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Protein From Gorse Bushes Could Feed Millions of People, Says Expert (theguardian.com) 127

An anonymous reader quotes a report from The Guardian: The gorse bushes that have invaded many Scottish landscapes could produce enough protein to feed millions of people, according to the leader of a Scottish government research program. The surprising suggestion by Prof Wendy Russell, at the University of Aberdeen, comes from research on the protein content of invasive plants that have to be doused with herbicides or burned back to keep them under control. Gorse contains 17% protein and broom has 21% protein, she said, adding: "Gorse and broom were fed to cattle at times when crops failed in the past, so we think protein from these types of plants could be used as animal food. If protein isolates are produced in the correct way, so to be safe, they could be considered as human food in the future."

"The whole point about gorse is it is actively being removed from marginal lands -- it's something we can gain protein from at no extra cost," she said. "We have a huge amount of gorse all over Scotland and when we did the calculations, just by active removal from marginal land, there's enough gorse protein to easily feed [Scotland's] population." [...] Scotland has little arable land, which is why Russell examined invasive plants on marginal land. "When you make a protein isolate from gorse, 57% of the total leaf protein can be recovered at up to 95% purity," she said. "We're using about 4.5 to 6kg of CO2 to produce [a kilogram of] isolate, compared to an average for meat of 102kg of CO2."

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Protein From Gorse Bushes Could Feed Millions of People, Says Expert

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  • Gorse (n): A noxious weed sometimes fed to cattle, but in Scotland there are hopes that it can support the people.
    • Scotland doesn't have any food shortages, so I doubt if eating wood pulp will be popular there. Sure, it is better than haggis, but that isn't saying much.

      • ...Sure, it is better than haggis, but that isn't saying much.

        Haggis is actually pretty tasty. I was always reluctant to eat it until somebody pointed out it's basically boudin [withhusbandintow.com] made with oats instead of rice.

    • Considering that hamburger was $8.99/lbs the other day, we might need this, even if eating weeds sounds pretty awful. Prices are going crazy lately.

      • Blame the meatpackers. https://www.cnbc.com/2022/01/0... [cnbc.com] I'm pretty sure a Rule of Acquisition describes the circumstance.
        • I blame idiot Biden. I know some experts disagree, but I don't see how manufacturing money for endless recovery rebates can fail to cause inflation. Add to that the massive supply chain disruptions caused by the continuation of COVID--which has become worse in the USA than ever before under Biden's incompetent leadership. When grocery stores are often unable to get the products on the shelves, the producers will increase prices to help make up for the decline in sales. If they don't, there's a risk of serio
      • by Entrope ( 68843 )

        Where do you get those prices? Here in northern Virginia, even Whole Foods Market only charges $8/pound for 93% lean ground beef. My regular chain charges $7/pound for 95% lean. Fattier ground beef is a dollar or two cheaper per pound, and buying in bulk (5 pounds) saves even more.

        • GEEZ....ya'll pay a lot.

          Just looking at one of the grocery stores here, store ground ground chuck $2.99/lb [zuppardos.com].

          I generally buy my ground beef at Costco, I think it may be usually about $3.99 or so when not on sale.

          Damn, are all your groceries that expensive up north?

  • Goats are good at browsing on arable land and it may be easier to convince people to eat goat meat than it is to eat gorse and broom protein isolate. Of course the marginal lands in scotland may be marginal because of over-grazing in the past. The grazing would have to be managed carefully. "Goat, like lamb, but different!"
    • by ShanghaiBill ( 739463 ) on Monday January 10, 2022 @11:22PM (#62162981)

      On rough/rocky land, you can let the goats browse.

      On arable land, it is better to grow and harvest the plants, then pelletize or pulp them into animal feed. You will get better yields because the goats aren't constantly nipping off the new leaves.

      An advantage of gorse is the plants can be harvested while leaving the roots and crown intact over the winter. So the plants will grow back fast in the spring.

      • Yeah I meant to type "goats are good at browsing on marginal land." I really wish slashdot would allow edits. Thanks for replying though.
        • Yeah I meant to type "goats are good at browsing on marginal land."

          Ah, that makes much more sense.

          Goat meat is popular in Mexico. My mom has a farm and her neighbor raises goats. She sells them mostly to Mexican restaurants and supermarkets. Gorse grows in arid Mediterranean climates so should do well in northern Mexico and much of California and the American Southwest. In some areas of California, it is an invasive species.

          • by Bert64 ( 520050 )

            Goat meat (and goat milk) is popular in many countries around the world. It's one of the most commonly consumed meats globally.

