Featured Research

from universities, journals, and other organizations

Cool-Water Wash For Eggs Can Help Prevent Microbial Contamination

Date:
January 3, 2007
Source:
USDA/Agricultural Research Service
Summary:
Using cooler water to wash shell eggs during a second washing can help cool them quicker. This reduces the potential of foodborne pathogen growth both inside the eggs and on the eggshell surface, according to scientists with the Agricultural Research Service (ARS).

Salmonella enteritidis.
Credit: Photo by Jean Guard-Petter

Using cooler water to wash shell eggs during a second washing can help cool them quicker. This reduces the potential of foodborne pathogen growth both inside the eggs and on the eggshell surface, according to scientists with the Agricultural Research Service (ARS).

Related Articles


ARS food technologists Deana Jones and Michael Musgrove in the agency's Egg Safety and Quality Research Unit at Athens, Ga.--working with Auburn University colleagues A. Brooke Caudill and Patricia A. Curtis--looked at the frequency of Salmonella, Campylobacter, Listeria and other bacteria in eggs commercially washed in cool water. Their findings have been reported in the Journal of Food Safety.

ARS is the U.S. Department of Agriculture's chief scientific research agency.

Currently, processors who choose to produce eggs that qualify for the USDA quality shield are required to wash them in water that is at least 90F, or 20 degrees warmer than the warmest egg entering the processing line. Furthermore, these eggs are required to be sprayed with a sanitizing rinse at least as warm as the wash-water temperature. To prevent the growth of potential foodborne pathogens associated with eggs, these warm eggs must then be cooled quickly for storage.

To ensure the eggs are safe for human consumption, USDA requires that all shell eggs be stored at 45F or lower after processing. That's because Salmonella--the organism most often associated with foodborne disease and eggs--and other bacteria don't grow well at refrigerated temperatures. Getting to the target temperature quickly can make a big difference.

The researchers tested three water-temperature schemes in commercial dual-washer systems: water at 120F for both washers; water at 120F for the first wash and 75F for the second; and both washers at 75F. They found that using a warm temperature in the first washer, followed by a cool temperature in the second one, could provide the greatest benefit in terms of both reduced egg temperature and acceptable microbial levels.

While Salmonella, Campylobacter and Listeria were all detected in shell emulsion and wash-water samples from cool-water washing treatments, none were detected in the egg contents throughout the storage period of eight weeks.


Story Source:

The above story is based on materials provided by USDA/Agricultural Research Service. Note: Materials may be edited for content and length.


Cite This Page:

USDA/Agricultural Research Service. "Cool-Water Wash For Eggs Can Help Prevent Microbial Contamination." ScienceDaily. ScienceDaily, 3 January 2007. <www.sciencedaily.com/releases/2007/01/070102122528.htm>.
USDA/Agricultural Research Service. (2007, January 3). Cool-Water Wash For Eggs Can Help Prevent Microbial Contamination. ScienceDaily. Retrieved February 27, 2015 from www.sciencedaily.com/releases/2007/01/070102122528.htm
USDA/Agricultural Research Service. "Cool-Water Wash For Eggs Can Help Prevent Microbial Contamination." ScienceDaily. www.sciencedaily.com/releases/2007/01/070102122528.htm (accessed February 27, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Friday, February 27, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Could a $34 Smartphone Device Improve HIV Diagnosis in Africa?

Could a $34 Smartphone Device Improve HIV Diagnosis in Africa?

Reuters - Innovations Video Online (Feb. 27, 2015) A dongle that plugs into a Smartphone mimics a lab-based blood test for HIV and syphilis and can detect the diseases in 15 minutes, say researchers. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Doctor Says Head Transplants Possible Within Two Years

Doctor Says Head Transplants Possible Within Two Years

Buzz60 (Feb. 27, 2015) An Italian doctor is saying he could stick someone&apos;s head onto someone else&apos;s body. Patrick Jones (@Patrick_E_Jones) reports. Video provided by Buzz60
Powered by NewsLook.com
How Your Dentist Could Help Screen You For Diabetes

How Your Dentist Could Help Screen You For Diabetes

Newsy (Feb. 27, 2015) A new study from researchers at New York University suggests dentists could soon use blood samples taken from patients&apos; mouths to test for diabetes. Video provided by Newsy
Powered by NewsLook.com
The Best Tips to Makeover Your Health

The Best Tips to Makeover Your Health

Buzz60 (Feb. 27, 2015) If you&apos;re looking to boost your health this season, there are a few quick and easy steps to prompt you for success. Krystin Goodwin (@Krystingoodwin) has the best tips to give your health a makeover this spring! Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins