STUDIES ON THE PROPERTIES OF ORGANIC-MATTER IN BURIED HUMIC HORIZON DERIVED FROM VOLCANIC ASH .4. CHARACTERISTICS OF POLYSACCHARIDES IN HYDROLYSATES OF FULVIC-ACID AND IN ETHANOL PRECIPITATES FROM FULVIC-ACID IN BURIED HUMIC HORIZON

被引：5

作者：

YOSHIDA, M ^{[1
]}

SAKAGAMI, K ^{[1
]}

HAMADA, R ^{[1
]}

KUROBE, T ^{[1
]}

机构：

[1] TOKYO UNIV AGR & TECHNOL,FAC AGR,FUCHU,TOKYO 183,JAPAN

来源：

SOIL SCIENCE AND PLANT NUTRITION | 1979年 / 25卷 / 02期

关键词：

Fuivic acid; Paleosol; Polysaccharide; Time factor;

D O I：

10.1080/00380768.1979.10433162

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Hexose and neutral sugars in hydrolysates of fulvie acid fraction from buried humic horizons extracted successively with 0.1 n NaOH and 0.1 m Na4P2O7were 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 plactose decreased. The proportion of arabinose and xylose in hydrolysates of the fulvic acid extracted with Na4P2O7decreased with increasing age. Most of the constituent neutral monosaccharides of the polysaccharides in fulvic acids of the two extracts were hexoses. The uronic acid to hexose ratios of the 75% ethanol precipitates of the (u1vic 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 Na4P2O7increased with increasing age. © 1979 Taylor & Francis Group, LLC.

引用

页码：217 / 224

页数：8

共 5 条

[1]

KUMADA K., 1967, Soil and Plant Food, V13, P151

[2]

MARTIN J P, 1971, Soil Biology and Biochemistry, V3, P33, DOI 10.1016/0038-0717(71)90029-0

[3] STUDIES ON THE PROPERTIES OF ORGANIC-MATTER IN BURIED HUMIC HORIZON DERIVED FROM VOLCANIC ASH .3. SUGARS IN HYDROLYSATES OF BURIED HUMIC HORIZON [J].