小柯机器人

德国波茨坦气候影响研究所Florian Humpenöder等研究人员完成微生物蛋白替代牛肉的环境效益预测。这一研究成果于2022年5月4日在线发表在国际学术期刊《自然》上。

Author: Humpender, Florian, Bodirsky, Benjamin Leon, Weindl, Isabelle, Lotze-Campen, Hermann, Linder, Tomas, Popp, Alexander

Issue&Volume: 2022-05-04

Abstract: Ruminant meat provides valuable protein to humans, but livestock production has many negative environmental impacts, especially in terms of deforestation, greenhouse gas emissions, water use and eutrophication1. In addition to a dietary shift towards plant-based diets2, imitation products, including plant-based meat, cultured meat and fermentation-derived microbial protein (MP), have been proposed as means to reduce the externalities of livestock production3,4,5,6,7. Life cycle assessment (LCA) studies have estimated substantial environmental benefits of MP, produced in bioreactors using sugar as feedstock, especially compared to ruminant meat3,7. Here we present an analysis of MP as substitute for ruminant meat in forward-looking global land-use scenarios towards 2050. Our study complements LCA studies by estimating the environmental benefits of MP within a future socio-economic pathway. Our model projections show that substituting 20% of per-capita ruminant meat consumption with MP globally by 2050 (on a protein basis) offsets future increases in global pasture area, cutting annual deforestation and related CO2 emissions roughly in half, while also lowering methane emissions. However, further upscaling of MP, under the assumption of given consumer acceptance, results in a non-linear saturation effect on reduced deforestation and related CO2 emissions—an effect that cannot be captured with the method of static LCA.

DOI: 10.1038/s41586-022-04629-w

Source: https://www.nature.com/articles/s41586-022-04629-w

Nature：《自然》，创刊于1869年。隶属于施普林格·自然出版集团，最新IF：69.504
官方网址：http://www.nature.com/
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