U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 close



Research
                Research Home
                            National Programs
                            Research Projects
                            Scientific Manuscripts
                            International Engagement
                            Scientific Software/Models
                            Databases and Datasets
                            Office of Scientific Quality Review
            Media
                News & Features
                            Multimedia
                            Briefing Room
                            Down on the Farm
                            Press Room
                            Science in Your Shopping Cart
                            Scientific Discoveries
                            Tellus
                            Under the Microscope
            About ARS
                About ARS Home
                            Staff Directory
                            Labs and Research Centers (Map)
                            Headquarter Offices
                            Organizational Chart
                            Employee Services (REE Employees Only)
                            Office of Outreach, Diversity, and Equal Opportunity
            Work With Us
                Work With Us Home
                            ARS Vacancies at USAJOBS
                            Careers at ARS Information
                            Scientific Collaborations
                            Extramural Agreements
                            1890 Faculty Research Sabbatical ProgramSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Office of Communications FNRB 2021





- Search News & Events
- News Archive
- E-mail News Lists
- Magazine
- Image Gallery
- Videos
- Podcasts
- Blog
- Shareables Toolkit
- Press Room
- Briefing Room
- News Home

Table place setting with apple. Title: Food and Nutrition Research Briefs. Link to FNRB home page July 2021 FNRB Index | Search | CommentsContentsGood Bacteria Could Contribute in the Fight Against Pathogens in the Food Processing Environment
Pickling Cucumbers Fused with Health Promoting CompoundNumerous Health Benefits Found in Summer-Favorite Watermelon
Richard Mattes Presents 2020-21 ARS W.O. Atwater Memorial Lecture**ARS Announces Winners of Innovative Challenge to Preserve Flavor of Catfish**  Good Bacteria Could Contribute in the Fight Against Pathogens in the Food Processing Environment
After exposure to unfavorable environmental conditions such as routine sanitation procedures, pathogens such as *Escherichia coli* O157:H7 and *Salmonella enterica* can enter a dormant stage, forming a thin, bacterial biofilm that allows for better survival on hard surfaces such as concrete or steel., When Agricultural Research Service (ARS) scientists and their colleagues compared samples from processing plants that follow similar cleaning procedures but have different levels of pathogens, they found multiple species of bacteria in each location that could either enhance or reduce a pathogen’s chance of surviving the sanitizing procedures. Unique communities of bacteria at each location either collaborate or compete with the pathogens by forming a biofilm community or mixed biofilm structure. Collaboration may lead to high pathogen prevalence at those locations, but strong competition may inhibit pathogen survival at other places. Since many of these environmental bacteria are not harmful to humans or animals, if the specific species that inhibit pathogen biofilm formation can be identified, they could be used as probiotics (preventive measures) against disease-causing bacteria. Another possible economical, effective control that was studied was the use of multi-component sanitizers, a novel multifaceted approach using combinations of various sanitizing reagents and treatments that could inactivate biofilms formed by *E. coli* O157:H7 and *S. enterica*, reducing the chances of the pathogens surviving cleaning practices at beef processing facilities.
Details
Salmonella biofilm on stainless steel surface*Salmonella* biofilm on stainless steel surface. *Photo courtesy of You Zhou (UNL) and Rong Wang (ARS).* Back to Contents  Numerous Health Benefits Found in Summer-Favorite Watermelon
ARS researchers developed a pioneering concept using big data and computational biology to identify and catalog all of the phytochemicals that exist in watermelon—more than 1,500 diverse phytochemicals. They concluded eating watermelon is an excellent way to increase intake of antioxidants, non-protein amino acids and lycopene. They specifically found the antioxidants in watermelon can help the body fight free radicals and slow down cell damage. The fruit's non-protein amino acids can also help repair body tissue, break down food from other meals, and even regulate blood pressure. The fruit also has more lycopene than a raw tomato, which is linked to healthy eyes, overall heart health and protection against certain cancers. Other nutrients, like carotenoids, flavonoids, carbohydrates and alkaloids, also are found in the flesh, seed and rind. Identifying the metabolic pathways and genome sequence of genes involved in the production of beneficial phytochemicals could be highly useful for plant scientists and breeders aiming to improve nutrient content in fruits and vegetables.
Details
Watermelon. Back to Contents  ARS Announces Winners of Innovative Challenge to Preserve Flavor of Catfish
ARS and HeroX have announced the grand prize winners of a competition that invited the public to submit innovative solutions to preserve the flavor of catfish and prevent blue-green algae. Aquaculture researchers have shown exposure to certain varieties of blue-green pond algae, also known as cyanobacteria, can cause a delay in harvest for roughly 50 percent of catfish ponds each year. Cyanobacteria can cause taste and odor problems in the fresh-water fish. The taste and odor must be removed prior to processing Annually, this can cost catfish farmers $15 to $20 million in lost revenue and expenses to maintain the fish and its natural flavor. The competition, known as the 'Preserving the Natural Flavor of Catfish Challenge,' launched in August 2020 and called on a global community of solvers to submit strategies to prevent "earthy" or "muddy" taste in catfish. Judges evaluated submissions for the best overall approach for pre-harvest management practices, pre-harvest treatment technologies and post-harvest treatment technologies.
First place winner: *Preventing Winter Off-Flavor with Solar Heating*
Second place winners: *Microbubbles Circulating with Submersible Vibrator, Nanobubbles Inhibit Cyanobacteria Growth*and*System Approach to Reduce Off-Flavors*
Third place winners: *Bacillus to Prevent Blue-Green Algae (BGA) Growth*and*Filtration of Water through Sawdust-Filled Column*Details
Market-size catfish ready for harvest. Back to Contents  Pickling Cucumbers Fused with Health Promoting Compound
A stable, naturally occurring, health-promoting compound called γ-aminobutyric acid (GABA), was recently found to be generated through the fermentation of brined cucumbers by ARS and North Carolina State University (NCSU) researchers. Low-salt fermentation enhances the GABA content in pickled cucumber products prepared for direct consumption. Also, fermenting the cucumbers in lower salt brines and storing them in their original fermented juices increases the GABA levels. Previous studies have demonstrated consumption of GABA from foods or supplements has positive health benefits like reducing blood pressure, improving decision making, reducing anxiety, and boosting immunity. Other well-known foods where GABA content has been enhanced through fermentation are sourdough bread, soy sauce and dairy products like yogurt, kefir and certain cheeses.
Details
Jars of pickles. Back to Contents  Richard Mattes Presents 2020-21 ARS W.O. Atwater Memorial Lecture
"Predictive Strength of Atwater Values at the Biology: Behavior Interface" was the title of Richard D. Mattes' 2020-21 ARS W.O. Atwater Memorial Lecture, which he presented June 8 at Nutrition Live Online 2021, the annual meeting of the American Society for Nutrition. His Lecture highlighted the interactive relationships between selected determinants of ingestive behavior and energy balance and challenged assumptions that may be impeding a fuller understanding of the energetics of feeding. Mattes has been described as one of America's leading nutrition scientists. He was one of the 20 nationally recognized health and nutrition experts to serve on the 2020 Dietary Guidelines Advisory Committee. His research has focused on hunger and satiety, food preferences, regulation of food intake in people and the chemistry of taste and smell as they interact with hunger and satiety.
Details
Richard Mattes ARS 2020-21 W.O. Atwater Memorial Lecturer Richard D. Mattes. Back to Contents


Return to top


Research
                            Media
                            About ARS
                            Work With Us


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov