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TIL Black mold is used in the manufacturing of Citric Acid

The substrate for the fermentation is a carbohydrate, usually molasses or a sugar, such as raw beet, refined beet, or cane sugars, or a syrup. … Certain inorganic nutrients, such as ammonium nitrate, potassium phosphate, magnesium sulfate, zinc sulfate, and potassium ferrocyanide, are added. The pH is adjusted to between 3 and 7, depending on the carbohydrate source. Sterilization may be batchwise or continuous; the latter uses less energy and is usually faster. After sterilization, the temperature is adjusted as required. The surface of the sterile substrate in the pans is inoculated with A. niger spores, which germinate and cover the surface of the liquid with a mat of mold. After two to three days the surface is completely covered and citric acid production begins, continuing at almost a constant rate until 80-90% of the sugar is consumed.

pubchem.ncbi.nlm.nih.gov/compound/citric_acid#sec…

en.wikipedia.org/wiki/Aspergillus_niger

Edit: I’m going to add the wikipedia page for citric acid since someone pointed out that I was confusing the two.

Citric acid occurs in a variety of fruits and vegetables, most notably citrus fruits. Lemons and limes have particularly high concentrations of the acid; it can constitute as much as 8% of the dry weight of these fruits (about 47 g/L in the juices[11]).[a] The concentrations of citric acid in citrus fruits range from 0.005 mol/L for oranges and grapefruits to 0.30 mol/L in lemons and limes; these values vary within species depending upon the cultivar and the circumstances under which the fruit was grown. Source

DrBob ,

The black mold people are concerned about in buildings is stachybotrys. They type species is stachybotrys atrum. Totally different mold.

PeleSpirit OP ,

Still not great:

OTA, a clinically relevant mycotoxin, can accumulate in human tissue and cause a variety of serious health conditions.[43] Potential consequences of OTA poisoning include kidney damage, kidney failure and cancer but the United States Food and Drug Administration (FDA) has not set maximum permissible levels of OTA in food unlike the EU that set maximum permissible levels in a variety of food products

CrayonRosary ,

Your post title is now a lie. Fix it or delete the post.

DrBob ,

I take a lot of that mold work with a figurative grain of salt. I’ll confess I’m not familiar with the aspergillus literature, but stachybotrys risks are way overblown. The concerns are driven by courts rather than the medical literature.

The last time I had a deep dive into it there was a single case of stachybotrys poisoning which occurred when a farmhand fell into a silo of moldy hay. He had a complete recovery within 10 days. That was deep dive was 15 years ago so maybe something else has come up?

All of these molds are present in the environment. If you spend any time hiking in the woods or around hay or barns you are exposed to reasonably high levels.

Treczoks ,

Yep. It really looks funny. You have those stainless steel tubs in shelves with that black pelt of Aspergillus Niger mold growing, and you know the stuff they make will end up in about each and every convenience food product in the world: Bread, soda, pizza, instant soup, pasta sauce - basically everywhere.

FlyingSquid ,
@FlyingSquid@lemmy.world avatar

Don’t give landlords ideas. “That black mold is going into cleaning solution! You should be honored!”

PeleSpirit OP , (edited )

Right? I hadn’t thought of that. I just always thought *citric acid was you know, made of citrus.

SpaceNoodle ,

I think you’re trying to say “citric acid.”

PeleSpirit OP ,

I think you’re right, lol. I was reading a blog that was trying to sell herbal remedies and was talking about how it was originally from citrus and I think I confused the two names. It turned out to be true information since I used their source for NIH.

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