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The Food Lab: A Better Way to Caramelize Onions (Plus, French Onion Dip!)
Hey Kenji -- great post as always! Two things though -- I think you have a typo as you said there's 5 types of onions yet listed 4. Also, you discuss Maillard browning, but I would assume onions would only undergo caramelization as Maillard are reactions between proteins and sugars; unlike meat, onions don't have much in the way of protein. Thoughts?
Gluten-Free Tuesday: Sweet Tart Dough
This looks great! I can't wait to try it -- thanks!
Would You Eat a Non-Browning Apple?
In general, I am not fond of genetic manipulation by humans. It's one thing to selectively hybridize/pollinate/breed a species for desired traits; it's another thing to intentionally knock-out a gene sequence on the DNA, or add in a foreign gene sequence. While we know this gene creates X trait, there are other minor, less obvious traits associated with a gene which we aren't yet aware of. So, I feel that our technology is largely ahead of our knowledge. In other words, just because we have the ability to do something doesn't necessarily mean we should do it.
Now, with regard to these apples, I agree with many previous posters that this is a stupid use of this technology. Golden Rice, which has saved many people from certain death and blindness, or genetically modified bacteria to produce insulin are good uses of this technology. But cosmetically prettier apples? Yeah, that's just a dumb reason to manipulate nature.
Further more, what is the manipulation that prevents them from browning? Apples brown due to the enzyme polyphenol oxidase which reacts with epicatechin and procyanidin to produce a brown color (similiar to chocolate and brown tea). Are they simply knocking out the gene for PPO? If so, what is the ramification to the apple? The enzyme is there for a reason. Will the quality of the polyphenols -- and their associated health benefits -- be compromised if PPO is removed? Or, have they added a gene that creates a pigment to counter act the brown color? What are the ramifications of that?
Overall, the idea makes me uncomfortable. Nature is very clever, and I am wary of tinkering with her.
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ribs, shoulder, belly
a magical animal
tender, delicious