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#1
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Shaken, not swirled
If you shake expressed breast milk it'll break down all the good stuff. Is
this an old wives tale or a proven fact? I googled and couldn't find much in the way of proof. |
#2
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Shaken, not swirled
JessicaG schrieb:
If you shake expressed breast milk it'll break down all the good stuff. Is this an old wives tale or a proven fact? I googled and couldn't find much in the way of proof. No, but if you microwave any kind of milk the protein structure will be altered. cu nicole |
#3
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Shaken, not swirled
On Aug 15, 3:27?pm, NL wrote:
JessicaG schrieb: If you shake expressed breast milk it'll break down all the good stuff. Is this an old wives tale or a proven fact? I googled and couldn't find much in the way of proof. No, but if you microwave any kind of milk the protein structure will be altered. cu nicole http://www.bflrc.com/ljs/breastfeeding/shakenot.htm |
#4
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Shaken, not swirled
"Chris" wrote in message ups.com... On Aug 15, 3:27?pm, NL wrote: JessicaG schrieb: If you shake expressed breast milk it'll break down all the good stuff. Is this an old wives tale or a proven fact? I googled and couldn't find much in the way of proof. No, but if you microwave any kind of milk the protein structure will be altered. cu nicole http://www.bflrc.com/ljs/breastfeeding/shakenot.htm Thanks for the link, it's one of the ones I had googled. This just sounds very urban-legendy to me, I was hoping for something a little more scientific. |
#5
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Shaken, not swirled
On Aug 15, 8:13?pm, "JessicaG" wrote:
"Chris" wrote in message ups.com... On Aug 15, 3:27?pm, NL wrote: JessicaG schrieb: If you shake expressed breast milk it'll break down all the good stuff. Is this an old wives tale or a proven fact? I googled and couldn't find much in the way of proof. No, but if you microwave any kind of milk the protein structure will be altered. cu nicole http://www.bflrc.com/ljs/breastfeeding/shakenot.htm Thanks for the link, it's one of the ones I had googled. This just sounds very urban-legendy to me, I was hoping for something a little more scientific. yeah, it would be better if she cited some of sources rather than just listing her credentials. LLLI actually says TO shake before testing temp. I'll ask for some sources from folks on another bf'ing board where they say not to shake all of the time! |
#6
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Shaken, not swirled
JessicaG wrote:
http://www.bflrc.com/ljs/breastfeeding/shakenot.htm Thanks for the link, it's one of the ones I had googled. This just sounds very urban-legendy to me, I was hoping for something a little more scientific. I've been tracking this for ages, and looked for papers, and as far as I can track down, it's complete urban legend when you're talking about normal shaking. The URL cited above is the one and only trackable source. I contacted the author of the piece, and she has no scientific sources - just a throwaway remark made at a conference. She said that she liked the story and kept it because it respects mother's milk as a living substance, not because there's any evidence behind it. Meanwhile I've consulted with a biochem/chem degree and a molecular biology PhD (my partner) who works daily with protein antibodies, DNA/RNA, and cell culture, and he said the idea was incorrect. (And kinda wished it was that easy to denature proteins and cells, sometimes!) There has been a similar consensus from highly qualified biologists/chemists on the pumpmoms groups. Vigorous and prolonged shaking to the point of foaming the whole container of milk _may_ denature proteins somewhat, and possibly disrupt some cells, but not affect the nutritional qualities of the milk otherwise. But I've never met anyone who shakes their milk like that! Lara |
#7
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Shaken, not swirled
On Aug 16, 8:52 am, (Lara) wrote:
JessicaG wrote: http://www.bflrc.com/ljs/breastfeeding/shakenot.htm Thanks for the link, it's one of the ones I had googled. This just sounds very urban-legendy to me, I was hoping for something a little more scientific. I've been tracking this for ages, and looked for papers, and as far as I can track down, it's complete urban legend when you're talking about normal shaking. The URL cited above is the one and only trackable source. I contacted the author of the piece, and she has no scientific sources - just a throwaway remark made at a conference. She said that she liked the story and kept it because it respects mother's milk as a living substance, not because there's any evidence behind it. Meanwhile I've consulted with a biochem/chem degree and a molecular biology PhD (my partner) who works daily with protein antibodies, DNA/RNA, and cell culture, and he said the idea was incorrect. (And kinda wished it was that easy to denature proteins and cells, sometimes!) There