Why your teeth feel rough after eating spinach

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You probably recognize it: just eaten very tasty spinach in a lasagna , salad or in one of the other many recipes that are possible with spinach. And yes, you’re done and this time it’s a hit: a souvenir in the form of a rough feeling near your teeth. Once and for all: this is why spinach can give you such a rough feeling.

Stiff spinach

The biggest ‘culprit’ in this case is oxalic acid, according to professor Cor van Loveren of the Academic Center for Dentistry Amsterdam, during an interview with the NRC . A chemical reaction occurs when oxalic acid mixes with calcium.

Healthy chips: spinach chips

Saliva

Your saliva also contains calcium, we read in Quest . As soon as you put the spinach in your mouth, the oxalic acid binds to the calcium, creating calcium oxalate. This substance produces crystals that cannot be dissolved in water. That’s why they stick to your teeth. So that’s that stiff feeling when you slide your tongue over your teeth after eating spinach (which can also be from the freezer).

Rhubarb and cocoa

Oxalic acid is not only found in spinach. It is found in more vegetables and related products, such as rhubarb, cocoa beans and kale. Incidentally, it seems that the more often you chew – which is actually a good thing, chew a lot – the more of those crystals are formed. Chewing less spinach = less stiff teeth.

spinach pancakes

What can you do

Well, we can imagine you don’t want to swallow a whole head of spinach without chewing every bite, so what else could you possibly do? We also read it in the great cookbook ‘ Always Sunday ‘ by Wil Demandt: adding a little chalk powder works wonders. It counteracts the chemical process so that you can chew it happily. So no more stiff teeth worries, for example when you make these pancakes or this pasta with salmon .


Source: Culy by culy.nl
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