Designing Sustainable Value Stream Mapping to Enhance Sustainability Performance in the Tofu Industry

This study analyzes the performance of the tofu production industry through the application of Sustainable Value Stream Mapping (Sus-VSM). The assessment covers three sustainability dimensions: economic, environmental, and social. Economic indicators include process time efficiency and product quality; environmental indicators address material utilization and waste management efficiency; and social indicators focus on worker health and safety risks. The Current State Value Stream Mapping reveals inefficiencies in production, such as delays during boiler preparation stages and the cooling process, defective products resulting from cutting process issues, and unprocessed solid waste at the end of the production line. Social challenges include potential occupational accidents and worker fatigue due to non-ergonomic postures. The study proposes optimizing firewood inventory, installing additional fans, and introducing tofucutting tools to address these issues. These interventions improved time efficiency from 78% to 89%, enhanced material efficiency from 89% to 95%, and increased waste handling efficiency to 97% by reusing solid waste into “tempeh gembus” . Social performance improvements are suggested through regulated rest periods and the installation of hazard signs in high-risk areas. The recommended actions are expected to reduce fatigue and occupational hazards. Future research should consider expanding the analysis to include air pollution impacts to support sustainable development in tofu production.