The research involved environmental assessment of technologies for the production of functional ingredients with oncoprotective functions on the basis of different raw materials: secondary resources – by-products of soybean oil production and plant raw materials (extracts from Filipendula ulmaria) in order to determine the environmental impact in their life cycle and to select the environmentally best of the considered technologies. The following biologically active substances were considered as research objects: microencapsulated phytosterols from by-products of soya oil production and nanoencapsulated extracts from wild and farmer Filipendula ulmaria. Life cycle assessment method was used as a research method as a tool to assess the environmental impact of production. Life cycle inventory analysis of technologies was carried out based on SimaPro 9.1.1.1.1 software using EPD (2018) V1.01, ReCiPe 2016 (Midpoint (H) V1.04/World (2010) H), and IPCC 2013 (GWP 500a V1.01) calculation models. Using the life cycle of functional ingredients for cancer prevention as an example, it is shown that the use soya oil production by-products is more environmentally friendly than the use of plant extracts from wild and farmer's labdanum (Filipendula ulmaria). The environmental impacts of the production technologies in the categories of global warming, eutrophication, acidification, and water consumption were quantified, confirming the superiority of phytostyrene from soya oil waste. The results obtained can be used to create a domestic information database for the selection of the best technologies for the production of biologically active substances and functional food ingredients, taking into account the environmental assessment of the life cycle.