Food Tests - Iodine, Biuret, Benedict's, Ethanol, DCPIP

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A summary of the tests of biological molecules. The following tests are included:
Iodine test for starch
Biuret test for protein
Benedict's test for reducing sugars
Ethanol emulsion test for fats
DCPIP test for vitamin C

[@hridaylilani2618]

Iodine - Starch test - += blue/black from orange
Biuret - Protein test - += purple from blue
Benedict - Reducing sugar - +=orange from blue
Éthanol émulsion - Fats - += cloudy white from colourless
DCPIP - Vitamins- +=colourless from blue

[@mahadkhurram2950]

For the Benedict test, you forgot the other colours (green, yellow, orange, red or brick red), like he mentioned in the video

[@dedpaan]

nice

[@nyroxl4229]

WHAT A SCIENCE VIDEO OUR TEACHER MAKES US WATCH THATS ACTUALLY INTERESTING AND EASY TO UNDERSTAND WHATTT?!?!?

[@devskiz]

@EpicTurtle 64 stfu it really is

[@almostmybedtime]

shocking

[@staceejane]

An assignment y'all actually do! WHAT!?!?

[@frzdytheconsumer8094]

fax

[@achilleus606]

@@devskiz yh

[@dinosaurcola]

anyone from quarantine whose teachers told em to watch this here?

[@mrsmagallan4486]

me

[@sama_lami]

me :(

[@joethebrand8083]

Me

[@abidabschonaire1609]

me :-(

[@pck8276]

Me:(

[@chkngtjalboy]

my biology teacher assigned this video for us to watch, and it's surprisingly helpful. great video!

[@whimsyspopit]

Honestly, the video was surprisingly well-constructed and beautifully produced. It was clear and concise and got the point across smoothly. Overall a pretty great choice by our online teachers lol

[@themightygames5187]

Yea

[@BBQsquirrel]

Why surprising 😏

[@_Dreamer_9306]

I still remember in 2020 during online school when our teacher made us watch this video during class. Makes me nostlagic. Until today it's useful for me and I'm using it for quick revision in 12th grade for my combined science exam, it's excellent for jogging memory. Thank you for this straightforward video!

[@pranitsingh7228]

My teacher gave this to me 5 hours before my test , you really helped

[@themightygames5187]

It does very much

[@mikhaild9220]

Teacher decided to show us this day before exams...thanks for the help

[@Science_Sauce]

+Mikhail Diljohn you're welcome. Hope you did well in the exams

[@mikhaild9220]

Science Sauce Thanks man and the exam went well :D

[@phoenix-nc9vn]

Mikhail Diljohn you got a D? Jk

[@vivijayafatta8378]

Me neither

[@PianoCubeYT]

Biology Assessment tomorrow, this really helped, thank you so much. The assessment's on the whole of Topic 1 (enzymes, food tests, osmosis, etc.) All your videos are really helpful.

[@tibafiras1661]

I've seen more than 10 videos to understand the differences between benedict's, iodine, and biuret test but none of the videos was straight forward as this video. This is the best one. Thank you so much for this explanation.

[@justmematt5908]

Good luck 2019 biology students!

[@imzodiaced5428]

2020

[@trapilix356]

@@imzodiaced5428 same

[@fiyazrahuman372]

2020

[@ag6125]

Fiyaz Rahuman we got this

[@justmematt5908]

I went on to get a 9 and study biology A level. You guys can do it!

[@riquelcarey]

Why is everyone's teacher giving this to them right before exams🤔

[@sumitExplains]

because my exam is tomorrow

[@AL_1314]

I got a feeling that my bio teacher will give us a test tomorrow😂

[@ravenclaw2555]

riquel carey I KNOW RIGHTYTT

[@ravenclaw2555]

OhMiC SAMEEEEE

[@Qploi]

Same dude but a bit earlier

[@Nikki_Raven]

Thank you much. I'm having a biology test tomorrow and teacher decide to include this on the test. This was really helpful :)

[@Science_Sauce]

Good luck with your test. Remember that with questions on this topic, if it asks you "How to safely test for the presence of ...", you get a mark for safety. For example, "Wear safety goggles".

