Update #1:
http://www.ncbi.nlm.nih.gov/pubmed/17556807
Dark storage limited the decrease in juice asparagine to some extent. Aromatic lactones, such as gamma-decalactone and gamma-dodecalactone, both in skin and in flesh tissues increased more rapidly when the fruits were stored under a light condition, irrespective of fruit harvest stage. From these results, we conclude that fruit storage under a light condition is better for fruit quality of the 'Hakuho' peaches than storage in darkness.
http://naldc.nal.usda.gov/download/17907/PDF
[...]These results indicate that postharvest application of UV-C radiation can decrease decay caused by ripe rot in blueberries and may enhance antioxidant levels.
Review papers:
http://www.ncbi.nlm.nih.gov/pubmed/3536313
http://openagricola.nal.usda.gov/Record/FNI86010719
http://openagricola.nal.usda.gov/Record/FNI86011422
The current status of research on the application of ionizing radiation for improving the storage of temperate fruits, i.e., apple, pear, peach, nectarine, apricot, cherry, plum, strawberry, bilberry, cranberry, raspberry, and black currant, is reviewed. Changes in fruit metabolism, chemical composition, texture, and organoleptic quality attributes are discussed with reference to the irradiation dose. The feasibility of using radiation either alone or in conjunction with heat treatment, refrigeration, and controlled atmospheres (CA) for the control of storage decay caused by fungal pathogens is considered. Areas of further research are suggested before irradiation could be considered for practical application in some of these temperate fruits. The recent trends in the possible use of irradiation for disinfestation of certain pome and stone fruits and the prospects for the commercial utilization of irradiation for improving the market life of strawberries are discussed.
Nevertheless, I've contacted LG Support and asked for explanations concerning the more technical aspects of their various light technologies for fruit/vegetable storage, and I'll update this post once I receive their answer.
- Edit -
Well, LG support never got back to me, so I can only be more distrustful to their claims.
Old answer:
http://pharmacie.hug-ge.ch/rd/posters/espen09_gb_vitc.pdf
Similarly, vitamin C degradation was reduced in IV administration sets stored in the
dark compared with IV administration sets stored in the ambient light or under an UV lamp
http://www.clinchem.org/content/50/1/135.full
When solutions of multivitamin preparations (MVPs) are exposed to light, H2O2 as well as organic peroxides are generated and the concentration of vitamin C decreases.
Of course, this study focuses on byproducts of Vitamin C, but for our needs (Vitamin C) it's a good enough source.
http://www.lg.com/ae/microsite/healthyliving/products-refrigerator.swf
Green Tea Ions
I mean, seriously now...?
Someone should ask Mitsubishi and LG for some scientific references for their claims. To me, it looks like marketing bull.