NMR Monitoring of Food Safety

As an expert in the field of nuclear magnetic resonance, Creative Biostructure can achieve qualitative or quantitative detection of detected items in food samples through the analysis of hydrogen proton relaxation time using low-field nuclear magnetic resonance technology. Low-field nuclear magnetic resonance (NMR) technology is used to detect water content in foods, quickly detect microorganisms, and detect bruises or internal spoilage (fruits and vegetables).

Low Field NMR

Low-field nuclear magnetic resonance occurs when the constant field strength is less than 0.5 T. Low-field nuclear magnetic resonance (NMR) technology can perform non-destructive testing of the internal structure and various indicators of a sample due to its low field strength, but cannot distinguish the chemical shifts of different protons. Therefore, it is mainly used to measure the longitudinal relaxation time (T1), lateral relaxation time (T2), and diffusion coefficient (D) to reflect the motion properties of specific protons in the sample and obtain information about the target components in the sample.

Food Moisture Testing Services

The differences in the content, distribution, and presence of water in foods directly affect the quality, processing characteristics, and stability of foods. Using low-field nuclear magnetic resonance technology for non-destructive testing, Creative Biostructure can help customers effectively obtain all information about water distribution.

Data Interpretation

When water binds firmly to the substrate, the T2 value decreases.

When water fluidity is good, the T2 value is higher.

The relaxation time of hydrogen nuclei varies with the composition of food, storage temperature, storage time, water fluidity, and other factors. This parameter can provide important information related to the binding force and movement of water molecules and has obvious advantages in application to food moisture detection.

Testing Services for Food Microorganisms

Foodborne diseases caused by food pollution are the main reason for the emergence of food safety issues in recent years. Creative Biostructure combines magnetic nanotechnology with low-field nuclear magnetic resonance technology to achieve more accurate and convenient detection of microorganisms in food and can perform multiple non-destructive tests.

• Rapid detection of Listeria spp. The specific binding of target bacteria to antibodies on immunofunctional magnetic beads can cause changes in lateral relaxation time in NMR detection, with high sensitivity.
• Rapid detection of Salmonella. Using magnetic nanoparticles to specifically bind the immobilized antibody to Salmonella, the T2 value was measured using nuclear magnetic resonance technology.

Common foodborne pathogens that may cause food safety problems

• Norovirus
• Escherichia coli
• Listeria
• Salmonella
• Staphylococcus aureus

Fruit and Vegetable Crush or Internal Corruption Detection Service

In fruits, bruised or decayed tissues can generate strong NMR signals due to water immersion, while holes and areas where flocculent degeneration occurs have weakened or no signals, so it is possible to determine the damage and deterioration of the fruit.

We use low-field nuclear magnetic resonance technology to display high-resolution images of the internal tissues of fruits and vegetables, which can be used to detect internal bruises, whether there are seeds, tissue breakdown, heat/cold damage, insect or microbial decay, and storage softening processes in fruits and vegetables.

Creative Biostructure is committed to providing high-quality NMR analysis services to advance the life sciences fields. If you have any questions or needs, please contact us and our customer service staff will help you the first time.

Ordering Process