ROME, August 6 — A new class of plant-derived myoglobin is being put forward as a working alternative to traditional animal agriculture, and the numbers attached to that claim are difficult to ignore. The case rests on data compiled by the Food and Agriculture Organization of the United Nations, the record shows, and it positions the technology as a direct answer to the environmental cost of livestock production.
According to the FAO, conventional livestock farming accounts for approximately 14.5% of all human-induced greenhouse gas emissions worldwide. The bulk of that comes from methane released through enteric fermentation — the digestive process in ruminants — and nitrous oxide from manure management. Those are emissions that cannot be captured or filtered at the source; they are biological, not industrial.
Water tells a similar story. The FAO’s figures put beef production at an estimated 15,415 liters of water per kilogram of product, a number that towers over most plant-based foods. Land use follows the same pattern. Livestock farming occupies around 77% of global agricultural land, yet delivers only 18% of the world’s calories and 37% of its protein.
That mismatch is the strategic opening for what comes next.
The technology behind the claim
The new approach grows myoglobin — the protein responsible for meat’s color and taste — in plants such as lettuce and tobacco. Those involved in the development say the process can achieve protein yields per hectare that rival or even exceed those of animal agriculture. If that holds at commercial scale, the implications for land use are substantial.
A more efficient protein yield would free up vast areas currently given over to grazing and feed crops. Those lands could be returned to reforestation or other ecological purposes, a point the technology’s backers emphasize when making their case to policymakers. The water savings run in the same direction: growing plant crops generally uses a fraction of the water needed for animal feed production and direct animal consumption, according to the data.
And by removing livestock from the equation entirely, the method would bypass the methane and nitrous oxide emissions tied to animal digestion and waste. That is the core of the environmental argument — not incremental improvement over current farming practice, but a structural elimination of the emission sources themselves.
The policy backdrop
The timing is not accidental. The Paris Agreement of 2015, signed by nearly every major economy, seeks to limit global warming to well below 2 degrees Celsius above pre-industrial levels. Agriculture has long been regarded as one of the hardest sectors to move within that framework — emissions here are diffuse, tied to hundreds of millions of individual farms, and resistant to the kind of point-source regulation that works on power plants or factories.
The developers of plant-derived myoglobin describe their work as a measurable pathway to decarbonize a significant portion of the food system. For governments weighing food security against emissions commitments, that framing matters: it offers a market-based shift rather than a mandate to eliminate animal products overnight.
The question now is whether the technology can move from laboratory yields to commercial parity. The protein output per hectare will need to hold up in field conditions, and production costs will need to fall far enough to compete with conventional meat at the retail level. The FAO’s figures provide the benchmark — 14.5% of global emissions, 77% of agricultural land, 15,415 liters of water per kilo of beef — against which any alternative will be measured. Whether plant-based myoglobin meets that standard is the next chapter of this story.
Sources
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