r/askscience 27d ago

Biology How does sourdough work?

36 Upvotes

Question regarding sourdough...

It is my understanding that wild-type yeast strains are region-specific. So a sourdough starter created in the Bronx would have a different array of critters than a starter created in Phoenix. This difference can (does?) result in a different flavor profile across the sourdough baked goods.

Hypothetically, I take an established Bronx sourdough and move it to Phoenix. I then use it regularly for two years (arbitrarily). Is it now repopulated with Phoenix yeast? Does it stay a Bronx sourdough because there is such a high concentration of Bronx yeast to begin with? Is there a rate associated with the turnover? Does it become a hybrid or something?

I'm very curious how this works. Thanks!

r/askscience 27d ago

Biology Science of sourdough

1 Upvotes

[removed]

1

Tips to remove liters of water post-HPLC?
 in  r/Chempros  Nov 09 '24

Any reason you can’t do a salt extraction? I’ve had to do this a few times in the past. Combine all fractions, saturate with NaCl, extract a few times with an appropriate organic. Max Ive done is 0.5-1L mobile phase though.

Non-aqueous reversed phase? Gradient with Methanol instead of water, no buffer, just condense.

Good luck!

3

Minion or Train?
 in  r/smoking  Sep 29 '24

The weird invention from the beginning of beauty and the beast. Maurice, or Maurice’s machine.

3

Have This Reached Your Area Yet?
 in  r/newyork  Sep 18 '24

WE GET YOU SIR!

12

For my sleep wrestler homies— what’s the worst thing you’ve accidentally done to a partner?
 in  r/AskMen  Jun 25 '24

Check out a full sized pregnancy pillow. My wife called it the demilitarized zone.

9

How to remove naphthalene without sublimation or chromatography
 in  r/Chempros  Jun 07 '24

Naphthalene is decently soluble in MeCN. Maybe try recrystallizing in that.

r/castironcirclejerk May 03 '24

Found this while out on a walk. Salvageable?

Post image
35 Upvotes

6

Found this while out on a walk. Salvageable?
 in  r/castiron  May 03 '24

I didn’t know that existed, much more appropriate sub

r/castiron May 02 '24

Seasoning Found this while out on a walk. Salvageable?

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14 Upvotes

4

What are phrases men hate hearing from women?
 in  r/AskMen  Feb 08 '24

Throw a toothpick in a volcano?

2

The Bubbles, Acadia National Park, Maine [OC] [2268x4032]
 in  r/EarthPorn  May 26 '23

I sat at this exact spot with my wife and one year old daughter. It was right after my daughter realized I wasn’t with them. She turned around, saw me a ways back, and yelled “Daddy”, super loud and in front of a decent crowd of people. Instead of being embarrassed, like I was a part of a scene in public or something, I was just proud. I thought, that’s my little girl.

Thank you for the memory, that’s a great picture.

1

Cleaning flasks/stir bars with Pd residue
 in  r/Chempros  May 13 '23

Everything I do in the lab is some version of metal-based catalysis. To make sure the stir bars aren’t a source of cross-contamination, I soak them in 2:1 conc. HCl to nitric 12-48h, r.t, covered, no stirring. You’ll be fine, just keep any nitric waste separate. Label your nitric waste appropriately so your EHOS doesn’t get huffy.

7

2021 olympics women's weightlifting
 in  r/JoeRogan  Jun 23 '21

It would take two guys to fuck an ostrich, three even.

7

Episode Discussion: 368- All Rings Considered
 in  r/99percentinvisible  Aug 28 '19

Came here to say this... Young woman approaches... “Umm, what are you doing...” Baby Rosenberg -“Your foooooooooone was ringing, like how rude” -drops phone sofa -walks out to thunderous applause Young woman... 🤨

1

Is it possible to maintain human life on a planet that's atmosphere is 20% oxygen and 80% ANY other non-toxic gas?
 in  r/askscience  Aug 22 '17

Can't forget density. A non toxic gas that's heavier than oxygen can still kill you...

1

LPT: Don't diminish the value of what you do by referring to it by "I'm just _______"
 in  r/LifeProTips  Jan 15 '17

The word just is just completely unnecessary. Any statement you make containing the word will sound more professional without it. Except, like, when you mean just, like fair, and stuff. I'm just finishing my tps reports. I'm just deciding if my actions were just. Just the tips.

r/memes Jul 23 '15

Sexy Kat

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3 Upvotes

2

Suggestion
 in  r/CastleClash  Jun 09 '15

I think the problem is that the ranking might only be valid for base stat heroes. Hypothetically, vlad is number 1 for raids, but if your vlad only has a lvl 1 talent or skill, your Thunder God with 5/5 life drain could be your best raiding hero.

Also, ranking heroes is difficult in general due to the fact that no hero is being used individually for anything. Your heroes are always working in a group, and various heroes support and complement eachother. Your team needs... to be a team. Hope this makes sense.

2

What determines what hero is shown first when doing raids and dungeons?
 in  r/CastleClash  Mar 11 '15

I read somewhere that it's arbitrary but consistent when heroes are the same level.