The objective of this research was to assess the effect of lactic fermentation process of some leguminous plant seeds on the content of phenolic compounds, antioxidant activity, and levels of protein and carbohydrate components in chips and pastas manufactured from those seeds. Among the raw materials studied, green lentil and red bean had the highest content of polyphenols and the highest antioxidant activity: 6.0 mg/g d.m and 20.25 mg Tx/g d.m, and 5.12 mg/g d.m., 19.60 mgTx/g d.m, respectively. The process of fermentation significantly decreased both the content of phenolic compounds and the antioxidant activity in all the products analyzed. However, the lactic fermentation process and the subsequent physical treatment of raw material (extrusion, pressing the raw material) caused the digestibility rate of nutrient components to increase. The highest digestibility of protein in vitro was recorded after the extrusion process of broad bean (75.64%).