The ability of degradable molecules to absorb lights wavw

Yes, light is one of the things that causes food to spoil faster. This is true of both natural light and artificial light. This process is called photodegradation.

A. C Somersall has written:

'Modelling of photodegradation in solar cell modules of substrate and superstrate design mode with ethylene-vinyl acetate as pottant material'

Almost all foods are exposed to light from natural and/or artificial sources. The exposure of foods to light can result in the photodegradation (or spoilage) of these products. This photodegradation usually occurs in food constituents, such as pigments, fats, proteins, and vitamins and results in discoloration, off-flavor development, and vitamin losses. The light that is absorbed by the food can cause deteriorative reactions of the food constituents. In most solid foods, the light only penetrates the outer layer of the product and photodegradation occurs in this surface layer. Discoloration on the surface of foods can certainly affect consumer acceptance of these products. In liquid foods, light penetration can be greater and with mixing of the products due to agitation, larger portions of food constituents may be deteriorated. The light sensitivity of a food depends on many factors including the: light source strength and type of light that it emits; distance of the light source form the food; length of exposure optical properties of the packaging materials; oxygen concentration of the food; and the temperature. The information found in this backgrounder was adapted from a series of fact sheets developed by Dr. Robert Gravani, Cornell University

Photosensitive materials have their chemistry changed by light. The most energetic light is that pesky short wavelength ultraviolet or UV light. It tends to take weak covalent bonds apart if it can. Any material with weak covalent bonding may be subject to photodegradation. There are any number of materials - or components of materials - that fall into this group. As a group, the polymers, plastics composed of long chain molecules, have a number of different flavors that can get hammered by UV radiation. Many plastics will stand up to sunlight (specifically the UV) fairly well, and automotive paint is just one of them. And pollution (particularly oceanic polution) by plastics is reaching monumental proportions because the materials hang around so long. But as a group, the polymers take a beating when the energy in the UV rays that pound the material break chemical bonds and destroy the integrity of the material. We've seen what sun does to a plastic grocery bag. The most photosensitive materials are photographic films. But they are designed to do what they do in the specific way that they do it. They could easily be classified as the material most sensitive to photodegradation.