          • by cusco ( 717999 )

            Even here in Washington state it's considered a noxious weed.

            Problem with allowing goats to browse the gorse is that they also destroy every other plant they encounter as well. Our primary vegetative pest is Himalayan blackberries, goats are sometimes used to control them, but they have to be watched closely to make sure they don't munch down everything else in the neighborhood. Their hooves can cause erosion as well, even more so than sheep.

      • On all land it's better, as in markedly more efficient, to eat the food yourself, instead of filtering it through someone else's metabolism first at 6-10% efficiency.
    • Goats _destroy_ ecologies, they eat right down to the roots and they breed quickly and easily. In many ecologies, they're a very invasive species. The over-breeding of goats is thought to be one of the major causes of the Sahara desert, which was not always a desert.

      • OK, well you eat gorse. I would rather eat goat, though. And OF COURSE the grazing would need to be managed. I said that right in my first post. As a practical matter, I don't think it is going to be very easy for humans or machines to harvest gorse from marginal lands and isolate proteins from it. But tending to goats would be possible.
        • by N1AK ( 864906 )

          OK, well you eat gorse. I would rather eat goat, though

          And I'd rather eat steak but last time I checked the point of this thread wasn't to redundantly list food preferences.

          • Well, you are replying to my comment. The point of my comment was that perhaps goats could process gorse into protein that people would find more palatable than gorse and broom isolate. It will not do much good to produce gorse protein if nobody wants to eat it.
        • This generation gets goat. _Lots_ of goat. Managing the goats is the very definition of the "tragedy of the commons" problem, and that works out very poorly in desperately poor areas of the world.

                  https://www.popsci.com/sahara-... [popsci.com]

          • But I wouldn't describe Scotland as desperately poor or without multiple regulatory institutions. Pretty sure they could avoid the "tragedy of the commons" in this instance.

    • Given the choice between meat from a goat that's been raised organically and ethically with a good standard of welfare, versus something that has been through umpteen stages of processing to get viable food product from a plant, I'd take the former. Not pushing a pro-carnivore/anti-vegetarian agenda...I just worry about the ultra-processed nature of a lot of these plant-based alternative foodstuffs.
    • Just my thought.
      Seriously? Who is going into a shop with a note on his shopping list "buy proteins" unless he is a guy who runs to a gym daily and wants it for his muscles?
      I go to a shop and buy: meat! or fish or a sausage.
      And yes, I also enjoy vegetarian dishes: but would never put some "artificial" protein substance into it. Tofu in a stew? Does not belong there: period.
      If you want to eat Tofu, get a cooking book and look how it is eaten. Much much more enjoyable and tasty.

      However: from that protein thing

  • If you have to farm the thing, that requires land. We need to chemically synthesize all our proteins and carbs in nuclear or solar powered synthesis factories in the deserts. Farming is stupid, aliens would laugh at us and classify us as primitive. It can be done, we already know how to totally chemically synthesize many proteins. The intermediate step would be to grow special bioengineered versions of our favorite crops optimized to grow under lights on shelves. Think of it as plant tissue culture. That is

    • You forgot that "chemically synthesize" means taking A and B and joining them together. To do that, you need both A and B. Actually, typically you need many more grams of inputs than the grams of usable output you get. Often, you synthesize a protein by starting with a different protein and replacing one of the peptides. So you synthesize protein by starting with protein ... :)

      • I am referring to Total Synthesis. Meaning start with any hydrocarbon generated from any carbon source such as CO2 or wood that is converted to an organic compound which is then turned into the amino acids and then proteins.

        • > If you have to farm the thing, that requires land. We need to chemically synthesize all our proteins and carbs in nuclear or solar powered synthesis factories in the deserts. Farming is stupid

          > Meaning start with any hydrocarbon generated from any carbon source such as CO2 or wood

          You're under the impression that growing wood (plants) does not require land?

          You're a Democrat voter, aren't you?

          • I was explaining the chemistry of it, dumbass. It requires carbon, which can be found anywhere including recycling shit after you eat it. You know about that don't you?

    • Farming is stupid, aliens would laugh at us and classify us as primitive

      Or maybe aliens would value food that tastes good as much as we do, and they would merely laugh (or sigh sadly, depending on their empathy) at our bullshit extractive farming methods when farming can be not just balanced (in that it doesn't deplete soil, or consume natural resources) but in fact restorative.

  • by iamnotx0r ( 7683968 ) on Monday January 10, 2022 @10:50PM (#62162897)
    I wonder if this expert eats this crap.

    I bet it tastes like lysol.
  • Scotland has a declining population, with only 1.29 babies per woman. They certainly do not need to start eating soylent green.
    Why should they suffer because some shithole country on the edge of the desert keeps their women illiterate, and having 6 babies each?

    Cattle are great for grazing on grassland that is otherwise unsuitable for agriculture, but feeding them grain or similar crops is very inefficient.
    Better to feed this new product to chickens, which are extremely efficient at converting plants to ta

    • As the guy above said, goats can probably eat it now. Is it tastes bad even for them, or if it taints the meat a little gene splicing should fix that.

      How exactly they are going to go through a pasture and collect just the gorse on a commercial scale is a question. A gorse eating goat, or deer or bison for that matter would do it naturally.

      It's not a bad idea. Eat the invasive species is a fine notion. Where I live they imported pheasants and chukars specifically to eat, and they never get out of control.

      • goats can probably eat it now.

        Goats will certainly eat it. Gorse is grown in many places as fodder. Cattle can also eat it if it is crushed.

        How exactly they are going to go through a pasture and collect just the gorse on a commercial scale is a question.

        Gorse grows densely and tends to crowd out all other plants. This makes it a nasty invasive species, but easy to grow commercially.

    • by nagora ( 177841 )

      Scotland has a declining population, with only 1.29 babies per woman. They certainly do not need to start eating soylent green.

      Gee. Maybe they could export it?

      Alternatively, can we learn from the weeds, and engineer something that grows on otherwise useless land, and will be nutritious to grazing cattle?

      Like gorse, you mean?

      • by quenda ( 644621 )

        Scotland has a declining population, with only 1.29 babies per woman. They certainly do not need to start eating soylent green.

        Gee. Maybe they could export it?

        Better to use it to stop importing the grain they feed their chickens, no?

        Alternatively, can we learn from the weeds, and engineer something that grows on otherwise useless land, and will be nutritious to grazing cattle?

        Like gorse, you mean?

        Why the sneering attitude? Do you behave that way in real life? Try asking properly why they don't do that now.

  • "protein isolate" (Score:4, Insightful)

    by HiThere ( 15173 ) <charleshixsn.earthlink@net> on Monday January 10, 2022 @11:09PM (#62162947)

    Well, perhaps. I've got my doubts. Not all protein is equivalent, and most plants don't have the amino acid balence people need. Cattle frement this stuff in an internal biodigester before metabolizing it. People don't have a rumen, so that step would need to be done externally, and even so, people aren't really adapted to living on a diet of purely plants. We can do so by careful selection and balencing of multiple different plants, but it's non-trivial.

    Note that I haven't even addressed the question of taste, or even convincing people to try it.

    • > most plants don't have the amino acid balance people need

      True. You need to eat more than one plant. Unless you eat one of the plants that has all of the essential amino acids.

      > people aren't really adapted to living on a diet of purely plants. We can do so by careful selection and balencing of multiple different plants, but it's non-trivial.

      Most people around the world do it by eating both rice AND beans.

      People eat more rice than they do beef. Your country is just weird.
      If you want to call "eat both

      • PS:

        > people aren't really adapted to living on a diet of purely plants.

        The other great apes eat about 3% meat, 97% plants. That's roughly what our bodies are naturally adapted to. Obviously we CAN survive for years eating much, much more meat. We just get obese and die of heart disease.

        The other apes also eat a much larger variety of plants, whatever is in season that day and handy. They don't fly fruit from South America to Canada to have bananas every day of the year. Humans eat most rice, corn, and

        • Re: (Score:3, Interesting)

          by blahabl ( 7651114 )

          PS:

          > people aren't really adapted to living on a diet of purely plants.

          The other great apes eat about 3% meat, 97% plants. That's roughly what our bodies are naturally adapted to. Obviously we CAN survive for years eating much, much more meat. We just get obese and die of heart disease.

          The other apes also eat a much larger variety of plants, whatever is in season that day and handy. They don't fly fruit from South America to Canada to have bananas every day of the year. Humans eat most rice, corn, and wheat. We lack variety compared to the natural apes.

          No, it's not. Apes are apes, and pretty much everything that makes us different from apes is our adaptation to a new environment, that is savannah, instead of jungle. Upright posture, less body hair, everything, switching from vitamin C to uric acid as the main antioxidant, etc. This also includes severe metabolic changes, to deal with a new diet. Because in jungle you eat fruits, while in savannah you either eat grass, or you eat things that eat grass. And dunno about you but I don't seem to have a rumen.

          • Try going on a fully vegan diet of white bread, pasta, potato chips and fries and you'll balloon to huge weight too.

            That's a junk food diet that just happens to be vegan.