[@Nikki_Raven]

Science Sauce Thank you so much and for the tip which I will make sure to note :)

[@ijustwannacommentnotmyreal9814]

Science Sauce Gosh thanks for that tip. I have a biology practical exam tomorrow and I don't even know what they might give. Thanks, I'll go check out your other videos now

[@skpsam5000]

Same.

[@vivaanchandak4939]

Science Sauce to kind bro

[@krishtiwari9008]

Anybody watching the video now?? But honestly this was very helpful i wrote the IGCSE exam last year and managed to get an A star thanks to you sir.. Amazing teacher

[@maxkenmir-sherry9677]

Really really useful!!!! I needed this the day before my exam, thanks. Keep up the great content.

[@Science_Sauce]

Thanks. I hope you did well in your exam.

[@nazaniyas9277]

mee toooo

[@Chokuten]

@@nazaniyas9277 same

[@elieesber3067]

Thank you so much! I have been watching tons of videos on youtube yet none were like yours! You were extremely clear about the observations and it was a very easy video to understand. Thank you Mr.Science Sauce!!!!

[@A045Baller]

This was very useful, I have my a level unit 3 internal assessment in few hours and this definitely saved me.
Ahmed Mohammed

[@NellyThole-xs1nw]

Where have you been all this time thank you so much I really appreciate 🥰🥰

[@itry_mash8261]

If i was dipped in ethanol it would turn into a real cloud

[@alterego8632]

I'm dead!!!!LMAO

[@anirudhsreeram4015]

@@alterego8632 Perhaps you were dipped in methanol

[@madhavj7426]

LOL!!

[@dinosaurcola]

Alter Ego, thankfully I am not

[@hellyazad7041]

😂😂😂😂😂LOL

[@nazihaibrahim6537]

CONCISE,BRIEF AND EFFECTIVE.CHEERS

[@nobodyisnotsomebody]

To any GCSE students good luck. And anyone whose taking any form of a science test and watched this!
But thanks for the great video, it was easy to follow and understand, really helped with my studies! :)

[@odeer170]

I’m watching this 5 minutes before my bio exam. Fingers crossed 🥲

[@harryscorah2091]

An actual clear explanation, thanks.

[@jaemiontheblock]

biology practical exam tomorrow, so this really helped me to know what exactly am i supposed to do. thanks op!

[@bonnybonte3484]

Thanks for making us to understand

[@coolnurselady]

☆☆☆☆☆ 5 STARS , NICE vid, straight to the point of the tests, easy to understand THANK YOU! Please make more for BIO Labs !

[@hamzaadam2874]

exactly what i thought 👍👌😊

[@charlotteparker2051]

Dudes voice is so soothing this video is yes

[@dr.muhammadumer5932]

I have a Biology test tomorrow.Taking help from this video.😇

[@Science_Sauce]

Good luck for your test.

[@kittycattygo2902]

Thanks this really helped! Tomorrow I have lab session :)

[@lyssha1697]

Ahhh thank you sooooo much my IS teacher gave me and my classmates this vid to watch a dat before our😀 exams and it helped soooo much thank you sooo much

[@kaylabowley6237]

For reducing sugars you can also use Sudan 3 which separates the oil from the water, leaving the oil on top in a red colour.

[@fionawatson7691]

Sudan III is a lipid test not a reducing sugar test. Otherwise you are correct but emulsion test is a better one.

[@zeroc0ntantchannel66]

This video actually helped me with my science homework

[@madhavj7426]

Great explanation !!!!It was really really helpful!! I needed this the day before my exam .....THANKS FOR THE HELP @Science Sauce

[@Science_Sauce]

You’re most welcome

[@matinkhomkandawire5514]

Thank you so much for this

[@thembalihlemalinga6319]

given the Question," Describe how each of the food samples identified in this experimental video is metabolised" how should one answer that question?

