[Lala78]

hi everyone! I'm Lucy, and I am bfing my 13-month-old nights & weekends, buy pump at work. Here's the deal: my milk does not last what on earth? First of all, I never let it sit out. I pump and put bottles directly into the little freezer at work so they are partially frozen for the long drive home, carried in my medela carrying case with contoured ice pack. at home I transfer the milk to lansinoh breastmilk freezer bags and put directly into the deep freeze.

Should be fine, right? nope! randomly the milk will be sour. I have asked dh and daycare to smell it once they thaw it , but sometimes tasting is the only thing that works. I can't expect anyone else to taste it, so my poor little lady has been given many a bottle of sour milk.

any suggestions?

[-erin-]

Could it be excess lipase? kellymom.com :: My expressed breastmilk doesn't smell fresh. What can I do?

Does it do the same thing if you don't freeze it? What if you just keep it cold/refrigerated and give it to her the next day, skip the freezing/thawing step?

[w292737]

that's a bummer, I have nothign, I haven't ran across this

[Jennyt13]

I pump, and put directly in the fridge. I have also noticed that a random bottle here and there will smell/taste spoiled (and yes, telling my MIL who is the caretaker to taste the bottle - really isn't right!!) I can't spell it until its warmed up either.

You could pump, and put directly in the fridge too - I put mine in a cooler - and it seems to do good (for the most part!) if it gets to be more than 3 days old - that is when it starts to seem to smell a bit. I make sure I lable all my milk now!

[joellejello]

Mine does this too, and I think I've determined that it's an excess of lipase, like Erin posted above. It breaks down the milk fat and starts the digestive process sooner. So that makes it go rancid faster. The only solution I found online was to scald the milk before freezing it or storing it in the freezer (so bringing it just to before a boil on the stove). It stops the lipase from breaking down the milk. Unfortunately for me, I've stopped pumping, and all my milk is freezer stash now. So our only solution is to only thaw the milk immediately before feeding it to Sean. And to always double check that it's not already spoiled. Most of it still smells chalky, but that isnt' a problem for the baby, as long as they don't mind the slightly altered taste. The only problem is if it has indeed gone rancid.

[Daffodil]

Sorry I was just lurking (used to EP), but if she is 13 months old, does she even need the pumped milk anymore? I would just breastfeed her while you can and give her solids and water the other times.