3D-printed carrot does not rely on large areas of land or maintenance costs, can be cheaper

cyu@sh.itjust.worksbanned from community to Technology@lemmy.world – 173 points –
A new kind of 3D-printed carrot, in the words of its Qatar-based inventors
aljazeera.com
87

Why would I want my lab-grown carrots to be carrot shaped exactly? As someone who eats quite a lot of carrots, I'd rather have my lab-grown carrots be rectangular-prism shaped for easy stacking.

Good luck inserting a rectangular-prism up your butthole.

I'd say a sense of continuity and familiarity. It'd be weird if you're suddenly told to eat a cube that can fulfill all of your nutritional needs when you've been eating foods of variable shapes for so long.

As someone who has diced, julienned, and sliced thousands of pounds of carrots, let me assure you that most people are not eating carrot shaped carrots.

I will eat the nutri-cube and I will like it. I am proud that we're finally entering the sci-fi era of this dystopia

My vast disappointment for the conspicuous lack of jetpacks cannot be salved save by a home nutri-cube dispenser.

I have literally fantasized about the "food cube" that fills nutrional needs for a meal! "What do you want to eat?" will be a question of the past! All you choose to consume is the B̷̛̛̰̮̥͕͓̺̔̽̉̽̃̾ͅã̸̛͍̌̓̊̓̊̆̈́͐̕͝͝r̶̢̺͍̺͓̖͐̂

We've had nutri-cubes for a long time now. These are actually pretty good, IMO.

Look how happy this man is with his government mandated nutrition cube:

You will not ask for any other nutrition. Thank you fellow citizen, this makes me very happy

Cutting them changes their flavor. They're not as good when you cut them.

That makes zero sense.
...it's absolutely true, though. Carrots are so much better eaten whole

They do oxidize a bit when you cut them. They just don't turn brown like apples and potatoes. It makes them more bitter.

Different parts of the carrot taste different. The "core" tastes different to the outer part. So by cutting it up you often change the ratio between those two tastes

And better packing capabilities. Takes less room, fits more in a box = saving on transportation.

IIRC, freight companies tend to charge based on weight rather than size. That's why designs for square liquid bottles have never taken off.

I feel like it would actually just be easier to make vertical growing factories for vegetables than do the same thing but worse by still growing the material, and then making them vegetable shaped.

Like, those cells will require the same nutrients and same growing conditions, and they naturally 3D print themselves into the shape of themselves.

Like, those cells will require the same nutrients and same growing conditions, and they naturally 3D print themselves into the shape of themselves.

They'll also naturally use the nutrients and energy to 3D print stuff that's not useful to humans, like leaves, roots, flowers, etc. Basically this is how vat grown vegetables, meat, etc, can potentially be more efficient than the typical approach.

Do we need to be more efficient? We have the resources to feed everyone on Earth and have leftovers we just aren't allocating it correctly.

We could also increase efficiency even further by reducing meat/dairy consumption. Lab grown stuff feels like an over-engineered tech bro solution to a societal problem

Do we need to be more efficient?

I mean, it's usually a beneficial thing. Using less resources (including land) to produce the same amount of food is probably going to mean less environmental damage. In the case of switching to vat grown meat it also means not torturing billions of animals every year.

We have the resources to feed everyone on Earth and have leftovers

Sure. No one starves because the food just isn't on this planet, they starve because the people who have it won't give it to them. That said, we're also not using resources very sustainably so saying we produce enough food currently isn't the same as saying we can continue this way.

We could also increase efficiency even further by reducing meat/dairy consumption.

I don't eat any animal products so you can probably guess this is something I'm strongly in favor of as well!

Anyway, I was just responding to what I quoted not specifically arguing for 3d-printed foods. Depending on how it's implemented, it may or may not be better environmentally than the status quo

That logistical problem is something this could potentially fix. You don't ship individual carrots/cucumbers/lettuce/whatever to stores in the city. You ship the base nutrients in giant amounts, grow what you want, and bring them over to the store down the block.

Logistics is boring, but it rules everything.

We do not sustainably have the resources to feed everyone. Even if things were allocated more evenly, we would still be looking at water shortfalls and over usage of land.

So let's continue to allow some people to have more than enough while others have none. No sense in trying since @SeaJ@lemm.ee said it could not happen.

Chain of production. Ask, where do the materials to “mimic the soil in the lab” are coming from? What are the required materials to manufacture the nutrients and substrate for plant cell reproduction? Contrary to our usual perception, lab materials aren't magically put on shelves by lab faeries.

