Safe Spectrum lighting by Promolux brings full balanced lighting to your dairy display cases. In addition to illuminating fresh dairy products in the best natural looking light, Promolux Safe Spectrum lamps produce lower levels of both ultraviolet and visible spectrum radiation. As a result, Promolux lighting reduces problems of reduced quality and shortened shelf life in milk, cheese and ice cream arising from lipid oxidation and damage to colors, textures and flavors caused by light.
The Promolux advantage in your dairy case is clear:
simply spectacular commercial dairy lighting
food safe lighting extends shelf life for all dairy products
profitable - top notch displays attract sales
How Dairy Products React to UV Light
In as little as two hours of exposure to regular in-store dairy display case
lighting, the fat in dairy products starts to become rancid--a photochemical reaction
known as lipid oxidation.
Cream and milk both lose nutrients in this process, including riboflavin and
vitamins A and D, and can develop unpleasant metallic, cardboard, or burnt
flavors. While many dairy products are now sold in opaque packaging to
prevent lipid oxidation, transparent containers are more effective for marketing purposes.
How photo oxidation degrades milk has been demonstrated in numerous studies on the effects of natural light and fluorescent lighting in food displays. Milk loses flavor under conventional fluorescent lights and also suffers nutrient losses, including the degradation of riboflavin fand vitamins A and D.
Oxidation damage is more common in milk packaged in transparent glass or plastic, though it can also occur in milk contained in paper cartons when light is intense and the cartons sit for long periods of time.
Even though cheese is light-sensitive, it is often packaged in clear wrapping. The effects
of light on cheese are most noticeable in changes to the color of the cheese:
the portions that are protected from light, such as the bottom of
block or the part beneath the
than the portions of the cheese block that are exposed to light. With
prolonged exposure, orange cheeses will turn pink and develop off flavors.
Unwrapped cheeses in self-service display cases, such
feta, are extremely sensitive to lipid oxidation. When exposed in this
feta develops off-flavors and turns yellow.
Ice creamis doubly affected by poor dairy display case lighting. When exposed
to supermarket fluorescent lights, fresh ice cream flavors and texture are easily damaged.
Heat and radiation from regular supermarket fluorescent lighting can
also cause the top surface of ice cream to melt, separating the water
in the ice cream from the other ingredients. When this water refreezes,
ice crystals form in the ice cream.
Natural colors remain true with Promolux supermarket
dairy lamps because they have a more balanced visible spectrum than other
fluorescent lamps, including more of the red and blue wavelengths, and
more moderate levels of the most damaging visible spectrum wavelengths,
yellow and green. Promolux retail dairy lighting also emit lower levels
of ultraviolet radiation and heat than other commercial lighting commonly
found in grocery dairy departments, making these specialty dairy display
case lamps the perfect lighting choice for the retail dairy industry.