Showing posts with label I'm a Scientist. Show all posts
Showing posts with label I'm a Scientist. Show all posts

Friday, 10 November 2017

Are food colourings safe to eat?

that was a very interesting question at I'm a Scientist

My answer...




Ioannis Zabetakis answered on 10 Nov 2017:

I’ll tell you a story: if you drink squash at the house, have a look at the label, you can read about the flavourings and the artificial sweetenets you have there…
Each of these chemicals is safe to eat on its own but NOBODY has studied if eating two of these chemicals together is safe or toxic…Imagine now how many different chemicals (preservatives, sweeteners, flavourings etc) we eat every day. All these end up in our body…nobody knows if they react together or if they cause any synergistic effect. Synergy is when the end result is greater of the sums.
now look at this picture



two chemicals can have this synergistic toxicity…
conclusion: the less chemicals we eat, the better!

Tuesday, 7 November 2017

I am a Scientist - Food Zone



From Monday 6th November (yesterday) till Friday 17th November, primary school teachers and students can participate in an online chat about various science themes "I am a Scientist".

I am glad to contribute to the "Food Zone"

Please, pass this word around to encourage your kids, your students, your friends to take part!
It is great fun and a super way to communicate Science.

Yesterday, at my first chat, I was delighted to be asked questions ranging from which type of chocolate is best (white, dark or milk) to why oil is lighter than water.

Great time! Thanks to all of you for your questions and your Teachers for making this true!

Chat soon again,

Yannis