Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


New Bacteria Test Could Improve Quality of Fruit and Vegetable Juice

Developed by a Mizzou food scientist, the technique utilizes DNA sequencing and infrared spectroscopy

Increasingly, consumer products, especially food and beverage products, are being scrutinized for better quality. At the University of Missouri-Columbia, a food science expert has developed a rapid, reliable and efficient technique to ensure fruit and vegetable juice products adhere to federal and international quality standards.

Collaborating with scientists in the United States and from around the world, Mengshi Lin, assistant professor of food science in the College of Agriculture, Food and Natural Resources, has successfully used a new approach combining DNA sequencing technique with mid-infrared spectroscopy to rapidly and accurately identify Alicyclobacillus, a common bacterium found in apple, carrot, tomato, orange and pear juices, tropical fruit juices and juice blends. The bacterium won't cause human sickness, but it affects flavor and results in spoilage.

Currently, a number of different testing methods are utilized, some of which yield false negative results. This has complicated international trade. Japan, along with other developed countries, has a zero tolerance for this bacterium in imported juices, Lin said.

... more about:
»spectroscopy »technique

He said identification is a challenge because spoilage can be difficult to distinguish visibly until test results are confirmed or after juice products have been opened and tasted by consumers. In addition to agitating taste buds, the latter can affect consumer confidence.

Lin's technique is significant because it identifies the organism quickly - in a matter of hours, unlike traditional culturing methods, which are time consuming and require five to seven days to process. Lin said that testing time is critical for juice processing companies, which monitor for the bacteria during the processing and final product stage. He said the DNA technique in combination with infrared spectroscopy technique won't cause long delays in production.

"This combination will be the best way to quickly and accurately detect and identify the bacteria," said Lin, who worked with researchers from Washington State University and Hashemite University in Jordan, to develop the technique. "If processors find the bacteria, they can go back quickly and find the affected products."

Lin and his research team have tested the technique and published the results in a study, "Phylogenetic and spectroscopic analysis of Alicyclobacillus isolates by 16S rDNA sequencing and mid-infrared spectroscopy," which has been published in Sensing and Instrumentation for Food Quality and Safety.

Bryan Daniels | EurekAlert!
Further information:

Further reports about: spectroscopy technique

More articles from Life Sciences:

nachricht First time-lapse footage of cell activity during limb regeneration
25.10.2016 | eLife

nachricht Phenotype at the push of a button
25.10.2016 | Institut für Pflanzenbiochemie

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Etching Microstructures with Lasers

Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.

This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...

Im Focus: Light-driven atomic rotations excite magnetic waves

Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion

Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

Im Focus: Diamonds aren't forever: Sandia, Harvard team create first quantum computer bridge

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.

"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

Ice shelf vibrations cause unusual waves in Antarctic atmosphere

25.10.2016 | Earth Sciences

Fluorescent holography: Upending the world of biological imaging

25.10.2016 | Power and Electrical Engineering

Etching Microstructures with Lasers

25.10.2016 | Process Engineering

More VideoLinks >>>