has been a similar consensus from highly qualified biologists/chemists on the pumpmoms groups. Vigorous and prolonged shaking to the point of foaming the whole container of milk _may_ denature proteins somewhat, and possibly disrupt some cells, but not affect the nutritional qualities of the milk otherwise. But I've never met anyone who shakes their milk like that! Lara Of course, the protein structures of milk changes by temperature and agitation. You heat cow's milk to 190 deg to induce change in protein structure and then cool to 110 to make yogurt. The changed protein structure gives you firm yogurt. You churn milk at 60 degrees to separate butter fat as well as induce change to protein structue. But all these actions are extreme that induce changes in protein structures. The author of the article is stretching the truth by asserting that changes from violent shaking (churning) are same as regular shaking. |
#8
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Shaken, not swirled
I've been tracking this for ages, and looked for papers, and as far as I
can track down, it's complete urban legend when you're talking about normal shaking. The URL cited above is the one and only trackable source. I contacted the author of the piece, and she has no scientific sources - just a throwaway remark made at a conference. She said that she liked the story and kept it because it respects mother's milk as a living substance, not because there's any evidence behind it. Meanwhile I've consulted with a biochem/chem degree and a molecular biology PhD (my partner) who works daily with protein antibodies, DNA/RNA, and cell culture, and he said the idea was incorrect. (And kinda wished it was that easy to denature proteins and cells, sometimes!) There has been a similar consensus from highly qualified biologists/chemists on the pumpmoms groups. Vigorous and prolonged shaking to the point of foaming the whole container of milk _may_ denature proteins somewhat, and possibly disrupt some cells, but not affect the nutritional qualities of the milk otherwise. But I've never met anyone who shakes their milk like that! Lara Wow, thanks for the great info! It just amazes me that such misinformation (possibly) is allowed to perpetuate and be taught as truth. I can imagine folks feeling guilty over shaking the milk or getting scolded by a know-it-all when caught not swirling. It's so silly when we have so much other stuff to worry and feel guilty about! |
#9
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Shaken, not swirled
On Aug 16, 10:24?pm, "JessicaG" wrote:
I've been tracking this for ages, and looked for papers, and as far as I can track down, it's complete urban legend when you're talking about normal shaking. The URL cited above is the one and only trackable source. I contacted the author of the piece, and she has no scientific sources - just a throwaway remark made at a conference. She said that she liked the story and kept it because it respects mother's milk as a living substance, not because there's any evidence behind it. Meanwhile I've consulted with a biochem/chem degree and a molecular biology PhD (my partner) who works daily with protein antibodies, DNA/RNA, and cell culture, and he said the idea was incorrect. (And kinda wished it was that easy to denature proteins and cells, sometimes!) There has been a similar consensus from highly qualified biologists/chemists on the pumpmoms groups. Vigorous and prolonged shaking to the point of foaming the whole container of milk _may_ denature proteins somewhat, and possibly disrupt some cells, but not affect the nutritional qualities of the milk otherwise. But I've never met anyone who shakes their milk like that! Lara Wow, thanks for the great info! It just amazes me that such misinformation (possibly) is allowed to perpetuate and be taught as truth. I can imagine folks feeling guilty over shaking the milk or getting scolded by a know-it-all when caught not swirling. It's so silly when we have so much other stuff to worry and feel guilty about! - Hide quoted text - - Show quoted text - You are sooo right! I thought I had learned to not repeat things I hadn't verified as fact myself. lol. I have now for certain. I will share nothing but personal experience stories from now on! This other site where I heard that has some people who have minor credentials, so it was me being lazy to accept that one as truth and the others as wacky. lol. |
#10
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Shaken, not swirled
JessicaG wrote:
It just amazes me that such misinformation (possibly) is allowed to perpetuate and be taught as truth. I can imagine folks feeling guilty over shaking the milk or getting scolded by a know-it-all when caught not swirling. It's so silly when we have so much other stuff to worry and feel guilty about! Absolutely. I know the commonsense test doesn't always apply, but think about this - if protein antibodies were denatured and cells broken open by simple hand agitation, how on earth could humans jog and white-water raft and bungie jump? Lara |
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