List of Newsletters
To subscribe this Food Safety Newsletter,
Journal of Food Safety
Safety and Quality Conference
Wednesday, October 8, 2008
Conference Place: The South San Francisco Conference Center
8:00 - 8:30 Registration and Breakfast (Juice, Tea, Coffee, and Bread)
8:40 - 9:00 Opening Announcement
9:00 - 10:00 Detection of Foodborne Pathogens for Food Safety
Daniel Y.C. Fung -Director of Rapid Methods and Automation
in Microbiology Workshop (KSU)
-Professor, Dept. Animal Science and Industries, Kansas State University
- 11:00 Current Foodborne Outbreak and Iegal Issues
William D. Marler, Esq. -MarlerClark attorneys
11:00 - 11:20 Coffee Break in
Exhibitors' Section (Salon G,H,I,J)
11:20 - 12:20 - Industrial Actions for Food Safety and Quality
Stan Bailey, Microbiologist, bioMerieux (2008 IAFP President)
12:20 - 1:30 Lunch will be supported by conference organization
1:30 - 2:30 Food Safety and Quality Challenges of food products
Erdogan Ceylan - Director of Research. Silliker, Inc.
2:30 - 3:30: - Foodborne Outbreaks and Food Industries' Actions
Jenny Scott - IAFP President (2000-2001) - VP-FPA
3:30 - 3:50: Coffee Break in Exibitors' Section (Salon G,H,I,J)
3:50 - 5:00: Wine and Cheese Reception Visting Exhibitors' Sections
Sponsored by Bio-Rad (Wendy Lauer)
Thursday, October 9, 2008
Conference place: The South San Francisco Conference Center (Salon F-J)
8:00 - 9:00 Registration and Breakfast (Juice, Tea, Coffee, and Bread)
9:00 - 10:00: Special Presentation for Ethnic Food Safety
Daniel Y.C. Fung -Director of Rapid Methods and Automation
in Microbiology Workshop (KSU)
-Professor, Dept. Animal Science and Industries, Kansas State University
10:00 - 11:00:Extending food safety throughout the supply chain
Craig Henry - Senior VP. GMA/FPA
11:00 - 11:20 Coffee Break in Exhibitors' Section (Salon G,H,I,J)
11:20 - 12:20 Pathogenesis of E. coli O157:H7, Salmonella, and Listeria
Dong-Hyun Kang, - Associate Professor, Washington State University
Director of Detection Center, National Alliance Food Safety and Security
12:20 - 1:20 Lunch will be supported by Conference organization.
1:20 - 2:10 - Rapid detection methods for food safety and quality
Ken Davenport - Global Technical Services Product Specialist -3M
2:10 - 3:00 - The Changing Food Safety Landscape: Protecting Our Products
and Consumers in a Global Society
Paul Hall, - IAFP President (2004-2005)
3:00 - 3:45 Major Spoilage bacteria in Fruit and vegetable juices- Alicyclobacillus,
SuSen Chang - Research Associate, Washington State University
3:45 - 4:00 Coffee Break in Exhibitors' Section (Salon G,H,I,J)
4:00 - 5:00 Panel Discussion: Food Industries' Actions for Food Safety
PANELS: ALL KEYNOTE AND KEY SPEAKERS
Dicussion leader : Stan Bailey
5:00 Certificate and Adjourn
here to see conference program
for tighter scrutiny of infant formula markets
Source of Article: http://www.dairyreporter.com
Infant formula manufacturers need to invest further in safety controls
in order to regain public confidence after the Chinese melamine scandal,
FAO has said.
The melamine scandal has rocked consumer confidence in infant formula,
and ¡°restoring consumer confidence is critical,¡± said Ezzeddine Boutrif,
director of the FAO nutrition and consumer protection division.
"Melamine-contaminated products should be removed from the food chain
in order to prevent further exposure. The safe supply of dairy products
needs to be restored immediately,¡± said Boutrif.
Food makers have speared opportunities in the market for milk formulas
that meet the dietary needs of infants and counter-balance deficiency
needs. The European infant formula market alone is estimated to be worth
But infant formula and baby milk have been in the spotlight for all the
wrong reasons this week after it emerged that milk powder for infants
was found to have been contaminated with melamine in China.
The compound alone is of low toxicity, but studies with animals have suggested
that combination of melamine with cyanuric acid, a potential impurity
of melamine, may lead to the kidney problems observed in China.
