Barrier

this technology is very cool and interesting. however, it still have barriers. for instance,it does not have doors or drawers. so,the only way to use it is by just stick it in or pull it out. so, how about to avoid cat fur or human hair from entering the refrigerator? any dust or small thing can absorb into the gel easily.
the second thing is what about the stuff that really does need to remain cold like ice-cream? does the consumer need to buy another one for the ice-cream? it just waste of money to buy two or more refrigerator instead of one that has many kind of usages.

the third one is what about food that is left in there too long and it gets moldy? Certainly this fridge is not immune from the problem that occurs in normal fridges. so,u  have to clean the mold from the gel oftenly.

the studies were undertaken to investigate the impact of ultraviolet (UV) irradiation on the gel strength, viscosity, and thermal properties of a commercially procured fish gelatin sample.  Results indicated the prospects of employing UV radiation as an alternative method over conventional means for improving some of the quality attributes of fish gelatin.

the purpose of put things in the refrigerator is to slow the growth of bacteria and fungus on your food. not to make your food cooling or whatsoever. If you can do that by means other than refrigeration (luminescence), then it can work just as well. In fact, luminescence probably isn’t any different from salting in terms of what it does. Most bacteria and fungi can’t grow in a highly salty environment and most can’t grow when bathed in certain wavelengths of light.