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A Science-Backed Hack To Get Rid of Cucumber's Bitterness: Here's How
3 days ago
Figure 1. Rubbing the ends of the cucumber with salt until foamy to get rid of its bitterness.Photo byfood-hacks.wonderhowto.com.
Cucumbers, like many other members of the gourd family, contain naturally occurring compounds called cucurbitacins. These compounds are responsible for the bitter taste some cucumbers have.
From an evolutionary perspective, cucurbitacins serve as a defense mechanism, deterring animals from feasting on these plants. The bitterness is usually most concentrated at the ends of the cucumber—precisely where animals in the wild would begin nibbling.
How to Get Rid of This Bitterness
One way is to first sprinkle salt on a cucumber and rub the ends together. This action triggers a process known as osmosis.
The salt draws out the cucurbitacins from the cucumber cells, causing a white, foamy fluid to appear (see Figure 1 above). By scrubbing the ends, you encourage a white fluid, which contains the bitter compounds, to release. This method prevents the bitterness from spreading to the rest of the cucumber.
For the best results, it’s recommended to rub the cucumber ends together before peeling it. Once you’ve rubbed off the foam, give the cucumber a quick rinse to remove any residue.
Not all cucumbers will have the same level of bitterness. The amount of cucurbitacins present depends largely on where the cucumber was grown and the water it received.
Cucumbers grown in conditions with ample water supply tend to be less bitter. Those cultivated in more challenging or variable environments, like wild or organic cucumbers, are often more bitter due to stress factors such as drought.
Additionally, there’s another player in the game: an enzyme called elaterase. This enzyme breaks down cucurbitacins by hydrolyzing them, a process where the compound and water interact, neutralizing the bitterness.
Some cucumbers, especially those bred in controlled environments, may contain more of this enzyme, reducing their bitterness naturally. So, while rubbing the ends may help with some cucumbers, others may not require this step at all.
Conclusion
While the effectiveness may vary depending on the cucumber, the salt-rubbing method works by drawing out bitter compounds, at least to some degree. So, if you’ve been scrubbing away all these years, as your grandmother told you to, you can rest easy knowing there’s a scientific basis behind your actions.
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