The level of melamine found in the contaminated infant formula has been
as high as 2,560 milligrams per kilogram ready to eat product, while the
level of cyanuric acid is unknown, according to figures provided by World
Health Organization (WHO) and the UN Food and Agriculture Organization
Although investigations are still underway, it is thought that melamine
was added at milk collection depots to mask the fact that it had been
watered down by giving the appearance of a good protein content. (Both
melamine and protein have a high nitrogen content, and nitrogen is usually
measured to establish protein levels).
WHO and the FAO called on all countries to be alert to the possible spread
of melamine contaminated dairy products.
And the responsibility extends to the food and nutrition industries, said
¡°It is critical that the industry strongly invests in food safety and
adopts a food safety culture covering the food chain from raw materials
through to the final product,¡± said Boutrif.
Jorgen Schlundt, director of the WHO food safety department, added: "While
breastfeeding is the ideal way of providing infants with the nutrients
they need for healthy growth and development - it is also critical to
ensure that there is an adequate supply of safe powdered infant formula
to meet the needs of infants who are not breastfed.¡±
The UK¡¯s Food Standards Agency (FSA) confirmed that no baby milk manufactured
in China can be sold legally in the UK. The agency also took steps to
assure parents and caregivers that no milk or milk products imported from
China can be used by manufacturers of baby milks sold in the UK.
Similar moves across the pond
Earlier this week the US Food and Drug Administration (FDA) issued a public
warning that infant formula manufactured in China may not be safe because
of concerns over melamine contamination.
The administration advised that caregivers should refrain from using Chinese-made
formula and replace it with ¡°an appropriate infant formula manufactured
in the United States¡±.
have become the latest victims of China¡¯s toxic melamine milk powder health
of Article: http://www.marlerblog.com/
Posted on September 25, 2008 by Food Poisoning Lawyer
Sanlu, now you have done it. Two gorillas, both from Hangzhou Wildlife
World in eastern Zhejiang province and aged one and three, had been diagnosed
with crystallization in their urine, according Chinese media. The news
came with the revelation that Chinese officials, suppressing "bad
news" during the Olympic games, had ordered a cover-up of the scandal.
Sanlu Group, the company at the heart of the scandal, met with the government
three times to explain the crisis, according to reports - but despite
the warnings no recall notice was issued. The two ill gorillas have joined
more than 54,000 babies poisoned throughout the scandal so far. Four have
died. Both gorillas had been fed with milk powder made by Sanlu. The company
has said the infants became sick after drinking milk contaminated by melamine,
a compound used in making plastics and added to cheat nutrition tests.
Countries Ban Chinese Products Amid Milk Scandal
(Wall Street Journal)
By LORETTA CHAO in Beijing and SIMON LOUISSON in Wellington, NEW ZEALAND
China's recent troubles with contaminated milk are prompting more skepticism
in other countries about its quality control, despite authorities' efforts
to contain the crisis.
A Chinese dairy factory worker monitors the production at a plant in Wuhan,
Countries stepped up testing of foods imported from China after Chinese
authorities disclosed that the industrial chemical melamine had tainted
products -- including liquid milk, yogurt and candy -- made by 22 companies.
Baby formula contaminated by melamine has killed at least three babies
and sickened more than 50,000. Taiwan and Indonesia have now joined the
list of at least 12 regions that have banned Chinese-made dairy products.
New Zealand's Food Safety Authority warned the public on Wednesday that
"unacceptable" amounts of melamine were found in a popular Chinese
candy called "White Rabbit Creamy Candies." British supermarket
chain Tesco PLC said it recalled the candy as a precautionary measure
from its stores in the U.K., China and Malaysia.
U.S. and European consumer-safety officials said the crisis highlights
the need for better enforcement of public-safety standards at all stages
of manufacturing. "You have to know what's coming into your factory
and what's going out of your factory," said Nancy Nord, acting head
of the U.S. Consumer Product Safety Commission.
Ms. Nord and other U.S. and European officials were in China promoting
compliance with product-safety regulations that were tightened following
a spate of scandals last year over unsafe or shoddy products, including
toys, tires, drugs and pet food.
