Product description
Soil polysaccharides are an important part of soil organic matter research. A large number of studies have confirmed that soil polysaccharides play an important role in promoting the formation of water-stable aggregates, enhancing the stability of soil structure, improving soil erosion resistance, and conserving fertilizer and water. Therefore, the study of soil polysaccharides is of great significance. Sugars, under the action of concentrated sulfuric acid, hydrolyze to form monosaccharides and quickly dehydrate to form sugar aldehyde derivatives, which then condense with phenol to form an orange-yellow compound. The color is stable, and at a wavelength of 488nm and within a certain concentration range, its absorbance is directly proportional to the polysaccharide content, which can then be quantitatively determined using a standard curve.
Additional Materials and Equipments Required
Visible spectrophotometer, 1mL glass cuvettes (optical path 1cm), pipettes, balance, low-temperature centrifuge.