Advanced Detection Systems new ProScan Max metal detection technology monitors and compensates for production conditions that effect sensitivity performance. Working in real time, the computer compensates for the effects of conveyor and floor vibrations caused by forklift traffic, product impact, along with the shaking effects caused by reject mechanisms and other processing equipment. A common complaint with metal detectors is the high number of false rejects or false positives that food processors experience during production. Food metal detectors are often placed in extreme production conditions that subject them to vibrations, shaking and harsh conditions that directly affect the performance of the metal detector. With the ProScan Max technology, these conditions are compensated for automatically, which improves the metal detector’s sensitivity to smaller metal contaminates. The patented metal detector incorporates proprietary technology in its electronics. The detector has an easy to use touch screen, 1-2 pass product set up, auto calibration, USB data down load, Ethernet and optional remote diagnostics capability. More information is available at Advanced Detection System.
A Purdue University research team developed a nanoparticle that can hold and release an antimicrobial agent as needed for extending the shelf life of foods susceptible to Listeria monocytogenes.
Yuan Yao, an assistant professor of food science, altered the surface of a carbohydrate found in sweet corn called phytoglycogen, which led to the creation of several forms of a nanoparticle that could attract and stabilize nisin, a food-based antimicrobial peptide. The nanoparticle can then preserve nisin for up to three weeks, combating Listeria, a potentially lethal foodborne pathogen found in meats, dairy and vegetables that is especially troublesome for pregnant women, infants, older people and others with weakened immune systems.
Controlling Listeria at deli counters, for example, is especially problematic because meat is continually being opened, cut and stored, giving Listeria many chances to contaminate the food. Nisin alone is only effective at inhibiting Listeria for a short period - possibly only a few days - in many foods.
"People have been using nisin for a number of years, but the problem has been that it is depleted quickly in a food system," said Arun Bhunia, a Purdue professor of food science who co-authored a paper with Yao on the findings in the early online version of the Journal of Controlled Release. "This nanoparticle is an improved way to deliver the antimicrobial properties of nisin for extended use."
Yao used two strategies to attract nisin to the phytoglycogen nanopoarticles. First, he was able to negatively charge the surface of the nanoparticle and use electrostatic activity to attract the positively charged nisin molecules. Second, he created a partially hydrophobic condition on the surface of the nanoparticle, causing it to interact with partially hydrophobic nisin molecules. When the particles are hydrophobic, or repel water, they become attracted to each other.
"Both strategies may work together to allow nanoparticles to attract and stabilize nisin," Yao said, "This could substantially reduce the depletion of nisin in various systems."
For practical use, Yao said a solution containing the nanoparticles and free nisin could be sprayed onto foods or included in packaging. The solution requires a balance of free nisin and nisin on the nanoparticles.
"When you reduce the amount of free nisin, it will trigger a release of more nisin from the nanoparticles to re-establish the equilibrium," Yao said. "There will be a substantial amount of nisin preserved to counteract the Listeria."
Using a model, Yao said a sufficient amount of nisin to combat Listeria could be preserved for up to 21 days.
Yao and his colleagues are working on using other food-based antimicrobial peptides and nano-constructs to combat Listeria other foodborne pathogens such as E. coli O157:H7 and salmonella. The U.S. Department of Agriculture and the National Science Foundation funded their research.
The RapidChek SELECT Salmonella enteritidis (SE) test system from SDIX has earned Performance-Tested Methods (PTM) certification from the AOAC Research Institute. The AOAC PTM certification validates RapidChek SELECT SE as equivalent to the FDA methodology for detecting SE in poultry house environments and pooled eggs. The SDIX test performs significantly faster than the FDA’s Bacteriological Analytical Manual (BAM) method, yielding results for environmental samples and eggs in only two days. The certification also demonstrated RapidChek SELECT’s equivalency to the USDA-FSIS’ method for testing poultry meat products as performed on chicken carcass rinses.
More information is available at SDIX.
In-Quiz-It Software announces the availability of version 5.0 of the U-Trap-It Pest Management System. This new release represents the most comprehensive update to the System since its beginning in 1993. All areas of the existing System have been enhanced and many new capabilities have been added. For the food processing industry the System incorporates a complete management system to proactively address pest issues using the greenest of Green Pest Management approaches. It also provides complete documentation for compliance with audits and for Quality Assurance needs. It was the first comprehensive system to proactively manage municipal rodent control and it is equally adept at managing any professional health care or bed bug program.
More information is available at In-Quiz-It.
Mettler Toledo has introduced the FiveGo pH Food Kit–a portable pH measuring instrument designed for use in the food and beverage industry. FiveGo instruments feature storage capacity for up to 30 measurements, including automatic endpoint recognition and calibration with automatic buffer recognition. Operation is easy and intuitive with dedicated buttons for starting and ending a measurement and for saving and accessing measurements and the latest calibration data. With the new LE427 Puncture Electrode, the food kit enables quick and safe measurements of solid samples, such as cheese and meat. The FiveGo pH – FG2 Food Kit includes compact pH meter FiveGo, robust LE427 pH puncture electrode, and buffer sachets for first calibrations. The new LE427 Puncture pH Electrode has a spear-shaped tip makes it easy to penetrate smaller samples, such as food or soil, easy-use, low-maintenance gel electrolyte, and a protective hard plastic cover.