Navigation Links
Use of high hydrostatic pressure to inactivate Hepatitis A virus in oysters studied

NOAA/Virginia Sea Grant has awarded Virginia Tech $119,000 to study whether high hydrostatic pressure will inactivate Hepatitis A virus in both shucked and unshucked oysters.

The project, led by Daniel Holliman, an M.D. with the High Pressure Processing Laboratory, and Laura Douglas, lab manager, will identify one or more effective high pressure processing schedules. The laboratory is a facility of the Department of Food Science and Technology at Virginia Tech, devoted to improving food safety and food processing.

Hepatitis A virus (HAV) is one of the more serious illnesses transmissible by shellfish. Worldwide, HAV is responsible for more than 1.5 million cases of the disease each year, with 260,000 cases and more than 100 deaths in the United States. Hepatitis A infection is characterized by fatigue, malaise, fever, loss of appetite, nausea, vomiting, joint and muscle aches, and abdominal pain, coupled with the onset of jaundice, a yellowing of the whites of the eyes, and dark urine. The disease generally runs its course in two months, but can linger as long as six. While survival rates for Hepatitis A are above 99 percent, the disease can be very dangerous for infants, the elderly, immunosuppressed people, and those with existing liver disease.

Bivalve shellfish, such as oysters, have been demonstrated to concentrate pathogenic organisms from their environment. In some cases, sewage contamination of harvesting areas, either from coastal runoff or ship discharges, has been shown to result in HAV contamination of oysters. Several studies have demonstrated remarkable concentration and persistence of HAV in shellfish exposed to the virus through their surrounding seawater. Even with depuration, HAV may persist in oysters for several weeks after exposure. The virus also is fairly resistant to heating and may remain viable in shellfish after up to five minutes of steaming.

For these reasons, high hydrostatic pressure treatment of raw oyst ers is especially appealing to oyster processors and distributors, as well as public health officials. HPP makes it possible to eradicate or inactivate pathogens while still delivering a 'raw' product to the consumer.

The study will benefit processors and distributors by mitigating their food safety liability, but most importantly, also will help protect consumers from foodborne infectious disease.

Virginia Sea Grant is part of a 30-state National Sea Grant Program established by Congress in 1966 as part of the National Oceanic and Atmospheric Administration. Sea-grant colleges research new ideas and technologies to help use, manage, and understand ocean and coastal resources. Virginia Sea Grant funds marine science research in aquaculture, seafood safety and quality, marine resources, coastal ecosystems through a competitive, peer-reviewed grant proposal process. In addition to its core programs, Virginia Sea Grant coordinates research in oyster disease and toxics in the Chesapeake Bay.


'"/>

Source:Virginia Tech


Related biology news :

1. Gene therapy to lower blood pressure just enough
2. Researchers learn how blood vessel cells cope with their pressure-packed job
3. Genes affecting blood pressure change as children become adults
4. How nice, brown rice: Study shows rice bran lowers blood pressure in rats
5. Blame the brain for high blood pressure
6. Its OK for men with high blood pressure to have a drink or two, new study finds
7. 8 plants from South Africa may hold potential for treating high blood pressure
8. Scientists Replicate Hepatitis C Virus in Laboratory
9. Norovirus, AIDS vaccine and Hepatitis Virus
10. UCLA study assesses cost-effectiveness of Hepatitis B drugs
11. Natural Killers Could Lead to New Hepatitis Treatments
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:12/5/2016)... Dec. 5, 2016  The Office of Justice ... "Can CT Scans Enhance or Replace Medico Legal ... of supporting or replacing forensic autopsies with postmortem ... In response to recommendations made by ... using CT scans as a potential component of ...
(Date:11/30/2016)...  higi SH llc (higi) announced today the ... brands, industry thought-leaders and celebrity influencers looking to ... taking steps to live healthier, more active lives. ... has built the largest self-screening health station network ... who have conducted over 185 million biometric screenings.  ...
(Date:11/28/2016)... 2016 "The biometric system ... The biometric system market is in the growth ... near future. The biometric system market is expected to ... a CAGR of 16.79% between 2016 and 2022. Government ... technology in smartphones, rising use of biometric technology in ...
Breaking Biology News(10 mins):
(Date:12/7/2016)... 7, 2016  Genprex, Inc. a biopharmaceutical company ... treatments, today announced that it has retained ICR ... strategic communications and advisory firm, to develop and ... will combine investor relations, public relations and digital ... profile of Genprex and its lead candidate Oncoprex, ...
(Date:12/7/2016)... DIEGO , December 7, 2016 ... in the International Journal of Molecular Sciences a team of ... 1 ] have demonstrated that expression of NR2F6 ...  These scientists tested for NR2F6 in patient,s cervical cancer tissue ... their tumors. "This is an interesting study and ...
(Date:12/7/2016)... ... December 07, 2016 , ... JULABO USA is ... cart. The new website has been designed to provide the best user-friendly experience ... to access detailed product information, read educational industry content as well as share ...
(Date:12/6/2016)... , Dec. 6, 2016 The American Botanical ... adoption of arnica ( Arnica montana ) through ... ABC,s HerbMedPro database, a comprehensive, interactive ... and clinical research data on the uses and ... Naturopathica, a wellness company with healing ...
Breaking Biology Technology: