Expired Milk Under the Microscope
ฝัง
- เผยแพร่เมื่อ 7 ก.พ. 2025
- Microscopic footage of milk before it expires, after it expires on its "best-by-date" and after being incubated to speed up microbial growth. I also tested for bacteria at each stage with a petri dish to quantify bacterial colonies.
I believe the most common bacteria after the milk was incubated to be lactobacillus because of the following criteria: gram positive rods, growth on complex medium (milk, Tryptic soy agar), non-pathogenic since the milk was pasteurized, Indole negative, Citrate negative. This is the best guess I can make with the medium and tests available to me in my lab.
Visit the links below for more information on:
Homogenization:
en.wikipedia.o...)
Pasteurization: en.wikipedia.o...
Expiration dates and how to store milk: www.eatbydate....
Curd: en.wikipedia.o...
Whey: en.wikipedia.o...
FAQ:
Q: The milk was pasteurized. Where did the microbes come from?
A: Pasteurization kills most but not all microbes. The ones that survived grow in the milk.
I used a Nikon D3300 DSLR camera and a Leica ATC 2000 Microscope for this video.
The Microscope magnification of each shot is shown in the bottom right hand corner.
Music is written and produced by Sci-inspi.
something about the music makes me wanna be a microbe chilling out and floating to some nice guitar.
Before being boiled alived
69 likes
I didn't want the music to end
The microbes would vibe so hard
The creator of the video makes his own music for every videos, and I think he has a spotify album containing all the music he made.
now try looking at expired microscope under milk
What the .. hahahahahaha
@@Neroz0r 😂😂😂
I had to read this once or twice to regather my thoughts XD
I tried it and it was just white.
LMAOO
I love your style dude. It's simple, no stupid overacting "cool and hip" TH-camr. Very professional, love your protocol. Also great music
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Any other bigger yourtuber would have gone like this when they see small spheres in the milk when its fresh. "WOOOOOOOOOOOOOOOOOOOOOOOOOOOAAAAAAAAAH! I CANT BELIEVE THIS! THIS IS INSANE! LEAVE A LIKE AND SUBSCRIBE AND HIT THAT BELL IF YOU ALSO FIND THIS INSANE! WOOOOOOOAAAAAAAH!"
But it's pretty slow
H I P 💀
Someone liked "4", thank you.
I worked in a milk laboratory, you should get hold of raw milk before its been pasteurised or had any treatment, its like a microscopic rainforest, with uncountable amounts of species.
Leaving raw milk out on the kitchen counter overnight makes something very similar to kefir. We have our own cows and goats for milk.
Do you drink it?
It tastes so good though 😭😭
Sounds good for you.
@@alexandervowles3518 having microbes doesn’t necessarily mean bad
the microbes are just seasoning don’t worry about them
Microbes are smaller than seasoning so you can’t taste a microbe.
Cool Guy man
good job ruining the joke
@@ManMan-ko7ll r/woosh
A microbe wrote this
I knew it was a joke, I was trying to make it more interesting, sorry if I ruined the joke.
found out this music is your original content
subbed without a second thought
Eehhh really???
@@AlisDarc the description said so
hey that is cool, it goes with the video rather well in a "hmmm let's ponder" kinda way too 😀
Guitar jam 🎶🎸
Exactly 🙂💯
Was saddened to not see anything in the description crediting who wrote the music. Subscribed when I discovered that it was you.
Please put this on sound cloud.... I fell asleep to it.. it’s so peaceful..
He did? wow not bad
Really?? That’s great! I like this music a lot. A lot considering I normally hate it when yt’ers add music to their vids. Subscribing. Not even sure what this channel is all about.
I turn down the sound. It keeps it real.
Lou Fazio whatever floats your boat
So as someone that's lactose intolerant, I wonder how much of a difference lactose free milk would look like under a microscope since it has a "lactose enzyme" in it that makes the milk last MUCH longer than ordinary milk
I'm not lactose-intolerant, but I have contamination-OCD, lol.
@@bagelbagelwah5047 bro what
@@sigmamale4147 I buy lactose-free milk solely because I irrationally worry about milk expiring or being even remotely close to the expiration date.
