Do high-end blenders destroy nutrients?
I've been making green smoothies using a cuisinart blender. It does an OK job with its 0.9 HP motor but I've heard a lot of rave reviews from people on this forum that use Blendtec as well as Vitamix. I'm considering getting a Blendec Total Blender which has a 3 HP motor.
My concern is that these high-end blenders seem to be so powerful that the friction from the blades generate heat so much so that you can make steaming hot soup in several minutes.
If I want to make green smoothes and be able to preserve as much nutrients as I can, it seems that the heat generated from such as high powered blender will actually destroy some of the nutrients (which is what some manufacturers of juicers claim). On the flip side, I've also read that a high powered blender is needed to actually break through the tough fibrous walls of green leafy veggies.
I'm confused, does anyone have any thoughts on this? Is there any information available on what temperature should not be exceeded in order to preserve nutrients?