The last decades composting of organic wastes in technical composting systems gained in importance due to the increase of organic waste. Besides the professional handling of biogenous waste the attention should also be turned to a high-quality final product (compost) of the composting process. The content of humic substances seems to be a quality characteristic of compost exceeding legal regulations. Humic substances found in compost provide several environmental benefits. Their function as carbon and nitrogen sink is only one of the essential aspects. The main focus of this diploma thesis is on the analysis of the impact of the input material on the humification process. The influence of additional lignin containing compounds on humification during the composting process was investigated in lab scale experiments. The objective of adding these materials was to improve the development of stable humic substances in biogenic waste compost. Besides the assessment of the degradation process and the identification of humic acid contents by conventional analytical methods, additional analytical such as thermogravimetry or ¿Fourier Transform Infrared (FT-IR)-Spectroscopy¿ have been applied. Moreover, a mass balance of carbon and organic substance was performed.