The milk scandal also has proved damaging to New Zealand dairy giant Fonterra
Co-operative Group, which in 2005 bought 43% of Shijiazhuang Sanlu Group
Co., the first Chinese dairy company to be implicated. Sanlu's products
were laced with the highest concentrations of melamine found to date,
and authorities say the company was responsible for a coverup lasting
for at least months that caused even more children to get sick.
Fonterra said Wednesday the scandal had affected its financials. It booked
a 139 million New Zealand dollar (US$95 million) impairment charge against
the carrying value of its investment in Sanlu. That left a residual value
of NZ$62 million in Sanlu, mainly its physical plant. Still, Fonterra
said it remained committed to China.
A Philippine official inspects milk at a store in Manila. Chinese food
products in several countries are being removed from shelves over contamination
In an effort to assure the world its products are safe, Chinese regulators
said this week that the tainted-milk scandal has been brought under control
and milk samples tested since Sept. 15 showed no traces of melamine. 9-25-08
for Melamine, Enterobacter sakazakii Bacteria Discovered in Sanlu Powdered
Source of Article: http://www.marlerblog.com/
Posted on September 24, 2008 by Food Poisoning Lawyer
As if Sanlu does not have enough to worry about - A pathogenic bacterium
has been found in milk powder that was also contaminated with melamine,
according to a report in the Lanzhou Daily. The report said that the Administration
of Quality and Technology Supervision in Gansu Province issued an emergency
notice on September 21, saying that Sanlu¡¯s older and younger infant formulas
contained enterobacter sakazakii as well as the toxic melamine. Enterobacter
sakazakii (E. sakazakii) is a gram-negative, non-spore-forming bacterium
belonging to the Enterobacteriaceae family. It has previously been found
in powdered infant formula around the world. A 2007 World Health Organisation
report, Microbiological Risk Assessment Series, No. 6, concluded "Intrinsic
contamination of powdered formula with E. sakazakii can cause infection
and illness in infants, including severe disease ... and death."
Enterobacter sakazakii is an uncommon, but often fatal, invasive pathogen
that causes bloodstream and central nervous system infections. The gram-negative,
non-spore-forming, rod-shaped bacterium is from the family Enterobacteriaceae
? the same family that E. coli O157:H7 belongs to.
While E. sakazakii has caused disease in all age groups, it is likely
that immunocompromised or medically debilitated infants are more susceptible
to infections with E. sakazakii. One contributing factor in infant cases
could be that the stomach of newborns, especially of premature babies,
is less acidic than that of adults. Several outbreaks traced to contaminated
infant formula have occurred in neonatal intensive care units worldwide.
At Food Safety GAO Report Says
Posted by Jane Akre
Friday, September 26, 2008 11:24 AM EST
Source of Article: http://www.injuryboard.com
The inner workings and failings of the Food and Drug Administration are
being revealed in a draft report, obtained by the AP, by the Government
The report reveals a regulatory agency with a hands-off approach to its
Only one percent of fresh produce imported to the U.S. is inspected. Combined
produce from several sources, makes tracing any food contamination nearly
impossible. Inspections are rare and when problems are uncovered, the
FDA relies on the industry to do its own cleanup without oversight or
Sens. Barbara Boxer and Ted Kennedy called for the investigation after
the 2006 E. coli contaminated spinach killed three and sickened 200 others.
The industry took an $86 million hit.
¡°This report paints a frightening picture of the FDA's fresh produce safety
efforts," Boxer said to the AP. It "should serve as a wakeup
call to do more to protect the nation's food supply."
Over the last five years the agency found that 40 percent of the nation¡¯s
more than 2,000 food plants had safety problems. Half of those were inspected
only once. The agency seized no fresh produce and failed to prosecute
Part of the problem is funding, the GAO concludes. As the U.S. imports
more fresh produce, the number of inspections has not. The FDA regulates
$417 billion worth of domestic food and $49 billion worth of imported
food each year.
Meat, poultry, and some egg products are regulated by the US Department
Between 2003 and 2006, FDA food safety inspections dropped nearly in half,
according to a database analysis by the Associated Press. After Sept.
11, a fear of the vulnerability of our food system, saw a slight spike
in inspections which have since fallen off.
Inflation-only budget adjustments mean workers didn¡¯t receive cost-of-living
increases, and the gaps left by retiring personnel, scientists, inspectors
and staff, have gone unfilled. As a result, food safety guidelines have
not been updated.