@@bagelbagelwah5047 Lactose-free milk lasts SOOOOO much longer; it’s the only plus to lactose intolerance. You waste way less milk overall.
@@khayotikk that is because it has been dosed with chemicals to preserve it......nature never intended for this to happen,,,wonder what that is doing to your gut bacteria...i would think that it wouldn't be good
here i am 2 am watching milk fungus under a microscope
Exquisitely Russian same bro lol
Same omg!
Same here rn, bud
Same
Same its 1:58am ET
Try doing a 5 second rule under the microscope!
Kenny z it that rule real tho?
mimi22629 Hopefully we get to find out
I hope you're joking
@@mimi22629 idk but I heard someone said that the 5 second rule its not true and once it touched something dirty or whatever objects, it'll already had many bacteria
But I guess the 5 second rule actually like means of its already 5 second, then its already like, full of MANY bacteria
Sorry if I explain it badly, I'm not a genius, and I'm nad at english grammar
@@takoihina4731 everything has bacteria.
Came for the milk, stayed for the ambient guitar soundtrack.
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I need a microscope. Whenever my wife and I wonder if milk in the fridge is still good I’d say “wait, let me check it under the microscope.”
Then buy one simple
I mean I just do the good old sniff test and if it passes but it’s somehow not good I just reap the consequences
@@forgmanguy it’s definitely a method that works but the results take some time to come in, and when they do, it’s too late lol
"Oh no, don’t worry, that milk hasn’t gone bad yet. You want a bite?"
Hahaha
Isn't milk blood and pus
Looool
Tap to chat publicly no, because boobs aren’t pimples.
@@cognac8297 and hormones too
Grandparents out there: “It’s still fine to drink! The best before date doesn’t mean anything!”
Ok
Well if they say so *Chugs entire gallon of expired milk and dies*
lmao
your parents were mostlikely talking about real milk. not this processed ass, heat treated, whey juice. This milk doesn't taste or go down the same 💯 that store milk is disgusting
@@sirblitzherback9453 bro what 😐
the music makes me think of a very depressing episode of spongebob.
No such thing
Gary come home 😭
I messed up and know your gone
Music is great IMO
Nice weed smoking music to chill out.
RIP Stephen hilenburg
Hey. This is the first video I watched off your channel and back then I instantly loved the music here and was blown away to learn that you made it. It's relaxing and up until today I still listen to it to sleep every night. As a beginner at guitar I aspire to learn and play this. So, I just wanted to say from the bottom of my heart, thank you.
Thank you for such a heartfelt comment. You can do it, just keep practicing.
The guy who composed the track is da real MVP
It's him :)
Wtf's MVP?🤔
@@souvenirs9856 mvp means most valuable player, but colloquially it tends to just be a high form of praise.
@@cedrove7513 Most Valuable Praise 😆
@@churlesjenkins4338 suppose that works lol
Me: * Pouring expired milk down the sink *
Mom: Stop! The milk is fine.
The milk:
"Just cut off the bad parts"
@@_sleepy_head11 lol... Is that you Grandma?
@@notimportant3914 Nope. Its actually a quote from a random Karen.
@@_sleepy_head11 plot twist: the Karen is a grandma
How do you have milk around for so long that it goes past the expiration date? A gallon of milk usually only lasts a day or two in my house.
Goddamn, this man let an entire milk jug go bad for us. Respect.
man .. a jug of milk wont last a day or 2 for me
Could have use a cup or something lol
I hate milk
F
Dude it's like $2.50 worth of milk
I've literaly put this video on loop in the background for hours, just for the music. It's so soothing and calming.
The creator of this video made the music I think, I think they have a Spotify!
