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초록

The livestock sector is a major source of greenhouse gas emissions. With rising meat demand in Asia, balancing sustainability and nutrition is critical. This study assessed the environmental and nutritional impacts of partially replacing conventional meat with cultivated meat in the Korean diet using a hybrid life cycle assessment integrating greenhouse gas emissions and nutritional indicators. Substitution scenarios of 10-75% were modeled for beef, pork, and chicken, incorporating emission variability to evaluate trade-offs. Beef substitution achieved the largest emission reductions, up to 74.6%, while pork showed moderate benefits and chicken variable outcomes. Nutritionally, cultivated meat improved protein-to-fat ratios across scenarios, particularly in chicken substitution, with modeled protein increases up to 355% and fat reductions up to 325%. Overall, results indicate environmental performance depends on baseline meat type, while nutritional outcomes remain favorable. These findings provide preliminary evidence relevant to sustainable development discussions in future food systems.

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