The GAO believes $3.5 billion would be needed to do adequate inspections
ofthe 250,000 domestic and foreign food facilities. #
sought for tomato growers devastated by salmonella scare
Source of Article: http://www.mcclatchydc.com/257/story/52898.html
By Halimah Abdullah | McClatchy Newspapers
WASHINGTON -- In 25 years of growing tomatoes, Greg Murray's Bainbridge
farm weathered floods, hailstorms, freezes, droughts, poor yields, poor
markets, diseases and insect infestations.
However, Murray's toughest challenge came this summer not from nature
but from a federal agency-driven and media-hyped public hysteria over
Murray termed summer's recall the "false food safety awareness fiasco"
during last week's congressional hearing on the impact of the salmonella
outbreak on tomato farmers.
"The one thing we have never had to face was a public hysteria attack
caused by the media and agencies of the federal government," Murray
testified. "No amount of planning could have prepared us for what
we faced this June as we started harvesting our spring crop of tomatoes."
On June 7, the Food and Drug Administration alerted consumers that red
plum, red Roma and round red tomatoes may have caused a salmonella Saintpaul
strain outbreak that sickened 1,300 U.S. residents and led to 252 hospitalizations
and two deaths.
The agency lifted its warning July 17, and investigators subsequently
have traced the salmonella to jalapeno and serrano peppers grown on two
According to a study by the University of Georgia, the scare led to a
$25.7 million loss to the state's economy. Lawmakers, including Rep. Sanford
Bishop, D-Ga., have joined farmers in criticizing how the FDA handled
Last week, Bishop asked House leadership to consider providing $100 million
to cover crop losses resulting from what many believe was the FDA's mishandling
of the salmonella outbreak. This summer, eight Florida lawmakers introduced
a different bill asking Congress to authorize $100 million in compensation
for growers and others who lost business as a result of the FDA's consumer
"We cannot have another summer like the past one," Bishop said.
"As long as this country produces a domestic supply of food and fiber,
we will have incidences of contamination every now and then. But we cannot
and must not allow those relatively rare situations to affect entire unrelated
industries ever again."
A boost from the vets
Vets for Freedom, a veterans group that supports the Iraq war, took to
the Hill on Wednesday to express its support for a soon-to-be-announced
House resolution stating that the surge in Iraq was successful and attributing
that success to military strategy and the troops. The measure is backed
by Rep. Jim Marshall, D-Macon, who netted the group's endorsement earlier
this summer and who is in a tight race against retired Air Force Maj.
Gen. Rick Goddard.
"We are ... honored to stand with Rep. Jim Marshall, who has set
an example for every veteran seeking higher office," Vets for Freedom
chairman Pete Hegseth said Wednesday. "He has put victory before
his party affiliation, demonstrating what true statesmanship looks like."
Gas gang or bust?
The English poet William Butler Yeats once wrote: "Things fall apart,
the center cannot hold." The line aptly applies to the beleaguered
congressional "Gas Gang's" bipartisan efforts to craft energy
Republican members of the group, which is headed, in part, by Sen. Saxby
Chambliss and includes Sen. Johnny Isakson, has faced criticism from some
fellow party members, conservative groups and talk show hosts for ceding
a potential political sledgehammer to the Democrats. Within its ranks,
the gang has hotly debated increasing drilling provisions and the proposal's
cost --currently $84 billion, which is offset by doing away with tax breaks
for the oil and gas industry.
The Oct. 1 expiration of a moratorium on new offshore drilling adds to
the tension. Some in Congress want to let the ban lapse, others want it
Debate on drilling and the myriad energy proposals floating around the
Hill will likely dominate Congress' final week before adjourning for recess.
Trace Food Poisoning Bug Back to Chickens and Livestock
[September 26, 2008]
By Andrea Anderson a GenomeWeb staff reporter
Source of Article: http://www.genomeweb.com/issues/news/149643-1.html
NEW YORK (GenomeWeb News) ? Almost all campylobacteriosis food poisoning
cases in a UK community were caused by Campylobacter jejuni bacteria originating
in farm animals ? particularly chickens and cattle, new research suggests.
In a paper appearing online today in PLoS Genetics, UK researchers analyzed
bacterial samples from roughly 1,200 human campylobacteriosis cases, comparing
them to the C. jejuni found in livestock, wild animals, and the environment.
