There’s no denying that homemade smoothies taste delicious. However, they have a tendency to separate and oxidize, especially if you’re trying to save the leftovers. Not only does this make the smoothie look much less appealing, it can also alter the taste and texture. Running the blender again could solve the problem, but the real solution lies in the form of a vacuum blender. This innovative type of blender hasn’t been around long, but smoothie drinkers may want to check vacuum blenders out. Vacuum blenders don’t look much different than your average household blender. In fact, depending on the vacuum mechanism, there’s virtually no difference between the two aside from a vacuum attachment that can be placed on top of the blender jar to suction out air. Vacuum blending involves a manual or electric vacuum pump accessory that removes excess air from the finished product. A tightly formed seal helps prevent any extra air from leaking out.  We’ve rounded up the best vacuum blenders at a variety of price points. Some of them are best for smoothies while others can make everything from soups to juices. Don’t be fooled by its designation as ...