Catalase
Posted: 20 Mar 2013, 14:57
Hi all,
we're about to start the catalase enzyme prac, & last week a labbie from another school & I found that capsicum isn't giving the lovely perky foam it has in previous years for some reason. Could be because of the looong hot summer we've had in SA, but capsicum we bought from several shops all failed to react much at all at full strength with fresh 6% peroxide, so I bought a bunch of silverbeet figuring that might work, & happily it works a treat
Super cheap as well, only $1.49 for a bunch!
The method that worked was to puree equal grams silverbeet to ml water, eg 100g silverbeet torn up & put in 100ml water, then strained through a chux cloth.
5ml of 6% H2O2 in a 50ml measuring cylinder + 3ml silverbeet extract produced 47ml of foam in 30 seconds. Lovely pretty green foam
Sadly it doesn't smell as nice as the capsicum version, but I'm just happy it's not liver
we're about to start the catalase enzyme prac, & last week a labbie from another school & I found that capsicum isn't giving the lovely perky foam it has in previous years for some reason. Could be because of the looong hot summer we've had in SA, but capsicum we bought from several shops all failed to react much at all at full strength with fresh 6% peroxide, so I bought a bunch of silverbeet figuring that might work, & happily it works a treat
Super cheap as well, only $1.49 for a bunch!The method that worked was to puree equal grams silverbeet to ml water, eg 100g silverbeet torn up & put in 100ml water, then strained through a chux cloth.
5ml of 6% H2O2 in a 50ml measuring cylinder + 3ml silverbeet extract produced 47ml of foam in 30 seconds. Lovely pretty green foam
Sadly it doesn't smell as nice as the capsicum version, but I'm just happy it's not liver