Their analysis suggests that nearly 97 percent of the C. jejuni populations
in infected humans originated in chickens and livestock. In contrast,
populations in wild animals and other environmental sources seem to have
a minor role in human campylobacteriosis.
¡°The idea was that we wanted to know where this thing comes from,¡± lead
author Daniel Wilson, a post-doctoral researcher at the University of
Chicago who completed the work as a research associate in genetics at
Lancaster University, told GenomeWeb Daily News.
Although most people may think of Escherichia coli and other bugs as food
poisoning culprits, Wilson said, C. jejuni is actually the leading cause
of bacterial gastroenteritis in developed countries. In the US, for example,
C. jejuni afflicts two to three million people a year. In severe cases,
such infections can lead to a neurological disease called Guillain-Barre
syndrome or reactive arthritis.
There have been a number of different hypotheses about where disease-causing
C. jejuni come from. Because the bug causes gastroenteritis, it¡¯s easy
to blame food sources. But that¡¯s not necessarily the case, Wilson said,
noting that some aspects of Campylobacter¡¯s epidemiology are consistent
with waterborne infections.
In an effort to determine where human-infecting C. jejuni were coming
from, Wilson and his colleagues compared the genetic sequences found in
human campylobacteriosis cases with those from potential source sites.
They obtained 1,231 C. jejuni isolates from human samples taken in Lancashire,
UK, over two years and sequenced seven housekeeping genes in the C. jejuni
found in these samples. They then compared these with C. jejuni isolated
from livestock (chicken, cattle, sheep, and pigs), wild animals (birds
and rabbits), and environmental sources (water and sand).
Because Campylobacter is very diverse and there¡¯s overlap between some
C. jejuni populations, Wilson said, they couldn¡¯t use the presence or
absence of specific alleles to distinguish bacterial populations. Instead,
the researchers compared the frequency of these alleles in different populations.
Using this ¡°evolutionary approach,¡± they traced the 256 different C. jejuni
genotypes back to their likely sources. Their results suggest that 96.6
percent of human campylobacteriosis cases are caused by C. jejuni populations
carried by chickens, cattle, sheep, and pigs.
Bacterial populations associated with chickens caused more than half of
all cases tested. Although it was more difficult to distinguish C. jejuni
found in cattle from those found in sheep, the results suggest that cattle
populations caused just over a third of cases, while sheep populations
caused around four percent. Meanwhile, the researchers detected Campylobacter
from pigs in less than one percent of campylobacteriosis cases.
In contrast, populations carried by wild animals appear to be responsible
for just 2.3 percent of cases, while other environmental isolates were
linked to 1.1 percent of cases.
These results differ from research published in 2005 suggesting livestock
played a minor role in campylobacteriosis ? a discrepancy that may be
explained by differences in samples sizes or in analytical approaches,
Wilson said. ¡°Of course, there could be regional differences,¡± he added.
To address this possibility, his colleagues are currently collecting samples
in Scotland and New Zealand. They are also in discussions with the US
Centers for Disease Control and Prevention in Atlanta, Wilson said, though
it¡¯s unclear whether the agency will ultimately participate in the studies.
The work also provides clues about the bug¡¯s transmission route, though
that is usually more difficult to discern than source information. While
it is unlikely that the environment is the main transmission route in
the community tested, it is unclear whether C. jejuni is transmitted to
humans through infected food or via another route.
For instance, because Lancashire contains a mixture of rural and urban
areas, it¡¯s possible that humans were exposed to C. jejuni from livestock
without eating or handling tainted meat. Wilson noted that the team is
currently looking at the disease epidemiology in more detail to understand
the effect that of urban-rural factors, if any.
If it turns out, as the researchers suspect, that food is the transmission
route from livestock to humans, there are three stages at which you could
prevent Campylobacter infections, Wilson explained ? first at the source,
by reducing the incidence of C. jejuni in farm animals. It may also be
possible to reduce C. jejuni in meat during food processing stages as
well as during food preparation. By educating the public about good food
hygiene, Wilson said, it may be possible to curb Campylobacter infections.
Cattle Language Defeated
Friday, September 26, 2008
Source of Article: http://www.meatami.com/ht/display/ArticleDetails/i/42418
(American Meat Institute)
The Senate today rejected a motion to proceed to the Economic Stimulus
package (S. 3604), which includes language that would ban non-ambulatory
disabled cattle from entering the food supply. The measure was rejected
by a vote of 52 to 42. The language also included additional civil money
penalties that go beyond those already established through the Federal
Meat Inspection Act. Sixty votes were required for the Senate to proceed
to debate and consideration of the bill.