          • by AnilJ ( 1342025 )

            Try going on a fully vegan diet of white bread, pasta, potato chips and fries and you'll balloon to huge weight too.

            Berkeley-Stanford. I have ben vegetarian all my life. There are several in India who eat only vegetarian. They are all fine with very few health problems. The word is saatvika

        • Obviously we CAN survive for years eating much, much more meat. We just get obese and die of heart disease.
          You do not get obese from eating meat. Regardless how fat it is. That is close to impossible.

          You get obese from starch and sugars, and fake sugars that send the wrong messages to your hormone system.

          To convert proteins into fat that can be stored, aka being obese, the chemical/metabolizing process is so long and complicated it simply does not happen in "ordinary people". Only Inuit, Maori etc. can do t

      • It's fine to be a veggie. Thumbs up for that. The problem starts when veg* groups start telling all the rest of people in the world what they should and should not eat. Eating preferences should be like religion - Thy shall keep it to yourself. Respect, tolerate but don't force your own beliefs onto others.

      • by HiThere ( 15173 )

        You need more than rice an beans. Mushrooms help a lot. And different beans have a slightly different balence. Some claim that soy contains a good balence of everything, but I'm not so sure. But when you add in tomatoes, onions, etc. you start to get a good balence. Nuts also help.

        P.S.: I'm *not* a vegetarian, though I did look into it. But vegetarianism is only possible due to cultural learning. OTOH, the same is true of hunting and pastorial living. People learn to do things through their cult

        • You need a certain amount (grams) of each of the essential amino acids each day. *If* you're only getting 40 grams of protein and you need 6 grams of leucine, 6 grams of tryptophan, etc THEN you'd need a balance. Simply because if half of those 40 grams are threonine, that would leave only 20 grams for all the others.

          If you're packing down 100+ grams of protein every day like a typical American, you could eat 50 grams of threonine and still get plenty of each of the others. As long as you get enough trypto

      • by tlhIngan ( 30335 )

        People eat more rice than they do beef. Your country is just weird.

        Probably because in North America, beef is fairly plentiful because the resources to grow it are plentiful. Water, land, grains, etc are plentiful, so that's why cattle is popular despite being really bad nutritionally (saturated fat, cholesterol) and environmentally (poor food conversion rate, takes a lot of land and water). Chicken and pork are far more economical. It's why "plant based meat" is a thing - replacing beef consumption is one

    • by ljw1004 ( 764174 )

      Note that I haven't even addressed the question of taste, or even convincing people to try it

      https://www.diffordsguide.com/... [diffordsguide.com]

      Gorse has traditionally been used as a flavor/syrup because of its pleasant sweet coconut smell.

      • by jabuzz ( 182671 )

        That's the flowers. The rest of the plant which is what is under discussion is an entirely different kettle of leaves.

    • I like the idea of forcibly genetically mutating people to have a rumen so that we can be more ecologically sensitive.

      Which leads me to a question a friend had asked while playing Stellaris.
      "Which is worse, morally:
      - enslaving billions of people, or
      - genetically modifying people so they are happy to be enslaved"

    • Wow, modded insight full by idiots.
      That is actually the only reason I answer.

      Not all protein is equivalent, and most plants don't have the amino acid balence people need.
      Irrelevant, you get the missing proteins form other plants. Or meat.

      Cattle frement this stuff in an internal biodigester before metabolizing it.
      Irrelevant. Cattle does not ferment amino acids aka proteins. They ferment cellulose aka fibres, to make starch from it.

      People don't have a rumen, so that step would need to be done externally, an

  • You can lead the Gorse to a waiter, but you can't make it extinct.

  • You can just harvest gorse or graze animals on marginal lands and extract soil nutrients at orders of magnitudes above the natural rate and it's all going to be all right. Somehow weathering will increase by orders of magnitude to keep up, it's magical ... well either it's magical or it's going to hit a brick wall at some points.

  • by account_deleted ( 4530225 ) on Monday January 10, 2022 @11:40PM (#62163031)
    Comment removed based on user account deletion
  • I look forward to trying me some Gorslent Green.

  • Gorse and Broom

    Sounds like a comedy show about a married ogre and witch.

    • by Tablizer ( 95088 )

      You can eat a Gorse, of course,
      but a horse wouldn't eat the gorse.
      Go right to the source and ask the horse.
      He'll give you the answer that you'll endorse.
      He's always on a steady course.
      The horse will skip it without remorse;
      so alone you'll have your tasty Gorse.

