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See how whiskey brought these oysters back to life
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Meet the man who swam through the Great Pacific Garbage Patch
In Finland, scientists are making an entirely new ingredient out of air, water and electricity – and they hope it could revolutionize the way our food is produced.
Feeding an ever-growing population is putting a huge strain on the Earth’s resources. Agriculture is one of the world’s largest sources of greenhouse gases, with animal farming in particular responsible for 14.5% of the world’s greenhouse gas emissions, mostly from beef and dairy cattle.
On top of that, farming uses vast areas of land that might otherwise be home to carbon-storing forests; it also guzzles huge amounts of water – up to 70% of water-use worldwide, according to the OECD.
But a Helsinki-based company is trying to change that.
“In order to save the planet from climate change, we need to disconnect food production from agriculture,” says Pasi Vainikka, CEO of Solar Foods.
Protein powder
At its pilot plant, the start-up is developing a new natural source of protein it calls Solein. Like other protein supplements, it has no discernible taste and can be added to almost any snack or meal. But Solar Foods says its product will have have a tiny carbon footprint.
Solein is a protein-rich powder made by a microbe. The makers say it's 100 times more climate friendly than meat.
Mikael Kuitunen/solar foods
You can already buy proteins made from microbes. Quorn is a meat alternative derived from a fungus. Quorn says its "mycoprotein uses 90% less land and water than producing some animal protein sources."
Shutterstock
In Quorn, the fungus is mixed with an egg- or potato-based binder to produce meat alternatives including fake mince, sausages and chicken nuggets.
courtesy quorn
Marmite -- a savory spread popular in the UK -- is another food made from microbes -- in this case, concentrated yeast extract, which is a by-product of beer brewing.
AFP/Getty Images
Meat-free proteins are becoming increasingly popular. Impossible Foods has produced a burger containing a genetically modified version of heme -- an iron-containing molecule from soy plants, which gives it a meaty flavor.
Stephen Lam for CNN
The company debuted its Impossible Pork product in January 2020. This pork substitute is also made with soy protein.
Impossible
KFC has launched a vegan burger in the UK and Ireland. It is made from Quorn served with vegan mayonnaise.
KFC
Tyson, one of the world's biggest meat producers, has launched a line of chicken-free (but not egg free) chicken nugget alternatives, as well as burger patties made with a combination of beef and plants.
tyson
Tyson's chicken nuggets are sold under the brand Raised & Rooted. They are made from pea protein, egg white and flaxseed and bamboo fiber.
Beyond Meat makes plant-based meat alternatives. Its burgers have been trialled by McDonald's, and Dunkin' Donuts sells a breakfast sandwich featuring Beyond Meat's meatless sausage.
Beyond Meat
British bakery chain Greggs introduced a vegan sausage roll in 2019. The filling is made from Quorn. Barclays predicts the alternative meat sector could reach about $140 billion in sales over the next decade, capturing about 10% of the global meat industry.
Christopher Furlong/Getty Images
The world's largest food company, Nestlé, is adding vegan sausages to its lineup of imitation meat products. Products will include soy-based bratwurst and chorizo-style sausages, as well as pea protein-based sausages that come in habanero cheddar, Asian ginger scallion and chicken apple flavors.
Nestlé
Memphis Meats is among the companies producing meat by growing stem cells in a lab. Innovators including Bill Gates and Richard Branson are investing $17 million in Memphis Meats. Tyson Foods and Cargill have also invested in the company.
Memphis Meats
Other meat alternatives are not so new. Tofu as been eaten for thousands of years and is made from dried soybeans that are soaked in water, crushed and boiled. Tofu is around 6-8 percent protein.
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Tempeh is a traditional Indonesian product made from fermented soy.
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Seitan is a meat alternative that originated in Asia, made from gluten, or wheat protein.
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Meat substitutes are going mainstream
Solein is made by growing a microbe in liquid in a fermentation tank. It’s similar to the process used in breweries, but instead of feeding it sugars, as you would when brewing beer, Solar Foods’ microbe eats only hydrogen bubbles, carbon dioxide, nutrients and vitamins.
Solar Foods makes hydrogen by applying electricity to water, and sources carbon dioxide by extracting it from air – which is why the company describes Solein as being “food out of thin air.” All this is powered by renewable energy, minimizing the product’s carbon footprint.
“You end up with a powder that is about 65 percent protein and carbs and fats,” Vainikka told CNN.
That powder could be added to things like bread and pasta, or to plant-based meat or dairy substitutes. One day, it could even be used as a food source for lab-grown meat, he says.
Solar Foods claims production of Solein is 100 times more climate friendly than meat and 10 times better than plant-based proteins, as well as using much less water.
Scaling up
The company was founded in 2017, made up of former scientists from Finland’s national research institute.
Its pilot plant is able to produce about a kilo of dry protein powder per day, and Vainikka says it can match the price of existing plant or animal protein ingredients, with “a production cost of $5-$6 per kilogram of 100 percent protein.”
Solein, in its powder form.
Solar Foods
It aims to have Solein on the market and in millions of meals by 2021, but before then it needs to scale-up from pilot plant to major commercial production, and Solein needs regulatory approval for human consumption.
Tomas Linder is an associate professor of microbiology at the Swedish University of Agricultural Sciences, not connected to Solar Foods. He believes that proteins derived from microbes have a part to play in feeding the planet while reducing emissions.
He points out that using carbon dioxide as the carbon source means you can produce this kind of food anywhere, and adds that freeing up land from farming means it could be used to let forests recover, which would sequester more carbon dioxide from the atmosphere.
But Linder cautions that more studies are needed before we can be sure of the carbon emissions associated with these kinds of products. “You also have to consider that at the amount we have to produce, you would need to build huge bioreactors, with lots of concrete and steel,” he says – which would result in extra carbon emissions.
Solar Foods is currently working with the European Space Agency on a way for astronauts to use Solein while in orbit. While that may sound like the realms of science fiction, Solar Foods is keen to point out that its process is natural.
“We are doing the same thing plants are doing, but … we don’t need the sun,” says Vainikka. “Our process is fundamentally more efficient.”
