Occurrence of hydrolysis products of phospholipids in some sub-humid tropical soils of Bangladesh

Abstract

Hance and Anderson's method for determining lipid pliosphate was found best among the four methods used due fo double over-night pretreatments. Air-dried samples yielded lower lipid values than the fresh ones due to changes in the nature of the organic matter itself on drying, or adsorption and binding of lipids to clay fractions. Concentrations of phosphatidyl choline, phosphatidyl ethanolamine and glycerophosphate ranged from 0.65 to 9.50, 0.30 to 3.60 and 0.15 to 2.25 ppm, respectively and each was significantly correlated with organic phosphate, total phosphate, organic carbon and total nitrogen content of the samples. All the fractions, however, showed belter correlation to the cumulative effect o f the same variables.