  • Many plant sources of protein are deficient in amino acids essential for human health. As animal feed this wouldn't likely be a problem though.
  • Harvesting? (Score:4, Interesting)

    by keithdowsett ( 260998 ) on Tuesday January 11, 2022 @03:54AM (#62163263) Homepage

    Clearly he's never tried cutting down gorse. It's a mass of sharp thorns on tough woody stems that even goats will only eat as a last resort. You would have to pay me a heap of money to spend my days harvesting that stuff.

    'Marginal' land that means places too steep or rocky for mechanised farming. So I can only assume that he's planning to reinstate prison work gangs, sending out convicts to harvest gorse bushes. Nobody else would want to do it.

    • Correction: She's not He's

    • by jabuzz ( 182671 )

      I think the point is that it is already being removed as an invasive species but at the moment it is just dumped somewhere. To be fair it is more likely to be shredded and then composted than dumped. However the point is at the moment it is waste material but with a bit of processing it could be turned into animal feed. Mind you I have not seen large amounts of gorse growing in the highlands myself, but perhaps I have not been looking close enough.

      As others have pointed out in the past the vast majority of

    • by AmiMoJo ( 196126 )

      He is saying that if it were grown as a crop and harvested mechanically, it could potentially be broken down into something we could eat as a source of protein.

      We eat loads of stuff that isn't exactly easy to harvest by hand, like coconuts and root vegetables. Even some spikey fruit like pineapples.

    • Clearly he's never tried cutting down gorse. It's a mass of sharp thorns on tough woody stems that even goats will only eat as a last resort. You would have to pay me a heap of money to spend my days harvesting that stuff.

      'Marginal' land that means places too steep or rocky for mechanised farming. So I can only assume that he's planning to reinstate prison work gangs, sending out convicts to harvest gorse bushes. Nobody else would want to do it.

      Oh you silly man ... that's what we import third worlders for! It's a sign of how sensitive and caring we are.

  • "Scotland has little arable land." - umm,. so how does it manage to be a net food exporter then? Just another bit of Yoon propaganda from the Guardian newspaper masquerading as science. #DissolveTheUnion
    • "Scotland has little arable land." - umm,. so how does it manage to be a net food exporter then?

      Intensive agriculture and a small population.

  • If this is so good why hasn't anybody done it in the last ten thousand years, or so?
    • Subject: WTF is science today???
      If this is so good why hasn't anybody done it in the last ten thousand years, or so?

      Because they didn't have today's science, and with it cost/labor-effective means of extracting the protein. Instead they converted such plants into pigs or goats, which is possibly less efficient.

  • Because who doesn't want a delicious bowl of protein, synthetic aminos, vitamins, and minerals [youtube.com]. It's everything a body needs.

  • This species is native to Western Europe. It is just moving north due to climate change.
    What should it be good for to fight that?
  • Feeding people is not, and never has been the problem. If there is hunger, look to the local political system. It is virtually always a problem of local corruption. As often as not, when international aid is sent, the local politicians claim it, and sell it on the black market, instead of feeding their population.

    Gorse in Scotland is a plague, because livestock will not eat it. If you want to use land productively, you have to remove the gorse. However, this ought to be a one-time activity (because gorse

    • Feeding people is not, and never has been the problem.

      Feeding people continues to be the problem. Producing enough food for them, on the other hand, is not the problem (and hasn't been since the so-called green revolution.) The problem is feeding them what they want to eat sustainably. This will do nothing to address that, since nobody wants to eat gorse protein.

      In the USA we throw away more than enough food to feed not only all of our homeless, but probably several other countries' as well. We do this so that people can have their choice of food year round, b

  • I tried it but I became gloomy and depressed, and worse my tail fell off and I had to put it back on with a nail.

  • A perfect source of protein for Vegans. They can petition Morningstar Farms to use it in their sausage patties. They already made them massively worse to appease vegans last year, so may as well go further.

    Sorry for the rant - but a breakfast food that helped wean me off eating bad things for protein in the morning was changed so massively that it makes me (and most folks who liked it) to gag all in the name of going vegan. A bit of egg white and some milk was too much of a cross to bear for them.

  • To quote the 1967 Dr. Doltittle (a vegetarian) played by Rex Harrison:

    "I eat every flowering shrub there is except for gorse."

    (Earlier in that sequence he also said he wouldn't eat horseradish lest he upset the horses.)
  • This is a bit of local history. The lore is that they tried to burn it to get rid of it. But the real story is more accidental. But it did burn down a town of 1600 because they let it grow among their buildings. Might be useful for fuel! https://www.oregonhistoryproject.org/articles/historical-records/bandon-fire-1936/ [oregonhistoryproject.org]

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