Just been to the supermarket and spotted some ready prepared red cabbage indicator #Gardenindicators
25.01.2026 17:59
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Just been to the supermarket and spotted some ready prepared red cabbage indicator #Gardenindicators
I think the red lion is still the top name for pubs in the uk, the chemistry tribute to that could be the methyl red lion.
I really enjoyed reading this article!
#gardenindicators in action: testing to see if our student’s soap is safe for the skin
#gardenindicators in print:
How to find acids with flowers: Robert Boyle’s ‘syrrup of violets’ and the chemistry of color indicators
link.springer.com/article/10.1...
#gardenindicators in action
Yes it was very impressive, good view from the sports field near DRA.
Seasonal #Gardenindicators time. The bramble whiskies are ready! There’s a sweet one (made from Grants) and a more fiery one (made from famous grouse). Both tasty 🙂
Soap soap soap + cabbage indicators.
It isn’t all #Gardenindicators in our lab, we’ve been making our own phenolphthalein’s too. They are different colours and pleasingly, all worked well in an acid/base titration. #Chemsky
It was good! I will need to thaw some more brambles for gin/science 🙂
Here’s the tinned pineapple juice version bsky.app/profile/iain...
I’m not sure, I think the peach juice would be fine in a G&T. When I did the pineapple juice version, there was a hint of pineapple flavour, but mostly tonic. Colouring the fruit would be interesting! Maybe a teaspoon of bramble or raspberry juice would make the fruit pieces go purple?
Further tinned fruit results today, mixing the juice from tinned peaches with bramble extract gives a beautiful purple colour! The left glass contains a mixture of bramble juice, tinned peach juice and water. The right glass contains diluted bramble juice. #Gardenindicators #Chemsky
You have started a new gin fashion! I’ve had a few in testing, purely for science purposes though…. 🙂
You have also inspired a new gin and tonic colour! #Gardenindicators
I love it when chance observations result new ideas. Your hibiscus tea colour change was very thought provoking! I have some more pictures to send to you.
🤩 amazing! Thank you Starbucks for raising the price of the passion tea to inspire my making it at home. This will be a fun addition to our exploration of mordants!
Hibiscus tea samples. Left to Right: freshly brewed tea, tea with pineapple juice from a tin can, tea with acetic acid and tea with dilute HCl. The purple colour likely comes from complexation of the tin ions with anthocyanins from the hibiscus flowers.
@manhattanscientist.bsky.social has inspired a nice #Gardenindicators experiment! The samples below, all contain Hibiscus tea. L to R, tea, tea with pineapple juice from a tin can, tea with acetic acid and tea with HCl. Those tin ions make a lovely purple complex with anthocyanins!
My colleague Marko Jeran turned me onto this electrolysis demonstration using our cabbage indicator.
#anthocyanin #redox #acidbase
2 Kilner jars with whisky, sugar and brambles. These will be left for 3 months before the berries are filtered out.
This seems to becoming a tradition for the end of August. Bramble whisky round 2 now in progress. A double batch this time as well. #Gardenindicators I look forward to the end of November when they will be ready. One jar contains famous grouse, the other is grant’s triple wood blend. #chemsky
Yes, although the colour range might not be quite as good as red cabbage or butterfly pea flower.
Plenty of beautiful
Hydrangeas around St Andrews now. Some will hopefully get used as #Gardenindicators in teaching next year.
One for any #Gardenindicators fans.
Anyone who has tried making naphtholphthalein will have encountered this compound at some point.
Happy hydrangeas!
It has been a while, but another #Gardenindicators video is now ready. This one shows a cheap and cheerful way to extract blackberries, works for raspberries too. youtu.be/HIV1Tgpa1-g?...
Alright, this is an awesome experiment - complexation, solubility, indicator acid/base, it’s got everything!! pubs.acs.org/doi/10.1021/...
A colourful and quick experiment with tinned pineapple juice youtu.be/n62zByID52I?si… #Gardenindicators #Snackindicators #Chemsky
I got a nice #Gardenindicators gift this week from
@AlchemistAngus. A can of crushed pineapple! The anthocyanins in blackberry extract can be used to detect dissolved tin(II) ions in the pineapple juice. The anthocyanin/tin complexes give a lovely purple colour! #Chemsky
Cheers for the earlier heads up! This was from near Stirling at 6 pm.
