Navigation Links
USDA scientists helping keep in-demand smoked salmon safe to eat
Date:10/26/2010

This release is available in Spanish.

Scientists with the U.S. Department of Agriculture (USDA) are helping ensure that the smoked salmon that's always a hit at festive gatherings also is always safe to eat, including among their achievements the development of a first-of-its-kind mathematical model that food processors and others can use to select the optimal combination of temperature and concentrations of salt and smoke compounds to reduce or eliminate microbial contamination of the product.

The studies are led by food technologist Andy (Cheng-An) Hwang with the USDA Agricultural Research Service's (ARS) Eastern Regional Research Center in Wyndmoor, Pa. ARS is USDA's principal intramural scientific research agency.

A gourmet favorite, smoked salmon is typically sold in vacuum packages that have a refrigerator shelf life of about three to eight weeks, according to Hwang. Since pathogenic microbes such as Listeria monocytogenes can live at refrigerator temperatures, it is important to get rid of these microorganisms before those packages leave the processing plant.

In ongoing research begun in 2006, Hwang is investigating ways that processors can protect the pleasing flavor and texture of smoked salmon while reducing or eliminating microbial contamination.

In one series of studies, Hwang and co-researchers added salt and smoke compounds to cooked salmon, then inoculated the fish with Listeria monocytogenes. Next, the scientists exposed the salmon to a range of temperatures, from 104 degrees Fahrenheit to 131 degrees F to simulate commercial smokehouse processing.

Regarded as mid-range, these temps are higher than those used for cold-smoking, the most popular commercial salmon-smoking process, but are lower than those of the lesser-used commercial hot-smoking procedure.

The researchers determined that every 9 degree F increase in temperature resulted in a 10-fold increase in rates of inactivation of Listeria. They used this and other data from the study to create the mathematical model.

Hwang, food technologist Shiowshuh Sheen and microbiologist Vijay K. Juneja, also at Wyndmoor, have documented these and related findings in articles published in the Journal of Food Science in 2009. More recently, Hwang reviewed the study results with scientists and executives from the chilled-foods industry who participated in the 2010 Refrigerated Foods Association annual symposium.


'/>"/>

Contact: Marcia Wood
Marcia.Wood@ars.usda.gov
301-504-1662
United States Department of Agriculture -- Research, Education and Economics
Source:Eurekalert

Related biology news :

1. Jefferson scientists deliver toxic genes to effectively kill pancreatic cancer cells
2. Scientists identify novel inhibitor of human microRNA
3. Argonne scientists peer into heart of compound that may detect chemical, biological weapons
4. MU scientists go green with gold, distribute environmentally friendly nanoparticles
5. Scientists identify gene that may contribute to improved rice yield
6. Scientists discover why a mothers high-fat diet contributes to obesity in her children
7. MU scientists see how HIV matures into an infection
8. Earth scientists keep an eye on Texas
9. Thinking it through: Scientists call for policy to guide biofuels industry toward sustainability
10. Scientists identify a molecule that coordinates the movement of cells
11. Scientists Find new migratory patterns for Mediterranean and Western Atlantic bluefin tuna
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/19/2016)... 2016 The new GEZE SecuLogic ... web-based "all-in-one" system solution for all door components. It ... the door interface with integration authorization management system, and ... The minimal dimensions of the access control and the ... installations offer considerable freedom of design with regard to ...
(Date:4/14/2016)... 2016 BioCatch ™, the ... announced the appointment of Eyal Goldwerger as ... Goldwerger,s leadership appointment comes at a time of ... deployment of its platform at several of the world,s ... discerns unique cognitive and physiological factors, is a winner ...
(Date:3/31/2016)... , March 31, 2016  Genomics firm Nabsys has ... CEO, Barrett Bready , M.D., who returned to ... the original technical leadership team, including Chief Technology Officer, ... Product Development, Steve Nurnberg and Vice President of Software ... the company. Dr. Bready served as CEO ...
Breaking Biology News(10 mins):
(Date:5/25/2016)... ... May 25, 2016 , ... Biohaven Pharmaceutical Holding Company ... granted the company’s orphan drug designation request covering BHV-4157 for the treatment of ... the FDA. , Spinocerebellar ataxia is a rare, debilitating neurodegenerative disorder that ...
(Date:5/24/2016)... Israel , May 24, 2016   MedyMatch Technology ... physicians with artificial intelligence, real-time decision support tools in the ... present at the 2016 Israeli Advanced Technology Industries (IATI) BioMed ... Israel,s 15th National Life Sciences and ... at the David Intercontinental Hotel in Tel Aviv, ...
(Date:5/24/2016)... ... 2016 , ... Media Cybernetics, global image analysis leader, announces ... reflects a results-driven revitalization for a company with a renewed focus on innovation ... crisp, refreshed logo and a new web presence. , “I believe that the ...
(Date:5/23/2016)... ... May 23, 2016 , ... PrecisionAg® Media has ... 2017 and Beyond. The paper outlines the key trends that are creating both ... “We’ve witnessed a lot of highs and lows as the precision agriculture market ...
Breaking Biology Technology: