Recent observations suggest that the impact of temperature and cooking on vitamin C may have been overestimated:
Since it is water soluble, vitamin C will strongly leach into the cooking water while cooking most vegetables — but this doesn't necessarily mean the vitamin is destroyed — it's still there, but it's in the cooking water. (This may also suggest how the apparent misconception about the extent to which boiling temperatures destroy vitamin C might have been the result of flawed research: If the vitamin C content of vegetables (and not of the water) was measured subsequent to cooking them, then that content would have been much lower, though the vitamin has not actually been destroyed.)
Not only the temperature, but also the exposure time is significant. Contrary to what was previously and is still commonly assumed, it can take much longer than two or three minutes to destroy vitamin C at boiling point.
No answer from Aptamil but just read this on Wikipedia
Recent observations suggest that the impact of temperature and cooking on vitamin C may have been overestimated:
Since it is water soluble, vitamin C will strongly leach into the cooking water while cooking most vegetables — but this doesn't necessarily mean the vitamin is destroyed — it's still there, but it's in the cooking water. (This may also suggest how the apparent misconception about the extent to which boiling temperatures destroy vitamin C might have been the result of flawed research: If the vitamin C content of vegetables (and not of the water) was measured subsequent to cooking them, then that content would have been much lower, though the vitamin has not actually been destroyed.)
Not only the temperature, but also the exposure time is significant. Contrary to what was previously and is still commonly assumed, it can take much longer than two or three minutes to destroy vitamin C at boiling point.
which makes me feel much more confident that boiling water is just FINE. Vitamin C seems to be the only nutrient that is heat-sensitive but from my reading is seems you have to boil it for more than 8 minutes to destroy it. Obviously that is not the case with adding just-boiled water to a bottle, dumping some formula in and then rapidly cooling.
Courtcourt, to an extent yes (although weirdly from the sources I have read today it seems some nutrients are actually made more available to our bodies with heat) but the time a food is exposed to a high temperature is important, it's not the temperature alone that damages nutrients. Nobody is boiling the formula for 20 minutes, now that might do some damage. But just putting formula in very hot water for a matter of seconds or minutes is really unlikely to do any harm as long as the temperature is brought down quickly.
ETA: also when we're talking about cooking, there's high temps and high temps - 100 degrees C is actually not considered a "high temperature". There are processes in food preparation that go waaaaaaaaaaaaaaaay beyond the temperature of boiling water. Also if heat sensitive vitamins can survive the canning process then they can definitely survive immersion in water less than 100 degrees for a minute. :]
I dont, never have and never will use boiling water. Having worked with animal nutrition for so long I KNOW it's true of their foods that cooking at high temps destroys nutrients and is harder on their bodies. To me, and my thinking, I would rather have taken that tiny risk than a guarantee of less nutritional value. Even if slight.
And personally, knowing tons of moms with babies my age in person (and I mean lots, I am a part of at least 6-7 baby groups and do things regularly) I have never seen another mom use boiling water.
I am totally ok with it. There are also SIDS risks, and other risks that parents pick and choose to take. Formula is no different.
Ok. :] I just didn't want anyone to freak out unnecessarily over this thinking that their LO is going to be malnourished or something.
I find it tiresome to read all the differing opinions on 'what is right for your baby'. As a mum you know what is no good for your own child, no 1 person is the same.
I think a lot of the misunderstanding on here is because of the different recommendations between the UK and the US (I'm sure I read once that the formulas are made differently so the powder needs the hotter temperature to dissolve in the UK with how our recommendations are).
Sometimes I wonder if this forum should have a main general FF bit for stuff like guilt, routines, quantities, teats and the like and then subforums for making bottles within the UK guidelines and within the US guidelines to cut down on the confusion? Or people put where in the world they are in their thread titles for this kind of stuff since it differs so massively?
For what it's worth our very high-tech system is when I boil the kettle to make a cuppa I bung the excess water in a thermos flask, so when I go to make bottles it's cooled off boiling point but is still over the 70 degrees recommended here for nasty-killing. Tragically this requires me to have a constant stream of cuppas over the course of the day, with associated biscuit to wash it down - the hardships I endure eh?
Then I add the powder to half the quantity of the flask hot water, and add cooled boiled water to drop the temperature to where it's ready to drink to make up the remainder of the feed (and I account for the fact the quantity of liquid rises when I add the powder in the amount of water I put in before anyone worries about that). Works for us and is about as close to the guidance as I can get while remaining (relatively) sane.