried Humic Horizon
スポンサーリンク
概要
- 論文の詳細を見る
Hexose and neutral sugars in hydrolysates of fulvic acid fraction from buried humic horizons extracted successively with 0.1 N NaOH and 0.1 M Na_4P_2O_7 were determined. Hexose and uronic acid in 75% ethanol precipitates from the fulvic acid were also determined. The proportion of mannose in hydrolysates of fulvic acid extracted with NaOH showed a tendency to increase with age, but the proportion of galactose decreased. The proportion of arabinose and xylose in hydrolysates of the fulvic acid extracted with Na_4P_2O_7 decreased with increasing age. Most of the constituent neutral monosaccharides of the polysaccharides in fuluvic acids of the two extracts were hexoses. The uronic acid to hexose ratios of the 75% ethanol precipitates of the fuluvic acid extracted with NaOH did not show large variation from 28,000 years B.P. to the present. However, the values of 75% ethanol precipitates of fulvic acid extracted with Na_4P_2O_7 increased with increasing age.
- 社団法人日本土壌肥料学会の論文
著者
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Yoshida Masao
Faculty of Agriculture, Ibaraki University
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Yoshida Masao
Faculty Of Agriculture Tokyo University Of Agriculture And Technology:(present Address)faculty Of Ag
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SAKAGAMI Kan-ichi
Faculty of Agriculture, Tokyo University of Agriculture and Technology
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HAMADA Ryunosuke
Faculty of Agriculture, Tokyo University of Agriculture and Technology
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KUROBE Takashi
Faculty of Agriculture, Tokyo University of Agriculture and Technology
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Kurobe Takashi
Faculty Of Agriculture Tokyo University Of Agriculture And Technology
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Hamada Ryunosuke
Faculty Of Agriculture Tokyo University Of Agriculture And Technology
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Sakagami Kan-ichi
Faculty Of Agriculture Tokyo University Of Agriculture And Technology
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Yoshida Masao
Faculty Of Agriculture Nagoya University
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