It's weirdly beautiful how something as simple as expired milk can lead to life
Life is everywhere around us, the whole planet is positively filthy with all sorts of microbes. Milk just so happens to provide a very suitable environment for them to reproduce in because it's so rich in nutrients. We pasteurize it to minimize the amount of microbes in it and refrigerate it so that any microbes that survived pasteurization or got in afterwards can't reproduce as fast, delaying spoilage. In other words, spoiled milk didn't really "lead" to life - life was already there, it just needed the opportunity to thrive.
milk is not "simple". it's a nourishment for new-born life for many species
@@lanainmydreams ok liberal
@@lanainmydreams breaking down the components of milk and its uses isn't simple but they meant how commonly used milk is and how the spoilage of milk isn't an uncommon occurrence
@@SunGodNika__ imagine bringing politics into a discussion about expired milk lmfao, embarrassing
i love how calming yet educational your videos are. the fact that this is your own music is incredible. you earned my sub
the song is from This War of Mine
@@Lycanthrope9444 it’s not the same but it seems he definitely sampled it
What's the song called?
the music is so nice I almost fell asleep watching the video lol
It just shows how much effort you put in these videos, respect!
@Aden hui he did much more than that. If you knew how much effort it actually takes to clean expired milk from a microscope stand maybe you'd know that it takes a lot of effort. Not only that, but immersion oil used for 1000× lenses is expensive.
Katharina K. Preach
Aden hui try making the exact same video then
Aden hui he even made the music behind the video. Waited for more than a week to conduct trials. Researched the curdling process and the microbes involved. Put the research in the description. He took several slides of 30 mL liquid to check for microbes. Better than most TH-camr's effort.
Pursuits of Life. Better than Logan Paul filming a dead body
excellent audio choice. fit the mood and pacing just right.
Thank you for doing this. The smell must’ve been absolutely horrid 🤮
so miss muffet was eating and drinking sour milk???
I don’t think it did, it only sat in the incubator for one day, and the incubator was set just a bit higher than the temperature used to make fresh cheese. So basically he just made fresh cheese overnight.
Imagine losing your sense of smell from covid and pouring you a bowl of milk that’s over 6 weeks old
@@Druggy-Doggo yikes
@@iSchmidty13 it still would’ve smelled horrible
If it was raw milk and not pasteurized you would Have a completely different outcome. Do a experiment on that
bump!
Yeah, also store milk is so diluted it barely counts as milk, if it isn't some milk substitute formula.
@@Ebani Ah yes, and how could we forget about the milkman conspiracy?
@@FrostyAUT What is this conspiracy you talk about? I'm just talking about store milk, it is extremely diluted, and many "milk" today isn't really milk but a substitute formula, there have already been quite a few lawsuits in order to stop formula from being labeled as milk or having the word milk anywhere in it's product package.
My unhomogenized lasts longer than regular milk even though they say it doesn't. You just gotta use it once you open it or it loses freshness lol. Has a lot to do with the container too
Love your videos, but it's the music that I'm coming back for. Absolutely lovely.
Same, totally mindblown when i discovered its his music, dude got two talents
Yeah, would be very much interested in a video about music. What guitar he uses, what's the thinking process behind compositions and all that. Haven't got time now to sit down with guitar myself, but also am very interested in combining science subjects with instrumental guitar.
I use a custom Carvin DC135 through a Carvin legacy amp. I watch my finished video over and over and play whatever music I get from it.
I am thinking of making a ''behind the scenes video" where I show how record things through a microscope, how I make time-lapse videos, how I record and edit videos, etc.
@@sci-inspi under what genre does your music fall under? Post Rock? And will you be uploading it? It sounds really nice
@@m.v.a.l7669 I guess rock? I will be uploading more soon.
This was pretty relaxing to watch honestly. Thanks for the cool content. I dig it
I remember AP Bio in high school. Teacher showed us milk under the microscope and, egads!, “look at all that bacteria from fresh milk!” Everyone was mortified until he explained what all those “ bacterial colonies” were. He then went on to use that as a lesson for “why you need to know what you are looking at in order to understand what you are looking at.”
@DONT ok i won’t :)
Didn’t know I would be sad that a video about expired milk would end so soon
Saint deadass
I know Its not your main content but dude, i love your music so much
@Goku what?
