Diploma in Perfumery & Cosmetic Science

Skincare Lab Practical~ Making Lotion!!

Wednesday, December 11, 2013

Experiment on extraction of essential oil

Sunday, December 01, 2013

HEY GUYS! HOW'S EVERYBODY DOING?!

Here's one of the lab session we have for our IFF (Flavours & Fragrance) practical.

For this experiment, each group are required to research and select on the raw material they will be working on for the extraction of aromatic compound via the use of steam distillation method. For my group, we have chosen to work on lemongrass!

Before we can carried out the steam distillation process, there are some preparation to be done.

The lemongrass was first broken into smaller pieces as shown in the image above.

Next, it was pour into a blender for blending.

It was then poured into a rbf (round bottom flask). And finally it is ready for steam distillation!

This is the set-up for performing the steam distillation technique. It was somewhat a long process as we were required to wait for sufficient distillate to be collected before proceeding to the subsequent steps. Meanwhile, de-ionised water was added into the rbf whenever necessary. This is to prevent the content in the rbf from drying up.

Meanwhile waiting..... look what I have found!

Isn't it cute? Does it remind you of the bulb people use to hang on Christmas trees? HAHAHAHA!!!
Guess what's inside?
It is actually PEPPERMINT leaves!!!
My friends from other group were working on the extraction of peppermint oil!
[At the end of the experiment, I did get to smell their peppermint oil and guess what?! It smell minty, sweet and refreshing!!! I love the smell as it reminds me of those minty sweet like 'eclipse mint'! HAHAHA!]

After carrying out the remaining procedures, we have finally gotten our yield!!! Hooray!! Check out the "ESSENCE" we have synthesised from our hard work!

As you can see from the image above, it seemed that it was just an empty plastic tube. However, there was actually 0.1g of our precious yield in it. Well, guess we have used too little lemongrass for extraction.

Is it consider a successful experiment? Hmmm....I would say "yes" in terms of carrying out the whole experiment alas, '"not quite successful" for our % yield. In comparison with the previous experiment we have carried out, it is definitely not as successful this time round.

2 weeks ago, we carried out the same experiment (steam distillation) with the use of orange peels for the extraction of Limonene.

And this was the amount of yield my group have acquired for our experiment.

All in all, although our % yield for the lemongrass oil was so little, it was fun extracting out the oil of our desired choice and I love the lemongrass scent too!!!

Before I end off my post, I would like to wish all DPCS yr 3s, 2s & 1s all the best for your MST for this coming week! GOGOGO!!!

I better get to study too~! Bye~!

Faithfully

Jia Hui

Year 2

Analytical lab and skincare lab ~

Saturday, November 23, 2013

HI GUYYYS~

Hi so today i'll update you on what my class has done this week ~

Due to the HBL week most of the lab sessions for my class had been delayed for 2 weeks !

): boohooo!

So After 3 weeks, we finally did our skin care and analytical chemistry lab session yay ~

heheh let me update you with what we have done this week ^^

Some photos of what we were doing for analytical chemistry lab ~

heheh look! have u seen such a pretty toothpaste ~ ;p

Can you guess what are we going to do ?:)

so all this are the solution prepared ! Naoh and HCl ~

so 10ml of HCL was pipetted in to this conical flask and toothpaste was mixed into the conical flask too ~

so we are going to heat the solution now yay ~

When bubbles are produced we have to remove it from the hot plate and let it cool to room temperature ~

So 2 drops of methyl orange are added

TADAHHH! It turns into pretty pink bandung colour hehe

now to the titration part ~ The indicator will reached an end point which is ....

ORANGE COLOURRR ~~~☺

so if u over titrate it will become like this orangey yellow colour ):

AND YOU WILL have to redo the experiment again like me ):

president of student chapter discussing stuff with his partner ^^~

Anyway i will also post about some photos of what we did in skin care today which is similar to the previous post that kaiting has posted!

making our soap !

heating the soap

Heimern stirring the soap hahaha

TADAH !

our reddish yellow soap ~☻

dissolving the ingredients for syndet

pouring cetostearyl alcohol in to the mixture

this is a video of the students making syndet ~

weee adding colouring to our syndet

STIR! STIR! STIR!

placing syndet in mould

heheh pastel purple syndet

Isnt all this labotary experiment interesting :)?

WE LEARNT SO MUCH STUFF~~~

Unlike other courses, we can make soap and syndet and many more other stuff ( there is more to come) during our lab sessions which makes our course so special!

Anyway, MST is coming soon SO JIAYOUS GUISE you left 1 more weeks to study and not to mention you left with 2 week before your vacation ~ ♥

See you guys soon !

xoxo, Vanessa

Year 1