You'll usually find that it is fossil fuels. Since we currently don't have a way to mass produce nutrients with sustainable sources (specially ammonia as the source of nitrogen). They're distilled from oil. Other nutrients are taken from other agricultural produce, that still need land and maintenance to be grown then processed into the materials to make the growth mediums. They'll say that they will recycle and use produce refuse, but usually this is thrown away by industrialists because the thing is expensive and difficult to recycle from bad materials. Another source is mining, and we all know how we are doing ethically on that front.

At the end, the cost reduce is usually just the product of pushing costs to atmospheric pollution and human exploitation. At a large scale with mass production, the net cost surges up again to the cost of just growing the damn carrot on the ground. Everything looks cheaper on the lab. Nothing can come from nothing.

"Can be" is doing a lot of work in that title.

There are sound reasons to think that growing meat in the lab will eventually be more efficient than growing animals. You don't have to support the metabolism of the whole animal and everything it eats. Not to mention the reduction in animal suffering.

But lab grown vegetables? What's the point?

It says exactly what the point is in the article: reducing dependence on imports when there's not enough arable land to feed a population.

Urban farming is the way to go for that. Modern crop plants are really very efficient organisms. It is doubtful that lab growing cells (which is hardly free of overhead) can come anywhere close to competing with that.

Urban farming . . . in Qatar?

But I agree that this should be compared with hydroponics systems with efficient water recycling.

I guess the point is to be able to grow it in a desert, but I think it should still be cheaper and easier to grow it indoors hydroponically instead... Unless maybe it uses less water? But hydroponics can recycle all the water used so I don't think that's a huge advantage.

In this case, growing them in Qutar, where agricultural land is at a premium.

I can't believe that this is economically viable. Strange times.

Less than a dollar per kg! I think that's honestly the most impressive part.

Carrots are 50 pence a kg right now. So it's not very competitive. However, the current price probably relies on subsidies.

And the 3d printing tech is not mature so would come down a lot as the process scales up.

Less than double the price and somehow that's not competitive? Guess organic isn't viable then.

Carrots are fucking easy to grow. You can grow them through winter. I need to repair the domes on my planters but I had them year round for like 4 years until my dad adopted the local raccoons.

I hope it tastes better than the 2kg bag of carrots I had bough for yesterdays dinner. I peeled half of them, and each and every of it tasted like basically nothing. Except for the last I peeled, which was bitter.

United Nations report, published in July, 735 million people are currently facing hunger

This silly way of bringing in the issue of world hunger, while it is still just a super small and super rich country where some students play with crazy technology.

Perchance this could mean we can get carrots of different shapes maybe a carrot shaped like …mm

Carrots are going to be shaped adverts. It's the invariable enshitfication, coming to your Sunday roast soon.

You've been able to shape fruit for basically it's entire existence. Put a watermelon in a box while it's growing and it comes out square. Put it in a Halloween skull and you'll get a skull shaped melon

Someone please explain to me how 3D printing vegetables could be cheaper or more efficient than just growing them?

You can stack printers, you can't stack farms. Efficient for space, power is gonna be a stretch though.

I was hoping for a turnip. I have a cunning plan...

Square carrots would be much more efficient. They'd be easier to cut, too.

But how are the carrot cells grown? Either using light or some kind of agricultural product I’m sure. There’s no such thing as a free lunch. Literally in this case.

But how are the carrot cells grown?

Hint: the article tells it (to those who read it)...

Did you read it? It doesn’t explicitly answer my question.

I have the same question. They said other veggie printers (which are a thing, I guess) use pre-grown fruit or veggie matter that has been turned into some kind of slurry, but it doesn't specifically state what kind of "ink" this printer uses except to say that it is an "edible material" subjected to UV light. I have concerns as to what that edible material may be. Also, if it's already edible, is there any point in rendering it into the shape of a carrot?

They say the carrot cells are already grown for laboratory uses. Food scientists get up to weird stuff and they need standardized materials as basic building blocks. So there are already facilities that make this stuff and they bought it.

In my experience with undergrads, they probably heard "Oh wow, lab grown carrots are a thing and you can buy them!" and they bought them from a food science lab supply company that made them from pureed whole carrots, but they told the reporter it was lab grown.

My question is what uv polymer did they use in that carrot printer goop that is "food safe"? When I used MSLA printers, those resins were noxious and toxic AF. I used a full face ventilator with an organic carbon filter because I didn't want to get poisoned by it.

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Add some gold around it, and you have a top tier food source right there!

The only advantage this has is you can make carrots into fun shapes. They’re not that hard to grow.

The research is from Qatar, I imagine it's a lot harder to grow enough carrots in sandy deserts and bedrock

I don't think that there's an immediate application for specifically making carrots, because I doubt that the economics work, but I can imagine a world where we manufacture a lot more food than we do today.