Goku you HIV positive
@Goku when he opened the fridge there were clear man hands
Goku
Hey pal, **slurps soda** did you just blow in from stupid town?
what happened? goku deleted the comment
I'm a microbiology technician at a large testing company, but I have experience in dairy processing and this took me back to my first job right out of college. I vividly remember checking samples of milk under the microscope like this. If I'm not mistaken that's probably a Lactobacillus species, but I'd need to test it to be sure since it could also be a coliform bacterium.
I suspect lactobacillus as well. I conducted some test I had available and posted my results in the description.
@@sci-inspi what’s the song 🥲😂
Honestly stayed for the music. You know how to set a vibe 👌🏾
Why are you showing that racist symbol? Ugh.
@@Admiral_Jezza How is that racist?
@@Admiral_Jezza i hope your joking
Wait wouldnt it be racist if I was white tho? Or like any non-black race? Like is this a mind game 😫😫😫
@@Admiral_Jezza WOOOOOWWW HOW RUDE🖕🏾
My Grandpa literally leaves a cup of milk on the counter top for a week until it's all clumpy and then he's like "ah yes now it's good"
Robert PL9501 - Um... Does he drink that week-old glass of milk?
@@Arp477 yup. Sadly lol
Wtf how is he still alive
Robert PL9501 bruh I-
Scooter Why is your pfp exactly your comment
What if i drank milk on 19th of Feb at 11:59pm, will it expire on my stomach at Feb 20th?
zoe jordan stupidest shit I've ever read lol
zoe jordan idk but nice question
zoe jordan i did drink expired milk a lot of times and I’m alive
lol
Omg i acc dont know XD
This music and the slow, calm pacing style of educational video this is brings out some deep buried nostalgia I have for the old days of TH-cam and my teenage years between 2014 to 2016. Thank you for this.
The music reminded me of those childhood rainy days of the late 2000's on Animal Crossing on the DS.
Good nostalgic vibes right there man, chill times when things seemed relatively alright looking out from our own little childhood worlds.
You, sir, have passed tbe vibe check
Nice
And i am in love with it🥺
This is the type of video to get recommended to people 10 years after its posted for no reason.
Yakult inside microscope. Also compare not refrigerated yakult and refrigerated one!
Mmmm Yakult.... Bottle O'vomit.
@@jim191185 I like Yakult. >:'(
Except if we're not talking about the same one because I went to 2 countries with 2 different tastes x)
Just search lactobacilli
Frozen yakult is the way to go
Yes I'm Filipino and I used to drink that a lot as a kid
Idk how I end up finding these videos but it’s always before bed and I find it comforting
I absolutely love your work. Well done. Do not change. The music just makes it so good.
I love the fact that the expiration date only causes curbs to form with little ammount of bacteria, im loving these videos, you definitely gained a sub ;)
That’s the things in cheese so yes the milk is turning to cheese
@@donnahash7572 I don't think so. Cheese isn't obtained by expiring milk, lol
@@zanotellitb5457ever heard of cottage cheese? And how do you think think kefir is made?
@@CLXCL expiration is different from fermentation. That's why even "expired milk cheese" have an own due date.
@@zanotellitb5457 are you one of those people who throw away bread, milk and sodas passed "expiration date"?
I really appreciate your videos
You put so much work into them. I love your music and your footage is great, it’s educational and gets to the point.
Thank you!
How is nobody talking about that relaxing and amazing guitar in the background??
I was eating milky cereal while watching this. I muscled through but when deadly pathogens were mentioned I looked down into my bowl with doubt
Nobody:
TH-cam algorithms: wanna see what expired milk looks like under a microscope?
True tho
That's a whole fact 😂😭
Me: ... yep
Shelsea Tany Guillaume this joke is so unfunny and unoriginal
@@sethmoneygetter you are so unfunny and so unoriginal
That milk expired on my birthday
*and so did I (:*
Lillian H.H rip ✨
Haahaaaha...ha....haah
Wait thats dark
I’m not laughing
RIP 😭😭😭☝️☝️☝️👍👍😘😘
Smooth
What a lovely relaxing experience. Loved this
Its be interesting to see you do one with JUICE. We had a container in the fridge, and for months we didnt know there was the tiniest bit left (it was one of those frozen juice things you mix with water, well the mold and bacteria got so bad it was pushing the lid off. We didnt want to release any spores by opening it. Would love to know what would have happened though.
excuse me what
Yeah what Phantom said.
niqqa what
Why didn't you throw it out when you thought there was none left?!?
