Is it ok to freeze protein shakes? Looking for a scientific answer (and not opinions)
I'm looking for an answer based on something concrete (i.e. expert's advice, scientific article, etc.) and not hearsay or anecdotal evidence. Sorry if that sounds a bit unfriendly, but I'm a bit of a skeptical guy. Thanks!
I hope that was an objective enough answer for you but I would feel remiss to omit my grandmother's very favorite saying..."you catch more flies with honey than with vinegar..." In that post...you're dousing vinegar just a bit. I'll leave it at that.
RNY Gastric Bypass 1-8-08 350/327/200 (HW/SW/CW). I spend most of my time playing with my food over at Bariatric Foodie - check me out!
You freeze and cook beef, fish, chicken... all protein.
Where is Alton Brown when you need him?
From what I have found whey protein is unstable to heat.
Freezing of whey protein concentrate solutions and its effect on protein functionality indicators dx.doi.org/10.1016/0958-6946(94)00019-L
Solutions (15% protein) of a whey protein concentrate (WPC) at pH 6.8 or 5.0 were subjected to fast, intermediate or slow freezing at −17 °C and −30 °C, with an unfrozen control held at +4 °C for 24 h. After thawing at 20 °C, selected physicochemical and functional properties were compared; these included solubility index, heat stability, viscosity, gel strength, freezing point, as well as observations by cryomicroscopy. It was concluded that there was no major detrimental effect of the freezing process alone on any of the WPC solutions studied at either pH. Minor changes in viscosity, microstructure and possibly heat gel strength observed at pH 5.0 may indicate that long-term storage at this pH could lead to development of quality defects. To assess whether freezing might be a suitable alternative method for preservation of concentrated whey protein solutions, the effects of frozen storage must be studied further.http://dx.doi.org/10.1016/0958-6946(94)00019-L
We'd all be out hunting again.
Word of warning: No hunting with Dick Cheney
on 3/13/09 4:15 am
I would suggest, however, that without Cleopatra Nik's brilliant idea of using an ice cream maker, you might get a grainy, clumpy mess as a finished product. It would be perfectly safe to eat, but it wouldn't necessarily be appetizing - unless you perhaps put it through a blender again.
Dave Chambers, 6'3" tall, 365 before RNY, 185 low, 200 currently. My profile page: product reviews, tips for your journey, hi protein snacks, hi potency delicious green tea, and personal web site.
This was one of the first questions I asked my nut. She told me it was fine so long as the container doesn't specifically state not to freeze it. (Atkin's shakes for example say DO NOT FREEZE) I haven't made any protein ice cream.. yet.. but I plan to make some protein popsicles with my nectar later today :)