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Salt From Plants
Makarand writes "Researchers in India have been able to
extract salt from a plant source for the first time.
The plant salt comes from a salt-loving leafless shrub, salicornia brachaita,
that grows under high-salt conditions accumulating salt in its tissues.
This plant's cultivation was being studied as a possible solution to
reclaiming salty soil along coastal areas. While regular sea salt is predominantly NaCl, this plant salt has
salts of potassium, calcium, magnesium and also nutrients like iron and hence could be marketed as a health salt."
a salt-loving leafless shrub
you mean a potato?
Great Atrocit
Out of curiosity, what is a "health salt"? I've never heard of such before...
(oh, and for some reason, this keeps coming to mind: http://www.angryflower.com/nacl.gif.)
--
viqsi - See "vixen"
If we do not change our direction we are likely to end up where we are headed.
"Our interest in salicorni cultivation was mainly to reclaim salty soil."
Java: the COBOL of the new millenium.
It's not so much new ways to get salt. (Not withstanding the fact that this isn't "table salt" to begin with...) It's a way to remove salt from the soil that would otherwise prevent more useful crops from growing there. Ever hear the expression "Salting the earth"? That's one thing waring tribes did to eachother's land... because you can't grow crops in salty dirt! (If you don't believe me, try watering your houseplants with seawater)
This reminds me a lot of the mineral absorbing plants talked about here a long while ago.
As for what you might actually use the potassium, calcium and magnesium salts for isn't really an issue. I have no idea where or if these chemicals are used for anything, and you're right: there's probably easier ways to get them if they are.
=Smidge=
Maybe the reject your stories because you abuse the caps lock.
The thing I don't get is how this is claimed to be the first time this is done. Years ago, on a biology class field trip in southern Indiana (USA), a teacher pointed out a plant that took up salt from the soil, and said that the pioneers used to use it as a seasoning, and would sometimes toast (open burning would leave NaO instead of NaCl) it to ashes and leach the salt out of the ash for winter use.
That said, it's still pretty cool that there's a plant that grows in heavily saline soil and can be used to desalinate it. Maybe they can get a cold-climate variety developed and reclaim the marshes around Hudson Bay?
But the story isn't about reclaiming the ground with the plants, the story is about how they have a new (patented) way to extract salts from the plants, and about selling the salt to offset the cost.
My point is, there's very little money in selling salt.
I've had enough abrasive sigs. Kittens are cute and fuzzy.
Then the story was written by people who didn't bother to think first. You're right; any plan to sell the salt for a profit will fail. Even if the ideas of using this as a salt production method are used and fail, somebody will probably use this as a way of reclaiming soil and selling the salt to defray the costs. Therefore, it's nice to think about. And who knows, there may be something to the "health salt" ploy. With enough advertising, perhaps people would be dumb enough to fall for it....
--it's the totality of the process, and the potential. First, this is India, any job is a good job there,and right now that's a lot of wasted space that could be farmed. After the salt sucker plants are used for enough seasons, it's back to normal farming with the reclaimed land. The plants produce a salt with micronutrients that could be packaged as a "seasoning salt" in the spices section of the grocery store, or perhaps put into capsules with some other stuff as a dietary supplement, again, useful. The plant also produces some sort of oil in decent extractable quantities, but the article didn't say if it was edible, or useful for something else, my guess is it's useful for *something* practical, as most vegetable oils are. Fuel if nothing else, maybe biodiesel for their tractors? So it's a win/win/win/win deal for them. The patent idea I have no clue on, unless they invented a unique process for extraction. Lot of prior art on using plants for whatever.
The article said they were primerily looking for a crop that would extract salts from the soil to make it habitable for planting food and other money producing crops. It said they filed for a patent on the process for extracing the salt form the plants. Nowhere did it say they plant to make "salt farms" and try to make money selling the salt they could extract with their newly developed process.
It said they expect the total cost of the "vegitable salt" to be around 10-12 Rupees per Kilogram... which works out to about 10 cents (american) per pound, give or take a penny.
I don't know what the price of refined salt is in India, but I'm guessing that won't be very competative. The only way they're going to sell it at that price is by marketing it as a dietary supplement.
They DO mention, however, that the plants provide an edible oil from thier seeds, so I'm sure the intention here is more like: "Hey look, one more thing we can sell to make desalinating land more worthwhile!" (As if gaining usable farmland from wasted fields wasn't good enough, but I dunno what their situation is)
=Smidge=
There's an Australian plant called Salt Bush that does this - the leaves actually have salt crystals on them.
They can be used to reclaim over-irrigated soil...
There's lots of cool stuff going on right now with bioremediation. My roomate's looking for a postdoc position and one of the labs he was looking at was using bacteria to gather up heavy metals. It was pretty slick: the bacteria were engineered to express proteins designed to bind metal ions on their cell surfaces. They'd eventually have so much metal bound that they would begin to fall to the bottom of your sludge pond or whatever your body of contaminated water was in and they could be harvested. For at least one metal (Mercury? Cadmium? Gonna hafta ask him.) it was looking like the settled-out engineered bacterium-laden sludge from a contaminated site was more enriched in the metal than mined ore!
They should try to extract salt out of the plant "lucern". This plant grows well in salty soil, and is used to combat soil salinity here in Australia.
:-)
Apparently cows eat it too
The word potassium is derived from the word potash, literally meaning "pot ashes". The word alkali comes from the Arabic qalay, "to fry or roast in a pan", and al-qalay , "the substance that had been roasted." The English word soda is derived from suwwad, the Arabic name of a plant of which the ashes are rich in sodium carbonate (paraphrasing from the bottom of this reference). This most recent effort is most certainly not the first time salt has been extracted from plants, and in fact is such an ancient practice that it has given rise to the names of some of the alkali metals.
"I'm so moist I'm sticking to the leather." -Kermit the Frog on The Late Late Show
The article said the oil was edible.
I've had enough abrasive sigs. Kittens are cute and fuzzy.
When salt was traded for gold and the Soninke ruled the Ghana empire.
ahh, missed it then. Read it, musta forgot or didn't see it, remembered "oil" though.. Many dozens of articles a day, I read off of 6 to 12 sites,not just slashdot, man, I LIKE tabbed browsing. thankee. there ya go then, another product for them. Of course edible doesn't always mean *tasty*.....
I could remove the salt from my own urine and market it as a "health salt" - the health food industry is one of the biggest scams out there.
All I have to do is make a few vague claims, and dream up some useful obfuscation ("... extracted from the very life process that it is intended to promote, our exclusive uri-salt promotes healthy kidneys....") and I'm rolling in money.
www.eFax.com are spammers
to the list of useless oxymorons, which I guess is an oxymoron itself.
Because they are from the same department like the headlines:
NEW SPECIES OF TROLLS FOUND IN HIMALAYA
or
LOUSY NEWS SOURCE DISCOVERED - SIX COCKROACHES DIED
THis would be really welcome in Oz, where something ridiculous like 45% of arable land is affected by rising salt. And it would give the farmers an alternative source of income while there land is regenerating. Win - Win
-- Karma Karma Karma Karma, Karma Chameleon - Boy George
yep. but it wouldn't remove the salt from the soil, which is a much more useful reason for having these plants.
"When I grow up, I want to be a weirdo"
You can buy fresh salicornia at Gentle Strength, a bit west of ASU. It is really quite salty. They suggest adding it to salads, etc.
(Disclaimer: I don't work there)
The thing is, if this plant extracts all salts from the soil, then there's no particular reason that the salt from the plant will be particularly healthy; there will be sodium chloride, some other stuff that might be healthy, and perhaps also some salts which aren't. Which salts accumulate from chemical fertilizer use? Probably something other than sodium chloride, right?
Maybe the thing to do when reclaiming tracts of farmland is to gather up all the salicornia and throw it in the ocean; this is nature's place for excess salt anyway, and such dumping would be nowhere near as bad as the other kinds of stuff we dump there (garbage, nuclear waste, oil, etc.) It's following an example set by nature, rather than going against the grain - purify the land, and dump the salt there. Dumping it in the food supply could have other bad consequences; for one thing, after being digested it would then end up in the sewer, and then it should be extracted again, to avoid polluting the land or water again; and secondly, people probably eat more salt than they should as it is; encouraging them to eat salt from this new source, even if it is mostly sodium chloride, as if it were some new health supplement, is a really bad idea.
Since gold is a "noble" metal I imagine it would be hard to craft a protein that could bind to it.
(one reply)Maybe the reject your stories because you abuse the caps lock.
Nah. It's actually a secret conspiracy against abnormally sized critters by slashdot editors. Besides- giant jellyfish? Naaaasty- not to mention, if they didn't exist, I wouldn't have had to read that boring-as-watching-paint-not-dry book The Old Man and the Sea. Tiny seahorses? They're cute and all, and feminists like 'em(Daddy takes care of the zillion little Juniors, not Mom, until they're fending for themselves), but....beyond that, they're just basically...smaller than average fish. Now, if you find something about Tiny Dolphins, Now you're talking- they're smart, cute, funny, and, at least around humans that behave themselves, downright good-mannered and as curious about us as we are them. Bite-size, they'd probably make the world's most awesome pet(hey, the competition is a critter whose greatest trick is floating upside down to let you know they're dead.)
Now, plants sucking up salt so you can use the land? Useful AND cool, and even the plant huggers would have a hard time finding a problem with it.
Please help metamoderate.
http://www.akzonobelsalt.com/english/abo/prf/home. htm
.
.
AKZO is one of the largest salt producers in the world,
they make millions off their premium salt used
in medicine, dyes for clothes, and many things you
would not expect
At one time they were the largest producer in the world
Peace
Ex-MislTech
google "32 trillion offshore needs IRS attention"
I agree with you that desalinization of the ground is a great application. But, if that't the only point of the article, why go to the trouble of extracting the salt from the plant?