Depends on which microbes get into the juice. If yeast gets established quickly enough you will get a low quality wine. If said low quality wine were to sit out for long enough you are likely to get acetic acid producing microbes which would create vinegar.
your videos remind me of those Nostalgic TH-cam times back in 2010 and i love it!, the simplicity relaxing and calmimg educative style it represents stands out very well. i hope you do more videos in the future with this kind of vibe!. love it.
He uses his own music too 😊
I have a jug of milk from 1972, want to test it?
Whoever Whoever imagine the smell
Gimme a sip, Im thirsty
Damn, I thought my friends jar of Welch's Jelly from 1993 was the oldest food stuffs lol, damn man. That sounds narsty
Why do you have a jug of milk from 1972?
Y though?
Yeah I'll be frequenting this channel this is incredibly fascinating.
Your music is so calming..
What would be amazing is to see the bacteria develop in a time lapse from fresh milk to spoiled milk.
th-cam.com/video/eD5z5Zkcc0s/w-d-xo.html
I LOVE what you're doing. Inspiring people to take a closer look at their world. The music is so relaxing. You play so well. Such a great channel! Keep up the awesome work, hope to get down there to see you soon. We were just on the phone with Trade trying to work out a fun internship at the AQ! Also I miss u guys for river season...they got me working hard at summer camp, lol. But soon, I should be able to help out, if only in the lab. Love yall
Hi Tiki, Good to hear from you. We miss you too. You know my lab door is always open to you. Come by and visit whenever you like. Talk to you soon!
The music is the best thing in the video. It's so calm and nice to watch and hear.
Bruh the music made me sleep. Imma follow so i can watch before i sleep.
2:12 looks like the pattern on every single table and desk of every school I’ve ever been to
Darw¡n 42 really? Mine is just wood
We had such tiles in our bathroom
69 likes boi
Amazing you make your own music, love this channel. makes me want to pickup my guitar and write a song
That's always a good time.
I love how chill the vibe of this video is while looking at microbes in expired milk and being warned of possible pathogens
Informative, interesting, and soothing! As a kid I had a low power microscope that I loved to spend hours looking through. I'm definitely subbing!
"Normally, milk is refrigerated to slow down bacterial growth. But I want to speed it up. I did this by placing the milk in a 37 degree Celsius (98.6 Fahrenheit) incubator for 24 hours"
Ah yes, the warmdge.
thanks for the laugh lol!
The hodge?
@DONT ok
did this randomly pop up in anyone else’s feed in late to middle march well in quarantine?
And what would be the coincidence? I don't understand the connection
Yes. Yes this did.
So did a lot of other videos, so what?
The microbes maybe? Bacterial growth... The algorithm listens to your hearts desires..
Yes haha
Immediately subscribed when I read that it was you as well who made the music
grandpa: DON'T DRINK THAT!
me: I'M JUST TAKING PHOTOS!
What are my humans doing these days
Bad!!! dunno if we will survive this century
You know the usual, just humaning ;)
Wtf is earth doing in TH-cam
Getting free corona from china
yea thank you
Putting your gifts to good use.
Me: its 4am, work at 9am
TH-cam: videos of expired milk and microbes
Me: yeah. Okay
And you are zombie in all day
Hablas inglis spanlo
The music is so good man
Ughh I just imagine the smell opening it
Good vid btw
Everyone: Don’t drink after Best by
My mom: It’s ok honey bc it’s in the fridge
Moondust Pie yes. You are the one.
I love this channel. relaxing AND microbiology, it's great :+)
Same !!
I love these videos, they are so calming, especially the music… I watch these to wind down in the evenings. Please keep making them. Thanks 🤍
The background music is so soothing... I literally felt like sleeping
Oh man, you should upload your musics to Apple Music, Soundcloud and Spotify.
