Long soaking kegs in W5

[Fal]

Is it safe to soak kegs with w5 when not in use over night or longer?

[Leann ull]

You shouldn't need to I normally half fill 2 hours then invert and it's spotless after a big rinse.
Every 2nd or 3 fill I do a complete strip down


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[Fal]

Thanks CH, I'll give that a go tonight

[Leann ull]

No worries, sorry should have said red hot water if you can or at least over 60 to activate the w5
I've 6 of my own to strip and do the same later, learnt the hard way a couple of years ago to put the bits for each keg in little marge tubs rather than just throw the whole lot in a bucket for cleaning, each second hand Keg has its own little personality and the bastards are not always compatible or universal!

[Fal]

I know, I made that mistake too!

[beerfly]

I have left kegs soaking for a day or two. Between 40 and 60 ℃ is the best temp for it.
There are enzymes in it so just like your mash avoid over 70.

[Fal]

Cheers beerfly, good to know. I usually use a downstairs electric shower for instant hot water to clean them. But I have been know to use boiling water too. I'll know to avoid that next time.

[Leann ull]

What are the issues going over 70 Beerfly?

[Drum]

What are the issues going over 70 Beerfly?

Denaturing of the enzymes i'd imagine. W5 is a laundry detergent, so it probably has protease, lipidase and our friendly neighbourhood amylase. Temps a little bit over 70C will kill any enzyme before it can do it's job but they work best in the range of 30 to high 60's celsius, same as in a mash.   Rinsing with boiling water after soaking in W5 would be good to get rid of any residue after the W5 has done it's job

[LordEoin]

aparently the enzyme is Protease. Optimal at 42C
Its purpose is "protein catabolism by hydrolysis of the peptide bonds that link amino acids together in a polypeptide chain"
in other words it breaks proteins into smaller bits. Like breaking a chain by cutting some links.
Handy for our gut to make stuff more easily digestible or for getting poop out of nappies etc

[Leann ull]

[DEMPSEY]

Gee I did not know this,goes to show you never stop learning 

[beerfly]

yep what they said

[Fal]

And poop out of baby gro's....I discovered this recently. The Missus is delighted I Homebrew now!