Today I Learned
What did you learn today? Share it with us!
We learn something new every day. This is a community dedicated to informing each other and helping to spread knowledge.
The rules for posting and commenting, besides the rules defined here for lemmy.world, are as follows:
Rules (interactive)
Rule 1- All posts must begin with TIL. Linking to a source of info is optional, but highly recommended as it helps to spark discussion.
** Posts must be about an actual fact that you have learned, but it doesn't matter if you learned it today. See Rule 6 for all exceptions.**
Rule 2- Your post subject cannot be illegal or NSFW material.
Your post subject cannot be illegal or NSFW material. You will be warned first, banned second.
Rule 3- Do not seek mental, medical and professional help here.
Do not seek mental, medical and professional help here. Breaking this rule will not get you or your post removed, but it will put you at risk, and possibly in danger.
Rule 4- No self promotion or upvote-farming of any kind.
That's it.
Rule 5- No baiting or sealioning or promoting an agenda.
Posts and comments which, instead of being of an innocuous nature, are specifically intended (based on reports and in the opinion of our crack moderation team) to bait users into ideological wars on charged political topics will be removed and the authors warned - or banned - depending on severity.
Rule 6- Regarding non-TIL posts.
Provided it is about the community itself, you may post non-TIL posts using the [META] tag on your post title.
Rule 7- You can't harass or disturb other members.
If you vocally harass or discriminate against any individual member, you will be removed.
Likewise, if you are a member, sympathiser or a resemblant of a movement that is known to largely hate, mock, discriminate against, and/or want to take lives of a group of people, and you were provably vocal about your hate, then you will be banned on sight.
For further explanation, clarification and feedback about this rule, you may follow this link.
Rule 8- All comments should try to stay relevant to their parent content.
Rule 9- Reposts from other platforms are not allowed.
Let everyone have their own content.
Rule 10- Majority of bots aren't allowed to participate here.
Unless included in our Whitelist for Bots, your bot will not be allowed to participate in this community. To have your bot whitelisted, please contact the moderators for a short review.
Partnered Communities
You can view our partnered communities list by following this link. To partner with our community and be included, you are free to message the moderators or comment on a pinned post.
Community Moderation
For inquiry on becoming a moderator of this community, you may comment on the pinned post of the time, or simply shoot a message to the current moderators.
view the rest of the comments
Fat itself is a preservative, regardless of being saturated, cis or trans, since it helps to isolate food from humidity and air. That's how comfit works, for example.
Yes, but it's a bit more complicated than that.
Trans fats are mostly the result of partial hydrogenation of unsaturated acids; basically you pump some hydrogen into fat, in the presence of catalysts, and it'll convert some triple bonds into double and some double bonds into single. That makes the fat firmer, because it increases its melting point, so yes, it changes the texture.
However, if the result is a double bond, you can generate two types of molecules, "cis" or "trans", depending on the positions of the carbons around the double bond. Like this (check the last two molecules):
Most natural processes generate cis fatty acids. Hydrogenation generates trans fatty acids.
This wouldn't be a problem if the fat was hydrogenated all the way, because then the double bond gets replaced with a single bond (where this issue doesn't pop up - see the first molecule). However that is more expensive than simply doing it halfway, and generating all those trans acids.
^Best answer. I majored very well in chemistry, a tiny bit less well in career, but this is the "cis" vs. "trans" explanation I was hoping to see.