On August 27, USDA issued a proposed rule banning non-ambulatory cattle
from the food supply. Since early 2004, non-ambulatory cattle that arrive
at packing plants have been prohibited from the meat supply. However,
USDA has permitted animals that arrive ambulatory, pass veterinary inspection
and become non-ambulatory because of acute injury to undergo a second
inspection. On a case by case basis, some healthy, but non-ambulatory
cattle have entered the meat supply with federal veterinary approval.
On April 22, AMI, together with the National Meat Association and the
National Milk Producers Federation, petitioned USDA and asked the department
to end the option to have a second inspection. To see a copy of the industry
petition, go to: http://www.meatami.com/ht/a/GetDocumentAction/i/11881
case of E-coli found at daycare
posted by: Matt Clough 2 hrs ago
Source of Article: http://www.9news.com/news/article.aspx?storyid=100547&catid=188
Tri-County Health says they found the disease in a 1-year-old girl. She
was not taken to the hospital and is expected to recover at home.
A 3-year-old boy who also attended the daycare died last week from E-coli.
The source of the E-coli has not been determined.
Health officials say other children have complained of mile gastrointestinal
illness, but have gotten better. Investigators are using stool swabs to
test the children for any signs of the disease. Those children will be
able to attend another daycare once they¡¯ve had two negative tests. They
are also testing the daycare operators.
Arapahoe County has ordered the daycare to close, saying it had more children
than the law allowed.
participants' E. coli count reaches 21 illnesses
By Staff Reports
Article Launched: 09/23/2008 12:00:00 AM PDT
Source of Article: http://www.chicoer.com/news/ci_10534399
FOREST RANCH The Butte County Public Health Department announced Monday
it has identified three more cases of E. coli illness, bringing the total
to 21 in a recent outbreak.
Four people were hospitalized because of the sickness, including a young
The illnesses have been linked to a fundraiser held in Forest Ranch on
Sept. 6 to benefit the volunteer fire department there. Several hundred
people attended the event.
Health officials say they believe tri-tip served at the event was contaminated
with E. coli bacteria. They are now trying to determine how the meat became
tainted, they said.
Besides examining the meat, officials will test foods that were served
with it, in case those foods may have contaminated the meat, said Dr.
Mark Lundberg, Butte County's health officer.
Most cases of the illness were mild, but some people became very sick
with severe diarrhea. The illnesses were caused by a dangerous strain
of bacteria known as E. coli 0157. It can cause kidney failure and in
some cases, death.
Reported by: Tammy Mutasa
Wednesday, Sep 24, 2008 @07:34pm CST
Source of Article: http://myhighplains.com/content/fulltext/?cid=24211
AMARILLO---The number has gone up again, now it's 26 cases of salmonella
that the City Health Department is investigating in Amarillo.
20 of those are linked to meals at the IHOP on Western.
The restaurant voluntarily shut down last week.
IHOP will be closed until the Health Department does it's inspection.
The city says the investigation is already underway.
Right now they are testing the restaurant, interviewing IHOP employees
and sick people.
The health department is also taking lab samples of the restaurant, but
those results won't be back until next week.
"It is a mystery and we're not sure what the cause of it is; we're
determined to find out why this is happening again, and the restaurant
will stay closed until we're comfortable with that answer, the important
thing is that the restaurant is safe to the public," said Vicky Covey
from the City of Amarillo.
This is the third time in about three months that this restaurant has
closed it's doors because of salmonella.
System Certification for Detecting Listeria is Extended
WEBWIRE Friday, September 26, 2008
Source of Article: http://www.webwire.com/ViewPressRel.asp?aId=76046
The Association of Analytical Communities Research Institute (AOAC-RI)
has extended certification of the BAX¢ç system from DuPont Qualicon as
a Performance TestedSM Method for detecting Listeria -- a bacterial genus
-- in food products.
Now food companies and service labs can use non-proprietary media with
the BAX¢ç system for reliable Listeria detection in both food and environmental
¡°Being able to use this assay to test food samples is an important advancement
for our customers,¡± said Kevin Huttman, president -- DuPont Qualicon.