[@yarshah135]

This video helped me with my Science home work. Thank You Science Sauce. I subscribed

[@Science_Sauce]

+pika147chu happy to help! Hope you get a good mark

[@mohammednabilahmed]

Thanks for making this Video. I really thanks the video maker from the bottom of my heart. For his video, I will be Passing my Science Exam. Once again Thank you very much. Keep making videos and keep helping us.
I just Loved the video.

[@Science_Sauce]

Thanks for the comment. Good luck with your science exam.

[@mohammednabilahmed]

Thanks

[@MukabarisaFrancine]

Thanks this video helped me in biology revision

[@studyonly8213]

thank you it helped a lot 😀👍

[@Roasted_You]

Bro I am only litterly the person watching in 2023 Science sauce you are really awesome I hope I will do well in tomorrows test 🥰

[@ModricoTV]

Here for Ms. Quitiquit’s Biology class (also known as Elizabeth Jo Biology on TH-cam)

[@AntlerDon]

same

[@elvanwyk6573]

Great video. You explain very well. Continue!

[@soffxx5363]

Learning all the practicals the day of my exam lmao! (teachers never taught me them and i only just realised how important they are *facepalm*) thanks for this!

[@Science_Sauce]

Good luck for your exam

[@soffxx5363]

Science Sauce thanks! It went okay

[@ambetsedairus6754]

l think it is good things to teach biology online l like it

[@RSSRSS5]

what would you say is a helpful way to remember the colour changes as my exam is next week - good video by the way !

[@ahmedhayat9532]

I HAVE A BIO EXAM TOMOROW I HOPE I GET GOOD MARKS

[@user-xf7hi3nn1h]

AM having a biology practical tomorrow hope this will help me please thank you.

[@callum4135]

9th grade biology where y'all at

[@rileytaylor6856]

thanks guys really helped out

[@alejandrochinfatt1607]

best tutorial and yea my teacher sent me here before my test

[@sprout8426]

aw man this helped alot! thank you so much!!

[@joy_happy]

Well my teacher knew which video to choose ,best teacher to best opinion ❤

[@nithish.r8116]

Thanks i have written the exam Good💖💖

[@5minuteexplorer705]

Helped a lot
Thank you !

[@linganibalise2833]

Thanks

[@nafeesarubaiya7549]

thank you so much this video helped me a lot...

[@satishnikam6221]

You can even take a food item, wrap it in paper and just rub the paper. The paper would turn greasy and a bit translucent if the food item has fats. This test is far more easier than the one you did.

[@muhammadfarhan3341]

Thats true, but IGCSE demands you to use the emulsion test to test for fats 🤷‍♂️

[@tobilobadavid3585]

nice video i love it. its so explanatury and easy to understand

[@markarca6360]

There is also the Fehling's test, also used to test for glucose.
Fact: Both the Benedict's test and the Fehling's test was used to detect the amount of glucose in the urine of diabetics. Actually, they use a colorimetric chart to tell the amount of glucose in the urine.

[@bluedude6991]

Thank you very vey very much.
Helped a lot.

[@ahmedhayat9532]

YEP IT IS SOOO USEFULL

[@kimb8583]

Great explanation!!! Thank you!

[@Science_Sauce]

+Kim B you're welcome 👍

[@kyconxrl4536]

4 years ago you was in year 9 + and now you are a adult

[@FardowsaHassan-hz4nv]

Thank you

[@anushaperera2081]

Who came here because of the DCPIP test?

[@boopbeepbeepboop7]

a white emulsion also formed in the oil test tube when you used the buiret solution.

[@PixelPioneerV]

Uhh that’s for eyehole bro

[@aaronmbewe1787]

so good. I love this.

[@ellisthomas8981]

Waw, what a great video. Thanks this helped so much.

[@deesar9920]

This is very helpful for my practical exam xD

[@vouge3807]

thx for the video
bioloy atp tommorow...

[@Science_Sauce]

Good luck

[@vouge3807]

@@Science_Sauce Thanks.

[@Kurosaka]

same

[@tinolay1398]

Thank You so much

[@liditube8861]

good luck 2021 biology students

[@bigdaddydanz7967]

why do we need to include water in this experiment?

[@Science_Sauce]

It’s used as a control, to confirm that any observable changes are the result of a biological molecule.

