waxing cheese - not recommended

Last night I was made aware of this statement from USU Extension services:


"From time to time, dubious methods arise for preparing and storing various food items. Current information being circulated about the merits of dipping cheese in wax and placing it in storage for many years can be placed in this category. Consider the science.

• Waxing cheese is a method to minimize mold growth on the surface of cheese. It cannot prevent growth or survival of many illness-causing bacteria. In fact, it may promote anaerobic (absence of oxygen) bacteria growth, such as botulism. The practice of waxing cheese for storage is considered extremely unsafe.

• Before the days of refrigeration, cheese was dryer and fermented to a lower pH (higher acid). These types of cheeses were traditionally stored at room temperature with wax covers. The very low pH and fermentation byproducts could inhibit foodborne illness bacteria. An example is parmesan-style cheese. Acid, dryness and fermentation byproducts make this cheese storable at room temperature.

• Today, many cheeses are made strictly for storage under refrigeration. These cheeses may not have a low pH and other factors created in the manufacturing process to prevent illness-causing bacteria growth because the manufacturer knows the cheeses will be kept refrigerated. If someone waxes this cheese and places it in food storage, there is no science indicating any level of safety. In fact, there is evidence to the opposite ? placing cheese meant for refrigeration at room temperature is a significant risk and hazard for foodborne illness.

Contact your local USU Extension office for further information on safe home food preservation and for storage advice." (Brian Nummer, Utah State University Extension food safety specialist, September 9, 2009)


As a result of this information, I no longer recommend waxing cheese for storage.
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