How to unboil an egg - Eleanor Nelsen

TL;DR

By subjecting boiled egg whites to mechanical energy through spinning, scientists have discovered a way to reverse the denaturing process, allowing the proteins to refold and return to their original unboiled state.

Transcript

It's so obvious that it's practically proverbial. You can't unboil an egg. Well, it turns out you can, sort of. What thermal energy does to the eggs' molecules, mechanical energy can undo. Eggs are mostly made of water and proteins. The proteins start off folded up into intricate shapes, held together by weak chemical bonds. Adding heat disrupt... Read More

Key Insights

• 🪺 Boiling an egg disrupts the weak chemical bonds holding proteins in their folded shapes, resulting in a solid mass that is a boiled egg.
• 👻 Mechanical energy, such as spinning, can reverse the denaturing process and allow proteins to refold and return to their original state.
• 🈸 The unboiling technique has potential applications in the pharmaceutical industry to refold expensive proteins and improve drug production efficiency.
• 😒 The use of lubricants like urea in the unboiling process helps proteins glide past each other, facilitating refolding.
• 👻 The spinning technique works by creating sheer stresses that repeatedly stretch and contract the proteins, allowing them to snap back into their native shapes.
• 😃 Bigger and messier proteins may require additional assistance, such as attaching plastic beads, to induce folding during the unboiling process.
• 🐚 The unboiling technique is not applicable to whole eggs in their shells due to the cylindrical chamber requirement for solution spreading.
• 💱 Unlike boiling, which only changes protein shape and bonds, most cooking processes involve chemical changes that are harder to reverse.

Questions & Answers

Q: Can you unboil a boiled egg?

Yes, it is possible to unboil a boiled egg by subjecting the egg whites to mechanical energy through spinning. This process allows the proteins to refold and return to their original state.

Q: How does the unboiling process work?

The unboiling process involves dissolving boiled egg whites in a water solution with urea, which acts as a lubricant. The solution is then spun at high speeds, creating sheer stresses that stretch and contract the proteins, allowing them to refold into their native shapes.

Q: What are the potential applications of this unboiling technique?

The unboiling technique has the potential to revolutionize protein refolding in the pharmaceutical industry. It can help untangle and refold expensive proteins, making the production of drugs faster, cheaper, and more accessible to a larger population.

Q: Can this unboiling method be applied to all proteins?

While this unboiling method works with various proteins, larger and messier proteins can be more resistant to being pulled apart. To overcome this, scientists attach a plastic bead to one end of the protein to induce extra stress and encourage folding.

Summary & Key Takeaways

• Boiling an egg disrupts the weak chemical bonds holding the proteins in their folded shapes, allowing them to unfold and form new bonds when heated.

• Scientists have found that by dissolving boiled egg whites in water with a lubricant called urea and spinning the solution at high speeds, the proteins can be untangled and refolded.

• This technique has potential applications in the pharmaceutical industry for refolding expensive proteins, making drug production faster and more cost-effective.