Apparently he did. Check the end of the video
The music makes me think of expired food I've thrown away.
Hey Sci- Inspi along with your video, your music is great too... It so calming :)
Mother: Can you pick up some milk from the store?
Me: UsE wAtEr
Funny thing is, unless you're buying bottled water, tap water has more microbes in it than actualy store bought milk lol
Filters help
How have I gone from watching makeup videos to watching gone off milk at 21:30 on a Sunday night. I couldn't stop watching though!
Oml the TH-cam's algorithm is awesome!
No and I'm not being sarcastic.
Welcome to no thot's land
@@gocommitbreathe21oxygen11 I cringed so hard at you
Jessica get a life
"You might as well learn something important for once." - TH-cam algorithm.
Bruh, I See those thingy tiny small dudes when I look up in the sky 🌌
Those are called floaters. They're harmless, non-living, and annoying.
I have quite a few and I'm under 30! My eye doctor said it normally happens at an old age, but some people are early boomers. 🙄
I also see and hear static, though. Static everywhere. It's worse at night.
@@m_i_g_5108 Uh what? The fuck
@@m_i_g_5108 how do you SEE static?
@@narcisoff How do you HEAR static? Lol
They're all good questions.
You'll have to do medical reading on your own to get a good, yet still incomplete, answer.
I'll summarize it since you still asked:
No one knows, otherwise there'd be medicine for it. There isn't any.
All I know is benadryl makes it worse. 😂
Static is static. It's small and everywhere in my field of view. It's always moving, too. Nothing ever seems perfectly still.
I don't even know how I ended up like this.
I have other stuff going on that might play a role, too.
It isn't like TV static where it's big. Instead it's like adding a filter over everything. The static "particles" are tiny, but they add up since I see them everywhere.
Look up HPPD. It's not just static.
@@m_i_g_5108 Its a neurological anomaly. Has to do with a electromagnetic disorient that the brain can't translate to the eyes. So it's just this stuff. You know. Random stuff that you see but isn't actually there.
i keep coming back to this video for the music and how relaxing the video is
l love the music...thank you it changed my mood.
When you do cool scientific stuff and want to share it but people only praise your music.
Sci Inspi: *Am I Joke to you?*
It would be great to drink it before it gets more expired.
Never thought a milk analysis video would make me tear up
I never knew if watching microbes could be this satisfying :)
90% talking about the music
8% experiment
2% other
I subscribed knowing it was you who created this wonderful master piece both music and experiment. ♥️
Better than overused, uncreative memes which seem to be every comment everywhere nowadays.
Spaceman Spliff no one:
me: *_Y E S_*
Potato:POTATO!!!!!!!
Oh w0t?
somehow this is more interesting than the bullshit life around me
Well said homie
oh Goose 100 from 4 months ago, you got a big storm coming
❤️❤️
Straight to the point, simple and clear, amazing job
I find it cool that we can just watch super small living organisms in action
This is like a visual novel, specially with the music and style of captions 😆
This is oddly calming and informative.
This is sooo relaxing to watch for some reason, the music also adds to it of course.
Me:Its late i gotta sleep
TH-cam: Hey look. A random guy watching expired milk under some micr-
Me:
4:36 this image is very disturbing for me. I don't know why
same
I didnt even see that before but now I'm disgusted
A lil bit of trypophobia maybe (:
@@AnonymousEasternPotato Yes I have trypophobia aka small hole phobia. These kind of images are very uncomfortable and disgusting for me.
You may have Trypophobia
the music made everything 300% better
Very nice informative video all without distracting bgm. This music is perfect. Thanks for the info
3:51 there’s a bacilloform spinning out of control to the top right of the spot
wow! you made the music? Its amazing!! Really relaxing!
Me: Shows my mum expired milk
Mum: it taste fine i used the milk in my tea
nose exhale lol
Your mom is way more disgusting than my piss
5 years later, TEST IT NOW. Also, it eludes me how the microbes are non existent and then POOF they are just THERE after some time. I mean, the lid was on soooo where were they hiding?