Although the preponderance of the organic carbon in soils (70-80%) is composed of humic substances the presence of the other components of soil organic matter, such as the lipid component, can not be neglected. Our studies focus on the extractable lipid fraction and its contribution to the sorption behavior of soil organic matter and its structural characteristics. It is shown that removal of the extractable lipids increase the sorption capacity of the soil, decrease the isotherm linearity, and increase sorption exothermicity, indicating a stronger interaction of hydrophobic contaminants with the rest of soil organic matter. It is suggested that lipids, assumed to be an implicit sorbate, compete with the incoming contaminants for the same sorption sites. The lipid fraction, including extractable lipids and biopolymers such as cutin and suberin, is responsible for a significant portion of the aliphatic nature of soil organic matter. Moreover, it is demonstrated by NMR, X-ray diffraction and differential scanning calorimetry analyses, that the lipid fraction contains (CH2)n crystalline components. The melting temperatures of the lipid extracts are in the same temperature interval with the glass transition reported in the literature for geosorbents that have not undergone lipid extraction. These findings contribute to a better understanding of soil organic matter.