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:
“More than ten million women march to work every morning side by side with the men. Steadily the importance of women is gaining not only in the routine tasks of industry but in executive responsibility. I include also the woman who stays at home as the guardian of the welfare of the family. She is a partner in the job and wages. Women constitute a part of our industrial achievement.”
—Herbert Hoover (1874–1964)
“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)
“Our eldest boy, Bob, has been away from us nearly a year at school, and will enter Harvard University this month. He promises very well, considering we never controlled him much.”
—Abraham Lincoln (1809–1865)
“She went in there to muse on being rid
Of relative beneath the coffin lid.
No one was by. She stuck her tongue out; slid.”
—Gwendolyn Brooks (b. 1917)