NMR/MRI Articles

Classification and Prediction by LF NMR

Classification and Prediction by LF NMR

 Comparative Experimental Investigation on the Actuation Mechanisms of Ionic Polymer–metal Composites with Different Backbones and Water Contents Abstract  The classification analysis and firmness prediction of sweet corn subjected to different treatments were investigated to develop the potential application of low field nuclear magnetic resonance for food quality control. Principal component analysis (PCA) was firstly used for exploiting the invisible changes of the internal characteristics of blanched sweet corn. Then, two classification methods involving regression analysis in combination with linear discriminant analysis (LDA), which is based on data compression technology (PCA and partial least squares, PLS), were compared. The PCA score plots clearly showed……

>>>>Read More
Multifunctional Imaging Probe Based on Gadofulleride Nanoplatform

Multifunctional Imaging Probe Based on Gadofulleride Nanoplatform

NiuMag Multifunctional Imaging Probe Based on Gadofulleride Nanoplatform Abstract  A FAR over-expressed tumor targeting multifunctional imaging probe has been fabricated based on gadofulleride nanoplatform. The combination of highly efficient MRI contrast enhancement and sensitive fluorescence imaging along with the preferential uptake toward FAR tumor cells suggest that the obtained multifunctional imaging probe possesses complementary capabilities for anatomical resolution and detection sensitivity.we have successfully synthesized a folic acid conjugated dual-modality molecular imaging probe for targeting FAR over-expressed tumour cells based on endohedral metallofullerene Gd@C82 nanoplatform. The as-prepared EMF–FA– FITC exhibits r1 relaxivity as high as 20.2 mM……

>>>>Read More
Food & Agriculture Low-Field NMR Applications

Food & Agriculture Low-Field NMR Applications

 Food & Agriculture Low-Field NMR Applications Water molecule is the key factor of food quality. It influences the food’s taste, storage and process. At the same time, the oil content is also important to food quality. In addition, in the process of the grains and oil’s production, the oil content of oilseeds, cream cake and feedstuff is very important. NIUMAG’s low-field NMR instruments can easily measure the water phase, water distribution, oil content and oil distribution of food and grains. Qualitative Test (Agriculture) Study on distribution and mobility of moisture for crops Study on distribution and mobility of moisture for Tobacco and wood Imaging test of rice Quality Test (Food)  Detection of waste oil Detecting adulteration of milk, honey Ed……

>>>>Read More
Benchtop NMR Application for Food

Benchtop NMR Application for Food

NiuMag Benchtop NMR Application for Food About benchtop NMR  There is a class of physically small, benchtop NMR instruments available, useful for dedicated quantitative analysis and R&D, These instruments are pulsed, time domain NMR with small size, they are also called benchtop NMR, low field NMR. Benchtop NMR Principle  Benchtop NMR uses a permanent magnetic field and radio frequency (RF) energy to look at NMR sensitive hydrogen nuclear. In response, RF signals are generated by the sensitive nuclear and the signals are detected by benchtop NMR. The amplitude and duration of these signals are related to the properties of the sample. Unlike other spectroscopic techniques, Benchtop NMR is unaffected by sample color and surface properties. And it is a nondestru……

>>>>Read More
Effect of PH on Heat-induced Gelation of Duck Blood Plasma Protein

Effect of PH on Heat-induced Gelation of Duck Blood Plasma Protein

 Effect of PH on Heat-induced Gelation of Duck Blood Plasma Protein Abstract  The effect of microbial transglutaminase (MTG) on nuclear magnetic resonance relaxation (NMR) behaviour, water holding capacity (WHC) and microstructure of pork myofibrillar protein (PMP) gel was studied. The enzymatic protein preparation had significantly lower values of spin–spin relaxation time (T2), higher WHC and more porous microstructure in comparison with the control system. T2 was reduced from 226 ms (peak value) of the PMP gel containing no MTG to 188 ms of the PMP gel containing 2 U/g protein. However, no further decrease was shown when the concentration of MTG increased. The reduction was attributed to reduced mobility of water protons in the system. Scanning electron microgra……

>>>>Read More