holy_calamity writes "Proteins extracted from gelatin can dramatically improve the quality of ice cream by preventing the growth of ice crystals that ruin its texture. Perfect smooth ice cream has ice crystals around 20 microns in size, but slight thawing and refreezing makes them grow and ruins the mouth feel, making it gritty. The new proteins are similar to those in the blood of the snow flea, an insect able to keep active in sub-zero temperatures."
Here are the abstract
and the full article
as published in the Journal of Agricultural and Food Chemistry.