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Product Life Cycle Assessment (LCA) is one of the methods developed to monitor and minimize the environmental impact of the production process. It is, therefore, an environmental management system that contributes to the sustainable development and reduction of pollution. This study presents an application of LCA in the production of thermally-treated peppers for industrial use. Initially, the basic methodology followed in each LCA analysis is presented; it consists of 4 steps: goal and scope definition, inventory analysis, impact assessment, interpretation of results. To this end, the inputs and outputs in the plant are quantified using historical production data, and then, with the help of the GaBi software, the environmental impacts are identified and evaluated. More specifically, the representation of the production plant is realized through a process flowchart which is composed of the processes and the flows that constitute the inputs and outputs of each process. The overall production includes three main steps: cutting of fresh peppers, packaging of chopped peppers and thermal treatment (pasteurization in a horizontal pasteurizer). With the use of the GaBi software, the environmental impact of the thermally-treated peppers is calculated for each production month (July to November) in 2016. The reference operating unit of the system is assumed to be 1 kg of final product. From the analysis of the results, it is concluded that the environmental impact per product unit is less during the months of intensive production compared to months of smaller production. After evaluating the environmental impact of the basic seenario, an alternative production scenario is presented; in this scenario, the horizontal pasteurizer is substituted with state-ofthe- art sterilization autoclaves for the thermal treatment of the product. By comparing the two scenarios in GaBi, it is concluded that the use of sterilization autoclaves results in the reduction of all environmental impact indices in the order of 1-10%. The environmental benefit is more pronounced during the months of low productivity