¡°Furthermore, having flexible enrichment options will allow food companies
to adopt a testing procedure that most conveniently fits their schedule.¡±
coli growth may be inhibited by tomato-based edible film
By Jane Byrne18-Sep-2008
Source of Article: http://www.foodnavigator-usa.com
Edible tomato-based, antimicrobial films could prevent bacterial contamination
of food, while promoting health as a result of the nutritional and health
benefits linked to the consumption of tomatoes, says US study.
The results of new research, published in the Journal of Food Science,
show that carvacrol-containing tomato-based edible films inactivated the
virulent pathogen E. coli O157:H7 and the inactivation was related to
the carvacrol levels in films.
Researchers from the Agriculture Research Service (ARS) of the US Department
of Agriculture (USDA) and the Western Regional Research Centre, Processed
Foods said that antimicrobial assays of tomato films indicated that optimum
antimicrobial effects occurred with carvacrol levels of approximately
0.75 per cent added to tomato purees before film preparation.
They said that the aim of the study was to evaluate the antimicrobial
activities, storage stabilities and the physical?chemical?mechanical properties
of edible films made from tomatoes containing carvacrol, the main constituent
of oregano oil.
The authors claim that edible films containing plant antimicrobials are
gaining in importance as potential treatments for extending product shelf
life and reducing the risk of pathogen growth on contaminated food surfaces.
They said that edible tomato films containing antimicrobials may have
multiple benefits: ¡°Consumption of tomatoes, tomato products and isolated
bioactive tomato ingredients is reported to be associated with lowered
risk of cancer, heart disease, diabetes and hypertension.¡±
The antimicrobial activities against E. coli O157:H7 and the stability
of carvacrol were evaluated during the preparation and storage of tomato-based
films made by two different casting methods, continuous casting and batch
casting, according to the authors.
Hot break tomato puree was the primary ingredient in all tomato based
film forming solutions, said the authors.
They said that high methoxyl pectin 1400 was added to increase film strength
and carvacrol was incorporated into tomato puree solutions before the
film casting stage at concentrations of 0, 0.5, 0.75, 1.0 and 1.5 per
¡®E. coli O157:H7 grew normally on agar plates with films lacking carvacrol
incubated at 35¡ÆC for 24 or 48 hours. By contrast, no growth was observed
on the plates around the film discs containing 0.75 per cent or 1 per
¡°The extent of bacterial growth inhibition increased as the per cent of
carvacrol in the films was increased,¡± claims the team.
The results also showed that films prepared by continuous casting are
preferable for large scale use than those prepared by batch casting.
The researchers said that further studies are currently underway to test
the effectiveness of other fruit and vegetable films against contaminated
could gain from meat freshness indicator
By Jane Byrne 25-Sep-2008
Source of Article: http://www.foodproductiondaily.com/
A sensor that changes colour to indicate meat spoilage could prevent serious
illness and food waste, say the US scientists involved in the project.
Battelle scientists John R. Shaw and Donald Zehnder have been involved
in a project for the past two years aimed at developing a ¡®trap and detect¡¯
tool for embedding in meat packaging to warn retailers and consumers of
the presence of bacteria that cause food spoilage. ¡°We really wanted to
come up with an idea whereby the consumer could look at the package and
instantly know that the meat product was fresh or spoiled,¡± said John
Shaw. Zehnder told FoodProductionDaily.com that, following preliminary
lab work, the team is at the stage of designing a prototype sensor and
they have recently filed for a patent in relation to their chemical detector.
According to the two chemists, the project was prompted by what they felt
was a lack of safeguards in the food supply chain following the spinach
linked E. coli outbreak that killed three people and sickened more than
200 in September 2006.
They said their sensor could help reduce the risk of human illness or
Shaw said that their sensor, using technology based on colour metrics,
changes from yellow to dark red when bacteria such as achromobacter and
micrococcus have contaminated the meat.
He explained that the sensor is a synthetic molecule that binds with the
material that the spoilage bacteria emit when they feed on the meat, and
when the molecule and material bind the light they produce changes the
colour of the sensor.
¡°The project is initially concentrating on the detection of spoilage bacteria
as we have a good understanding of how they operate. However, we plan
to fine tune the sensor so that it can also indicate the presence of pathogens
such as listeria and E. coli 0157:H7,¡± said Shaw.
He said that the team is also evaluating how the sensor might be used
in the detection of allergens in food products.
