Schulten and Schnitzer have reported little variability in soil amino acids composition and thus suggested the usefulness of soil amino acids concentration as an indicator of any biological property [3 4] observed that amino acids and amino sugars
were indicator of soil N responsiveness by agricultural crops.
Parsons JW (1981) Chemistry and distribution of amino sugars in soils and soil organisms.
They found that the distribution of amino sugar N was higher in agricultural soils non-responsive to N fertilization, such as those that had been manured, than in N-fertilizer-responsive soils, and was useful in estimating soil-N availability.
Amino sugar N is strongly associated with microbial activity, commonly limited by high carbon to nitrogen ratios in soils.
We hypothesized that amino sugar N concentrations in soils would be higher under N-fixing plants than in adjacent soils away from the leaf canopies of N-fixing plants.
Different amino sugars derive from different groups of soil microorganisms (Sowden and Ivarson 1974; Parson 1981; Zhang et al.
The objectives of our study were (i) to examine the composition and distribution of lignin, amino sugars, and carbohydrates as revealed by alkaline CuO oxidation and hydrochloric acid and trifluoroacetic acid hydrolyses, respectively; and (ii) to evaluate the transformation of chemical structures of carbon during the decomposition of SOM under tropical conditions along a decomposition gradient within a given site (depth profiles) and between sites (different management systems).
Identification and quantification of amino sugars was conducted by capillary gas-liquid chromatography using an HP 5 fused silica column (Agilent Technologies, Inc.
As hypothesized, clay content had a positive effect on the retention of amino sugars
A daily supplement of the amino sugars
glucosamine and chondroitin sulphate will stimulate cartilage production and improve joint function, while a multivitamin will help keep bones healthy.
Common amino acids, phospho-amino acids, amino sugars
, and simple sugars can be separated and detected with excellent run-to-run reproducibility," says Ruthann Kiser, director of consumables product management at Dionex.