[@bigdaddydanz7967]

Thanks :D

[@itsstillwill7419]

Thanks really helped out with my homework

[@Science_Sauce]

+Its Still Will Happy to help!

[@docteramma8879]

Love ur every single video... But depress to find not enough content available😞

[@dylgmd8407]

Awesome Sauce!

[@thomasrebair7207]

Isn’t it awesome sauce!

[@saayatakahashi1681]

Very Easy to understand!

[@jairossmatimba6394]

this is truly helpful

[@BekaboyBekaboy-rg2tk]

What the solution of non reducing sugar

[@shreypatel6535]

you know for the change in colours for each test is there a way of remembering each change and what it indicates? because there are a lot of changes in colour and I can't remember what each change in colour indicates

[@Science_Sauce]

+Shrey Patel not really, I'm afraid it's just something that takes time. I recommend summarising it all in a table.

[@shreypatel6535]

thanks very much mate, your a legend👊🏽

[@jormoradjei6195]

I am watching this 4AM, like 8 hours before my test

[@fatematejani790]

THANK YOU SO MUCHHHH (yes, I am losing my mind, but seriously, thank you.)

[@dr.bhalchandragajare5731]

made easy to understand.
great educational video.

[@Science_Sauce]

+Dr. Bhalchandra Gajare thanks for the feedback!

[@user-xg4tm6zf1v]

so the volume of DCPIP solution must be fixed??

[@yenshirou]

Haahhaa this is rlly good thanks dud I wouldn't have got this if not for this vid

[@heebyjeeby4419]

why do u have to pour the biuret solution on top of the protein suspension, basically y does it have to form a layer on top before mixing?

[@Science_Sauce]

It doesn’t. In the experiment in the video I used egg white which is very thick so the solutions didn’t mix until shaken or stirred. It’s not necessary for that to happen when testing for proteins, however.

[@santoshray7958]

Plz upload a video how we could check out the life of a food products

[@qhtey1970]

I'm here because there's O Level practical exam tomorrow :):

[@SydneyDover-12104]

What is the controlled substance

[@halarefaie8675]

THANK YOU SO MUCH

[@sunsukchristiansen7627]

looking for DCPIP for Vitamin C test. what is this and where can i get it?

[@samimahufe3327]

this helped preparing 4 my exam tommorow

[@Science_Sauce]

Good luck

[@francescaleo2479]

PROFESSOR HOW DO WE TEST IF A FRUIT OR VEGETABLE HAVE IODINE AND HOW DO WE KNOW IF THERE SOIL HAVE IODINE WHAT COLOUR WILL BE THE SOIL IN SEARCH OF IODINE IN FRUTS AND PLANTS KINDLY I ASK I NEED YOUR HELP 🙇

[@bellayip1820]

What should i do in the examination if i need to test for starch with iodine solution in some food sample which is not juicy? add water into it?moreover, do i need to remove the powered food example after peel off the skin of fruit?what is the use of it?
thank you
p.s. i love your video

[@Science_Sauce]

+Bella Yip Add water and mash it up, then do the test like normal. As for peels, yes, they need to be removed if doing food tests as you want to test the edible part of the food. Hope this helps.

[@emilycesaire1685]

LIFE SAVER TY

[@blessedmutonyi7341]

Thanks for helping

[@Science_Sauce]

Happy to help

[@reygiemaecabinbin2775]

If one of the food samples did not react with the Biuret test, does this mean that the food sample contains no protein?

[@harjingle]

it means no protein if it didn't react

[@almostmybedtime]

Yes.

[@spotitmoregt388]

Dis shit is taking me time to adjust

[@johann296]

thank you thank you

[@Rin-ot7ww]

helps a lot!

[@Tesyeax]

SO HELPFUL!!

[@PixelPioneerV]

Nice right 👍

[@poeticallydamaged8372]

Can biuret’s test identify the presence of carbohydrates or not?

[@almostmybedtime]

Biuret only tests for proteins. Carbohydrates are not proteins, they are sugars or starches, so you can use benedict reagent.