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Re:Artificial photosynthesis can produce food without sunshine by imtringued on Saturday July 02, 2022 @08:20AM (#31958425)
Why not skip the plant and go straight for artificial starch synthesis? Producing food without sunshine really isn't a problem that needs to be solved. If there were free lunches plants would have evolved them.

https://newatlas.com/science/artificial-synthesis-starch-fro...

Re:Artificial photosynthesis can produce food without sunshine by kibwen on Saturday July 02, 2022 @09:44AM (#31958918)
> If there were free lunches plants would have evolved them.

Well, chlorophyll evolved for survival, not to maximize yields for human agriculture. In the wild, plant growth is bottlenecked on the availability of water and nutrients, and they tend to get way more sunlight than they can use. This is shown by the fact that chlorophyll is green, so plants are actively reflecting away most of the energy from the sun (where green is the dominant wavelength). If wild plants benefited from absorbing all available sunlight, they would be black (or, given the specific chemistries involved, probably a deep purple). In artificial conditions, perhaps one could do better.

Which isn't to say that artificial starch poduction isn't still the way to go, but even in the grim darkness of the future where we're all eating starch capsules for every meal, people will still want a tomato once in a while.

Re:Artificial photosynthesis can produce food without sunshine by sigmoid10 on Sunday July 03, 2022 @06:16AM (#31966559)
>most of the energy from the sun (where green is the dominant wavelength)

That's actually a common misconception that even some older physics textbooks get wrong. You could argue with the same logic (and the same math, just using the frequency domain black body description) that the peak output of the sun is in the infrared. But the truth is that there is no such thing as a dominant wavelength in a continuous density distribution spectrum.

See e.g. here for more info: https://www.oceanopticsbook.info/view/light-and-radiometry/l...

Re:Artificial photosynthesis can produce food without sunshine by verisimi on Saturday July 02, 2022 @10:19AM (#31959192)
Well, I'll know who to blame when all the tomato is gone! :)
Re:Artificial photosynthesis can produce food without sunshine by nine_k on Saturday July 02, 2022 @08:44AM (#31958560)
Plants have hard time evolving parts that require large pieces of crystalline silicon.

If we can boost plant production using electricity generated by solar panels next (or above) the fields or greenhouses, it could be great. An not only on Mars or Moon, but here on Earth, too.

Faster growth may mean two crops per year instead of one in some places. Acetate is easy to store, so it's a good way to apply the excess solar output during day, and excess nuclear output at night time.

Re:Artificial photosynthesis can produce food without sunshine by mlyle on Saturday July 02, 2022 @12:47PM (#31960542)
> An not only on Mars or Moon, but here on Earth, too.

I think it'll be niche on Earth, but maybe it has a role to play-- e.g. for food security for cold nations that already rely on greenhouses and could improve yields.

Re:Artificial photosynthesis can produce food without sunshine by nine_k on Saturday July 02, 2022 @12:52PM (#31960587)
Most of Europe can only have one crop of many cultures per year. What if some of them could grow faster and fit two crops into the summer? This might be useful not only in places like Sweden, but even in places like France.
Re:Artificial photosynthesis can produce food without sunshine by mlyle on Saturday July 02, 2022 @01:46PM (#31960936)
Maybe. Doing it once in the lab and making it look like the economics might kind of work for a broader area isn't very convincing to me.
Re:Artificial photosynthesis can produce food without sunshine by kurupt213 on Saturday July 02, 2022 @05:14PM (#31962491)
This is how you grow a winter crop in a warehouse. Right now we are burning tons of fuel to ship fresh produce between northern and Southern Hemispheres depending on which is experiencing the growing season. This could be the path to local fresh produce year round. Possibly more environmentally friendly than the current method.
Re:Artificial photosynthesis can produce food without sunshine by formerkrogemp on Saturday July 02, 2022 @07:53PM (#31963631)
Iceland has huge greenhouses. Norway is exporting their indoor aquaculture expertise and investments to other countries. We're getting there but not quickly enough.
Re:Artificial photosynthesis can produce food without sunshine by abandonliberty on Saturday July 02, 2022 @11:22AM (#31959789)
While I share your dream of no longer needing to eat, we still can't really live on Soylent. Our understanding of nutrition is growing, including what we consider as nutrients and how they're absorbed/interact.

One of the hypotheses for the obesity epidemic is a reduction in essential nutrients, resulting in a lack of satiety.

Understanding of prebiotics, phytonutrients, and ultratrace minerals are relatively new, and we're still learning how different forms of fat have different impacts.

In the meantime, improving existing yields could be really helpful.

Re:Artificial photosynthesis can produce food without sunshine by kurupt213 on Saturday July 02, 2022 @05:38PM (#31962702)
If this scales it could be a much more sustainable way to grow livestock feed and biofuels
Re:Artificial photosynthesis can produce food without sunshine by oifjsidjf on Saturday July 02, 2022 @09:39AM (#31958884)
The problem with starch is that it's empty energy for a human.

Zero micronutrients, only carbs.

Humans need micronutrients, fats and some protein to live.

Carbs are optional.

Since starch is pure carbs this means that a diet high in artificial starch will just fatten you up while making you nutrient deficient.

It's only use if for extreme hunger prevention.

But humans raised on that kind of a diet will be deficient.

Re:Artificial photosynthesis can produce food without sunshine by onlyrealcuzzo on Saturday July 02, 2022 @02:12PM (#31961095)
You can almost get all the micro nutrients you need for the day from a tablespoon of dried watercress.

If micronutrients are ever a problem, we are really screwed on macronutrients.

Re:Artificial photosynthesis can produce food without sunshine by hgomersall on Saturday July 02, 2022 @03:31PM (#31961646)
This sort of thinking has led to people consuming Huel as their sole food source. To be clear, we're a long way from understanding all the interactions of various foodstuffs and their nutrients on our health and wellbeing. That's even before we consider the mental health benefits that a varied diet brings.
Re:Artificial photosynthesis can produce food without sunshine by Gravityloss on Saturday July 02, 2022 @08:26AM (#31958456)
Yes, it's a bit like the problem with biofuels and internal combustion engines - there's a lot of waste and destruction [1]. Solar panels with electric cars are a lot more direct and efficient route for the same mobility.

There should be billions pouring into artificial food. It would solve so many problems that we have.

1: Ocean dead zones for example: https://www.vims.edu/research/topics/dead_zones/index.php

Re:Artificial photosynthesis can produce food without sunshine by Paedor on Saturday July 02, 2022 @02:12PM (#31961099)
The best tradeoffs for humans are also different from the best for plants. Even fully domesticated ones like wheat still have to put energy into completely regrowing themselves every year, fighting pathogens, reproduction machinery... I'd put decent odds on synthetic production being massively more efficient.