The chemists said that tests have demonstrated that the detector is 200
to 400 times more sensitive that the human nose and can help in reducing
¡°As a result of its reliability for detecting spoilage bacteria, the sensor
could eliminate the need for best before dates. Currently best before
dates are set by manufacturers and are based on worst case assumptions.
Most food is perfectly fine to eat days after its displayed best before
date,¡± claims Shaw. The two chemists would not be drawn on the composition
of the detector, citing confidentiality, but did reveal that it was a
non-toxic, non-caustic organic compound.
They said the sensor would not be undergoing the Food and Drug Administration
(FDA) approval process for some time, but that they were hopeful the detector
would be commercially available within a two-year timeframe. ¡°We have
had a lot of interest already from meat producers and packaging suppliers
in terms of setting up a partnership to get the sensor market ready,¡±
Technology to Detect Foodborne Illnesses
Source of Article: http://www.insideindianabusiness.com/newsitem.asp?ID=31694
Purdue Research Park-based Intelliphage has developed a method to capture
and detect foodborne illness-causing bacteria such as E. coli. The company's
technology promises to be quicker and less expensive than current options.
Intelliphage's method can identify the bacterium's presence in food by
turning it red or making it luminescent, allowing companies to detect
potentially contaminated food before it reaches the consumer. The company
is working on detecting and trapping salmonella, listeria, staph and Mycobacterium
tuberculosis into its technology.
WEST LAFAYETTE, Ind. - A Purdue Research Park-based company has developed
a method to capture and detect foodborne illness-causing bacteria such
as E. coli that promises to be quicker and less expensive than current
conventional technology on the market.The company's technology is based
on discoveries by a research group led by Associate Professor Bruce M.
Applegate in Purdue University's Department of Food Sciences.Intelliphage,
founded in 2008 by Applegate and Lynda Perry, a research associate in
his group, has modified a virus that can infect a specific E. coli bacterium.
This strain causes illness in people and is associated with eating contaminated
beef or vegetables and drinking unpasteurized milk or contaminated water.
According to the Centers of Disease Control and Prevention, there may
be 70,000 infections related to this E. coli in the United States each
year. The number is an estimate, however, because many infected people
do not seek medical care.
Applegate's virus will identify the bacterium's presence in food by turning
it red or making it luminescent, allowing food companies to detect potentially
contaminated food before it reaches the consumer.
Applegate's virus, which is grown in a non-pathogenic lab strain of E.
coli, attaches itself to bacteria it detects.
"Other companies say they can identify a bacterium within an hour,
but it takes more than 24 hours to grow the bacterium before they can
identify it," Applegate said. "That is because they need to
grow 100 million cells of a bacterium before they are able to detect them.
"With Intelliphage Inc., we can locate one bacterium cell in just
25 grams of food, and that means we can detect the bacterium earlier."
Most food companies have luminometers for performing other tests, so they
already have the equipment available to detect the luminescent bacteria,
according to Applegate.
"The companies will not have to invest in new equipment to use our
technology," he said. "Another advantage is that our technology
allows the recovery of the bacteria. This is essential for food companies
when they do food recalls to track the contaminant to its source."
Applegate is working to include salmonella, listeria, staph and Mycobacterium
tuberculosis in the suite of bacteria that his technology can detect and
*About Purdue Research Park*
The 725-acre Purdue Research Park (http://www.purdueresearchpark.com )
has the largest university-affiliated business incubation complex in the
country. The park is home to more than 140 companies. About 90 of these
firms are technology-related, and another 39 are incubator businesses.
The park was ranked No. 1 in 2004 for university-affiliated research parks
and received the 2005 Outstanding Commercialization Award, both from the
Association of University Research Parks. The park's companies also have
received numerous recognitions, including a 2006 MIRA Award:
Innovation of the Year for Purdue Research Park/Quadraspec Inc. and a
2005 CoreNet Global Innovators Award finalist.
The Purdue Research
Park is part of the Purdue Research Foundation, a private, nonprofit foundation
created to assist Purdue University in the area of economic development.
In addition to the Purdue Research Park in West Lafayette, the foundation
has established or is currently constructing technology parks in other
locations around Indiana including Merrillville, New Albany and Indianapolis.
Source: Purdue Research Park
List of Newsletters
To subscribe this Food Safety Newsletter
(C). All rights reserved FoodHACCP.com.