The Importance of Tightly Controlled Relative Humidity
Maintaining high relative humidity (RH) in modified atmosphere packaging is important because it “results in reduced transpiration of water from the produce, thereby reducing wilting, shriveling, and loss of firmness. The accumulation of vapor in the packaging depends on the rate of water loss from the product, its surface area, the water vapor transmission rate (WVTR) of the film, and the external environment temperature.”
“The RH in most sealed packaging is near the saturation level. Therefore, even very small fluctuations in temperature during storage or shipment may result in water condensation on the surface of both film and produce. Condensed water on the produce surface may adversely affect the gas exchange, leading to an unfavorable internal atmosphere.” Even more detrimental may be the enhancement of produce decay, and physiological processes such as regrowth. In addition, certain human pathogens may proliferate when in-pack atmosphere contains high humidity and low O
2.
Read more about this topic: Modified Atmosphere/modified Humidity Packaging
Famous quotes containing the words importance, tightly, controlled and/or relative:
“When we can begin to take our failures nonseriously, it means we are ceasing to be afraid of them. It is of immense importance to learn to laugh at ourselves.”
—Katherine Mansfield (1888–1923)
“Shackled heart, free spirit.—Whoever binds his heart tightly and imprisons it may indulge his spirit in many liberties: I have already said that once. But no one believes me unless he already knows.”
—Friedrich Nietzsche (1844–1900)
“The roaring alongside he takes for granted,
and that every so often the world is bound to shake.
He runs, he runs to the south, finical, awkward,
in a state of controlled panic, a student of Blake.”
—Elizabeth Bishop (1911–1979)
“Three elements go to make up an idea. The first is its intrinsic quality as a feeling. The second is the energy with which it affects other ideas, an energy which is infinite in the here-and-nowness of immediate sensation, finite and relative in the recency of the past. The third element is the tendency of an idea to bring along other ideas with it.”
—Charles Sanders Peirce (1839–1914)